pylucene 3.5.0-3

[pylucene.git] / lucene-java-3.5.0 / lucene / src / java / org / apache / lucene / search / SimilarityDelegator.java

diff --git a/lucene-java-3.5.0/lucene/src/java/org/apache/lucene/search/SimilarityDelegator.java b/lucene-java-3.5.0/lucene/src/java/org/apache/lucene/search/SimilarityDelegator.java
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+++ b/lucene-java-3.5.0/lucene/src/java/org/apache/lucene/search/SimilarityDelegator.java
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+package org.apache.lucene.search;
+
+import org.apache.lucene.index.FieldInvertState;
+
+/**
+ * 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.
+ */
+
+/** Expert: Delegating scoring implementation.  Useful in {@link
+ * Query#getSimilarity(Searcher)} implementations, to override only certain
+ * methods of a Searcher's Similarity implementation..
+ * @deprecated this class will be removed in 4.0.  Please
+ * subclass {@link Similarity} or {@link DefaultSimilarity} instead. */
+@Deprecated
+public class SimilarityDelegator extends Similarity {
+
+  private Similarity delegee;
+
+  /** Construct a {@link Similarity} that delegates all methods to another.
+   *
+   * @param delegee the Similarity implementation to delegate to
+   */
+  public SimilarityDelegator(Similarity delegee) {
+    this.delegee = delegee;
+  }
+
+  @Override
+  public float computeNorm(String fieldName, FieldInvertState state) {
+    return delegee.computeNorm(fieldName, state);
+  }
+
+  @Override
+  public float queryNorm(float sumOfSquaredWeights) {
+    return delegee.queryNorm(sumOfSquaredWeights);
+  }
+
+  @Override
+  public float tf(float freq) {
+    return delegee.tf(freq);
+  }
+    
+  @Override
+  public float sloppyFreq(int distance) {
+    return delegee.sloppyFreq(distance);
+  }
+    
+  @Override
+  public float idf(int docFreq, int numDocs) {
+    return delegee.idf(docFreq, numDocs);
+  }
+    
+  @Override
+  public float coord(int overlap, int maxOverlap) {
+    return delegee.coord(overlap, maxOverlap);
+  }
+
+  @Override
+  public float scorePayload(int docId, String fieldName, int start, int end, byte [] payload, int offset, int length) {
+    return delegee.scorePayload(docId, fieldName, start, end, payload, offset, length);
+  }
+}