pylucene 3.5.0-3

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

diff --git a/lucene-java-3.5.0/lucene/src/java/org/apache/lucene/index/DocInverterPerThread.java b/lucene-java-3.5.0/lucene/src/java/org/apache/lucene/index/DocInverterPerThread.java
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+++ b/lucene-java-3.5.0/lucene/src/java/org/apache/lucene/index/DocInverterPerThread.java
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+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 org.apache.lucene.util.AttributeSource;
+import org.apache.lucene.analysis.tokenattributes.OffsetAttribute;
+import org.apache.lucene.analysis.tokenattributes.CharTermAttribute;
+
+/** This is a DocFieldConsumer that inverts each field,
+ *  separately, from a Document, and accepts a
+ *  InvertedTermsConsumer to process those terms. */
+
+final class DocInverterPerThread extends DocFieldConsumerPerThread {
+  final DocInverter docInverter;
+  final InvertedDocConsumerPerThread consumer;
+  final InvertedDocEndConsumerPerThread endConsumer;
+  final SingleTokenAttributeSource singleToken = new SingleTokenAttributeSource();
+  
+  static class SingleTokenAttributeSource extends AttributeSource {
+    final CharTermAttribute termAttribute;
+    final OffsetAttribute offsetAttribute;
+    
+    private SingleTokenAttributeSource() {
+      termAttribute = addAttribute(CharTermAttribute.class);
+      offsetAttribute = addAttribute(OffsetAttribute.class);
+    }
+    
+    public void reinit(String stringValue, int startOffset,  int endOffset) {
+      termAttribute.setEmpty().append(stringValue);
+      offsetAttribute.setOffset(startOffset, endOffset);
+    }
+  }
+  
+  final DocumentsWriter.DocState docState;
+
+  final FieldInvertState fieldState = new FieldInvertState();
+
+  // Used to read a string value for a field
+  final ReusableStringReader stringReader = new ReusableStringReader();
+
+  public DocInverterPerThread(DocFieldProcessorPerThread docFieldProcessorPerThread, DocInverter docInverter) {
+    this.docInverter = docInverter;
+    docState = docFieldProcessorPerThread.docState;
+    consumer = docInverter.consumer.addThread(this);
+    endConsumer = docInverter.endConsumer.addThread(this);
+  }
+
+  @Override
+  public void startDocument() throws IOException {
+    consumer.startDocument();
+    endConsumer.startDocument();
+  }
+
+  @Override
+  public DocumentsWriter.DocWriter finishDocument() throws IOException {
+    // TODO: allow endConsumer.finishDocument to also return
+    // a DocWriter
+    endConsumer.finishDocument();
+    return consumer.finishDocument();
+  }
+
+  @Override
+  void abort() {
+    try {
+      consumer.abort();
+    } finally {
+      endConsumer.abort();
+    }
+  }
+
+  @Override
+  public DocFieldConsumerPerField addField(FieldInfo fi) {
+    return new DocInverterPerField(this, fi);
+  }
+}