com.thoughtworks.xstream.converters.collections
Class AbstractCollectionConverter

java.lang.Object
  extended by com.thoughtworks.xstream.converters.collections.AbstractCollectionConverter
All Implemented Interfaces:
Converter, ConverterMatcher
Direct Known Subclasses:
ArrayConverter, CollectionConverter, MapConverter, SubjectConverter

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

readItem

protected java.lang.Object readItem(HierarchicalStreamReader reader,
                                    UnmarshallingContext context,
                                    java.lang.Object current)

createCollection

protected java.lang.Object createCollection(java.lang.Class type)


Joe Walnes, http://xstream.codehaus.org/