org.hibernate.engine.jdbc.dialect.internal.DialectResolverSet Maven / Gradle / Ivy
/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* License: GNU Lesser General Public License (LGPL), version 2.1 or later.
* See the lgpl.txt file in the root directory or .
*/
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 resolvers;
public DialectResolverSet() {
this( new ArrayList() );
}
public DialectResolverSet(List 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 );
}
}