org.hibernate.engine.query.spi.sql.NativeSQLQueryRootReturn Maven / Gradle / Ivy
/*
* 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.engine.query.spi.sql;
import java.util.Map;
import org.hibernate.LockMode;
/**
* Represents a return defined as part of a native sql query which
* names a "root" entity. A root entity means it is explicitly a
* "column" in the result, as opposed to a fetched relationship or role.
*
* @author Steve Ebersole
*/
public class NativeSQLQueryRootReturn extends NativeSQLQueryNonScalarReturn {
private final String returnEntityName;
private final int hashCode;
/**
* Construct a return representing an entity returned at the root
* of the result.
*
* @param alias The result alias
* @param entityName The entity name.
* @param lockMode The lock mode to apply
*/
public NativeSQLQueryRootReturn(String alias, String entityName, LockMode lockMode) {
this( alias, entityName, null, lockMode );
}
/**
*
* @param alias The result alias
* @param entityName The entity name.
* @param propertyResults Any user-supplied column->property mappings
* @param lockMode The lock mode to apply
*/
public NativeSQLQueryRootReturn(String alias, String entityName, Map propertyResults, LockMode lockMode) {
super( alias, propertyResults, lockMode );
this.returnEntityName = entityName;
this.hashCode = determineHashCode();
}
private int determineHashCode() {
int result = super.hashCode();
result = 31 * result + ( returnEntityName != null ? returnEntityName.hashCode() : 0 );
return result;
}
/**
* The name of the entity to be returned.
*
* @return The entity name
*/
public String getReturnEntityName() {
return returnEntityName;
}
@Override
@SuppressWarnings("RedundantIfStatement")
public boolean equals(Object o) {
if ( this == o ) {
return true;
}
if ( o == null || getClass() != o.getClass() ) {
return false;
}
if ( ! super.equals( o ) ) {
return false;
}
final NativeSQLQueryRootReturn that = (NativeSQLQueryRootReturn) o;
if ( returnEntityName != null ? !returnEntityName.equals( that.returnEntityName ) : that.returnEntityName != null ) {
return false;
}
return true;
}
@Override
public int hashCode() {
return hashCode;
}
}