pylucene 3.5.0-3

[pylucene.git] / lucene-java-3.4.0 / lucene / contrib / facet / src / java / org / apache / lucene / facet / search / cache / CategoryListData.java

diff --git a/lucene-java-3.4.0/lucene/contrib/facet/src/java/org/apache/lucene/facet/search/cache/CategoryListData.java b/lucene-java-3.4.0/lucene/contrib/facet/src/java/org/apache/lucene/facet/search/cache/CategoryListData.java
deleted file mode 100644 (file)
index a661077..0000000
--- a/lucene-java-3.4.0/lucene/contrib/facet/src/java/org/apache/lucene/facet/search/cache/CategoryListData.java
+++ /dev/null
@@ -1,135 +0,0 @@
-package org.apache.lucene.facet.search.cache;
-
-import java.io.IOException;
-
-import org.apache.lucene.index.IndexReader;
-
-import org.apache.lucene.facet.index.params.CategoryListParams;
-import org.apache.lucene.facet.index.params.FacetIndexingParams;
-import org.apache.lucene.facet.search.CategoryListIterator;
-import org.apache.lucene.facet.taxonomy.TaxonomyReader;
-import org.apache.lucene.util.collections.IntArray;
-
-/**
- * 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.
- */
-
-/**
- * Category list data maintained in RAM.
- * <p>
- * Speeds up facets accumulation when more RAM is available.
- * <p>
- * Note that this will consume more memory: one int (4 bytes) for each category
- * of each document.
- * <p>
- * Note: at the moment this class is insensitive to updates of the index, and,
- * in particular, does not make use of Lucene's ability to refresh a single
- * segment.
- * <p>
- * See {@link CategoryListCache#register(CategoryListParams, CategoryListData)}
- * and
- * {@link CategoryListCache#loadAndRegister(CategoryListParams, IndexReader, TaxonomyReader, FacetIndexingParams)}.
- * 
- * @lucene.experimental
- */
-public class CategoryListData {
-  
-  // TODO (Facet): experiment with different orders - p-d-c vs. current d-p-c.
-  private transient volatile int[][][] docPartitionCategories;  
-  
-  /**
-   * Empty constructor for extensions with modified computation of the data.
-   */
-  protected CategoryListData() {
-  }
-  
-  /**
-   * Compute category list data for caching for faster iteration.
-   */
-  CategoryListData(IndexReader reader, TaxonomyReader taxo, 
-      FacetIndexingParams iparams, CategoryListParams clp) throws IOException {
-  
-    final int maxDoc = reader.maxDoc();
-    int[][][]dpf  = new int[maxDoc][][];
-    int numPartitions = (int)Math.ceil(taxo.getSize()/(double)iparams.getPartitionSize());
-    IntArray docCategories = new IntArray(); 
-    for (int part=0; part<numPartitions; part++) {
-      CategoryListIterator cli = clp.createCategoryListIterator(reader, part);
-      if (cli.init()) {
-        for (int doc=0; doc<maxDoc; doc++) {
-          if (cli.skipTo(doc)) {
-            docCategories.clear(false);
-            if (dpf[doc]==null) {
-              dpf[doc] = new int[numPartitions][];
-            }
-            long category;
-            while ((category = cli.nextCategory()) <= Integer.MAX_VALUE) {
-              docCategories.addToArray((int)category);
-            }
-            final int size = docCategories.size();
-            dpf[doc][part] = new int[size];
-            for (int i=0; i<size; i++) {
-              dpf[doc][part][i] = docCategories.get(i);
-            }
-          }
-        }
-      }
-    }
-    docPartitionCategories = dpf;
-  }
-  
-  /**
-   * Iterate on the category list data for the specified partition.
-   */
-  public CategoryListIterator iterator(int partition) throws IOException {
-    return new RAMCategoryListIterator(partition, docPartitionCategories);
-  }
-
-  /**
-   * Internal: category list iterator over uncompressed category info in RAM
-   */
-  private static class RAMCategoryListIterator implements CategoryListIterator {
-    private final int part;
-    private final int[][][] dpc;
-    private int currDoc = -1;
-    private int nextCategoryIndex = -1;  
-    
-    RAMCategoryListIterator(int part, int[][][] docPartitionCategories) {
-      this.part = part;
-      dpc = docPartitionCategories;
-    }
-
-    public boolean init() throws IOException {
-      return dpc!=null && dpc.length>part;
-    }
-
-    public long nextCategory() throws IOException {
-      if (nextCategoryIndex >= dpc[currDoc][part].length) {
-        return 1L+Integer.MAX_VALUE;
-      }
-      return dpc[currDoc][part][nextCategoryIndex++]; 
-    }
-
-    public boolean skipTo(int docId) throws IOException {
-      final boolean res = dpc.length>docId && dpc[docId]!=null && dpc[docId][part]!=null;
-      if (res) {
-        currDoc = docId;
-        nextCategoryIndex = 0;
-      }
-      return res;
-    }
-  }
-}
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