de.ruedigermoeller.serialization.dson

Class DsonTypeMapper

java.lang.Object

de.ruedigermoeller.serialization.dson.DsonTypeMapper

public class DsonTypeMapper
extends Object

simple implementation of type mapper. * Maps Classes to short string names and vice versa. * allows to add user-defined type conversions (e.g. Date, Collections) This default implementation support for Date<=>String and Collections<=>Array coercion.

Field Summary

Fields

Modifier and Type	Field and Description
protected DateFormat	dateTimeInstance
protected HashMap<String,String>	impliedMap
protected HashMap<Class,String>	reverseTypeMap
protected HashMap<String,Class>	typeMap

Constructor Summary

Constructors

Constructor and Description
DsonTypeMapper()

Method Summary

Modifier and Type	Method and Description
Object	coerceReading(Class type, Object readObject) map given Object to a target type.
Object	coerceWriting(Object objectValue) map given object found in the object graph to another type representation.
DateFormat	getDateTimeInstance()
String	getImpliedAttr(Class mappedClass, String type)
String	getStringForType(Class c)
Class	getType(String type)
DsonTypeMapper	implyAttrFromType(String type, String attr)
DsonTypeMapper	map(Class... c)
DsonTypeMapper	map(String name, Class c)
Object	mapLiteral(String type)
void	setDateTimeInstance(DateFormat dateTimeInstance)

Methods inherited from class java.lang.Object

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

Field Detail

typeMap

protected HashMap<String,Class> typeMap

impliedMap

protected HashMap<String,String> impliedMap

reverseTypeMap

protected HashMap<Class,String> reverseTypeMap

dateTimeInstance

protected DateFormat dateTimeInstance

Constructor Detail

DsonTypeMapper

public DsonTypeMapper()

Method Detail

getType

public Class getType(String type)

getStringForType

public String getStringForType(Class c)

implyAttrFromType

public DsonTypeMapper implyAttrFromType(String type,
                                        String attr)

map

public DsonTypeMapper map(String name,
                          Class c)

map

public DsonTypeMapper map(Class... c)

coerceReading

public Object coerceReading(Class type,
                            Object readObject)

map given Object to a target type. (needs support in coerceWriting also) Note one could add a pluggable Serializer/Coercer pattern here if required. Skipped for now for simplicity.

Parameters:

type - - of target field

readObject - - object read from string

Returns:

coerceWriting

public Object coerceWriting(Object objectValue)

map given object found in the object graph to another type representation. Useful to map collecitons to arrays and to support user-defined String representations (needs support in coerceReading also). Note one could add a pluggable Serializer/Coercer pattern here if required. Skipped for now for simplicity.

Parameters:

objectValue -

Returns:

getDateTimeInstance

public DateFormat getDateTimeInstance()

setDateTimeInstance

public void setDateTimeInstance(DateFormat dateTimeInstance)

mapLiteral

public Object mapLiteral(String type)

getImpliedAttr

public String getImpliedAttr(Class mappedClass,
                             String type)