pylucene 3.5.0-3

[pylucene.git] / lucene-java-3.4.0 / lucene / src / java / org / apache / lucene / analysis / CachingTokenFilter.java

diff --git a/lucene-java-3.4.0/lucene/src/java/org/apache/lucene/analysis/CachingTokenFilter.java b/lucene-java-3.4.0/lucene/src/java/org/apache/lucene/analysis/CachingTokenFilter.java
deleted file mode 100644 (file)
index 9885ace..0000000
--- a/lucene-java-3.4.0/lucene/src/java/org/apache/lucene/analysis/CachingTokenFilter.java
+++ /dev/null
@@ -1,86 +0,0 @@
-package org.apache.lucene.analysis;
-
-/**
- * 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.Iterator;
-import java.util.LinkedList;
-import java.util.List;
-
-import org.apache.lucene.util.AttributeSource;
-
-/**
- * This class can be used if the token attributes of a TokenStream
- * are intended to be consumed more than once. It caches
- * all token attribute states locally in a List.
- * 
- * <P>CachingTokenFilter implements the optional method
- * {@link TokenStream#reset()}, which repositions the
- * stream to the first Token. 
- */
-public final class CachingTokenFilter extends TokenFilter {
-  private List<AttributeSource.State> cache = null;
-  private Iterator<AttributeSource.State> iterator = null; 
-  private AttributeSource.State finalState;
-  
-  public CachingTokenFilter(TokenStream input) {
-    super(input);
-  }
-  
-  @Override
-  public final boolean incrementToken() throws IOException {
-    if (cache == null) {
-      // fill cache lazily
-      cache = new LinkedList<AttributeSource.State>();
-      fillCache();
-      iterator = cache.iterator();
-    }
-    
-    if (!iterator.hasNext()) {
-      // the cache is exhausted, return false
-      return false;
-    }
-    // Since the TokenFilter can be reset, the tokens need to be preserved as immutable.
-    restoreState(iterator.next());
-    return true;
-  }
-  
-  @Override
-  public final void end() throws IOException {
-    if (finalState != null) {
-      restoreState(finalState);
-    }
-  }
-
-  @Override
-  public void reset() throws IOException {
-    if(cache != null) {
-      iterator = cache.iterator();
-    }
-  }
-  
-  private void fillCache() throws IOException {
-    while(input.incrementToken()) {
-      cache.add(captureState());
-    }
-    // capture final state
-    input.end();
-    finalState = captureState();
-  }
-
-}