org.springframework.binding.expression.spel

Class SpringELExpressionParser

java.lang.Object

org.springframework.binding.expression.spel.SpringELExpressionParser

All Implemented Interfaces:

ExpressionParser

Direct Known Subclasses:

WebFlowSpringELExpressionParser

public class SpringELExpressionParser
extends java.lang.Object
implements ExpressionParser

Adapt the Spring EL SpelExpressionParser to the Spring Binding ExpressionParser contract.

Since:

2.1.0

Author:

Rossen Stoyanchev

Constructor Summary

Constructors

Constructor and Description
SpringELExpressionParser(org.springframework.expression.spel.standard.SpelExpressionParser expressionParser)
SpringELExpressionParser(org.springframework.expression.spel.standard.SpelExpressionParser expressionParser, ConversionService conversionService)

Method Summary

Modifier and Type	Method and Description
void	addPropertyAccessor(org.springframework.expression.PropertyAccessor propertyAccessor)
protected SpringELExpression	createSpringELExpression(java.util.Map<java.lang.String,Expression> expressionVars, org.springframework.expression.Expression spelExpression, java.lang.Class<?> expectedResultType, org.springframework.core.convert.ConversionService conversionService) Create the SpringELExpression.
ConversionService	getConversionService()
Expression	parseExpression(java.lang.String expression, ParserContext context) Parse the expression string and return a compiled Expression object you can use for evaluation.

Methods inherited from class java.lang.Object

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

Constructor Detail

SpringELExpressionParser

public SpringELExpressionParser(org.springframework.expression.spel.standard.SpelExpressionParser expressionParser)

SpringELExpressionParser

public SpringELExpressionParser(org.springframework.expression.spel.standard.SpelExpressionParser expressionParser,
                                ConversionService conversionService)

Method Detail

getConversionService

public ConversionService getConversionService()

addPropertyAccessor

public void addPropertyAccessor(org.springframework.expression.PropertyAccessor propertyAccessor)

parseExpression

public Expression parseExpression(java.lang.String expression,
                                  ParserContext context)
                           throws ParserException

Description copied from interface: ExpressionParser

Parse the expression string and return a compiled Expression object you can use for evaluation. Some examples:

     3 + 4
     name.firstName
 

Specified by:

parseExpression in interface ExpressionParser

Parameters:

expression - the raw expression string to parse

context - a context for influencing this expression parsing routine (optional)

Returns:

an evaluator for the parsed expression

Throws:

ParserException - an exception occurred during parsing

createSpringELExpression

protected SpringELExpression createSpringELExpression(java.util.Map<java.lang.String,Expression> expressionVars,
                                                      org.springframework.expression.Expression spelExpression,
                                                      java.lang.Class<?> expectedResultType,
                                                      org.springframework.core.convert.ConversionService conversionService)

Create the SpringELExpression.

Note: as of 2.4.8, this method is not invoked when a SimpleParserContext is passed in, which is mainly the case when using SpEL for data binding. In those scenarios, the configuration options are limited to the use of property accessors and a ConversionService.