pylucene 3.5.0-3

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

diff --git a/lucene-java-3.4.0/lucene/src/java/org/apache/lucene/search/DocIdSet.java b/lucene-java-3.4.0/lucene/src/java/org/apache/lucene/search/DocIdSet.java
deleted file mode 100644 (file)
index 03f6c64..0000000
--- a/lucene-java-3.4.0/lucene/src/java/org/apache/lucene/search/DocIdSet.java
+++ /dev/null
@@ -1,67 +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;
-
-/**
- * A DocIdSet contains a set of doc ids. Implementing classes must
- * only implement {@link #iterator} to provide access to the set. 
- */
-public abstract class DocIdSet {
-
-  /** An empty {@code DocIdSet} instance for easy use, e.g. in Filters that hit no documents. */
-  public static final DocIdSet EMPTY_DOCIDSET = new DocIdSet() {
-    
-    private final DocIdSetIterator iterator = new DocIdSetIterator() {
-      @Override
-      public int advance(int target) throws IOException { return NO_MORE_DOCS; }
-      @Override
-      public int docID() { return NO_MORE_DOCS; }
-      @Override
-      public int nextDoc() throws IOException { return NO_MORE_DOCS; }
-    };
-    
-    @Override
-    public DocIdSetIterator iterator() {
-      return iterator;
-    }
-    
-    @Override
-    public boolean isCacheable() {
-      return true;
-    }
-  };
-    
-  /** Provides a {@link DocIdSetIterator} to access the set.
-   * This implementation can return <code>null</code> or
-   * <code>{@linkplain #EMPTY_DOCIDSET}.iterator()</code> if there
-   * are no docs that match. */
-  public abstract DocIdSetIterator iterator() throws IOException;
-
-  /**
-   * This method is a hint for {@link CachingWrapperFilter}, if this <code>DocIdSet</code>
-   * should be cached without copying it into a BitSet. The default is to return
-   * <code>false</code>. If you have an own <code>DocIdSet</code> implementation
-   * that does its iteration very effective and fast without doing disk I/O,
-   * override this method and return <code>true</here>.
-   */
-  public boolean isCacheable() {
-    return false;
-  }
-}