/*
* 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.engine.jdbc.dialect.internal;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import org.hibernate.dialect.Dialect;
import org.hibernate.engine.jdbc.dialect.spi.DialectResolutionInfo;
import org.hibernate.engine.jdbc.dialect.spi.DialectResolver;
import org.hibernate.exception.JDBCConnectionException;
import org.hibernate.internal.CoreLogging;
import org.hibernate.internal.CoreMessageLogger;
/**
* A {@link DialectResolver} implementation which coordinates resolution by delegating to sub-resolvers.
*
* @author Tomoto Shimizu Washio
* @author Steve Ebersole
*/
public class DialectResolverSet implements DialectResolver {
private static final CoreMessageLogger LOG = CoreLogging.messageLogger( DialectResolverSet.class );
private List<DialectResolver> resolvers;
public DialectResolverSet() {
this( new ArrayList<DialectResolver>() );
}
public DialectResolverSet(List<DialectResolver> resolvers) {
this.resolvers = resolvers;
}
public DialectResolverSet(DialectResolver... resolvers) {
this( Arrays.asList( resolvers ) );
}
@Override
public Dialect resolveDialect(DialectResolutionInfo info) {
for ( DialectResolver resolver : resolvers ) {
try {
final Dialect dialect = resolver.resolveDialect( info );
if ( dialect != null ) {
return dialect;
}
}
catch ( JDBCConnectionException e ) {
throw e;
}
catch ( Exception e ) {
LOG.exceptionInSubResolver( e.getMessage() );
}
}
return null;
}
/**
* Add a resolver at the end of the underlying resolver list. The resolver added by this method is at lower
* priority than any other existing resolvers.
*
* @param resolver The resolver to add.
*/
public void addResolver(DialectResolver resolver) {
resolvers.add( resolver );
}
/**
* Add a resolver at the beginning of the underlying resolver list. The resolver added by this method is at higher
* priority than any other existing resolvers.
*
* @param resolver The resolver to add.
*/
public void addResolverAtFirst(DialectResolver resolver) {
resolvers.add( 0, resolver );
}
}