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From ima...@apache.org
Subject [17/51] [partial] incubator-asterixdb-hyracks git commit: Change folder structure for Java repackage
Date Tue, 25 Aug 2015 16:41:30 GMT
http://git-wip-us.apache.org/repos/asf/incubator-asterixdb-hyracks/blob/9939b48e/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/metadata/PigletFileDataSink.java
----------------------------------------------------------------------
diff --git a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/metadata/PigletFileDataSink.java b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/metadata/PigletFileDataSink.java
new file mode 100644
index 0000000..6ab624d
--- /dev/null
+++ b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/metadata/PigletFileDataSink.java
@@ -0,0 +1,54 @@
+/*
+ * Copyright 2009-2013 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.hyracks.algebricks.examples.piglet.metadata;
+
+import edu.uci.ics.hyracks.algebricks.core.algebra.metadata.IDataSink;
+import edu.uci.ics.hyracks.algebricks.core.algebra.properties.FileSplitDomain;
+import edu.uci.ics.hyracks.algebricks.core.algebra.properties.IPartitioningProperty;
+import edu.uci.ics.hyracks.algebricks.core.algebra.properties.RandomPartitioningProperty;
+import edu.uci.ics.hyracks.dataflow.std.file.FileSplit;
+
+public class PigletFileDataSink implements IDataSink {
+    private String file;
+
+    private FileSplit[] fileSplits;
+
+    private IPartitioningProperty partProp;
+
+    public PigletFileDataSink(String file) {
+        this.file = file;
+        fileSplits = FileSplitUtils.parseFileSplits(file);
+        partProp = new RandomPartitioningProperty(new FileSplitDomain(fileSplits));
+    }
+
+    @Override
+    public Object getId() {
+        return file;
+    }
+
+    public FileSplit[] getFileSplits() {
+        return fileSplits;
+    }
+
+    @Override
+    public Object[] getSchemaTypes() {
+        return null;
+    }
+
+    @Override
+    public IPartitioningProperty getPartitioningProperty() {
+        return partProp;
+    }
+}
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/incubator-asterixdb-hyracks/blob/9939b48e/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/metadata/PigletFileDataSource.java
----------------------------------------------------------------------
diff --git a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/metadata/PigletFileDataSource.java b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/metadata/PigletFileDataSource.java
new file mode 100644
index 0000000..076e15a
--- /dev/null
+++ b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/metadata/PigletFileDataSource.java
@@ -0,0 +1,76 @@
+/*
+ * Copyright 2009-2013 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.hyracks.algebricks.examples.piglet.metadata;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import edu.uci.ics.hyracks.algebricks.core.algebra.base.LogicalVariable;
+import edu.uci.ics.hyracks.algebricks.core.algebra.metadata.IDataSource;
+import edu.uci.ics.hyracks.algebricks.core.algebra.metadata.IDataSourcePropertiesProvider;
+import edu.uci.ics.hyracks.algebricks.core.algebra.properties.FileSplitDomain;
+import edu.uci.ics.hyracks.algebricks.core.algebra.properties.FunctionalDependency;
+import edu.uci.ics.hyracks.algebricks.core.algebra.properties.ILocalStructuralProperty;
+import edu.uci.ics.hyracks.algebricks.core.algebra.properties.IPhysicalPropertiesVector;
+import edu.uci.ics.hyracks.algebricks.core.algebra.properties.RandomPartitioningProperty;
+import edu.uci.ics.hyracks.algebricks.core.algebra.properties.StructuralPropertiesVector;
+import edu.uci.ics.hyracks.dataflow.std.file.FileSplit;
+
+public class PigletFileDataSource implements IDataSource<String> {
+    private final String file;
+
+    private final Object[] types;
+
+    private final FileSplit[] fileSplits;
+
+    private IDataSourcePropertiesProvider propProvider;
+
+    public PigletFileDataSource(String file, Object[] types) {
+        this.file = file;
+        this.types = types;
+        fileSplits = FileSplitUtils.parseFileSplits(file);
+        final IPhysicalPropertiesVector vec = new StructuralPropertiesVector(new RandomPartitioningProperty(
+                new FileSplitDomain(fileSplits)), new ArrayList<ILocalStructuralProperty>());
+        propProvider = new IDataSourcePropertiesProvider() {
+            @Override
+            public IPhysicalPropertiesVector computePropertiesVector(List<LogicalVariable> scanVariables) {
+                return vec;
+            }
+        };
+    }
+
+    @Override
+    public String getId() {
+        return file;
+    }
+
+    @Override
+    public Object[] getSchemaTypes() {
+        return types;
+    }
+
+    public FileSplit[] getFileSplits() {
+        return fileSplits;
+    }
+
+    @Override
+    public IDataSourcePropertiesProvider getPropertiesProvider() {
+        return propProvider;
+    }
+
+    @Override
+    public void computeFDs(List<LogicalVariable> scanVariables, List<FunctionalDependency> fdList) {
+    }
+}
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/incubator-asterixdb-hyracks/blob/9939b48e/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/metadata/PigletFunction.java
----------------------------------------------------------------------
diff --git a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/metadata/PigletFunction.java b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/metadata/PigletFunction.java
new file mode 100644
index 0000000..ba5c5aa
--- /dev/null
+++ b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/metadata/PigletFunction.java
@@ -0,0 +1,34 @@
+/*
+ * Copyright 2009-2013 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.hyracks.algebricks.examples.piglet.metadata;
+
+import edu.uci.ics.hyracks.algebricks.core.algebra.functions.AbstractFunctionInfo;
+import edu.uci.ics.hyracks.algebricks.core.algebra.functions.FunctionIdentifier;
+
+public class PigletFunction extends AbstractFunctionInfo {
+    private static final long serialVersionUID = 1L;
+
+    private final FunctionIdentifier fid;
+
+    public PigletFunction(FunctionIdentifier fid) {
+        super(true);
+        this.fid = fid;
+    }
+
+    @Override
+    public FunctionIdentifier getFunctionIdentifier() {
+        return fid;
+    }
+}
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/incubator-asterixdb-hyracks/blob/9939b48e/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/metadata/PigletMetadataProvider.java
----------------------------------------------------------------------
diff --git a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/metadata/PigletMetadataProvider.java b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/metadata/PigletMetadataProvider.java
new file mode 100644
index 0000000..099520d
--- /dev/null
+++ b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/metadata/PigletMetadataProvider.java
@@ -0,0 +1,234 @@
+/*
+ * Copyright 2009-2013 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.hyracks.algebricks.examples.piglet.metadata;
+
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import edu.uci.ics.hyracks.algebricks.common.constraints.AlgebricksAbsolutePartitionConstraint;
+import edu.uci.ics.hyracks.algebricks.common.constraints.AlgebricksPartitionConstraint;
+import edu.uci.ics.hyracks.algebricks.common.exceptions.AlgebricksException;
+import edu.uci.ics.hyracks.algebricks.common.utils.Pair;
+import edu.uci.ics.hyracks.algebricks.core.algebra.base.ILogicalExpression;
+import edu.uci.ics.hyracks.algebricks.core.algebra.base.LogicalVariable;
+import edu.uci.ics.hyracks.algebricks.core.algebra.expressions.IVariableTypeEnvironment;
+import edu.uci.ics.hyracks.algebricks.core.algebra.functions.AlgebricksBuiltinFunctions;
+import edu.uci.ics.hyracks.algebricks.core.algebra.functions.FunctionIdentifier;
+import edu.uci.ics.hyracks.algebricks.core.algebra.functions.IFunctionInfo;
+import edu.uci.ics.hyracks.algebricks.core.algebra.metadata.IDataSink;
+import edu.uci.ics.hyracks.algebricks.core.algebra.metadata.IDataSource;
+import edu.uci.ics.hyracks.algebricks.core.algebra.metadata.IDataSourceIndex;
+import edu.uci.ics.hyracks.algebricks.core.algebra.metadata.IMetadataProvider;
+import edu.uci.ics.hyracks.algebricks.core.algebra.operators.logical.IOperatorSchema;
+import edu.uci.ics.hyracks.algebricks.core.jobgen.impl.JobGenContext;
+import edu.uci.ics.hyracks.algebricks.data.IPrinterFactory;
+import edu.uci.ics.hyracks.algebricks.examples.piglet.types.Type;
+import edu.uci.ics.hyracks.algebricks.runtime.base.IPushRuntimeFactory;
+import edu.uci.ics.hyracks.algebricks.runtime.operators.std.SinkWriterRuntimeFactory;
+import edu.uci.ics.hyracks.algebricks.runtime.writers.PrinterBasedWriterFactory;
+import edu.uci.ics.hyracks.api.dataflow.IOperatorDescriptor;
+import edu.uci.ics.hyracks.api.dataflow.value.ISerializerDeserializer;
+import edu.uci.ics.hyracks.api.dataflow.value.RecordDescriptor;
+import edu.uci.ics.hyracks.api.job.JobSpecification;
+import edu.uci.ics.hyracks.dataflow.common.data.marshalling.FloatSerializerDeserializer;
+import edu.uci.ics.hyracks.dataflow.common.data.marshalling.IntegerSerializerDeserializer;
+import edu.uci.ics.hyracks.dataflow.common.data.marshalling.UTF8StringSerializerDeserializer;
+import edu.uci.ics.hyracks.dataflow.common.data.parsers.FloatParserFactory;
+import edu.uci.ics.hyracks.dataflow.common.data.parsers.IValueParserFactory;
+import edu.uci.ics.hyracks.dataflow.common.data.parsers.IntegerParserFactory;
+import edu.uci.ics.hyracks.dataflow.common.data.parsers.UTF8StringParserFactory;
+import edu.uci.ics.hyracks.dataflow.std.file.ConstantFileSplitProvider;
+import edu.uci.ics.hyracks.dataflow.std.file.DelimitedDataTupleParserFactory;
+import edu.uci.ics.hyracks.dataflow.std.file.FileScanOperatorDescriptor;
+import edu.uci.ics.hyracks.dataflow.std.file.FileSplit;
+import edu.uci.ics.hyracks.dataflow.std.file.IFileSplitProvider;
+import edu.uci.ics.hyracks.dataflow.std.file.ITupleParserFactory;
+
+public class PigletMetadataProvider implements IMetadataProvider<String, String> {
+    private static final Map<FunctionIdentifier, PigletFunction> FN_MAP;
+
+    static {
+        Map<FunctionIdentifier, PigletFunction> map = new HashMap<FunctionIdentifier, PigletFunction>();
+
+        map.put(AlgebricksBuiltinFunctions.EQ, new PigletFunction(AlgebricksBuiltinFunctions.EQ));
+
+        FN_MAP = Collections.unmodifiableMap(map);
+    }
+
+    @Override
+    public IDataSource<String> findDataSource(String id) throws AlgebricksException {
+        return null;
+    }
+
+    @SuppressWarnings("unchecked")
+    @Override
+    public Pair<IOperatorDescriptor, AlgebricksPartitionConstraint> getScannerRuntime(IDataSource<String> dataSource,
+            List<LogicalVariable> scanVariables, List<LogicalVariable> projectVariables, boolean projectPushed,
+            List<LogicalVariable> minFilterVars, List<LogicalVariable> maxFilterVars, IOperatorSchema opSchema,
+            IVariableTypeEnvironment typeEnv, JobGenContext context, JobSpecification jobSpec, Object implConfig)
+            throws AlgebricksException {
+        PigletFileDataSource ds = (PigletFileDataSource) dataSource;
+
+        FileSplit[] fileSplits = ds.getFileSplits();
+        String[] locations = new String[fileSplits.length];
+        for (int i = 0; i < fileSplits.length; ++i) {
+            locations[i] = fileSplits[i].getNodeName();
+        }
+        IFileSplitProvider fsp = new ConstantFileSplitProvider(fileSplits);
+
+        Object[] colTypes = ds.getSchemaTypes();
+        IValueParserFactory[] vpfs = new IValueParserFactory[colTypes.length];
+        ISerializerDeserializer[] serDesers = new ISerializerDeserializer[colTypes.length];
+
+        for (int i = 0; i < colTypes.length; ++i) {
+            Type colType = (Type) colTypes[i];
+            IValueParserFactory vpf;
+            ISerializerDeserializer serDeser;
+            switch (colType.getTag()) {
+                case INTEGER:
+                    vpf = IntegerParserFactory.INSTANCE;
+                    serDeser = IntegerSerializerDeserializer.INSTANCE;
+                    break;
+
+                case CHAR_ARRAY:
+                    vpf = UTF8StringParserFactory.INSTANCE;
+                    serDeser = UTF8StringSerializerDeserializer.INSTANCE;
+                    break;
+
+                case FLOAT:
+                    vpf = FloatParserFactory.INSTANCE;
+                    serDeser = FloatSerializerDeserializer.INSTANCE;
+                    break;
+
+                default:
+                    throw new UnsupportedOperationException();
+            }
+            vpfs[i] = vpf;
+            serDesers[i] = serDeser;
+        }
+
+        ITupleParserFactory tpf = new DelimitedDataTupleParserFactory(vpfs, ',');
+        RecordDescriptor rDesc = new RecordDescriptor(serDesers);
+
+        IOperatorDescriptor scanner = new FileScanOperatorDescriptor(jobSpec, fsp, tpf, rDesc);
+        AlgebricksAbsolutePartitionConstraint constraint = new AlgebricksAbsolutePartitionConstraint(locations);
+        return new Pair<IOperatorDescriptor, AlgebricksPartitionConstraint>(scanner, constraint);
+    }
+
+    @Override
+    public boolean scannerOperatorIsLeaf(IDataSource<String> dataSource) {
+        return true;
+    }
+
+    @Override
+    public Pair<IPushRuntimeFactory, AlgebricksPartitionConstraint> getWriteFileRuntime(IDataSink sink,
+            int[] printColumns, IPrinterFactory[] printerFactories, RecordDescriptor inputDesc)
+            throws AlgebricksException {
+        PigletFileDataSink ds = (PigletFileDataSink) sink;
+        FileSplit[] fileSplits = ds.getFileSplits();
+        String[] locations = new String[fileSplits.length];
+        for (int i = 0; i < fileSplits.length; ++i) {
+            locations[i] = fileSplits[i].getNodeName();
+        }
+        IPushRuntimeFactory prf = new SinkWriterRuntimeFactory(printColumns, printerFactories, fileSplits[0]
+                .getLocalFile().getFile(), PrinterBasedWriterFactory.INSTANCE, inputDesc);
+        AlgebricksAbsolutePartitionConstraint constraint = new AlgebricksAbsolutePartitionConstraint(locations);
+        return new Pair<IPushRuntimeFactory, AlgebricksPartitionConstraint>(prf, constraint);
+    }
+
+    @Override
+    public IDataSourceIndex<String, String> findDataSourceIndex(String indexId, String dataSourceId)
+            throws AlgebricksException {
+        return null;
+    }
+
+    @Override
+    public Pair<IOperatorDescriptor, AlgebricksPartitionConstraint> getResultHandleRuntime(IDataSink sink,
+            int[] printColumns, IPrinterFactory[] printerFactories, RecordDescriptor inputDesc, boolean ordered,
+            JobSpecification spec) throws AlgebricksException {
+        return null;
+    }
+
+    @Override
+    public Pair<IOperatorDescriptor, AlgebricksPartitionConstraint> getWriteResultRuntime(
+            IDataSource<String> dataSource, IOperatorSchema propagatedSchema, List<LogicalVariable> keys,
+            LogicalVariable payLoadVar, List<LogicalVariable> additionalNonKeyFields, JobGenContext context,
+            JobSpecification jobSpec) throws AlgebricksException {
+        // TODO Auto-generated method stub
+        return null;
+    }
+
+    @Override
+    public Pair<IOperatorDescriptor, AlgebricksPartitionConstraint> getIndexInsertRuntime(
+            IDataSourceIndex<String, String> dataSource,
+            IOperatorSchema propagatedSchema, IOperatorSchema[] inputSchemas,
+            IVariableTypeEnvironment typeEnv,
+            List<LogicalVariable> primaryKeys,
+            List<LogicalVariable> secondaryKeys,
+            List<LogicalVariable> additionalNonKeyFields,
+            ILogicalExpression filterExpr,
+            RecordDescriptor recordDesc, JobGenContext context,
+            JobSpecification spec, boolean bulkload) throws AlgebricksException {
+        // TODO Auto-generated method stub
+        return null;
+    }
+
+    @Override
+    public Pair<IOperatorDescriptor, AlgebricksPartitionConstraint> getIndexDeleteRuntime(
+            IDataSourceIndex<String, String> dataSource, IOperatorSchema propagatedSchema,
+            IOperatorSchema[] inputSchemas, IVariableTypeEnvironment typeEnv, List<LogicalVariable> primaryKeys,
+            List<LogicalVariable> secondaryKeys, List<LogicalVariable> additionalNonKeyFields,
+            ILogicalExpression filterExpr, RecordDescriptor recordDesc, JobGenContext context, JobSpecification spec)
+            throws AlgebricksException {
+        // TODO Auto-generated method stub
+        return null;
+    }
+
+    @Override
+    public Pair<IOperatorDescriptor, AlgebricksPartitionConstraint> getTokenizerRuntime(
+            IDataSourceIndex<String, String> dataSource, IOperatorSchema propagatedSchema, IOperatorSchema[] inputSchemas,
+            IVariableTypeEnvironment typeEnv, List<LogicalVariable> primaryKeys, List<LogicalVariable> secondaryKeys,
+            ILogicalExpression filterExpr, RecordDescriptor recordDesc,
+            JobGenContext context, JobSpecification spec, boolean bulkload) throws AlgebricksException {
+        // TODO Auto-generated method stub
+        return null;
+    }
+
+    @Override
+    public IFunctionInfo lookupFunction(FunctionIdentifier fid) {
+        return FN_MAP.get(fid);
+    }
+
+    @Override
+    public Pair<IOperatorDescriptor, AlgebricksPartitionConstraint> getInsertRuntime(IDataSource<String> dataSource,
+            IOperatorSchema propagatedSchema, IVariableTypeEnvironment typeEnv, List<LogicalVariable> keys,
+            LogicalVariable payLoadVar, List<LogicalVariable> additionalNonKeyFields, RecordDescriptor recordDesc,
+            JobGenContext context, JobSpecification jobSpec, boolean bulkload) throws AlgebricksException {
+        // TODO Auto-generated method stub
+        return null;
+    }
+
+    @Override
+    public Pair<IOperatorDescriptor, AlgebricksPartitionConstraint> getDeleteRuntime(IDataSource<String> dataSource,
+            IOperatorSchema propagatedSchema, IVariableTypeEnvironment typeEnv, List<LogicalVariable> keys,
+            LogicalVariable payLoadVar, List<LogicalVariable> additionalNonKeyFields, RecordDescriptor recordDesc,
+            JobGenContext context, JobSpecification jobSpec) throws AlgebricksException {
+        // TODO Auto-generated method stub
+        return null;
+    }
+
+}

http://git-wip-us.apache.org/repos/asf/incubator-asterixdb-hyracks/blob/9939b48e/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/rewriter/PigletRewriteRuleset.java
----------------------------------------------------------------------
diff --git a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/rewriter/PigletRewriteRuleset.java b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/rewriter/PigletRewriteRuleset.java
new file mode 100644
index 0000000..1c2cfae
--- /dev/null
+++ b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/rewriter/PigletRewriteRuleset.java
@@ -0,0 +1,131 @@
+/*
+ * Copyright 2009-2013 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.hyracks.algebricks.examples.piglet.rewriter;
+
+import java.util.LinkedList;
+import java.util.List;
+
+import edu.uci.ics.hyracks.algebricks.core.rewriter.base.HeuristicOptimizer;
+import edu.uci.ics.hyracks.algebricks.core.rewriter.base.IAlgebraicRewriteRule;
+import edu.uci.ics.hyracks.algebricks.rewriter.rules.BreakSelectIntoConjunctsRule;
+import edu.uci.ics.hyracks.algebricks.rewriter.rules.ComplexJoinInferenceRule;
+import edu.uci.ics.hyracks.algebricks.rewriter.rules.ConsolidateAssignsRule;
+import edu.uci.ics.hyracks.algebricks.rewriter.rules.ConsolidateSelectsRule;
+import edu.uci.ics.hyracks.algebricks.rewriter.rules.EliminateSubplanRule;
+import edu.uci.ics.hyracks.algebricks.rewriter.rules.EnforceStructuralPropertiesRule;
+import edu.uci.ics.hyracks.algebricks.rewriter.rules.ExtractCommonOperatorsRule;
+import edu.uci.ics.hyracks.algebricks.rewriter.rules.ExtractGbyExpressionsRule;
+import edu.uci.ics.hyracks.algebricks.rewriter.rules.FactorRedundantGroupAndDecorVarsRule;
+import edu.uci.ics.hyracks.algebricks.rewriter.rules.InferTypesRule;
+import edu.uci.ics.hyracks.algebricks.rewriter.rules.InlineVariablesRule;
+import edu.uci.ics.hyracks.algebricks.rewriter.rules.IsolateHyracksOperatorsRule;
+import edu.uci.ics.hyracks.algebricks.rewriter.rules.PullSelectOutOfEqJoin;
+import edu.uci.ics.hyracks.algebricks.rewriter.rules.CopyLimitDownRule;
+import edu.uci.ics.hyracks.algebricks.rewriter.rules.PushProjectDownRule;
+import edu.uci.ics.hyracks.algebricks.rewriter.rules.PushProjectIntoDataSourceScanRule;
+import edu.uci.ics.hyracks.algebricks.rewriter.rules.PushSelectDownRule;
+import edu.uci.ics.hyracks.algebricks.rewriter.rules.PushSelectIntoJoinRule;
+import edu.uci.ics.hyracks.algebricks.rewriter.rules.ReinferAllTypesRule;
+import edu.uci.ics.hyracks.algebricks.rewriter.rules.RemoveUnusedAssignAndAggregateRule;
+import edu.uci.ics.hyracks.algebricks.rewriter.rules.SetAlgebricksPhysicalOperatorsRule;
+import edu.uci.ics.hyracks.algebricks.rewriter.rules.SetExecutionModeRule;
+
+public class PigletRewriteRuleset {
+
+    public final static List<IAlgebraicRewriteRule> buildTypeInferenceRuleCollection() {
+        List<IAlgebraicRewriteRule> typeInfer = new LinkedList<IAlgebraicRewriteRule>();
+        typeInfer.add(new InferTypesRule());
+        return typeInfer;
+    }
+
+    public final static List<IAlgebraicRewriteRule> buildNormalizationRuleCollection() {
+        List<IAlgebraicRewriteRule> normalization = new LinkedList<IAlgebraicRewriteRule>();
+        normalization.add(new EliminateSubplanRule());
+        // TODO: This rule is incorrect and has been removed. Its replacement in
+        // Asterix (PushAggFuncIntoStandaloneAggregateRule)
+        // is language-specific.
+        // normalization.add(new IntroduceGroupByForStandaloneAggregRule());
+        normalization.add(new BreakSelectIntoConjunctsRule());
+        normalization.add(new PushSelectIntoJoinRule());
+        normalization.add(new ExtractGbyExpressionsRule());
+        return normalization;
+    }
+
+    public final static List<IAlgebraicRewriteRule> buildCondPushDownRuleCollection() {
+        List<IAlgebraicRewriteRule> condPushDown = new LinkedList<IAlgebraicRewriteRule>();
+        condPushDown.add(new PushSelectDownRule());
+        condPushDown.add(new InlineVariablesRule());
+        condPushDown.add(new FactorRedundantGroupAndDecorVarsRule());
+        condPushDown.add(new EliminateSubplanRule());
+        return condPushDown;
+    }
+
+    public final static List<IAlgebraicRewriteRule> buildJoinInferenceRuleCollection() {
+        List<IAlgebraicRewriteRule> joinInference = new LinkedList<IAlgebraicRewriteRule>();
+        joinInference.add(new InlineVariablesRule());
+        joinInference.add(new ComplexJoinInferenceRule());
+        return joinInference;
+    }
+
+    public final static List<IAlgebraicRewriteRule> buildOpPushDownRuleCollection() {
+        List<IAlgebraicRewriteRule> opPushDown = new LinkedList<IAlgebraicRewriteRule>();
+        opPushDown.add(new PushProjectDownRule());
+        opPushDown.add(new PushSelectDownRule());
+        return opPushDown;
+    }
+
+    public final static List<IAlgebraicRewriteRule> buildDataExchangeRuleCollection() {
+        List<IAlgebraicRewriteRule> dataExchange = new LinkedList<IAlgebraicRewriteRule>();
+        dataExchange.add(new SetExecutionModeRule());
+        return dataExchange;
+    }
+
+    public final static List<IAlgebraicRewriteRule> buildConsolidationRuleCollection() {
+        List<IAlgebraicRewriteRule> consolidation = new LinkedList<IAlgebraicRewriteRule>();
+        consolidation.add(new ConsolidateSelectsRule());
+        consolidation.add(new ConsolidateAssignsRule());
+        consolidation.add(new RemoveUnusedAssignAndAggregateRule());
+        return consolidation;
+    }
+
+    public final static List<IAlgebraicRewriteRule> buildPhysicalRewritesAllLevelsRuleCollection() {
+        List<IAlgebraicRewriteRule> physicalPlanRewrites = new LinkedList<IAlgebraicRewriteRule>();
+        physicalPlanRewrites.add(new PullSelectOutOfEqJoin());
+        physicalPlanRewrites.add(new SetAlgebricksPhysicalOperatorsRule());
+        physicalPlanRewrites.add(new EnforceStructuralPropertiesRule());
+        physicalPlanRewrites.add(new PushProjectDownRule());
+        physicalPlanRewrites.add(new CopyLimitDownRule());
+        return physicalPlanRewrites;
+    }
+
+    public final static List<IAlgebraicRewriteRule> buildPhysicalRewritesTopLevelRuleCollection() {
+        List<IAlgebraicRewriteRule> physicalPlanRewrites = new LinkedList<IAlgebraicRewriteRule>();
+        physicalPlanRewrites.add(new CopyLimitDownRule());
+        return physicalPlanRewrites;
+    }
+
+    public final static List<IAlgebraicRewriteRule> prepareForJobGenRuleCollection() {
+        List<IAlgebraicRewriteRule> prepareForJobGenRewrites = new LinkedList<IAlgebraicRewriteRule>();
+        prepareForJobGenRewrites.add(new IsolateHyracksOperatorsRule(
+                HeuristicOptimizer.hyraxOperatorsBelowWhichJobGenIsDisabled));
+        prepareForJobGenRewrites.add(new ExtractCommonOperatorsRule());
+        // Re-infer all types, so that, e.g., the effect of not-is-null is
+        // propagated.
+        prepareForJobGenRewrites.add(new PushProjectIntoDataSourceScanRule());
+        prepareForJobGenRewrites.add(new ReinferAllTypesRule());
+        return prepareForJobGenRewrites;
+    }
+
+}
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/incubator-asterixdb-hyracks/blob/9939b48e/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/runtime/PigletExpressionJobGen.java
----------------------------------------------------------------------
diff --git a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/runtime/PigletExpressionJobGen.java b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/runtime/PigletExpressionJobGen.java
new file mode 100644
index 0000000..9ae68bb
--- /dev/null
+++ b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/runtime/PigletExpressionJobGen.java
@@ -0,0 +1,140 @@
+/*
+ * Copyright 2009-2013 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.hyracks.algebricks.examples.piglet.runtime;
+
+import java.io.DataOutput;
+import java.util.Arrays;
+import java.util.List;
+
+import org.apache.commons.lang3.mutable.Mutable;
+
+import edu.uci.ics.hyracks.algebricks.common.exceptions.AlgebricksException;
+import edu.uci.ics.hyracks.algebricks.core.algebra.base.ILogicalExpression;
+import edu.uci.ics.hyracks.algebricks.core.algebra.base.LogicalVariable;
+import edu.uci.ics.hyracks.algebricks.core.algebra.expressions.AggregateFunctionCallExpression;
+import edu.uci.ics.hyracks.algebricks.core.algebra.expressions.ConstantExpression;
+import edu.uci.ics.hyracks.algebricks.core.algebra.expressions.ILogicalExpressionJobGen;
+import edu.uci.ics.hyracks.algebricks.core.algebra.expressions.IVariableTypeEnvironment;
+import edu.uci.ics.hyracks.algebricks.core.algebra.expressions.ScalarFunctionCallExpression;
+import edu.uci.ics.hyracks.algebricks.core.algebra.expressions.StatefulFunctionCallExpression;
+import edu.uci.ics.hyracks.algebricks.core.algebra.expressions.UnnestingFunctionCallExpression;
+import edu.uci.ics.hyracks.algebricks.core.algebra.expressions.VariableReferenceExpression;
+import edu.uci.ics.hyracks.algebricks.core.algebra.operators.logical.IOperatorSchema;
+import edu.uci.ics.hyracks.algebricks.core.jobgen.impl.JobGenContext;
+import edu.uci.ics.hyracks.algebricks.examples.piglet.compiler.ConstantValue;
+import edu.uci.ics.hyracks.algebricks.examples.piglet.exceptions.PigletException;
+import edu.uci.ics.hyracks.algebricks.examples.piglet.runtime.functions.PigletFunctionRegistry;
+import edu.uci.ics.hyracks.algebricks.examples.piglet.types.Type;
+import edu.uci.ics.hyracks.algebricks.runtime.base.ICopyAggregateFunctionFactory;
+import edu.uci.ics.hyracks.algebricks.runtime.base.ICopyEvaluatorFactory;
+import edu.uci.ics.hyracks.algebricks.runtime.base.ICopyRunningAggregateFunctionFactory;
+import edu.uci.ics.hyracks.algebricks.runtime.base.ICopySerializableAggregateFunctionFactory;
+import edu.uci.ics.hyracks.algebricks.runtime.base.ICopyUnnestingFunctionFactory;
+import edu.uci.ics.hyracks.algebricks.runtime.evaluators.ColumnAccessEvalFactory;
+import edu.uci.ics.hyracks.algebricks.runtime.evaluators.ConstantEvalFactory;
+import edu.uci.ics.hyracks.data.std.util.ArrayBackedValueStorage;
+import edu.uci.ics.hyracks.dataflow.common.data.marshalling.IntegerSerializerDeserializer;
+import edu.uci.ics.hyracks.dataflow.common.data.marshalling.UTF8StringSerializerDeserializer;
+
+public class PigletExpressionJobGen implements ILogicalExpressionJobGen {
+    @Override
+    public ICopyEvaluatorFactory createEvaluatorFactory(ILogicalExpression expr, IVariableTypeEnvironment env,
+            IOperatorSchema[] inputSchemas, JobGenContext context) throws AlgebricksException {
+        switch (expr.getExpressionTag()) {
+            case CONSTANT: {
+                ConstantValue cv = (ConstantValue) ((ConstantExpression) expr).getValue();
+                Type type = cv.getType();
+                String image = cv.getImage();
+                ArrayBackedValueStorage abvs = new ArrayBackedValueStorage();
+                DataOutput dos = abvs.getDataOutput();
+                switch (type.getTag()) {
+                    case INTEGER:
+                        try {
+                            IntegerSerializerDeserializer.INSTANCE.serialize(Integer.valueOf(image), dos);
+                        } catch (Exception e) {
+                            throw new AlgebricksException(e);
+                        }
+                        break;
+
+                    case CHAR_ARRAY:
+                        try {
+                            UTF8StringSerializerDeserializer.INSTANCE.serialize(image, dos);
+                        } catch (Exception e) {
+                            throw new AlgebricksException(e);
+                        }
+                        break;
+
+                    default:
+                        throw new UnsupportedOperationException("Unsupported constant type: " + type.getTag());
+                }
+                return new ConstantEvalFactory(Arrays.copyOf(abvs.getByteArray(), abvs.getLength()));
+            }
+
+            case FUNCTION_CALL: {
+                ScalarFunctionCallExpression sfce = (ScalarFunctionCallExpression) expr;
+
+                List<Mutable<ILogicalExpression>> argExprs = sfce.getArguments();
+                ICopyEvaluatorFactory argEvalFactories[] = new ICopyEvaluatorFactory[argExprs.size()];
+                for (int i = 0; i < argEvalFactories.length; ++i) {
+                    Mutable<ILogicalExpression> er = argExprs.get(i);
+                    argEvalFactories[i] = createEvaluatorFactory(er.getValue(), env, inputSchemas, context);
+                }
+                ICopyEvaluatorFactory funcEvalFactory;
+                try {
+                    funcEvalFactory = PigletFunctionRegistry.createFunctionEvaluatorFactory(
+                            sfce.getFunctionIdentifier(), argEvalFactories);
+                } catch (PigletException e) {
+                    throw new AlgebricksException(e);
+                }
+                return funcEvalFactory;
+            }
+
+            case VARIABLE: {
+                LogicalVariable var = ((VariableReferenceExpression) expr).getVariableReference();
+                int index = inputSchemas[0].findVariable(var);
+                return new ColumnAccessEvalFactory(index);
+            }
+        }
+        throw new IllegalArgumentException("Unknown expression type: " + expr.getExpressionTag());
+    }
+
+    @Override
+    public ICopyAggregateFunctionFactory createAggregateFunctionFactory(AggregateFunctionCallExpression expr,
+            IVariableTypeEnvironment env, IOperatorSchema[] inputSchemas, JobGenContext context)
+            throws AlgebricksException {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public ICopySerializableAggregateFunctionFactory createSerializableAggregateFunctionFactory(
+            AggregateFunctionCallExpression expr, IVariableTypeEnvironment env, IOperatorSchema[] inputSchemas,
+            JobGenContext context) throws AlgebricksException {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public ICopyRunningAggregateFunctionFactory createRunningAggregateFunctionFactory(StatefulFunctionCallExpression expr,
+            IVariableTypeEnvironment env, IOperatorSchema[] inputSchemas, JobGenContext context)
+            throws AlgebricksException {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public ICopyUnnestingFunctionFactory createUnnestingFunctionFactory(UnnestingFunctionCallExpression expr,
+            IVariableTypeEnvironment env, IOperatorSchema[] inputSchemas, JobGenContext context)
+            throws AlgebricksException {
+        throw new UnsupportedOperationException();
+    }
+}
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/incubator-asterixdb-hyracks/blob/9939b48e/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/runtime/functions/IPigletFunctionEvaluatorFactoryBuilder.java
----------------------------------------------------------------------
diff --git a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/runtime/functions/IPigletFunctionEvaluatorFactoryBuilder.java b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/runtime/functions/IPigletFunctionEvaluatorFactoryBuilder.java
new file mode 100644
index 0000000..c52a4bd
--- /dev/null
+++ b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/runtime/functions/IPigletFunctionEvaluatorFactoryBuilder.java
@@ -0,0 +1,22 @@
+/*
+ * Copyright 2009-2013 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.hyracks.algebricks.examples.piglet.runtime.functions;
+
+import edu.uci.ics.hyracks.algebricks.core.algebra.functions.FunctionIdentifier;
+import edu.uci.ics.hyracks.algebricks.runtime.base.ICopyEvaluatorFactory;
+
+public interface IPigletFunctionEvaluatorFactoryBuilder {
+    public ICopyEvaluatorFactory buildEvaluatorFactory(FunctionIdentifier fid, ICopyEvaluatorFactory[] arguments);
+}
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/incubator-asterixdb-hyracks/blob/9939b48e/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/runtime/functions/IntegerEqFunctionEvaluatorFactory.java
----------------------------------------------------------------------
diff --git a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/runtime/functions/IntegerEqFunctionEvaluatorFactory.java b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/runtime/functions/IntegerEqFunctionEvaluatorFactory.java
new file mode 100644
index 0000000..e84964d
--- /dev/null
+++ b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/runtime/functions/IntegerEqFunctionEvaluatorFactory.java
@@ -0,0 +1,67 @@
+/*
+ * Copyright 2009-2013 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.hyracks.algebricks.examples.piglet.runtime.functions;
+
+import java.io.DataOutput;
+import java.io.IOException;
+
+import edu.uci.ics.hyracks.algebricks.common.exceptions.AlgebricksException;
+import edu.uci.ics.hyracks.algebricks.runtime.base.ICopyEvaluator;
+import edu.uci.ics.hyracks.algebricks.runtime.base.ICopyEvaluatorFactory;
+import edu.uci.ics.hyracks.data.std.api.IDataOutputProvider;
+import edu.uci.ics.hyracks.data.std.primitive.IntegerPointable;
+import edu.uci.ics.hyracks.data.std.util.ArrayBackedValueStorage;
+import edu.uci.ics.hyracks.dataflow.common.data.accessors.IFrameTupleReference;
+import edu.uci.ics.hyracks.dataflow.common.data.marshalling.IntegerSerializerDeserializer;
+
+public class IntegerEqFunctionEvaluatorFactory implements ICopyEvaluatorFactory {
+    private static final long serialVersionUID = 1L;
+
+    private final ICopyEvaluatorFactory arg1Factory;
+
+    private final ICopyEvaluatorFactory arg2Factory;
+
+    public IntegerEqFunctionEvaluatorFactory(ICopyEvaluatorFactory arg1Factory, ICopyEvaluatorFactory arg2Factory) {
+        this.arg1Factory = arg1Factory;
+        this.arg2Factory = arg2Factory;
+    }
+
+    @Override
+    public ICopyEvaluator createEvaluator(final IDataOutputProvider output) throws AlgebricksException {
+        return new ICopyEvaluator() {
+            private DataOutput dataout = output.getDataOutput();
+            private ArrayBackedValueStorage out1 = new ArrayBackedValueStorage();
+            private ArrayBackedValueStorage out2 = new ArrayBackedValueStorage();
+            private ICopyEvaluator eval1 = arg1Factory.createEvaluator(out1);
+            private ICopyEvaluator eval2 = arg2Factory.createEvaluator(out2);
+
+            @Override
+            public void evaluate(IFrameTupleReference tuple) throws AlgebricksException {
+                out1.reset();
+                eval1.evaluate(tuple);
+                out2.reset();
+                eval2.evaluate(tuple);
+                int v1 = IntegerPointable.getInteger(out1.getByteArray(), 0);
+                int v2 = IntegerPointable.getInteger(out2.getByteArray(), 0);
+                boolean r = v1 == v2;
+                try {
+                    dataout.writeBoolean(r);
+                } catch (IOException ioe) {
+                    throw new AlgebricksException(ioe);
+                }
+            }
+        };
+    }
+}
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/incubator-asterixdb-hyracks/blob/9939b48e/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/runtime/functions/PigletFunctionRegistry.java
----------------------------------------------------------------------
diff --git a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/runtime/functions/PigletFunctionRegistry.java b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/runtime/functions/PigletFunctionRegistry.java
new file mode 100644
index 0000000..35015a5
--- /dev/null
+++ b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/runtime/functions/PigletFunctionRegistry.java
@@ -0,0 +1,50 @@
+/*
+ * Copyright 2009-2013 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.hyracks.algebricks.examples.piglet.runtime.functions;
+
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.Map;
+
+import edu.uci.ics.hyracks.algebricks.core.algebra.functions.AlgebricksBuiltinFunctions;
+import edu.uci.ics.hyracks.algebricks.core.algebra.functions.FunctionIdentifier;
+import edu.uci.ics.hyracks.algebricks.examples.piglet.exceptions.PigletException;
+import edu.uci.ics.hyracks.algebricks.runtime.base.ICopyEvaluatorFactory;
+
+public class PigletFunctionRegistry {
+    private static final Map<FunctionIdentifier, IPigletFunctionEvaluatorFactoryBuilder> builderMap;
+
+    static {
+        Map<FunctionIdentifier, IPigletFunctionEvaluatorFactoryBuilder> temp = new HashMap<FunctionIdentifier, IPigletFunctionEvaluatorFactoryBuilder>();
+
+        temp.put(AlgebricksBuiltinFunctions.EQ, new IPigletFunctionEvaluatorFactoryBuilder() {
+            @Override
+            public ICopyEvaluatorFactory buildEvaluatorFactory(FunctionIdentifier fid, ICopyEvaluatorFactory[] arguments) {
+                return new IntegerEqFunctionEvaluatorFactory(arguments[0], arguments[1]);
+            }
+        });
+
+        builderMap = Collections.unmodifiableMap(temp);
+    }
+
+    public static ICopyEvaluatorFactory createFunctionEvaluatorFactory(FunctionIdentifier fid, ICopyEvaluatorFactory[] args)
+            throws PigletException {
+        IPigletFunctionEvaluatorFactoryBuilder builder = builderMap.get(fid);
+        if (builder == null) {
+            throw new PigletException("Unknown function: " + fid);
+        }
+        return builder.buildEvaluatorFactory(fid, args);
+    }
+}
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/incubator-asterixdb-hyracks/blob/9939b48e/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/BagType.java
----------------------------------------------------------------------
diff --git a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/BagType.java b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/BagType.java
new file mode 100644
index 0000000..9aec8bb
--- /dev/null
+++ b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/BagType.java
@@ -0,0 +1,22 @@
+/*
+ * Copyright 2009-2013 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.hyracks.algebricks.examples.piglet.types;
+
+public class BagType extends Type {
+    @Override
+    public Tag getTag() {
+        return Tag.BAG;
+    }
+}
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/incubator-asterixdb-hyracks/blob/9939b48e/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/CharArrayType.java
----------------------------------------------------------------------
diff --git a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/CharArrayType.java b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/CharArrayType.java
new file mode 100644
index 0000000..4bef8ff
--- /dev/null
+++ b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/CharArrayType.java
@@ -0,0 +1,27 @@
+/*
+ * Copyright 2009-2013 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.hyracks.algebricks.examples.piglet.types;
+
+public class CharArrayType extends Type {
+    public static final Type INSTANCE = new CharArrayType();
+
+    private CharArrayType() {
+    }
+
+    @Override
+    public Tag getTag() {
+        return Tag.CHAR_ARRAY;
+    }
+}
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/incubator-asterixdb-hyracks/blob/9939b48e/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/DoubleType.java
----------------------------------------------------------------------
diff --git a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/DoubleType.java b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/DoubleType.java
new file mode 100644
index 0000000..8b7a0bd
--- /dev/null
+++ b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/DoubleType.java
@@ -0,0 +1,27 @@
+/*
+ * Copyright 2009-2013 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.hyracks.algebricks.examples.piglet.types;
+
+public class DoubleType extends Type {
+    public static final Type INSTANCE = new DoubleType();
+
+    private DoubleType() {
+    }
+
+    @Override
+    public Tag getTag() {
+        return Tag.DOUBLE;
+    }
+}
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/incubator-asterixdb-hyracks/blob/9939b48e/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/FloatType.java
----------------------------------------------------------------------
diff --git a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/FloatType.java b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/FloatType.java
new file mode 100644
index 0000000..69f5db6
--- /dev/null
+++ b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/FloatType.java
@@ -0,0 +1,27 @@
+/*
+ * Copyright 2009-2013 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.hyracks.algebricks.examples.piglet.types;
+
+public class FloatType extends Type {
+    public static final Type INSTANCE = new FloatType();
+
+    private FloatType() {
+    }
+
+    @Override
+    public Tag getTag() {
+        return Tag.FLOAT;
+    }
+}
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/incubator-asterixdb-hyracks/blob/9939b48e/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/IntegerType.java
----------------------------------------------------------------------
diff --git a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/IntegerType.java b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/IntegerType.java
new file mode 100644
index 0000000..9c568df
--- /dev/null
+++ b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/IntegerType.java
@@ -0,0 +1,27 @@
+/*
+ * Copyright 2009-2013 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.hyracks.algebricks.examples.piglet.types;
+
+public class IntegerType extends Type {
+    public static final Type INSTANCE = new IntegerType();
+
+    private IntegerType() {
+    }
+
+    @Override
+    public Tag getTag() {
+        return Tag.INTEGER;
+    }
+}
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/incubator-asterixdb-hyracks/blob/9939b48e/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/LongType.java
----------------------------------------------------------------------
diff --git a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/LongType.java b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/LongType.java
new file mode 100644
index 0000000..b992afc
--- /dev/null
+++ b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/LongType.java
@@ -0,0 +1,27 @@
+/*
+ * Copyright 2009-2013 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.hyracks.algebricks.examples.piglet.types;
+
+public class LongType extends Type {
+    public static final Type INSTANCE = new LongType();
+
+    private LongType() {
+    }
+
+    @Override
+    public Tag getTag() {
+        return Tag.LONG;
+    }
+}
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/incubator-asterixdb-hyracks/blob/9939b48e/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/MapType.java
----------------------------------------------------------------------
diff --git a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/MapType.java b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/MapType.java
new file mode 100644
index 0000000..a46e40d
--- /dev/null
+++ b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/MapType.java
@@ -0,0 +1,22 @@
+/*
+ * Copyright 2009-2013 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.hyracks.algebricks.examples.piglet.types;
+
+public class MapType extends Type {
+    @Override
+    public Tag getTag() {
+        return Tag.MAP;
+    }
+}
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/incubator-asterixdb-hyracks/blob/9939b48e/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/Schema.java
----------------------------------------------------------------------
diff --git a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/Schema.java b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/Schema.java
new file mode 100644
index 0000000..1702353
--- /dev/null
+++ b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/Schema.java
@@ -0,0 +1,31 @@
+/*
+ * Copyright 2009-2013 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.hyracks.algebricks.examples.piglet.types;
+
+import java.util.List;
+
+import edu.uci.ics.hyracks.algebricks.common.utils.Pair;
+
+public class Schema {
+    private List<Pair<String, Type>> schema;
+
+    public Schema(List<Pair<String, Type>> schema) {
+        this.schema = schema;
+    }
+
+    public List<Pair<String, Type>> getSchema() {
+        return schema;
+    }
+}
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/incubator-asterixdb-hyracks/blob/9939b48e/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/TupleType.java
----------------------------------------------------------------------
diff --git a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/TupleType.java b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/TupleType.java
new file mode 100644
index 0000000..429026f
--- /dev/null
+++ b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/TupleType.java
@@ -0,0 +1,22 @@
+/*
+ * Copyright 2009-2013 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.hyracks.algebricks.examples.piglet.types;
+
+public class TupleType extends Type {
+    @Override
+    public Tag getTag() {
+        return Tag.TUPLE;
+    }
+}
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/incubator-asterixdb-hyracks/blob/9939b48e/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/Type.java
----------------------------------------------------------------------
diff --git a/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/Type.java b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/Type.java
new file mode 100644
index 0000000..36efcea
--- /dev/null
+++ b/algebricks/algebricks-examples/piglet-example/src/main/java/org/apache/hyracks/algebricks/examples/piglet/types/Type.java
@@ -0,0 +1,30 @@
+/*
+ * Copyright 2009-2013 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.hyracks.algebricks.examples.piglet.types;
+
+public abstract class Type {
+    public enum Tag {
+        INTEGER,
+        LONG,
+        FLOAT,
+        DOUBLE,
+        CHAR_ARRAY,
+        TUPLE,
+        BAG,
+        MAP
+    }
+    
+    public abstract Tag getTag();
+}
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/incubator-asterixdb-hyracks/blob/9939b48e/algebricks/algebricks-examples/piglet-example/src/test/java/edu/uci/ics/algebricks/examples/piglet/test/PigletTest.java
----------------------------------------------------------------------
diff --git a/algebricks/algebricks-examples/piglet-example/src/test/java/edu/uci/ics/algebricks/examples/piglet/test/PigletTest.java b/algebricks/algebricks-examples/piglet-example/src/test/java/edu/uci/ics/algebricks/examples/piglet/test/PigletTest.java
deleted file mode 100644
index e50b442..0000000
--- a/algebricks/algebricks-examples/piglet-example/src/test/java/edu/uci/ics/algebricks/examples/piglet/test/PigletTest.java
+++ /dev/null
@@ -1,43 +0,0 @@
-/*
- * Copyright 2009-2013 by The Regents of the University of California
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * you may obtain a copy of the License from
- * 
- *     http://www.apache.org/licenses/LICENSE-2.0
- * 
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package edu.uci.ics.algebricks.examples.piglet.test;
-
-import java.io.File;
-
-import junit.framework.Test;
-import junit.framework.TestSuite;
-
-public class PigletTest {
-    public static Test suite() {
-        TestSuite suite = new TestSuite();
-        File dir = new File("testcases");
-        findAndAddTests(suite, dir);
-
-        return suite;
-    }
-
-    private static void findAndAddTests(TestSuite suite, File dir) {
-        for (final File f : dir.listFiles()) {
-            if (f.getName().startsWith(".")) {
-                continue;
-            }
-            if (f.isDirectory()) {
-                findAndAddTests(suite, f);
-            } else if (f.getName().endsWith(".piglet")) {
-                suite.addTest(new PigletTestCase(f));
-            }
-        }
-    }
-}

http://git-wip-us.apache.org/repos/asf/incubator-asterixdb-hyracks/blob/9939b48e/algebricks/algebricks-examples/piglet-example/src/test/java/edu/uci/ics/algebricks/examples/piglet/test/PigletTestCase.java
----------------------------------------------------------------------
diff --git a/algebricks/algebricks-examples/piglet-example/src/test/java/edu/uci/ics/algebricks/examples/piglet/test/PigletTestCase.java b/algebricks/algebricks-examples/piglet-example/src/test/java/edu/uci/ics/algebricks/examples/piglet/test/PigletTestCase.java
deleted file mode 100644
index 082a0b0..0000000
--- a/algebricks/algebricks-examples/piglet-example/src/test/java/edu/uci/ics/algebricks/examples/piglet/test/PigletTestCase.java
+++ /dev/null
@@ -1,56 +0,0 @@
-/*
- * Copyright 2009-2013 by The Regents of the University of California
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * you may obtain a copy of the License from
- * 
- *     http://www.apache.org/licenses/LICENSE-2.0
- * 
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package edu.uci.ics.algebricks.examples.piglet.test;
-
-import java.io.File;
-import java.io.FileReader;
-import java.util.List;
-
-import junit.framework.TestCase;
-
-import org.junit.Test;
-
-import edu.uci.ics.hyracks.algebricks.examples.piglet.ast.ASTNode;
-import edu.uci.ics.hyracks.algebricks.examples.piglet.compiler.PigletCompiler;
-import edu.uci.ics.hyracks.api.job.JobSpecification;
-
-public class PigletTestCase extends TestCase {
-
-    private final File file;
-
-    PigletTestCase(File file) {
-        super("testPiglet");
-        this.file = file;
-    }
-
-    @Test
-    public void testPiglet() {
-        try {
-            FileReader in = new FileReader(file);
-            try {
-                PigletCompiler c = new PigletCompiler();
-
-                List<ASTNode> ast = c.parse(in);
-                JobSpecification jobSpec = c.compile(ast);
-
-                System.err.println(jobSpec.toJSON());
-            } finally {
-                in.close();
-            }
-        } catch (Exception e) {
-            throw new RuntimeException(e);
-        }
-    }
-}

http://git-wip-us.apache.org/repos/asf/incubator-asterixdb-hyracks/blob/9939b48e/algebricks/algebricks-examples/piglet-example/src/test/java/org/apache/algebricks/examples/piglet/test/PigletTest.java
----------------------------------------------------------------------
diff --git a/algebricks/algebricks-examples/piglet-example/src/test/java/org/apache/algebricks/examples/piglet/test/PigletTest.java b/algebricks/algebricks-examples/piglet-example/src/test/java/org/apache/algebricks/examples/piglet/test/PigletTest.java
new file mode 100644
index 0000000..e50b442
--- /dev/null
+++ b/algebricks/algebricks-examples/piglet-example/src/test/java/org/apache/algebricks/examples/piglet/test/PigletTest.java
@@ -0,0 +1,43 @@
+/*
+ * Copyright 2009-2013 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.algebricks.examples.piglet.test;
+
+import java.io.File;
+
+import junit.framework.Test;
+import junit.framework.TestSuite;
+
+public class PigletTest {
+    public static Test suite() {
+        TestSuite suite = new TestSuite();
+        File dir = new File("testcases");
+        findAndAddTests(suite, dir);
+
+        return suite;
+    }
+
+    private static void findAndAddTests(TestSuite suite, File dir) {
+        for (final File f : dir.listFiles()) {
+            if (f.getName().startsWith(".")) {
+                continue;
+            }
+            if (f.isDirectory()) {
+                findAndAddTests(suite, f);
+            } else if (f.getName().endsWith(".piglet")) {
+                suite.addTest(new PigletTestCase(f));
+            }
+        }
+    }
+}

http://git-wip-us.apache.org/repos/asf/incubator-asterixdb-hyracks/blob/9939b48e/algebricks/algebricks-examples/piglet-example/src/test/java/org/apache/algebricks/examples/piglet/test/PigletTestCase.java
----------------------------------------------------------------------
diff --git a/algebricks/algebricks-examples/piglet-example/src/test/java/org/apache/algebricks/examples/piglet/test/PigletTestCase.java b/algebricks/algebricks-examples/piglet-example/src/test/java/org/apache/algebricks/examples/piglet/test/PigletTestCase.java
new file mode 100644
index 0000000..082a0b0
--- /dev/null
+++ b/algebricks/algebricks-examples/piglet-example/src/test/java/org/apache/algebricks/examples/piglet/test/PigletTestCase.java
@@ -0,0 +1,56 @@
+/*
+ * Copyright 2009-2013 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.algebricks.examples.piglet.test;
+
+import java.io.File;
+import java.io.FileReader;
+import java.util.List;
+
+import junit.framework.TestCase;
+
+import org.junit.Test;
+
+import edu.uci.ics.hyracks.algebricks.examples.piglet.ast.ASTNode;
+import edu.uci.ics.hyracks.algebricks.examples.piglet.compiler.PigletCompiler;
+import edu.uci.ics.hyracks.api.job.JobSpecification;
+
+public class PigletTestCase extends TestCase {
+
+    private final File file;
+
+    PigletTestCase(File file) {
+        super("testPiglet");
+        this.file = file;
+    }
+
+    @Test
+    public void testPiglet() {
+        try {
+            FileReader in = new FileReader(file);
+            try {
+                PigletCompiler c = new PigletCompiler();
+
+                List<ASTNode> ast = c.parse(in);
+                JobSpecification jobSpec = c.compile(ast);
+
+                System.err.println(jobSpec.toJSON());
+            } finally {
+                in.close();
+            }
+        } catch (Exception e) {
+            throw new RuntimeException(e);
+        }
+    }
+}

http://git-wip-us.apache.org/repos/asf/incubator-asterixdb-hyracks/blob/9939b48e/algebricks/algebricks-rewriter/src/main/java/edu/uci/ics/hyracks/algebricks/rewriter/rules/AbstractDecorrelationRule.java
----------------------------------------------------------------------
diff --git a/algebricks/algebricks-rewriter/src/main/java/edu/uci/ics/hyracks/algebricks/rewriter/rules/AbstractDecorrelationRule.java b/algebricks/algebricks-rewriter/src/main/java/edu/uci/ics/hyracks/algebricks/rewriter/rules/AbstractDecorrelationRule.java
deleted file mode 100644
index f897791..0000000
--- a/algebricks/algebricks-rewriter/src/main/java/edu/uci/ics/hyracks/algebricks/rewriter/rules/AbstractDecorrelationRule.java
+++ /dev/null
@@ -1,104 +0,0 @@
-/*
- * Copyright 2009-2013 by The Regents of the University of California
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * you may obtain a copy of the License from
- * 
- *     http://www.apache.org/licenses/LICENSE-2.0
- * 
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package edu.uci.ics.hyracks.algebricks.rewriter.rules;
-
-import java.util.Collection;
-import java.util.HashSet;
-import java.util.List;
-import java.util.Set;
-
-import org.apache.commons.lang3.mutable.Mutable;
-import org.apache.commons.lang3.mutable.MutableObject;
-
-import edu.uci.ics.hyracks.algebricks.common.exceptions.AlgebricksException;
-import edu.uci.ics.hyracks.algebricks.common.utils.Pair;
-import edu.uci.ics.hyracks.algebricks.core.algebra.base.ILogicalExpression;
-import edu.uci.ics.hyracks.algebricks.core.algebra.base.ILogicalOperator;
-import edu.uci.ics.hyracks.algebricks.core.algebra.base.ILogicalPlan;
-import edu.uci.ics.hyracks.algebricks.core.algebra.base.IOptimizationContext;
-import edu.uci.ics.hyracks.algebricks.core.algebra.base.LogicalOperatorTag;
-import edu.uci.ics.hyracks.algebricks.core.algebra.base.LogicalVariable;
-import edu.uci.ics.hyracks.algebricks.core.algebra.expressions.VariableReferenceExpression;
-import edu.uci.ics.hyracks.algebricks.core.algebra.operators.logical.AbstractLogicalOperator;
-import edu.uci.ics.hyracks.algebricks.core.algebra.operators.logical.GroupByOperator;
-import edu.uci.ics.hyracks.algebricks.core.algebra.properties.FunctionalDependency;
-import edu.uci.ics.hyracks.algebricks.core.algebra.util.OperatorManipulationUtil;
-import edu.uci.ics.hyracks.algebricks.core.rewriter.base.IAlgebraicRewriteRule;
-import edu.uci.ics.hyracks.algebricks.rewriter.util.PhysicalOptimizationsUtil;
-
-public abstract class AbstractDecorrelationRule implements IAlgebraicRewriteRule {
-
-    @Override
-    public boolean rewritePre(Mutable<ILogicalOperator> opRef, IOptimizationContext context) {
-        return false;
-    }
-
-    protected boolean descOrSelfIsScanOrJoin(AbstractLogicalOperator op2) {
-        LogicalOperatorTag t = op2.getOperatorTag();
-        if (isScanOrJoin(t)) {
-            return true;
-        }
-        if (op2.getInputs().size() != 1) {
-            return false;
-        }
-        AbstractLogicalOperator alo = (AbstractLogicalOperator) op2.getInputs().get(0).getValue();
-        if (descOrSelfIsScanOrJoin(alo)) {
-            return true;
-        }
-        return false;
-    }
-
-    protected boolean isScanOrJoin(LogicalOperatorTag t) {
-        if (t == LogicalOperatorTag.DATASOURCESCAN || t == LogicalOperatorTag.INNERJOIN
-                || t == LogicalOperatorTag.UNNEST || t == LogicalOperatorTag.UNNEST_MAP
-                || t == LogicalOperatorTag.LEFTOUTERJOIN) {
-            return true;
-        }
-        return false;
-    }
-
-    protected Set<LogicalVariable> computeGbyVarsUsingPksOnly(Set<LogicalVariable> varSet, AbstractLogicalOperator op,
-            IOptimizationContext context) throws AlgebricksException {
-        PhysicalOptimizationsUtil.computeFDsAndEquivalenceClasses(op, context);
-        List<FunctionalDependency> fdList = context.getFDList(op);
-        if (fdList == null) {
-            return null;
-        }
-        // check if any of the FDs is a key
-        for (FunctionalDependency fd : fdList) {
-            if (fd.getTail().containsAll(varSet)) {
-                return new HashSet<LogicalVariable>(fd.getHead());
-            }
-        }
-        return null;
-    }
-
-    protected void buildVarExprList(Collection<LogicalVariable> vars, IOptimizationContext context, GroupByOperator g,
-            List<Pair<LogicalVariable, Mutable<ILogicalExpression>>> outVeList) throws AlgebricksException {
-        for (LogicalVariable ov : vars) {
-            LogicalVariable newVar = context.newVar();
-            ILogicalExpression varExpr = new VariableReferenceExpression(newVar);
-            outVeList.add(new Pair<LogicalVariable, Mutable<ILogicalExpression>>(ov,
-                    new MutableObject<ILogicalExpression>(varExpr)));
-            for (ILogicalPlan p : g.getNestedPlans()) {
-                for (Mutable<ILogicalOperator> r : p.getRoots()) {
-                    OperatorManipulationUtil.substituteVarRec((AbstractLogicalOperator) r.getValue(), ov, newVar, true,
-                            context);
-                }
-            }
-        }
-    }
-
-}

http://git-wip-us.apache.org/repos/asf/incubator-asterixdb-hyracks/blob/9939b48e/algebricks/algebricks-rewriter/src/main/java/edu/uci/ics/hyracks/algebricks/rewriter/rules/AbstractExtractExprRule.java
----------------------------------------------------------------------
diff --git a/algebricks/algebricks-rewriter/src/main/java/edu/uci/ics/hyracks/algebricks/rewriter/rules/AbstractExtractExprRule.java b/algebricks/algebricks-rewriter/src/main/java/edu/uci/ics/hyracks/algebricks/rewriter/rules/AbstractExtractExprRule.java
deleted file mode 100644
index 882db41..0000000
--- a/algebricks/algebricks-rewriter/src/main/java/edu/uci/ics/hyracks/algebricks/rewriter/rules/AbstractExtractExprRule.java
+++ /dev/null
@@ -1,44 +0,0 @@
-/*
- * Copyright 2009-2013 by The Regents of the University of California
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * you may obtain a copy of the License from
- * 
- *     http://www.apache.org/licenses/LICENSE-2.0
- * 
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package edu.uci.ics.hyracks.algebricks.rewriter.rules;
-
-import org.apache.commons.lang3.mutable.Mutable;
-import org.apache.commons.lang3.mutable.MutableObject;
-
-import edu.uci.ics.hyracks.algebricks.common.exceptions.AlgebricksException;
-import edu.uci.ics.hyracks.algebricks.core.algebra.base.ILogicalExpression;
-import edu.uci.ics.hyracks.algebricks.core.algebra.base.ILogicalOperator;
-import edu.uci.ics.hyracks.algebricks.core.algebra.base.IOptimizationContext;
-import edu.uci.ics.hyracks.algebricks.core.algebra.base.LogicalExpressionTag;
-import edu.uci.ics.hyracks.algebricks.core.algebra.base.LogicalVariable;
-import edu.uci.ics.hyracks.algebricks.core.algebra.operators.logical.AssignOperator;
-import edu.uci.ics.hyracks.algebricks.core.rewriter.base.IAlgebraicRewriteRule;
-
-public abstract class AbstractExtractExprRule implements IAlgebraicRewriteRule {
-
-    protected LogicalVariable extractExprIntoAssignOpRef(ILogicalExpression gExpr, Mutable<ILogicalOperator> opRef2,
-            IOptimizationContext context) throws AlgebricksException {
-        LogicalVariable v = context.newVar();
-        AssignOperator a = new AssignOperator(v, new MutableObject<ILogicalExpression>(gExpr));
-        a.getInputs().add(new MutableObject<ILogicalOperator>(opRef2.getValue()));
-        opRef2.setValue(a);
-        if (gExpr.getExpressionTag() == LogicalExpressionTag.CONSTANT) {
-            context.addNotToBeInlinedVar(v);
-        }
-        context.computeAndSetTypeEnvironmentForOperator(a);
-        return v;
-    }
-
-}


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