pylucene 3.5.0-3

[pylucene.git] / lucene-java-3.5.0 / lucene / contrib / facet / src / java / org / apache / lucene / facet / index / streaming / CategoryTokenizer.java

diff --git a/lucene-java-3.5.0/lucene/contrib/facet/src/java/org/apache/lucene/facet/index/streaming/CategoryTokenizer.java b/lucene-java-3.5.0/lucene/contrib/facet/src/java/org/apache/lucene/facet/index/streaming/CategoryTokenizer.java
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+++ b/lucene-java-3.5.0/lucene/contrib/facet/src/java/org/apache/lucene/facet/index/streaming/CategoryTokenizer.java
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+package org.apache.lucene.facet.index.streaming;
+
+import java.io.IOException;
+
+import org.apache.lucene.analysis.TokenStream;
+import org.apache.lucene.analysis.tokenattributes.PayloadAttribute;
+import org.apache.lucene.analysis.tokenattributes.CharTermAttribute;
+
+import org.apache.lucene.facet.index.params.FacetIndexingParams;
+import org.apache.lucene.facet.taxonomy.CategoryPath;
+
+/**
+ * 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.
+ */
+
+/**
+ * Basic class for setting the {@link CharTermAttribute}s and
+ * {@link PayloadAttribute}s of category tokens.
+ * 
+ * @lucene.experimental
+ */
+public class CategoryTokenizer extends CategoryTokenizerBase {
+
+  /**
+   * @see CategoryTokenizerBase#CategoryTokenizerBase(TokenStream,
+   *      FacetIndexingParams)
+   */
+  public CategoryTokenizer(TokenStream input,
+      FacetIndexingParams indexingParams) {
+    super(input, indexingParams);
+  }
+
+  @Override
+  public final boolean incrementToken() throws IOException {
+    if (input.incrementToken()) {
+      if (categoryAttribute != null && categoryAttribute.getCategoryPath() != null) {
+        CategoryPath categoryPath = categoryAttribute.getCategoryPath();
+        char[] termBuffer = termAttribute.resizeBuffer(categoryPath.charsNeededForFullPath());
+        int nChars = indexingParams.drillDownTermText(categoryPath, termBuffer);
+        termAttribute.setLength(nChars);
+        setPayload();
+      }
+      return true;
+    }
+    return false;
+  }
+
+  /**
+   * Set the payload of the current category token.
+   */
+  protected void setPayload() {
+  }
+
+}