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From j...@apache.org
Subject svn commit: r1026325 [2/2] - in /incubator/chemistry/opencmis/trunk/chemistry-opencmis-server: chemistry-opencmis-server-inmemory/src/main/java/org/apache/chemistry/opencmis/inmemory/query/ chemistry-opencmis-server-inmemory/src/test/java/org/apache/ch...
Date Fri, 22 Oct 2010 13:52:34 GMT
Added: incubator/chemistry/opencmis/trunk/chemistry-opencmis-server/chemistry-opencmis-server-support/src/main/java/org/apache/chemistry/opencmis/server/support/query/QueryUtil.java
URL: http://svn.apache.org/viewvc/incubator/chemistry/opencmis/trunk/chemistry-opencmis-server/chemistry-opencmis-server-support/src/main/java/org/apache/chemistry/opencmis/server/support/query/QueryUtil.java?rev=1026325&view=auto
==============================================================================
--- incubator/chemistry/opencmis/trunk/chemistry-opencmis-server/chemistry-opencmis-server-support/src/main/java/org/apache/chemistry/opencmis/server/support/query/QueryUtil.java
(added)
+++ incubator/chemistry/opencmis/trunk/chemistry-opencmis-server/chemistry-opencmis-server-support/src/main/java/org/apache/chemistry/opencmis/server/support/query/QueryUtil.java
Fri Oct 22 13:52:33 2010
@@ -0,0 +1,58 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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 at
+ *
+ * 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 org.apache.chemistry.opencmis.server.support.query;
+
+import java.io.ByteArrayInputStream;
+import java.io.IOException;
+import java.io.UnsupportedEncodingException;
+
+import org.antlr.runtime.ANTLRInputStream;
+import org.antlr.runtime.CharStream;
+import org.antlr.runtime.CommonTokenStream;
+import org.antlr.runtime.RecognitionException;
+import org.antlr.runtime.TokenSource;
+import org.antlr.runtime.TokenStream;
+import org.antlr.runtime.tree.CommonTree;
+import org.antlr.runtime.tree.CommonTreeNodeStream;
+import org.apache.chemistry.opencmis.server.support.query.CmisQlStrictParser_CmisBaseGrammar.query_return;
+
+/**
+ * Class with static methods that contains convenience methods to repeating functionality
+ * in context with query and ANTLR parsing
+ *
+ */
+public class QueryUtil extends QueryObject {
+
+    // convenience method because everybody needs this piece of code
+    static public CmisQueryWalker getWalker(String statement) throws UnsupportedEncodingException,
IOException, RecognitionException {
+        CharStream input = new ANTLRInputStream(new ByteArrayInputStream(statement.getBytes("UTF-8")));
+        TokenSource lexer = new CmisQlStrictLexer(input);
+        TokenStream tokens = new CommonTokenStream(lexer);
+        CmisQlStrictParser parser = new CmisQlStrictParser(tokens);
+        CommonTree parserTree; // the ANTLR tree after parsing phase
+
+        query_return parsedStatement = parser.query();
+        parserTree = (CommonTree) parsedStatement.getTree();
+
+        CommonTreeNodeStream nodes = new CommonTreeNodeStream(parserTree);
+        nodes.setTokenStream(tokens);
+        CmisQueryWalker walker = new CmisQueryWalker(nodes);
+        return walker;
+    }
+}



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