Class EnumMapper

java.lang.Object

com.thoughtworks.xstream.mapper.MapperWrapper

com.thoughtworks.xstream.mapper.EnumMapper

All Implemented Interfaces:

Caching, Mapper

public class EnumMapper
extends MapperWrapper
implements Caching

Mapper that handles the special case of polymorphic enums in Java 1.5. This renames MyEnum$1 to MyEnum making it less bloaty in the XML and avoiding the need for an alias per enum value to be specified. Additionally every enum is treated automatically as immutable and non-refrenceable type that can be written as attribute.

Nested Class Summary

Nested classes/interfaces inherited from interface Mapper

Mapper.ImplicitCollectionMapping, Mapper.Null

Field Summary

Fields

Modifier and Type	Field	Description
private AttributeMapper	attributeMapper
private Map<Class, SingleValueConverter>	enumConverterMap

Constructor Summary

Constructors

Constructor	Description
EnumMapper(Mapper wrapped)
EnumMapper(Mapper wrapped, ConverterLookup lookup)	Deprecated. As of 1.3.1, use EnumMapper(Mapper)

Method Summary

Modifier and Type	Method	Description
void	flushCache()
SingleValueConverter	getConverterFromAttribute(Class definedIn, String attribute, Class type)	Returns which converter to use for an specific attribute in a type.
SingleValueConverter	getConverterFromItemType(String fieldName, Class type, Class definedIn)	Returns a single value converter to be used in a specific field.
private SingleValueConverter	getLocalConverter(String fieldName, Class type, Class definedIn)
boolean	isImmutableValueType(Class type)	Whether this type is a simple immutable value (int, boolean, String, URL, etc).
boolean	isReferenceable(Class type)	Whether this type is referenceable in a stream.
private Object	readResolve()
String	serializedClass(Class type)	How a class name should be represented in its serialized form.

Methods inherited from class MapperWrapper

aliasForAttribute, aliasForAttribute, aliasForSystemAttribute, attributeForAlias, attributeForAlias, defaultImplementationOf, getConverterFromAttribute, getConverterFromAttribute, getConverterFromItemType, getConverterFromItemType, getFieldNameForItemTypeAndName, getImplicitCollectionDefForFieldName, getItemTypeForItemFieldName, getLocalConverter, isIgnoredElement, lookupMapperOfType, realClass, realMember, serializedMember, shouldSerializeMember

Methods inherited from class Object

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

Field Details

attributeMapper

private transient AttributeMapper attributeMapper

enumConverterMap

private transient Map<Class, SingleValueConverter> enumConverterMap

Constructor Details

EnumMapper

@Deprecated
public EnumMapper(Mapper wrapped,
 ConverterLookup lookup)

Deprecated.

As of 1.3.1, use EnumMapper(Mapper)

EnumMapper

public EnumMapper(Mapper wrapped)

Method Details

serializedClass

public String serializedClass(Class type)

Description copied from interface: Mapper

How a class name should be represented in its serialized form.

Specified by:

serializedClass in interface Mapper

Overrides:

serializedClass in class MapperWrapper

isImmutableValueType

public boolean isImmutableValueType(Class type)

Description copied from interface: Mapper

Whether this type is a simple immutable value (int, boolean, String, URL, etc). Immutable types will be repeatedly written in the serialized stream, instead of using object references.

Specified by:

isImmutableValueType in interface Mapper

Overrides:

isImmutableValueType in class MapperWrapper

isReferenceable

public boolean isReferenceable(Class type)

Description copied from interface: Mapper

Whether this type is referenceable in a stream.

Specified by:

isReferenceable in interface Mapper

Overrides:

isReferenceable in class MapperWrapper

getConverterFromItemType

public SingleValueConverter getConverterFromItemType(String fieldName,
 Class type,
 Class definedIn)

Description copied from interface: Mapper

Returns a single value converter to be used in a specific field.

Specified by:

getConverterFromItemType in interface Mapper

Overrides:

getConverterFromItemType in class MapperWrapper

Parameters:

fieldName - the field name

type - the field type

definedIn - the type which defines this field

Returns:

a SingleValueConverter or null if there no such converter should be used for this field.

getConverterFromAttribute

public SingleValueConverter getConverterFromAttribute(Class definedIn,
 String attribute,
 Class type)

Description copied from interface: Mapper

Returns which converter to use for an specific attribute in a type.

Specified by:

getConverterFromAttribute in interface Mapper

Overrides:

getConverterFromAttribute in class MapperWrapper

Parameters:

definedIn - the field's parent

attribute - the attribute name

type - the type the converter should create

getLocalConverter

private SingleValueConverter getLocalConverter(String fieldName,
 Class type,
 Class definedIn)

flushCache

public void flushCache()

Specified by:

flushCache in interface Caching

readResolve

private Object readResolve()