Package org.apache.drill.common.expression.parser

Examples of org.apache.drill.common.expression.parser.ExprLexer

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      if (expr == null || expr.isEmpty())
        return null;
      try {
        // logger.debug("Parsing expression string '{}'", expr);
        ExprLexer lexer = new ExprLexer(new ANTLRStringStream(expr));
        CommonTokenStream tokens = new CommonTokenStream(lexer);
        ExprParser parser = new ExprParser(tokens);

        //TODO: move functionregistry and error collector to injectables.
        //ctxt.findInjectableValue(valueId, forProperty, beanInstance)
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    throw new UnsupportedOperationException();
  }

  public static void main(String[] args) throws Exception {
    String expr = "if( a == 1) then 4 else 2 end";
    ExprLexer lexer = new ExprLexer(new ANTLRStringStream(expr));
    CommonTokenStream tokens = new CommonTokenStream(lexer);
    ExprParser parser = new ExprParser(tokens);
    LogicalExpression e = parser.parse().e;
    RecordPointer r = new UnbackedRecord();
    r.addField(new SchemaPath("a", ExpressionPosition.UNKNOWN), new IntegerScalar(3));
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  }

  // HELPER METHODS //

  private LogicalExpression parseExpr(String expr) throws RecognitionException {
    ExprLexer lexer = new ExprLexer(new ANTLRStringStream(expr));
    CommonTokenStream tokens = new CommonTokenStream(lexer);
    ExprParser parser = new ExprParser(tokens);
    parser.setRegistry(new FunctionRegistry(DrillConfig.create()));
    parse_return ret = parser.parse();
    return ret.e;
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  }

  // HELPER METHODS //

  private LogicalExpression parseExpr(String expr) throws RecognitionException {
    ExprLexer lexer = new ExprLexer(new ANTLRStringStream(expr));
    CommonTokenStream tokens = new CommonTokenStream(lexer);
    ExprParser parser = new ExprParser(tokens);
    parse_return ret = parser.parse();
    return ret.e;
  }
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    v.addExpr(e2,  g.getRoot());
    System.out.println(g.generate());
  }

  private LogicalExpression getExpr(String expr) throws Exception{
    ExprLexer lexer = new ExprLexer(new ANTLRStringStream(expr));
    CommonTokenStream tokens = new CommonTokenStream(lexer);

//    tokens.fill();
//    for(Token t : (List<Token>) tokens.getTokens()){
//      System.out.println(t + "" + t.getType());
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  }

  // HELPER METHODS //

  private LogicalExpression parseExpr(String expr) throws RecognitionException {
    ExprLexer lexer = new ExprLexer(new ANTLRStringStream(expr));
    CommonTokenStream tokens = new CommonTokenStream(lexer);
    ExprParser parser = new ExprParser(tokens);
    parse_return ret = parser.parse();
    return ret.e;
  }
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      throw new DrillRuntimeException("Error when setup fragment context" + ex);
    }
  }

  private LogicalExpression parseExpr(String expr) throws RecognitionException {
    ExprLexer lexer = new ExprLexer(new ANTLRStringStream(expr));
    CommonTokenStream tokens = new CommonTokenStream(lexer);
    ExprParser parser = new ExprParser(tokens);
    ExprParser.parse_return ret = parser.parse();
    return ret.e;
  }
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      if (expr == null || expr.isEmpty()) {
        return null;
      }
      try {
        // logger.debug("Parsing expression string '{}'", expr);
        ExprLexer lexer = new ExprLexer(new ANTLRStringStream(expr));
        CommonTokenStream tokens = new CommonTokenStream(lexer);
        ExprParser parser = new ExprParser(tokens);

        //TODO: move functionregistry and error collector to injectables.
        //ctxt.findInjectableValue(valueId, forProperty, beanInstance)
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      if (expr == null || expr.isEmpty()) {
        return null;
      }
      try {
        // logger.debug("Parsing expression string '{}'", expr);
        ExprLexer lexer = new ExprLexer(new ANTLRStringStream(expr));
        CommonTokenStream tokens = new CommonTokenStream(lexer);
        ExprParser parser = new ExprParser(tokens);

        //TODO: move functionregistry and error collector to injectables.
        //ctxt.findInjectableValue(valueId, forProperty, beanInstance)
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    v.addExpr(e2,  g.getRoot());
    System.out.println(g.generateAndGet());
  }

  private LogicalExpression getExpr(String expr) throws Exception{
    ExprLexer lexer = new ExprLexer(new ANTLRStringStream(expr));
    CommonTokenStream tokens = new CommonTokenStream(lexer);

//    tokens.fill();
//    for(Token t : (List<Token>) tokens.getTokens()){
//      System.out.println(t + "" + t.getType());
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Related Classes of org.apache.drill.common.expression.parser.ExprLexer

  • org.apache.drill.common.expression.LogicalExpression$De
  • org.apache.drill.common.expression.SchemaPath$De
  • org.apache.drill.exec.compile.TestEvaluationVisitor
  • org.apache.drill.exec.expr.ExpressionInterpreterTest
  • org.apache.drill.exec.expr.ExpressionTest
  • org.apache.drill.exec.ref.eval.SimpleEvaluationVisitor
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