com.thoughtworks.xstream.converters.collections

Class AbstractCollectionConverter

java.lang.Object

com.thoughtworks.xstream.converters.collections.AbstractCollectionConverter

All Implemented Interfaces:

Converter, ConverterMatcher

Direct Known Subclasses:

ArrayConverter, CollectionConverter, MapConverter, SubjectConverter

public abstract class AbstractCollectionConverter
extends Object
implements Converter

Base helper class for converters that need to handle collections of items (arrays, Lists, Maps, etc).

Typically, subclasses of this will converter the outer structure of the collection, loop through the contents and call readItem() or writeItem() for each item.

Author:

Joe Walnes

Constructor Summary

Constructors

Constructor and Description
AbstractCollectionConverter(Mapper mapper)

Method Summary

Modifier and Type	Method and Description
abstract boolean	canConvert(Class type) Determines whether the converter can marshall a particular type.
protected Object	createCollection(Class type)
protected Mapper	mapper()
abstract void	marshal(Object source, HierarchicalStreamWriter writer, MarshallingContext context) Convert an object to textual data.
protected Object	readItem(HierarchicalStreamReader reader, UnmarshallingContext context, Object current)
abstract Object	unmarshal(HierarchicalStreamReader reader, UnmarshallingContext context) Convert textual data back into an object.
protected void	writeItem(Object item, MarshallingContext context, HierarchicalStreamWriter writer)

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractCollectionConverter

public AbstractCollectionConverter(Mapper mapper)

Method Detail

canConvert

public abstract boolean canConvert(Class type)

Description copied from interface: ConverterMatcher

Determines whether the converter can marshall a particular type.

Specified by:

canConvert in interface ConverterMatcher

Parameters:

type - the Class representing the object type to be converted

mapper

protected Mapper mapper()

marshal

public abstract void marshal(Object source,
                             HierarchicalStreamWriter writer,
                             MarshallingContext context)

Description copied from interface: Converter

Convert an object to textual data.

Specified by:

marshal in interface Converter

Parameters:

source - The object to be marshalled.

writer - A stream to write to.

context - A context that allows nested objects to be processed by XStream.

unmarshal

public abstract Object unmarshal(HierarchicalStreamReader reader,
                                 UnmarshallingContext context)

Description copied from interface: Converter

Convert textual data back into an object.

Specified by:

unmarshal in interface Converter

Parameters:

reader - The stream to read the text from.

Returns:

The resulting object.

writeItem

protected void writeItem(Object item,
                         MarshallingContext context,
                         HierarchicalStreamWriter writer)

readItem

protected Object readItem(HierarchicalStreamReader reader,
                          UnmarshallingContext context,
                          Object current)

createCollection

protected Object createCollection(Class type)