pylucene 3.5.0-3

[pylucene.git] / lucene-java-3.5.0 / lucene / src / java / org / apache / lucene / index / DocInverter.java

diff --git a/lucene-java-3.5.0/lucene/src/java/org/apache/lucene/index/DocInverter.java b/lucene-java-3.5.0/lucene/src/java/org/apache/lucene/index/DocInverter.java
new file mode 100644 (file)
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--- /dev/null
+++ b/lucene-java-3.5.0/lucene/src/java/org/apache/lucene/index/DocInverter.java
@@ -0,0 +1,92 @@
+package org.apache.lucene.index;
+
+/**
+ * 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.
+ */
+
+import java.io.IOException;
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.HashSet;
+
+import java.util.Map;
+
+
+/** This is a DocFieldConsumer that inverts each field,
+ *  separately, from a Document, and accepts a
+ *  InvertedTermsConsumer to process those terms. */
+
+final class DocInverter extends DocFieldConsumer {
+
+  final InvertedDocConsumer consumer;
+  final InvertedDocEndConsumer endConsumer;
+
+  public DocInverter(InvertedDocConsumer consumer, InvertedDocEndConsumer endConsumer) {
+    this.consumer = consumer;
+    this.endConsumer = endConsumer;
+  }
+
+  @Override
+  void setFieldInfos(FieldInfos fieldInfos) {
+    super.setFieldInfos(fieldInfos);
+    consumer.setFieldInfos(fieldInfos);
+    endConsumer.setFieldInfos(fieldInfos);
+  }
+
+  @Override
+  void flush(Map<DocFieldConsumerPerThread, Collection<DocFieldConsumerPerField>> threadsAndFields, SegmentWriteState state) throws IOException {
+
+    Map<InvertedDocConsumerPerThread,Collection<InvertedDocConsumerPerField>> childThreadsAndFields = new HashMap<InvertedDocConsumerPerThread,Collection<InvertedDocConsumerPerField>>();
+    Map<InvertedDocEndConsumerPerThread,Collection<InvertedDocEndConsumerPerField>> endChildThreadsAndFields = new HashMap<InvertedDocEndConsumerPerThread,Collection<InvertedDocEndConsumerPerField>>();
+
+    for (Map.Entry<DocFieldConsumerPerThread,Collection<DocFieldConsumerPerField>> entry : threadsAndFields.entrySet() ) {
+      DocInverterPerThread perThread = (DocInverterPerThread) entry.getKey();
+
+      Collection<InvertedDocConsumerPerField> childFields = new HashSet<InvertedDocConsumerPerField>();
+      Collection<InvertedDocEndConsumerPerField> endChildFields = new HashSet<InvertedDocEndConsumerPerField>();
+      for (final DocFieldConsumerPerField field: entry.getValue() ) {  
+        DocInverterPerField perField = (DocInverterPerField) field;
+        childFields.add(perField.consumer);
+        endChildFields.add(perField.endConsumer);
+      }
+
+      childThreadsAndFields.put(perThread.consumer, childFields);
+      endChildThreadsAndFields.put(perThread.endConsumer, endChildFields);
+    }
+    
+    consumer.flush(childThreadsAndFields, state);
+    endConsumer.flush(endChildThreadsAndFields, state);
+  }
+
+  @Override
+  void abort() {
+    try {
+      consumer.abort();
+    } finally {
+      endConsumer.abort();
+    }
+  }
+
+  @Override
+  public boolean freeRAM() {
+    return consumer.freeRAM();
+  }
+
+  @Override
+  public DocFieldConsumerPerThread addThread(DocFieldProcessorPerThread docFieldProcessorPerThread) {
+    return new DocInverterPerThread(docFieldProcessorPerThread, this);
+  }
+}