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From fguilla...@apache.org
Subject svn commit: r1037726 - /incubator/chemistry/opencmis/trunk/chemistry-opencmis-client/chemistry-opencmis-client-impl/src/main/java/org/apache/chemistry/opencmis/client/runtime/util/EmptyItemIterable.java
Date Mon, 22 Nov 2010 14:08:25 GMT
Author: fguillaume
Date: Mon Nov 22 14:08:25 2010
New Revision: 1037726

URL: http://svn.apache.org/viewvc?rev=1037726&view=rev
Log:
Added utility EmptyItemIterable

Added:
    incubator/chemistry/opencmis/trunk/chemistry-opencmis-client/chemistry-opencmis-client-impl/src/main/java/org/apache/chemistry/opencmis/client/runtime/util/EmptyItemIterable.java
  (with props)

Added: incubator/chemistry/opencmis/trunk/chemistry-opencmis-client/chemistry-opencmis-client-impl/src/main/java/org/apache/chemistry/opencmis/client/runtime/util/EmptyItemIterable.java
URL: http://svn.apache.org/viewvc/incubator/chemistry/opencmis/trunk/chemistry-opencmis-client/chemistry-opencmis-client-impl/src/main/java/org/apache/chemistry/opencmis/client/runtime/util/EmptyItemIterable.java?rev=1037726&view=auto
==============================================================================
--- incubator/chemistry/opencmis/trunk/chemistry-opencmis-client/chemistry-opencmis-client-impl/src/main/java/org/apache/chemistry/opencmis/client/runtime/util/EmptyItemIterable.java
(added)
+++ incubator/chemistry/opencmis/trunk/chemistry-opencmis-client/chemistry-opencmis-client-impl/src/main/java/org/apache/chemistry/opencmis/client/runtime/util/EmptyItemIterable.java
Mon Nov 22 14:08:25 2010
@@ -0,0 +1,89 @@
+/*
+ * 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.client.runtime.util;
+
+import java.util.Iterator;
+import java.util.NoSuchElementException;
+
+import org.apache.chemistry.opencmis.client.api.ItemIterable;
+
+/**
+ * An empty item iterable.
+ */
+public class EmptyItemIterable<T> implements ItemIterable<T> {
+
+    public static final EmptyItemIterable<?> INSTANCE = new EmptyItemIterable<Object>();
+
+    @SuppressWarnings("unchecked")
+    public static <U> EmptyItemIterable<U> instance() {
+        return (EmptyItemIterable<U>) INSTANCE;
+    }
+
+    public ItemIterable<T> skipTo(long position) {
+        if (position != 0) {
+            throw new IllegalArgumentException(String.valueOf(position));
+        }
+        return this;
+    }
+
+    public ItemIterable<T> getPage() {
+        return this;
+    }
+
+    public ItemIterable<T> getPage(int maxNumItems) {
+        return this;
+    }
+
+    @SuppressWarnings("unchecked")
+    public Iterator<T> iterator() {
+        return (Iterator<T>) EmptyIterator.INSTANCE;
+    }
+
+    public long getPageNumItems() {
+        return 0;
+    }
+
+    public boolean getHasMoreItems() {
+        return false;
+    }
+
+    public long getTotalNumItems() {
+        return 0;
+    }
+
+    /**
+     * An empty iterator.
+     */
+    public static class EmptyIterator<V> implements Iterator<V> {
+        public static final Iterator<?> INSTANCE = new EmptyIterator<Object>();
+
+        public boolean hasNext() {
+            return false;
+        }
+
+        public V next() {
+            throw new NoSuchElementException();
+        }
+
+        public void remove() {
+            throw new UnsupportedOperationException();
+        }
+    }
+
+}

Propchange: incubator/chemistry/opencmis/trunk/chemistry-opencmis-client/chemistry-opencmis-client-impl/src/main/java/org/apache/chemistry/opencmis/client/runtime/util/EmptyItemIterable.java
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Propchange: incubator/chemistry/opencmis/trunk/chemistry-opencmis-client/chemistry-opencmis-client-impl/src/main/java/org/apache/chemistry/opencmis/client/runtime/util/EmptyItemIterable.java
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Propchange: incubator/chemistry/opencmis/trunk/chemistry-opencmis-client/chemistry-opencmis-client-impl/src/main/java/org/apache/chemistry/opencmis/client/runtime/util/EmptyItemIterable.java
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