/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2008, 2013, Red Hat Inc. or third-party contributors as
* indicated by the @author tags or express copyright attribution
* statements applied by the authors. All third-party contributions are
* distributed under license by Red Hat Inc.
*
* This copyrighted material is made available to anyone wishing to use, modify,
* copy, or redistribute it subject to the terms and conditions of the GNU
* Lesser General Public License, as published by the Free Software Foundation.
*
* This program 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 this distribution; if not, write to:
* Free Software Foundation, Inc.
* 51 Franklin Street, Fifth Floor
* Boston, MA 02110-1301 USA
*/
package org.hibernate.envers.internal.entities.mapper.id;
import java.util.Iterator;
import java.util.List;
import org.hibernate.envers.internal.tools.query.Parameters;
/**
* @author Adam Warski (adam at warski dot org)
*/
public abstract class AbstractIdMapper implements IdMapper {
private Parameters getParametersToUse(Parameters parameters, List<QueryParameterData> paramDatas) {
if ( paramDatas.size() > 1 ) {
return parameters.addSubParameters( "and" );
}
else {
return parameters;
}
}
@Override
public void addIdsEqualToQuery(Parameters parameters, String prefix1, String prefix2) {
final List<QueryParameterData> paramDatas = mapToQueryParametersFromId( null );
final Parameters parametersToUse = getParametersToUse( parameters, paramDatas );
for ( QueryParameterData paramData : paramDatas ) {
parametersToUse.addWhere(
paramData.getProperty( prefix1 ),
false,
"=",
paramData.getProperty( prefix2 ),
false
);
}
}
@Override
public void addIdsEqualToQuery(Parameters parameters, String prefix1, IdMapper mapper2, String prefix2) {
final List<QueryParameterData> paramDatas1 = mapToQueryParametersFromId( null );
final List<QueryParameterData> paramDatas2 = mapper2.mapToQueryParametersFromId( null );
final Parameters parametersToUse = getParametersToUse( parameters, paramDatas1 );
final Iterator<QueryParameterData> paramDataIter1 = paramDatas1.iterator();
final Iterator<QueryParameterData> paramDataIter2 = paramDatas2.iterator();
while ( paramDataIter1.hasNext() ) {
final QueryParameterData paramData1 = paramDataIter1.next();
final QueryParameterData paramData2 = paramDataIter2.next();
parametersToUse.addWhere(
paramData1.getProperty( prefix1 ),
false,
"=",
paramData2.getProperty( prefix2 ),
false
);
}
}
@Override
public void addIdEqualsToQuery(Parameters parameters, Object id, String prefix, boolean equals) {
final List<QueryParameterData> paramDatas = mapToQueryParametersFromId( id );
final Parameters parametersToUse = getParametersToUse( parameters, paramDatas );
for ( QueryParameterData paramData : paramDatas ) {
if ( paramData.getValue() == null ) {
handleNullValue( parametersToUse, paramData.getProperty( prefix ), equals );
}
else {
parametersToUse.addWhereWithParam(
paramData.getProperty( prefix ),
equals ? "=" : "<>",
paramData.getValue()
);
}
}
}
@Override
public void addNamedIdEqualsToQuery(Parameters parameters, String prefix, boolean equals) {
final List<QueryParameterData> paramDatas = mapToQueryParametersFromId( null );
final Parameters parametersToUse = getParametersToUse( parameters, paramDatas );
for ( QueryParameterData paramData : paramDatas ) {
parametersToUse.addWhereWithNamedParam(
paramData.getProperty( prefix ),
equals ? "=" : "<>",
paramData.getQueryParameterName()
);
}
}
private void handleNullValue(Parameters parameters, String propertyName, boolean equals) {
if ( equals ) {
parameters.addNullRestriction( propertyName, equals );
}
else {
parameters.addNotNullRestriction( propertyName, equals );
}
}
}