org.springframework.binding.expression.beanwrapper
Class BeanWrapperExpressionParser

java.lang.Object
  org.springframework.binding.expression.support.AbstractExpressionParser
      org.springframework.binding.expression.beanwrapper.BeanWrapperExpressionParser

All Implemented Interfaces:

ExpressionParser

public class BeanWrapperExpressionParser
extends AbstractExpressionParser

An expression parser that parses BeanWrapper property expressions.

Author:

Keith Donald

Constructor Summary

BeanWrapperExpressionParser()
Creates a new expression parser that uses a DefaultConversionService to perform type conversion.

BeanWrapperExpressionParser(ConversionService conversionService)
Creates a new expression parser that uses the specified conversion service for type conversion.

Method Summary

protected Expression	doParseExpression(java.lang.String expressionString, ParserContext context)
ConversionService	getConversionService() The conversion service to use to obtain conversion executors that will be adapted to property editors for use during a set value call.
void	setAutoGrowCollectionLimit(int autoGrowCollectionLimit) Specify a limit for array and collection auto-growing.
void	setAutoGrowNestedPaths(boolean autoGrowNestedPaths) Set whether this BeanWrapper should attempt to "auto-grow" a nested path that contains a null value.
void	setConversionService(ConversionService conversionService) Sets the conversion service to use to obtain conversion executors that will be adapted to property editors for use during a set value call.

Methods inherited from class org.springframework.binding.expression.support.AbstractExpressionParser

getAllowDelimitedEvalExpressions, getExpressionPrefix, getExpressionSuffix, parseExpression, parseVariableExpressions, setAllowDelimitedEvalExpressions, setExpressionPrefix, setExpressionSuffix

Methods inherited from class java.lang.Object

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

Constructor Detail

BeanWrapperExpressionParser

public BeanWrapperExpressionParser()

Creates a new expression parser that uses a DefaultConversionService to perform type conversion.

BeanWrapperExpressionParser

public BeanWrapperExpressionParser(ConversionService conversionService)

Creates a new expression parser that uses the specified conversion service for type conversion.

Parameters:

conversionService - the conversion service to use

Method Detail

getConversionService

public ConversionService getConversionService()

The conversion service to use to obtain conversion executors that will be adapted to property editors for use during a set value call. The default if not specified is an instance of DefaultConversionService.

setConversionService

public void setConversionService(ConversionService conversionService)

Sets the conversion service to use to obtain conversion executors that will be adapted to property editors for use during a set value call.

Parameters:

conversionService - the conversion service

setAutoGrowNestedPaths

public void setAutoGrowNestedPaths(boolean autoGrowNestedPaths)

Set whether this BeanWrapper should attempt to "auto-grow" a nested path that contains a null value.

If "true", a null path location will be populated with a default object value and traversed instead of resulting in a NullValueInNestedPathException. Turning this flag on also enables auto-growth of collection elements when accessing an out-of-bounds index.

Default is "false" on a plain BeanWrapper.

setAutoGrowCollectionLimit

public void setAutoGrowCollectionLimit(int autoGrowCollectionLimit)

Specify a limit for array and collection auto-growing.

Default is unlimited on a plain BeanWrapper.

doParseExpression

protected Expression doParseExpression(java.lang.String expressionString,
                                       ParserContext context)
                                throws ParserException

Specified by:

doParseExpression in class AbstractExpressionParser

Throws:

ParserException