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package org.apache.lucene.queryParser.spans;
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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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import org.apache.lucene.queryParser.core.QueryNodeException;
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import org.apache.lucene.queryParser.core.builders.QueryTreeBuilder;
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import org.apache.lucene.queryParser.core.nodes.BooleanQueryNode;
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import org.apache.lucene.queryParser.core.nodes.FieldQueryNode;
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import org.apache.lucene.queryParser.core.nodes.QueryNode;
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import org.apache.lucene.queryParser.standard.builders.StandardQueryBuilder;
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import org.apache.lucene.search.spans.SpanQuery;
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* Sets up a query tree builder to build a span query tree from a query node
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* The defined map is:<br/>
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* - every BooleanQueryNode instance is delegated to the SpanOrQueryNodeBuilder<br/>
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* - every FieldQueryNode instance is delegated to the SpanTermQueryNodeBuilder <br/>
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public class SpansQueryTreeBuilder extends QueryTreeBuilder implements
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StandardQueryBuilder {
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public SpansQueryTreeBuilder() {
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setBuilder(BooleanQueryNode.class, new SpanOrQueryNodeBuilder());
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setBuilder(FieldQueryNode.class, new SpanTermQueryNodeBuilder());
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public SpanQuery build(QueryNode queryTree) throws QueryNodeException {
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return (SpanQuery) super.build(queryTree);