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evolvedbinary / elemental / 982

29 Apr 2025 08:34PM UTC coverage: 56.409% (+0.007%) from 56.402%
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67.35
/extensions/indexes/lucene/src/main/java/org/exist/indexing/lucene/FieldType.java
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/*
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 * Elemental
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 * Copyright (C) 2024, Evolved Binary Ltd
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 *
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 * admin@evolvedbinary.com
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 * https://www.evolvedbinary.com | https://www.elemental.xyz
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 *
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 * Use of this software is governed by the Business Source License 1.1
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 * included in the LICENSE file and at www.mariadb.com/bsl11.
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 *
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 * Change Date: 2028-04-27
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 *
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 * On the date above, in accordance with the Business Source License, use
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 * of this software will be governed by the Apache License, Version 2.0.
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 *
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 * Additional Use Grant: Production use of the Licensed Work for a permitted
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 * purpose. A Permitted Purpose is any purpose other than a Competing Use.
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 * A Competing Use means making the Software available to others in a commercial
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 * product or service that: substitutes for the Software; substitutes for any
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 * other product or service we offer using the Software that exists as of the
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 * date we make the Software available; or offers the same or substantially
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 * similar functionality as the Software.
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 *
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 * NOTE: Parts of this file contain code from 'The eXist-db Authors'.
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 *       The original license header is included below.
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 *
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 * =====================================================================
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 *
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 * eXist-db Open Source Native XML Database
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 * Copyright (C) 2001 The eXist-db Authors
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 *
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 * info@exist-db.org
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 * http://www.exist-db.org
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 *
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 * This library is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Lesser General Public
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 * License as published by the Free Software Foundation; either
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 * version 2.1 of the License, or (at your option) any later version.
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 *
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 * This library is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with this library; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
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 */
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package org.exist.indexing.lucene;
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import org.apache.lucene.analysis.Analyzer;
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import org.apache.lucene.document.Field;
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import org.exist.indexing.lucene.analyzers.MetaAnalyzer;
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import org.exist.util.DatabaseConfigurationException;
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import org.w3c.dom.Element;
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/**
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 * Configures a field type: analyzers etc. used for indexing
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 * a field.
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 * 
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 * @author wolf
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 *
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 */
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public class FieldType {
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        private final static String ID_ATTR = "id";
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        private final static String ANALYZER_ID_ATTR = "analyzer";
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        private final static String BOOST_ATTRIB = "boost";
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        private final static String STORE_ATTRIB = "store";
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        private String id = null;
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        private String analyzerId = null;
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    // save Analyzer for later use in LuceneMatchListener
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    private final MetaAnalyzer analyzer;
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        private float boost = -1;
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        private Field.Store store = null;
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    public FieldType(Element config, AnalyzerConfig analyzers) throws DatabaseConfigurationException {
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            if (LuceneConfig.FIELD_TYPE_ELEMENT.equals(config.getLocalName())) {
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                    id = config.getAttribute(ID_ATTR).trim();
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            if (id.isEmpty())
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                            throw new DatabaseConfigurationException("fieldType needs an attribute 'id'");
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            }
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            String aId = config.getAttribute(ANALYZER_ID_ATTR).trim();
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            // save Analyzer for later use in LuceneMatchListener
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        if (!aId.isEmpty()) {
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                final Analyzer configuredAnalyzer = analyzers.getAnalyzerById(aId);
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            if (configuredAnalyzer == null)
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                throw new DatabaseConfigurationException("No analyzer configured for id " + aId);
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            analyzerId = aId;
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            analyzer = new MetaAnalyzer(configuredAnalyzer);
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        } else {
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                analyzer = new MetaAnalyzer(analyzers.getDefaultAnalyzer());
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        }
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        String boostAttr = config.getAttribute(BOOST_ATTRIB).trim();
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        if (!boostAttr.isEmpty()) {
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            try {
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                boost = Float.parseFloat(boostAttr);
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            } catch (NumberFormatException e) {
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                throw new DatabaseConfigurationException("Invalid value for attribute 'boost'. Expected float, " +
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                        "got: " + boostAttr);
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            }
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        }
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        String storeAttr = config.getAttribute(STORE_ATTRIB).trim();
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        if (!storeAttr.isEmpty()) {
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                store = storeAttr.equalsIgnoreCase("yes") ? Field.Store.YES : Field.Store.NO;
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        }
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    }
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    public String getId() {
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                return id;
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        }
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        public String getAnalyzerId() {
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                return analyzerId;
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        }
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        public Analyzer getAnalyzer() {
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                return analyzer;
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        }
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        public void addAnalzer(String fieldName, Analyzer analyzer) {
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                this.analyzer.addAnalyzer(fieldName, analyzer);
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        }
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        public float getBoost() {
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                return boost;
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        }
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        public Field.Store getStore() {
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                return store;
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        }
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}
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