pylucene 3.5.0-3

[pylucene.git] / lucene-java-3.5.0 / lucene / contrib / analyzers / common / src / java / org / apache / lucene / analysis / sinks / TokenRangeSinkFilter.java

diff --git a/lucene-java-3.5.0/lucene/contrib/analyzers/common/src/java/org/apache/lucene/analysis/sinks/TokenRangeSinkFilter.java b/lucene-java-3.5.0/lucene/contrib/analyzers/common/src/java/org/apache/lucene/analysis/sinks/TokenRangeSinkFilter.java
new file mode 100644 (file)
index 0000000..e38ac8a
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+++ b/lucene-java-3.5.0/lucene/contrib/analyzers/common/src/java/org/apache/lucene/analysis/sinks/TokenRangeSinkFilter.java
@@ -0,0 +1,56 @@
+package org.apache.lucene.analysis.sinks;
+
+/**
+* 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.TeeSinkTokenFilter.SinkFilter;
+import org.apache.lucene.util.AttributeSource;
+
+/**
+ * Counts the tokens as they go by and saves to the internal list those between the range of lower and upper, exclusive of upper
+ *
+ **/
+public class TokenRangeSinkFilter extends SinkFilter {
+  private int lower;
+  private int upper;
+  private int count;
+
+  public TokenRangeSinkFilter(int lower, int upper) {
+    this.lower = lower;
+    this.upper = upper;
+  }
+
+  
+  @Override
+  public boolean accept(AttributeSource source) {
+    try {
+      if (count >= lower && count < upper){
+        return true;
+      }
+      return false;
+    } finally {
+      count++;
+    }
+  }
+
+  @Override
+  public void reset() throws IOException {
+    count = 0;
+  }
+}