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/*
* 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.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 ErrorTracker implements ParseErrorHandler {
private static final CoreMessageLogger LOG = Logger.getMessageLogger(
CoreMessageLogger.class,
ErrorTracker.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).
*/
@SuppressWarnings("WeakerAccess")
public ErrorTracker() {
this( null );
}
/**
* Constructs an ErrorCounter with knowledge of the HQL, meaning that generated QueryException
* instances *will* contain the HQL.
*/
@SuppressWarnings("WeakerAccess")
public ErrorTracker(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" );
}
}