/*
* 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.ast;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import org.hibernate.QueryException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import antlr.RecognitionException;
/**
* An error handler that counts parsing errors and warnings.
*/
public class ErrorCounter implements ParseErrorHandler {
private Logger log = LoggerFactory.getLogger( ErrorCounter.class );
private Logger hqlLog = LoggerFactory.getLogger( "org.hibernate.hql.PARSER" );
private List errorList = new ArrayList();
private List warningList = new ArrayList();
private List recognitionExceptions = new ArrayList();
public void reportError(RecognitionException e) {
reportError( e.toString() );
recognitionExceptions.add( e );
if ( log.isDebugEnabled() ) {
log.debug( e.toString(), e );
}
}
public void reportError(String message) {
hqlLog.error( message );
errorList.add( message );
}
public int getErrorCount() {
return errorList.size();
}
public void reportWarning(String message) {
hqlLog.debug( message );
warningList.add( message );
}
private String getErrorString() {
StringBuffer buf = new StringBuffer();
for ( Iterator iterator = errorList.iterator(); iterator.hasNext(); ) {
buf.append( ( String ) iterator.next() );
if ( iterator.hasNext() ) buf.append( "\n" );
}
return buf.toString();
}
public void throwQueryException() throws QueryException {
if ( getErrorCount() > 0 ) {
if ( recognitionExceptions.size() > 0 ) {
throw QuerySyntaxException.convert( ( RecognitionException ) recognitionExceptions.get( 0 ) );
}
else {
throw new QueryException( getErrorString() );
}
}
else {
// all clear
if ( log.isDebugEnabled() ) {
log.debug( "throwQueryException() : no errors" );
}
}
}
}