org.springframework.expression.spel.support

Class StandardTypeConverter

java.lang.Object

org.springframework.expression.spel.support.StandardTypeConverter

All Implemented Interfaces:

TypeConverter

public class StandardTypeConverter
extends Object
implements TypeConverter

Default implementation of the TypeConverter interface, delegating to a core Spring ConversionService.

Since:

3.0

Author:

Juergen Hoeller, Andy Clement

See Also:

ConversionService

Constructor Summary

Constructors

Constructor and Description
StandardTypeConverter()
StandardTypeConverter(org.springframework.core.convert.ConversionService conversionService)

Method Summary

Methods

Modifier and Type	Method and Description
boolean	canConvert(org.springframework.core.convert.TypeDescriptor sourceType, org.springframework.core.convert.TypeDescriptor targetType) Return true if the type converter can convert the specified type to the desired target type.
Object	convertValue(Object value, org.springframework.core.convert.TypeDescriptor sourceType, org.springframework.core.convert.TypeDescriptor targetType) Convert (may coerce) a value from one type to another, for example from a boolean to a string.

Methods inherited from class java.lang.Object

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

Constructor Detail

StandardTypeConverter

public StandardTypeConverter()

StandardTypeConverter

public StandardTypeConverter(org.springframework.core.convert.ConversionService conversionService)

Method Detail

canConvert

public boolean canConvert(org.springframework.core.convert.TypeDescriptor sourceType,
                 org.springframework.core.convert.TypeDescriptor targetType)

Description copied from interface: TypeConverter

Return true if the type converter can convert the specified type to the desired target type.

Specified by:

canConvert in interface TypeConverter

Parameters:

sourceType - a type descriptor that describes the source type

targetType - a type descriptor that describes the requested result type

Returns:

true if that conversion can be performed

convertValue

public Object convertValue(Object value,
                  org.springframework.core.convert.TypeDescriptor sourceType,
                  org.springframework.core.convert.TypeDescriptor targetType)

Description copied from interface: TypeConverter

Convert (may coerce) a value from one type to another, for example from a boolean to a string. The typeDescriptor parameter enables support for typed collections - if the caller really wishes they can have a List<Integer> for example, rather than simply a List.

Specified by:

convertValue in interface TypeConverter

Parameters:

value - the value to be converted

sourceType - a type descriptor that supplies extra information about the source object

targetType - a type descriptor that supplies extra information about the requested result type

Returns:

the converted value