1 files changed, 71 insertions, 0 deletions
diff --git a/sandbox/ctrezzo/Map-Reduce-Java/src/main/java/services/IntermediateCollectorImpl.java b/sandbox/ctrezzo/Map-Reduce-Java/src/main/java/services/IntermediateCollectorImpl.java
new file mode 100644
index 0000000000..5fd5661ea2
--- /dev/null
+++ b/sandbox/ctrezzo/Map-Reduce-Java/src/main/java/services/IntermediateCollectorImpl.java
@@ -0,0 +1,71 @@
+/*
+ * 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 services;
+
+import java.util.Iterator;
+import java.util.Vector;
+
+import org.osoa.sca.annotations.Reference;
+
+public class IntermediateCollectorImpl implements IntermediateCollector {
+
+private Vector<KeyValuePair> table = new Vector<KeyValuePair>();
+	
+	@Reference
+	public Reducer myReducer;
+	
+	
+	public void collect(String key, int value) {
+		table.add(new KeyValuePair(key, value));
+	}
+	
+	public void reducePhase() {	
+		java.util.Collections.sort(table);
+		
+		Iterator<KeyValuePair> it = table.iterator();
+		
+		//no data
+		if(!it.hasNext()) {
+			return;
+		}
+		
+		Vector<Integer> values = new Vector<Integer>();
+		KeyValuePair last = it.next();
+		values.add(last.value);
+		while(it.hasNext()) {
+			KeyValuePair curr = it.next();
+			if(last.compareTo(curr) == 0) {
+				values.add(curr.value);
+				last = curr;
+			}
+			else {
+				myReducer.reduce(last.key, values.iterator());
+				values.clear();
+				values.add(curr.value);
+				last = curr;
+				
+			}	
+		}
+		
+		myReducer.reduce(last.key, values.iterator());
+		
+	}
+
+}