程序包 cn.taketoday.core.conversion.support

类 MapToMapConverter

java.lang.Object

cn.taketoday.core.conversion.support.MapToMapConverter

所有已实现的接口:

ConditionalConverter, ConditionalGenericConverter, GenericConverter

final class MapToMapConverter
extends 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.

从以下版本开始:

3.0

作者:

Keith Donald, Juergen Hoeller

嵌套类概要

嵌套类

修饰符和类型	类	说明
private static final record	MapToMapConverter.MapEntry

从接口继承的嵌套类/接口 cn.taketoday.core.conversion.GenericConverter

GenericConverter.ConvertiblePair

字段概要

字段

修饰符和类型	字段	说明
private final ConversionService	conversionService

构造器概要

构造器

构造器	说明
MapToMapConverter(ConversionService conversionService)

方法概要

修饰符和类型	方法	说明
private boolean	canConvertKey(TypeDescriptor sourceType, TypeDescriptor targetType)
private boolean	canConvertValue(TypeDescriptor sourceType, TypeDescriptor targetType)
Object	convert(Object source, TypeDescriptor sourceType, TypeDescriptor targetType)	Convert the source object to the targetType described by the TypeDescriptor.
private Object	convertKey(Object sourceKey, TypeDescriptor sourceType, TypeDescriptor targetType)
private Object	convertValue(Object sourceValue, TypeDescriptor sourceType, TypeDescriptor targetType)
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?

从类继承的方法 java.lang.Object

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

字段详细资料

conversionService

private final ConversionService conversionService

构造器详细资料

MapToMapConverter

public MapToMapConverter(ConversionService conversionService)

方法详细资料

getConvertibleTypes

public Set<GenericConverter.ConvertiblePair> getConvertibleTypes()

从接口复制的说明: 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.

指定者:

getConvertibleTypes 在接口中 GenericConverter

matches

public boolean matches(TypeDescriptor sourceType,
 TypeDescriptor targetType)

从接口复制的说明: ConditionalConverter

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

指定者:

matches 在接口中 ConditionalConverter

参数:

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

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

返回:

true if conversion should be performed, false otherwise

convert

@Nullable
public Object convert(@Nullable
 Object source,
 TypeDescriptor sourceType,
 TypeDescriptor targetType)

从接口复制的说明: GenericConverter

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

指定者:

convert 在接口中 GenericConverter

参数:

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

返回:

the converted object

canConvertKey

private boolean canConvertKey(TypeDescriptor sourceType,
 TypeDescriptor targetType)

canConvertValue

private boolean canConvertValue(TypeDescriptor sourceType,
 TypeDescriptor targetType)

convertKey

@Nullable
private Object convertKey(Object sourceKey,
 TypeDescriptor sourceType,
 @Nullable
 TypeDescriptor targetType)

convertValue

@Nullable
private Object convertValue(Object sourceValue,
 TypeDescriptor sourceType,
 @Nullable
 TypeDescriptor targetType)