org.hibernate.criterion.InExpression Maven / Gradle / Ivy
/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2010, 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.criterion;
import java.util.ArrayList;
import org.hibernate.Criteria;
import org.hibernate.EntityMode;
import org.hibernate.engine.spi.TypedValue;
import org.hibernate.internal.util.StringHelper;
import org.hibernate.type.CompositeType;
import org.hibernate.type.Type;
/**
* Constrains the property to a specified list of values
*
* @author Gavin King
*/
public class InExpression implements Criterion {
private final String propertyName;
private final Object[] values;
/**
* Constructs an InExpression
*
* @param propertyName The property name to check
* @param values The values to check against
*
* @see Restrictions#in(String, java.util.Collection)
* @see Restrictions#in(String, Object[])
*/
protected InExpression(String propertyName, Object[] values) {
this.propertyName = propertyName;
this.values = values;
}
@Override
public String toSqlString( Criteria criteria, CriteriaQuery criteriaQuery ) {
final String[] columns = criteriaQuery.findColumns( propertyName, criteria );
if ( criteriaQuery.getFactory().getDialect().supportsRowValueConstructorSyntaxInInList() || columns.length <= 1 ) {
String singleValueParam = StringHelper.repeat( "?, ", columns.length - 1 ) + "?";
if ( columns.length > 1 ) {
singleValueParam = '(' + singleValueParam + ')';
}
final String params = values.length > 0
? StringHelper.repeat( singleValueParam + ", ", values.length - 1 ) + singleValueParam
: "";
String cols = StringHelper.join( ", ", columns );
if ( columns.length > 1 ) {
cols = '(' + cols + ')';
}
return cols + " in (" + params + ')';
}
else {
String cols = " ( " + StringHelper.join( " = ? and ", columns ) + "= ? ) ";
cols = values.length > 0
? StringHelper.repeat( cols + "or ", values.length - 1 ) + cols
: "";
cols = " ( " + cols + " ) ";
return cols;
}
}
@Override
public TypedValue[] getTypedValues(Criteria criteria, CriteriaQuery criteriaQuery) {
final ArrayList list = new ArrayList();
final Type type = criteriaQuery.getTypeUsingProjection( criteria, propertyName );
if ( type.isComponentType() ) {
final CompositeType compositeType = (CompositeType) type;
final Type[] subTypes = compositeType.getSubtypes();
for ( Object value : values ) {
for ( int i = 0; i < subTypes.length; i++ ) {
final Object subValue = value == null
? null
: compositeType.getPropertyValues( value, EntityMode.POJO )[i];
list.add( new TypedValue( subTypes[i], subValue ) );
}
}
}
else {
for ( Object value : values ) {
list.add( new TypedValue( type, value ) );
}
}
return list.toArray( new TypedValue[ list.size() ] );
}
@Override
public String toString() {
return propertyName + " in (" + StringHelper.toString( values ) + ')';
}
}