/*
 * Copyright (C) 2005-2010 Alfresco Software Limited.
 *
 * This file is part of Alfresco
 *
 * Alfresco is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Alfresco is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with Alfresco. If not, see <http://www.gnu.org/licenses/>.
 */
package org.alfresco.cmis.mapping;

import java.io.Serializable;

import org.alfresco.cmis.CMISDictionaryModel;
import org.alfresco.repo.search.adaptor.lucene.AnalysisMode;
import org.alfresco.repo.search.adaptor.lucene.LuceneFunction;
import org.alfresco.repo.search.adaptor.lucene.LuceneQueryParserAdaptor;
import org.alfresco.repo.search.impl.querymodel.PredicateMode;
import org.alfresco.service.ServiceRegistry;
import org.alfresco.service.cmr.dictionary.DataTypeDefinition;
import org.alfresco.service.cmr.repository.ChildAssociationRef;
import org.alfresco.service.cmr.repository.NodeRef;
import org.alfresco.service.cmr.repository.datatype.DefaultTypeConverter;

/**
 * Get the CMIS parent property
 * 
 * @author andyh
 *
 */
public class ParentProperty extends AbstractProperty
{
    /**
     * Construct
     * 
     * @param serviceRegistry
     */
    public ParentProperty(ServiceRegistry serviceRegistry)
    {
        super(serviceRegistry, CMISDictionaryModel.PROP_PARENT_ID);
    }

    /*
     * (non-Javadoc)
     * @see org.alfresco.cmis.property.PropertyAccessor#getValue(org.alfresco.service.cmr.repository.NodeRef)
     */
    public Serializable getValue(NodeRef nodeRef)
    {
        if (nodeRef.equals(getServiceRegistry().getCMISService().getDefaultRootNodeRef()))
        {
            return null;
        }
        
        ChildAssociationRef car = getServiceRegistry().getNodeService().getPrimaryParent(nodeRef);
        if ((car != null) && (car.getParentRef() != null))
        {
            return car.getParentRef().toString();
        }
        else
        {
            return null;
        }
    }

    public String getLuceneFieldName()
    {
        return "PARENT";
    }

    private String getValueAsString(Serializable value)
    {
        Object converted = DefaultTypeConverter.INSTANCE.convert(getServiceRegistry().getDictionaryService().getDataType(DataTypeDefinition.NODE_REF), value);
        String asString = DefaultTypeConverter.INSTANCE.convert(String.class, converted);
        return asString;
    }
    
    /*
     * (non-Javadoc)
     * @see org.alfresco.cmis.property.PropertyLuceneBuilder#buildLuceneEquality(org.alfresco.repo.search.impl.lucene.LuceneQueryParser, java.io.Serializable, org.alfresco.repo.search.impl.querymodel.PredicateMode)
     */
    public <Q, S, E extends Throwable> Q buildLuceneEquality(LuceneQueryParserAdaptor<Q, S, E> lqpa, Serializable value, PredicateMode mode, LuceneFunction luceneFunction) throws E
    {
        String field = getLuceneFieldName();
        String stringValue = getValueAsString(value);
        return lqpa.getFieldQuery(field, stringValue, AnalysisMode.IDENTIFIER, luceneFunction);
    }

    /*
     * (non-Javadoc)
     * @see org.alfresco.cmis.property.PropertyLuceneBuilder#buildLuceneExists(org.alfresco.repo.search.impl.lucene.LuceneQueryParser, java.lang.Boolean)
     */
    public <Q, S, E extends Throwable> Q buildLuceneExists(LuceneQueryParserAdaptor<Q, S, E> lqpa, Boolean not) throws E
    {
        if (not)
        {
            return lqpa.getFieldQuery("ISROOT", "T", AnalysisMode.IDENTIFIER, LuceneFunction.FIELD);
        } else
        {
            return lqpa.getNegatedQuery(lqpa.getFieldQuery("ISROOT", "T", AnalysisMode.IDENTIFIER, LuceneFunction.FIELD));
        }
    }

    /*
     * (non-Javadoc)
     * @see org.alfresco.cmis.property.PropertyLuceneBuilder#buildLuceneLike(org.alfresco.repo.search.impl.lucene.LuceneQueryParser, java.io.Serializable, java.lang.Boolean)
     */
    public <Q, S, E extends Throwable> Q buildLuceneLike(LuceneQueryParserAdaptor<Q, S, E> lqpa, Serializable value, Boolean not) throws E
    {
        String field = getLuceneFieldName();
        String stringValue = getValueAsString(value);
        
        Q q = lqpa.getLikeQuery(field, stringValue, AnalysisMode.IDENTIFIER);
        if (not)
        {
            q = lqpa.getNegatedQuery(q);
        }
        return q;
    }

    /*
     * (non-Javadoc)
     * @see org.alfresco.cmis.property.PropertyLuceneBuilder#getLuceneSortField()
     */
    public <Q, S, E extends Throwable> String getLuceneSortField(LuceneQueryParserAdaptor<Q, S, E> lqpa)
    {
        return getLuceneFieldName();
    }
}