frompathexpressionparser.java

来自「一个Java持久层类库」· Java 代码 · 共 33 行

//$Id: FromPathExpressionParser.java 5861 2005-02-22 14:07:36Z oneovthafew $
package org.hibernate.hql.classic;

import org.hibernate.QueryException;
import org.hibernate.persister.collection.CollectionPropertyNames;
import org.hibernate.type.Type;

public class FromPathExpressionParser extends PathExpressionParser {

	public void end(QueryTranslatorImpl q) throws QueryException {
		if ( !isCollectionValued() ) {
			Type type = getPropertyType();
			if ( type.isEntityType() ) {
				// "finish off" the join
				token( ".", q );
				token( null, q );
			}
			else if ( type.isCollectionType() ) {
				// default to element set if no elements() specified
				token( ".", q );
				token( CollectionPropertyNames.COLLECTION_ELEMENTS, q );
			}
		}
		super.end( q );
	}

	protected void setExpectingCollectionIndex() throws QueryException {
		throw new QueryException( "illegal syntax near collection-valued path expression in from: "  + getCollectionName() );
	}


}