Examples of org.hibernate.hql.ast.HqlParser

org.hibernate.hql.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)

  /**
   * Test a simple tree, make sure the iterator encounters every node.
   */
  public void testSimpleTree() throws Exception {
    String input = "select foo from foo in class org.hibernate.test.Foo, fee in class org.hibernate.test.Fee where foo.dependent = fee order by foo.string desc, foo.component.count asc, fee.id";
    HqlParser parser = HqlParser.getInstance( input );
    parser.statement();
    AST ast = parser.getAST();
    ASTPrinter printer = new ASTPrinter( HqlTokenTypes.class );
    printer.showAst( ast, new PrintWriter( System.out ) );
    ASTIterator iterator = new ASTIterator( ast );
    int count = 0;
    while ( iterator.hasNext() ) {

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  private AST parse(String input, boolean logging) throws RecognitionException, TokenStreamException {
    if ( logging ) {
      System.out.println( "input: ->" + input + "<-" );
    }


    HqlParser parser = HqlParser.getInstance( input );
    parser.setFilter( false );
    parser.statement();
    AST ast = parser.getAST();


    if ( logging ) {
      System.out.println( "AST  :  " + ast.toStringTree() + "" );
      ByteArrayOutputStream baos = new ByteArrayOutputStream();
      parser.showAst( ast, new PrintStream( baos ) );
      System.out.println( baos.toString() );
    }


    assertEquals( "At least one error occurred during parsing!", 0, parser.getParseErrorHandler().getErrorCount() );


    return ast;
  }

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  private AST parse(String input, boolean logging) throws RecognitionException, TokenStreamException {
    if ( logging ) {
      System.out.println( "input: ->" + input + "<-" );
    }


    HqlParser parser = HqlParser.getInstance( input );
    parser.setFilter( false );
    parser.statement();
    AST ast = parser.getAST();


    if ( logging ) {
      System.out.println( "AST  :  " + ast.toStringTree() + "" );
      ByteArrayOutputStream baos = new ByteArrayOutputStream();
      parser.showAst( ast, new PrintStream( baos ) );
      System.out.println( baos.toString() );
    }


    assertEquals( "At least one error occurred during parsing!", 0, parser.getParseErrorHandler().getErrorCount() );


    return ast;
  }

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    parseFilter( "where this.name = ?" );
  }


  public void testNoFrom() throws Exception {
    System.out.println( "***** This test ensures that an error is detected ERROR MESSAGES ARE OKAY!  *****" );
    HqlParser parser = HqlParser.getInstance( "" );
    parser.setFilter( false );
    parser.statement();
    assertEquals( "Parser allowed no FROM clause!", 1, parser.getParseErrorHandler().getErrorCount() );
    System.out.println( "***** END OF ERROR TEST  *****" );
  }

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    doParse( input, false );
  }


  private AST doParse(String input, boolean filter) throws RecognitionException, TokenStreamException {
    System.out.println( "input: ->" + ASTPrinter.escapeMultibyteChars(input) + "<-" );
    HqlParser parser = HqlParser.getInstance( input );
    parser.setFilter( filter );
    parser.statement();
    AST ast = parser.getAST();
    System.out.println( "AST  :  " + ast.toStringTree() + "" );
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    parser.showAst( ast, new PrintStream( baos ) );
    System.out.println( baos.toString() );
    assertEquals( "At least one error occurred during parsing!", 0, parser.getParseErrorHandler().getErrorCount() );
    return ast;
  }

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  /**
   * Test a simple tree, make sure the iterator encounters every node.
   */
  public void testSimpleTree() throws Exception {
    String input = "select foo from foo in class org.hibernate.test.Foo, fee in class org.hibernate.test.Fee where foo.dependent = fee order by foo.string desc, foo.component.count asc, fee.id";
    HqlParser parser = HqlParser.getInstance( input );
    parser.statement();
    AST ast = parser.getAST();
    ASTPrinter printer = new ASTPrinter( HqlTokenTypes.class );
    printer.showAst( ast, new PrintWriter( System.out ) );
    ASTIterator iterator = new ASTIterator( ast );
    int count = 0;
    while ( iterator.hasNext() ) {

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    parseFilter( "where this.name = ?" );
  }


  public void testNoFrom() throws Exception {
    System.out.println( "***** This test ensures that an error is detected ERROR MESSAGES ARE OKAY!  *****" );
    HqlParser parser = HqlParser.getInstance( "" );
    parser.setFilter( false );
    parser.statement();
    assertEquals( "Parser allowed no FROM clause!", 1, parser.getParseErrorHandler().getErrorCount() );
    System.out.println( "***** END OF ERROR TEST  *****" );
  }

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    doParse( input, false );
  }


  private AST doParse(String input, boolean filter) throws RecognitionException, TokenStreamException {
    System.out.println( "input: ->" + ASTPrinter.escapeMultibyteChars(input) + "<-" );
    HqlParser parser = HqlParser.getInstance( input );
    parser.setFilter( filter );
    parser.statement();
    AST ast = parser.getAST();
    System.out.println( "AST  :  " + ast.toStringTree() + "" );
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    parser.showAst( ast, new PrintStream( baos ) );
    System.out.println( baos.toString() );
    assertEquals( "At least one error occurred during parsing!", 0, parser.getParseErrorHandler().getErrorCount() );
    return ast;
  }

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  private AST parse(String input, boolean logging) throws RecognitionException, TokenStreamException {
    if ( logging ) {
      System.out.println( "input: ->" + input + "<-" );
    }


    HqlParser parser = HqlParser.getInstance( input );
    parser.setFilter( false );
    parser.statement();
    AST ast = parser.getAST();


    if ( logging ) {
      System.out.println( "AST  :  " + ast.toStringTree() + "" );
      ByteArrayOutputStream baos = new ByteArrayOutputStream();
      parser.showAst( ast, new PrintStream( baos ) );
      System.out.println( baos.toString() );
    }


    assertEquals( "At least one error occurred during parsing!", 0, parser.getParseErrorHandler().getErrorCount() );


    return ast;
  }

View Full Code Here

  /**
   * Test a simple tree, make sure the iterator encounters every node.
   */
  public void testSimpleTree() throws Exception {
    String input = "select foo from foo in class org.hibernate.test.Foo, fee in class org.hibernate.test.Fee where foo.dependent = fee order by foo.string desc, foo.component.count asc, fee.id";
    HqlParser parser = HqlParser.getInstance( input );
    parser.statement();
    AST ast = parser.getAST();
    ASTPrinter printer = new ASTPrinter( HqlTokenTypes.class );
    printer.showAst( ast, new PrintWriter( System.out ) );
    ASTIterator iterator = new ASTIterator( ast );
    int count = 0;
    while ( iterator.hasNext() ) {

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