/**
* Copyright 2014 National University of Ireland, Galway.
*
* This file is part of the SIREn project. Project and contact information:
*
* https://github.com/rdelbru/SIREn
*
* Licensed 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.
*/
/**
* Create a {@link org.apache.lucene.search.Query} object
* from the processed {@link org.apache.lucene.queryparser.flexible.core.nodes.QueryNode} tree
* using a bottom-up approach.
*
* Each {@link org.apache.lucene.queryparser.flexible.core.nodes.QueryNode} of the query tree
* is mapped to a {@link org.sindice.siren.qparser.keyword.builders.KeywordQueryBuilder}.
* Most builders create a {@link org.sindice.siren.search.node.NodeQuery} object.
* In case the {@link org.sindice.siren.qparser.keyword.config.KeywordQueryConfigHandler.KeywordConfigurationKeys#ALLOW_TWIG}
* is <code>true</code>, every {@link org.sindice.siren.search.node.NodeQuery} is wrapped
* into a {@link org.sindice.siren.search.node.LuceneProxyNodeQuery}; otherwise, a pure
* {@link org.sindice.siren.search.node.NodeQuery} object is created from the
* query tree build.
*
*/
package org.sindice.siren.qparser.keyword.builders;