pylucene 3.5.0-3

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

diff --git a/lucene-java-3.4.0/lucene/src/java/org/apache/lucene/analysis/FilteringTokenFilter.java b/lucene-java-3.4.0/lucene/src/java/org/apache/lucene/analysis/FilteringTokenFilter.java
deleted file mode 100644 (file)
index adedc7d..0000000
--- a/lucene-java-3.4.0/lucene/src/java/org/apache/lucene/analysis/FilteringTokenFilter.java
+++ /dev/null
@@ -1,94 +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 org.apache.lucene.analysis.tokenattributes.PositionIncrementAttribute;
-import org.apache.lucene.queryParser.QueryParser; // for javadoc
-
-/**
- * Abstract base class for TokenFilters that may remove tokens.
- * You have to implement {@link #accept} and return a boolean if the current
- * token should be preserved. {@link #incrementToken} uses this method
- * to decide if a token should be passed to the caller.
- */
-public abstract class FilteringTokenFilter extends TokenFilter {
-
-  private final PositionIncrementAttribute posIncrAtt = addAttribute(PositionIncrementAttribute.class);
-  private boolean enablePositionIncrements; // no init needed, as ctor enforces setting value!
-
-  public FilteringTokenFilter(boolean enablePositionIncrements, TokenStream input){
-    super(input);
-    this.enablePositionIncrements = enablePositionIncrements;
-  }
-
-  /** Override this method and return if the current input token should be returned by {@link #incrementToken}. */
-  protected abstract boolean accept() throws IOException;
-
-  @Override
-  public final boolean incrementToken() throws IOException {
-    if (enablePositionIncrements) {
-      int skippedPositions = 0;
-      while (input.incrementToken()) {
-        if (accept()) {
-          if (skippedPositions != 0) {
-            posIncrAtt.setPositionIncrement(posIncrAtt.getPositionIncrement() + skippedPositions);
-          }
-          return true;
-        }
-        skippedPositions += posIncrAtt.getPositionIncrement();
-      }
-    } else {
-      while (input.incrementToken()) {
-        if (accept()) {
-          return true;
-        }
-      }
-    }
-    // reached EOS -- return false
-    return false;
-  }
-
-  /**
-   * @see #setEnablePositionIncrements(boolean)
-   */
-  public boolean getEnablePositionIncrements() {
-    return enablePositionIncrements;
-  }
-
-  /**
-   * If <code>true</code>, this TokenFilter will preserve
-   * positions of the incoming tokens (ie, accumulate and
-   * set position increments of the removed tokens).
-   * Generally, <code>true</code> is best as it does not
-   * lose information (positions of the original tokens)
-   * during indexing.
-   * 
-   * <p> When set, when a token is stopped
-   * (omitted), the position increment of the following
-   * token is incremented.
-   *
-   * <p> <b>NOTE</b>: be sure to also
-   * set {@link QueryParser#setEnablePositionIncrements} if
-   * you use QueryParser to create queries.
-   */
-  public void setEnablePositionIncrements(boolean enable) {
-    this.enablePositionIncrements = enable;
-  }
-}