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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.apache.org/licenses/LICENSE-2.0
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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package org.apache.solr.search;
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import org.apache.lucene.search.Filter;
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import org.apache.lucene.search.Searcher;
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import org.apache.lucene.search.DocIdSet;
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import org.apache.lucene.index.IndexReader;
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import java.io.IOException;
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/** A SolrFilter extends the Lucene Filter and adds extra semantics such as passing on
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* weight context info for function queries.
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* Experimental and subject to change.
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public abstract class SolrFilter extends Filter {
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/** Implementations should propagate createWeight to sub-ValueSources which can store weight info in the context.
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* The context object will be passed to getDocIdSet() where this info can be retrieved. */
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public abstract void createWeight(Map context, Searcher searcher) throws IOException;
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public abstract DocIdSet getDocIdSet(Map context, IndexReader reader) throws IOException;
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public DocIdSet getDocIdSet(IndexReader reader) throws IOException {
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return getDocIdSet(null, reader);