Examples of org.hibernate.hql.internal.ast.HqlParser

org.hibernate.hql.internal.ast.HqlParser
Implements the semantic action methods defined in the HQL base parser to keep the grammar source file a little cleaner. Extends the parser class generated by ANTLR. @author Joshua Davis (pgmjsd@sourceforge.net)


  public TypedQueryFactoryGenerator(EntityManager em, NamedQuery namedQuery) {
    this.jpaQuery = Assert.notNull(namedQuery.query());


    try {
      HqlParser parser = HqlParser.getInstance(jpaQuery);
      parser.statement();
      AST hqlAst = parser.getAST();


      if (logger.isDebugEnabled()) {
        logger.debug("First-level parse tree for " + namedQuery.name() + ":");
        parser.showAst(hqlAst, System.out);
      }


      SessionImplementor hibernateSession = em.unwrap(SessionImplementor.class);
      ASTQueryTranslatorFactory translatorFactory = new ASTQueryTranslatorFactory();
      query = (QueryTranslatorImpl) translatorFactory.createQueryTranslator(

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    if ( replacements == null ) {
      replacements = Collections.emptyMap();
    }


    // PHASE 1 : Parse the HQL into an AST.
    final HqlParser parser = parse( true );


    // PHASE 2 : Analyze the HQL AST, and produce an SQL AST.
    final HqlSqlWalker w = analyze( parser, replacements, collectionRole );


    return w.getSelectClause();

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    return w;
  }


  private HqlParser parse(boolean filter) throws TokenStreamException, RecognitionException {
    // Parse the query string into an HQL AST.
    final HqlParser parser = HqlParser.getInstance( query );
    parser.setFilter( filter );


    parser.statement();


    final AST hqlAst = parser.getAST();


    final NodeTraverser walker = new NodeTraverser( new JavaConstantConverter() );
    walker.traverseDepthFirst( hqlAst );


    parser.getParseErrorHandler().throwQueryException();
    return parser;
  }

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