001/*
002 *  Copyright 2018 Anyware Services
003 *
004 *  Licensed under the Apache License, Version 2.0 (the "License");
005 *  you may not use this file except in compliance with the License.
006 *  You may obtain a copy of the License at
007 *
008 *      http://www.apache.org/licenses/LICENSE-2.0
009 *
010 *  Unless required by applicable law or agreed to in writing, software
011 *  distributed under the License is distributed on an "AS IS" BASIS,
012 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 *  See the License for the specific language governing permissions and
014 *  limitations under the License.
015 */
016package org.ametys.web.frontoffice.search.metamodel.impl;
017
018import java.util.Collection;
019import java.util.Map;
020import java.util.Optional;
021import java.util.stream.Stream;
022
023import org.ametys.cms.contenttype.MetadataType;
024import org.ametys.cms.search.query.DublinCoreQuery;
025import org.ametys.cms.search.query.OrQuery;
026import org.ametys.cms.search.query.Query;
027import org.ametys.cms.search.query.Query.Operator;
028import org.ametys.runtime.i18n.I18nizableText;
029import org.ametys.runtime.parameter.Enumerator;
030import org.ametys.runtime.parameter.StaticEnumerator;
031import org.ametys.web.frontoffice.search.metamodel.SearchCriterionDefinition;
032import org.ametys.web.frontoffice.search.metamodel.Searchable;
033
034/**
035 * {@link SearchCriterionDefinition} for {@link ResourceSearchable} proposing a search criterion on a DublinCore metadata of the resource.
036 */
037public class DublinCoreSearchCriterionDefinition extends AbstractDefaultSearchCriterionDefinition
038{
039    private String _metadataName;
040
041    /**
042     * Default constructor
043     * @param id The id
044     * @param pluginName The plugin name
045     * @param label The label
046     * @param type The type
047     * @param enumeratorEntries The enumerator entries
048     * @param searchable the {@link Searchable}
049     * @param metadataName The DC metadata name
050     */
051    public DublinCoreSearchCriterionDefinition(String id, String pluginName, I18nizableText label, MetadataType type, Optional<Map<String, I18nizableText>> enumeratorEntries, Optional<Searchable> searchable, String metadataName)
052    {
053        super(id, pluginName, label, type, Optional.empty(), Optional.empty(), _getEnumerator(enumeratorEntries), Optional.empty(), Optional.empty(), searchable);
054        _metadataName = metadataName;
055    }
056    
057    private static Optional<Enumerator> _getEnumerator(Optional<Map<String, I18nizableText>> entries)
058    {
059        return entries.map(map ->
060        {
061            StaticEnumerator enumerator = new StaticEnumerator();
062            for (String value : map.keySet())
063            {
064                enumerator.add(map.get(value), value);
065            }
066            return enumerator;
067            
068        });
069    }
070    
071    /**
072     * Potentially retrieve multiple values (as a stream) from an untyped client object
073     * @param value The untyped client object
074     * @return The values
075     */
076    @SuppressWarnings("unchecked")
077    protected Stream<String> _retrieveValues(Object value)
078    {
079        if (value instanceof String[])
080        {
081            return Stream.of((String[]) value);
082        }
083        else if (value instanceof Collection< ? >)
084        {
085            return ((Collection<String>) value).stream();
086        }
087        else if (value instanceof String)
088        {
089            return Stream.of((String) value);
090        }
091        else
092        {
093            throw new IllegalArgumentException("Wrong type for object '" + value + "' : " + value.getClass().getTypeName());
094        }
095    }
096    
097    @Override
098    public Query getQuery(Object value, Operator operator, String language, Map<String, Object> contextualParameters)
099    {
100        return _retrieveValues(value)
101//            .map(ClientUtils::escapeQueryChars)
102            .map(val -> new DublinCoreQuery(_metadataName, val))
103            .collect(OrQuery.collector());
104    }
105}