Package org.apache.drill.common.parser

Class LogicalExpressionParser

java.lang.Object

org.apache.drill.common.parser.LogicalExpressionParser

public class LogicalExpressionParser
extends Object

Helper class for parsing logical expression.

Constructor Summary

Constructors

Constructor	Description
LogicalExpressionParser()

Method Summary

Modifier and Type	Method	Description
static LogicalExpression	parse(String expr)	Initializes logical expression lexer and parser, add error listener that converts all syntax error into ExpressionParsingException.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

LogicalExpressionParser

public LogicalExpressionParser()

Method Details

parse

public static LogicalExpression parse(String expr)

Initializes logical expression lexer and parser, add error listener that converts all syntax error into ExpressionParsingException. Parses given expression into logical expression instance.

Parameters:

expr - expression to be parsed

Returns:

logical expression instance