Package org.apache.drill.common.expression

Examples of org.apache.drill.common.expression.FunctionRegistry

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    // ExprLexer lexer = new ExprLexer(new ANTLRStringStream("2+2"));

    CommonTokenStream tokens = new CommonTokenStream(lexer);

    ExprParser parser = new ExprParser(tokens);
    parser.setRegistry(new FunctionRegistry(DrillConfig.create()));
    parse_return ret = parser.parse();
    LogicalExpression e = ret.e;
    ObjectMapper mapper = new ObjectMapper();
    mapper.enable(SerializationFeature.INDENT_OUTPUT);
    System.out.println(mapper.writeValueAsString(e));
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  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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Related Classes of org.apache.drill.common.expression.FunctionRegistry

  • org.apache.drill.common.expression.parser.TreeTest
  • org.apache.drill.exec.expr.ExpressionTest
  • org.apache.drill.common.exceptions.DrillRuntimeException
  • org.apache.drill.common.exceptions.ExpressionParsingException
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