org.hibernate.hql.internal.ast.ErrorCounter Maven / Gradle / Ivy
/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2008, Red Hat Middleware LLC 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 Middleware LLC.
*
* 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.hql.internal.ast;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import org.hibernate.QueryException;
import org.hibernate.internal.CoreMessageLogger;
import org.jboss.logging.Logger;
import antlr.RecognitionException;
/**
* An error handler that counts parsing errors and warnings.
*/
public class ErrorCounter implements ParseErrorHandler {
private static final CoreMessageLogger LOG = Logger.getMessageLogger(
CoreMessageLogger.class,
ErrorCounter.class.getName()
);
private final String hql;
private List errorList = new ArrayList();
private List recognitionExceptions = new ArrayList();
/**
* Constructs an ErrorCounter without knowledge of the HQL, meaning that generated QueryException
* instances *will not* contain the HQL (and will need to be wrapped at a higher level in another
* QueryException).
*/
public ErrorCounter() {
this( null );
}
/**
* Constructs an ErrorCounter with knowledge of the HQL, meaning that generated QueryException
* instances *will* contain the HQL.
*/
public ErrorCounter(String hql) {
this.hql = hql;
}
@Override
public void reportError(RecognitionException e) {
reportError( e.toString() );
recognitionExceptions.add( e );
LOG.error( e.toString(), e );
}
@Override
public void reportError(String message) {
LOG.error( message );
errorList.add( message );
}
@Override
public int getErrorCount() {
return errorList.size();
}
@Override
public void reportWarning(String message) {
LOG.debug( message );
}
private String getErrorString() {
final StringBuilder buf = new StringBuilder();
final Iterator iterator = errorList.iterator();
while ( iterator.hasNext() ) {
buf.append( iterator.next() );
if ( iterator.hasNext() ) {
buf.append( "\n" );
}
}
return buf.toString();
}
@Override
public void throwQueryException() throws QueryException {
if ( getErrorCount() > 0 ) {
if ( recognitionExceptions.size() > 0 ) {
throw QuerySyntaxException.convert( recognitionExceptions.get( 0 ), hql );
}
throw new QueryException( getErrorString(), hql );
}
LOG.debug( "throwQueryException() : no errors" );
}
}