Interface ExpressionParser

All Known Implementing Classes:

SpelExpressionParser, TemplateAwareExpressionParser

public interface ExpressionParser

Parses expression strings into compiled expressions that can be evaluated.

Supports parsing template expressions as well as standard expression strings.

Since:

3.0

Author:

Keith Donald, Andy Clement

Method Summary

Modifier and Type	Method	Description
Expression	parseExpression(String expressionString)	Parse the expression string and return an Expression object that can be used for repeated evaluation.
Expression	parseExpression(String expressionString, ParserContext context)	Parse the expression string and return an Expression object that can be used for repeated evaluation.

Method Details

parseExpression

Expression parseExpression(String expressionString)
                    throws ParseException

Parse the expression string and return an Expression object that can be used for repeated evaluation.

Examples:

    3 + 4
    name.firstName

Parameters:

expressionString - the raw expression string to parse

Returns:

an Expression for the parsed expression

Throws:

ParseException - if an exception occurred during parsing

parseExpression

Expression parseExpression(String expressionString,
 ParserContext context)
                    throws ParseException

Parse the expression string and return an Expression object that can be used for repeated evaluation.

Examples:

    3 + 4
    name.firstName

Parameters:

expressionString - the raw expression string to parse

context - a context for influencing the expression parsing routine

Returns:

an Expression for the parsed expression

Throws:

ParseException - if an exception occurred during parsing