org.springframework.expression.spel.support

Class StandardTypeConverter

java.lang.Object

org.springframework.expression.spel.support.StandardTypeConverter

All Implemented Interfaces:

TypeConverter

public class StandardTypeConverter
extends java.lang.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() Create a StandardTypeConverter for the default ConversionService.
StandardTypeConverter(org.springframework.core.convert.ConversionService conversionService) Create a StandardTypeConverter for the given 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.
java.lang.Object	convertValue(java.lang.Object value, org.springframework.core.convert.TypeDescriptor sourceType, org.springframework.core.convert.TypeDescriptor targetType) Convert (or 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()

Create a StandardTypeConverter for the default ConversionService.

StandardTypeConverter

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

Create a StandardTypeConverter for the given ConversionService.

Parameters:

conversionService - the ConversionService to delegate to

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

Description copied from interface: TypeConverter

Convert (or coerce) a value from one type to another, for example from a boolean to a String.

The TypeDescriptor parameters enable support for typed collections: A caller may prefer a List<Integer>, for example, rather than simply any 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