org.springframework.core.convert.support

Class MapToMapConverter

java.lang.Object

org.springframework.core.convert.support.MapToMapConverter

All Implemented Interfaces:

ConditionalConverter, ConditionalGenericConverter, GenericConverter

final class MapToMapConverter
extends java.lang.Object
implements ConditionalGenericConverter

Converts a Map to another Map.

First, creates a new Map of the requested targetType with a size equal to the size of the source Map. Then copies each element in the source map to the target map. Will perform a conversion from the source maps's parameterized K,V types to the target map's parameterized types K,V if necessary.

Since:

3.0

Author:

Keith Donald, Juergen Hoeller

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
private static class	MapToMapConverter.MapEntry

Nested classes/interfaces inherited from interface org.springframework.core.convert.converter.GenericConverter

GenericConverter.ConvertiblePair

Field Summary

Fields

Modifier and Type	Field and Description
private ConversionService	conversionService

Constructor Summary

Constructors

Constructor and Description
MapToMapConverter(ConversionService conversionService)

Method Summary

Modifier and Type	Method and Description
private boolean	canConvertKey(TypeDescriptor sourceType, TypeDescriptor targetType)
private boolean	canConvertValue(TypeDescriptor sourceType, TypeDescriptor targetType)
java.lang.Object	convert(java.lang.Object source, TypeDescriptor sourceType, TypeDescriptor targetType) Convert the source object to the targetType described by the TypeDescriptor.
private java.lang.Object	convertKey(java.lang.Object sourceKey, TypeDescriptor sourceType, TypeDescriptor targetType)
private java.lang.Object	convertValue(java.lang.Object sourceValue, TypeDescriptor sourceType, TypeDescriptor targetType)
java.util.Set<GenericConverter.ConvertiblePair>	getConvertibleTypes() Return the source and target types that this converter can convert between.
boolean	matches(TypeDescriptor sourceType, TypeDescriptor targetType) Should the conversion from sourceType to targetType currently under consideration be selected?

Methods inherited from class java.lang.Object

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

Field Detail

conversionService

private final ConversionService conversionService

Constructor Detail

MapToMapConverter

public MapToMapConverter(ConversionService conversionService)

Method Detail

getConvertibleTypes

public java.util.Set<GenericConverter.ConvertiblePair> getConvertibleTypes()

Description copied from interface: GenericConverter

Return the source and target types that this converter can convert between.

Each entry is a convertible source-to-target type pair.

For conditional converters this method may return null to indicate all source-to-target pairs should be considered.

Specified by:

getConvertibleTypes in interface GenericConverter

matches

public boolean matches(TypeDescriptor sourceType,
                       TypeDescriptor targetType)

Description copied from interface: ConditionalConverter

Should the conversion from sourceType to targetType currently under consideration be selected?

Specified by:

matches in interface ConditionalConverter

Parameters:

sourceType - the type descriptor of the field we are converting from

targetType - the type descriptor of the field we are converting to

Returns:

true if conversion should be performed, false otherwise

convert

public java.lang.Object convert(java.lang.Object source,
                                TypeDescriptor sourceType,
                                TypeDescriptor targetType)

Description copied from interface: GenericConverter

Convert the source object to the targetType described by the TypeDescriptor.

Specified by:

convert in interface GenericConverter

Parameters:

source - the source object to convert (may be null)

sourceType - the type descriptor of the field we are converting from

targetType - the type descriptor of the field we are converting to

Returns:

the converted object

canConvertKey

private boolean canConvertKey(TypeDescriptor sourceType,
                              TypeDescriptor targetType)

canConvertValue

private boolean canConvertValue(TypeDescriptor sourceType,
                                TypeDescriptor targetType)

convertKey

private java.lang.Object convertKey(java.lang.Object sourceKey,
                                    TypeDescriptor sourceType,
                                    TypeDescriptor targetType)

convertValue

private java.lang.Object convertValue(java.lang.Object sourceValue,
                                      TypeDescriptor sourceType,
                                      TypeDescriptor targetType)