pylucene 3.5.0-3

[pylucene.git] / lucene-java-3.5.0 / lucene / contrib / facet / src / java / org / apache / lucene / facet / search / params / association / AssociationIntSumFacetRequest.java

diff --git a/lucene-java-3.5.0/lucene/contrib/facet/src/java/org/apache/lucene/facet/search/params/association/AssociationIntSumFacetRequest.java b/lucene-java-3.5.0/lucene/contrib/facet/src/java/org/apache/lucene/facet/search/params/association/AssociationIntSumFacetRequest.java
new file mode 100644 (file)
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+package org.apache.lucene.facet.search.params.association;
+
+import java.io.IOException;
+
+import org.apache.lucene.index.IndexReader;
+
+import org.apache.lucene.facet.search.FacetArrays;
+import org.apache.lucene.facet.search.aggregator.Aggregator;
+import org.apache.lucene.facet.search.aggregator.association.AssociationIntSumAggregator;
+import org.apache.lucene.facet.search.params.FacetRequest;
+import org.apache.lucene.facet.taxonomy.CategoryPath;
+import org.apache.lucene.facet.taxonomy.TaxonomyReader;
+
+/**
+ * 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.
+ */
+
+/**
+ * Facet request for weighting facets according to their integer association by
+ * summing the association values.
+ * 
+ * @lucene.experimental
+ */
+public class AssociationIntSumFacetRequest extends FacetRequest {
+
+  /**
+   * Create an integer association facet request for a given node in the
+   * taxonomy.
+   */
+  public AssociationIntSumFacetRequest(CategoryPath path, int num) {
+    super(path, num);
+  }
+
+  @Override
+  public Aggregator createAggregator(boolean useComplements,
+                                      FacetArrays arrays, IndexReader reader,
+                                      TaxonomyReader taxonomy) throws IOException {
+    assert !useComplements : "complements are not supported by this FacetRequest";
+    return new AssociationIntSumAggregator(reader, arrays.getIntArray());
+  }
+
+  @Override
+  public double getValueOf(FacetArrays arrays, int ordinal) {
+    return arrays.getIntArray()[ordinal];
+  }
+
+  @Override
+  public boolean supportsComplements() {
+    return false;
+  }
+  
+  @Override
+  public boolean requireDocumentScore() {
+    return false;
+  }
+  
+}