pylucene 3.5.0-3

[pylucene.git] / lucene-java-3.4.0 / lucene / src / java / org / apache / lucene / search / FilteredDocIdSet.java

diff --git a/lucene-java-3.4.0/lucene/src/java/org/apache/lucene/search/FilteredDocIdSet.java b/lucene-java-3.4.0/lucene/src/java/org/apache/lucene/search/FilteredDocIdSet.java
deleted file mode 100644 (file)
index bddd4ee..0000000
--- a/lucene-java-3.4.0/lucene/src/java/org/apache/lucene/search/FilteredDocIdSet.java
+++ /dev/null
@@ -1,79 +0,0 @@
-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.io.IOException;
-
-/**
- * Abstract decorator class for a DocIdSet implementation
- * that provides on-demand filtering/validation
- * mechanism on a given DocIdSet.
- *
- * <p/>
- *
- * Technically, this same functionality could be achieved
- * with ChainedFilter (under contrib/misc), however the
- * benefit of this class is it never materializes the full
- * bitset for the filter.  Instead, the {@link #match}
- * method is invoked on-demand, per docID visited during
- * searching.  If you know few docIDs will be visited, and
- * the logic behind {@link #match} is relatively costly,
- * this may be a better way to filter than ChainedFilter.
- *
- * @see DocIdSet
- */
-
-public abstract class FilteredDocIdSet extends DocIdSet {
-  private final DocIdSet _innerSet;
-  
-  /**
-   * Constructor.
-   * @param innerSet Underlying DocIdSet
-   */
-  public FilteredDocIdSet(DocIdSet innerSet) {
-    _innerSet = innerSet;
-  }
-  
-  /** This DocIdSet implementation is cacheable if the inner set is cacheable. */
-  @Override
-  public boolean isCacheable() {
-    return _innerSet.isCacheable();
-  }
-
-  /**
-   * Validation method to determine whether a docid should be in the result set.
-   * @param docid docid to be tested
-   * @return true if input docid should be in the result set, false otherwise.
-   */
-  protected abstract boolean match(int docid) throws IOException;
-       
-  /**
-   * Implementation of the contract to build a DocIdSetIterator.
-   * @see DocIdSetIterator
-   * @see FilteredDocIdSetIterator
-   */
-  @Override
-  public DocIdSetIterator iterator() throws IOException {
-    return new FilteredDocIdSetIterator(_innerSet.iterator()) {
-      @Override
-      protected boolean match(int docid) throws IOException {
-        return FilteredDocIdSet.this.match(docid);
-      }
-    };
-  }
-}