// $Id: ErrorCounter.java 9242 2006-02-09 12:37:36Z steveebersole $
package org.hibernate.hql.ast;
import antlr.RecognitionException;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.hibernate.QueryException;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
/**
* An error handler that counts parsing errors and warnings.
*/
public class ErrorCounter implements ParseErrorHandler {
private Log log = LogFactory.getLog( ErrorCounter.class );
private Log hqlLog = LogFactory.getLog( "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, 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" );
}
}
}
}
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