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package org.apache.lucene.queryParser.surround.query;
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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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/* Create basic queries to be used during rewrite.
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* The basic queries are TermQuery and SpanTermQuery.
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* An exception can be thrown when too many of these are used.
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* SpanTermQuery and TermQuery use IndexReader.termEnum(Term), which causes the buffer usage.
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* Use this class to limit the buffer usage for reading terms from an index.
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* Default is 1024, the same as the max. number of subqueries for a BooleanQuery.
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import org.apache.lucene.index.Term;
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import org.apache.lucene.search.TermQuery;
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import org.apache.lucene.search.spans.SpanTermQuery;
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public class BasicQueryFactory {
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public BasicQueryFactory(int maxBasicQueries) {
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this.maxBasicQueries = maxBasicQueries;
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public BasicQueryFactory() {
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private int maxBasicQueries;
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private int queriesMade;
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public int getNrQueriesMade() {return queriesMade;}
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public int getMaxBasicQueries() {return maxBasicQueries;}
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private synchronized void checkMax() throws TooManyBasicQueries {
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if (queriesMade >= maxBasicQueries)
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throw new TooManyBasicQueries(getMaxBasicQueries());
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public TermQuery newTermQuery(Term term) throws TooManyBasicQueries {
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return new TermQuery(term);
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public SpanTermQuery newSpanTermQuery(Term term) throws TooManyBasicQueries {
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return new SpanTermQuery(term);