pylucene 3.5.0-3

[pylucene.git] / lucene-java-3.5.0 / lucene / backwards / src / test-framework / org / apache / lucene / search / AssertingIndexSearcher.java

diff --git a/lucene-java-3.5.0/lucene/backwards/src/test-framework/org/apache/lucene/search/AssertingIndexSearcher.java b/lucene-java-3.5.0/lucene/backwards/src/test-framework/org/apache/lucene/search/AssertingIndexSearcher.java
new file mode 100644 (file)
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+++ b/lucene-java-3.5.0/lucene/backwards/src/test-framework/org/apache/lucene/search/AssertingIndexSearcher.java
@@ -0,0 +1,89 @@
+package org.apache.lucene.search;
+
+/**
+ * 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.util.concurrent.ExecutorService;
+import java.io.IOException;
+
+import org.apache.lucene.index.IndexReader;
+
+/** 
+ * Helper class that adds some extra checks to ensure correct
+ * usage of {@code IndexSearcher} and {@code Weight}.
+ * TODO: Extend this by more checks, that's just a start.
+ */
+public class AssertingIndexSearcher extends IndexSearcher {
+  public  AssertingIndexSearcher(IndexReader r) {
+    super(r);
+  }
+  
+  public  AssertingIndexSearcher(IndexReader r, ExecutorService ex) {
+    super(r, ex);
+  }
+  
+  // not anonymous because else not serializable (compare trunk)
+  private static final class UnmodifiableWeight extends Weight {
+    private final Weight w;
+    
+    UnmodifiableWeight(Weight w) {
+      this.w = w;
+    }
+  
+    @Override
+    public Explanation explain(IndexReader reader, int doc) throws IOException {
+      return w.explain(reader, doc);
+    }
+
+    @Override
+    public Query getQuery() {
+      return w.getQuery();
+    }
+
+    @Override
+    public float getValue() {
+      return w.getValue();
+    }
+
+    @Override
+    public void normalize(float norm) {
+      throw new IllegalStateException("Weight already normalized.");
+    }
+
+    @Override
+    public Scorer scorer(IndexReader reader, boolean scoreDocsInOrder, boolean topScorer) throws IOException {
+      return w.scorer(reader, scoreDocsInOrder, topScorer);
+    }
+
+    @Override
+    public float sumOfSquaredWeights() throws IOException {
+      throw new IllegalStateException("Weight already normalized.");
+    }
+
+    @Override
+    public boolean scoresDocsOutOfOrder() {
+      return w.scoresDocsOutOfOrder();
+    }
+  }
+  
+  /** Ensures, that the returned {@code Weight} is not normalized again, which may produce wrong scores. */
+  @Override
+  public Weight createNormalizedWeight(Query query) throws IOException {
+    final Weight w = super.createNormalizedWeight(query);
+    return new UnmodifiableWeight(w);
+  }
+}