org.codehaus.cargo.module.merge
Class DocumentStreamAdapter

java.lang.Object
  org.codehaus.cargo.module.AbstractDescriptorIo
      org.codehaus.cargo.module.merge.DocumentStreamAdapter

All Implemented Interfaces:

MergeProcessor

public class DocumentStreamAdapter
extends AbstractDescriptorIo
implements MergeProcessor

Adapter class to convert streams into documents. This is needed because the DocumentMerger understands DOM Documents, but items in War files are accessed as streams - therefore use this wrapper to pass streams into the DocumentMerger (or subclass).

Version:

$Id: $

Constructor Summary

DocumentStreamAdapter(MergeProcessor next)
constructor.

Method Summary

void	addMergeItem(java.lang.Object mergeItem) Add an item to be merged.
protected org.w3c.dom.Document	getDocument(java.io.InputStream theInput) Parse the input stream into a document.
java.lang.Object	performMerge() Perform the merge.

Methods inherited from class org.codehaus.cargo.module.AbstractDescriptorIo

createDocumentBuilder, writeAll, writeDescriptor, writeDescriptor, writeDescriptor, writeDescriptor

Methods inherited from class java.lang.Object

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

Constructor Detail

DocumentStreamAdapter

public DocumentStreamAdapter(MergeProcessor next)

constructor.

Parameters:

next - the processor to adapt

Method Detail

addMergeItem

public void addMergeItem(java.lang.Object mergeItem)
                  throws MergeException

Add an item to be merged.

Specified by:

addMergeItem in interface MergeProcessor

Parameters:

mergeItem - in the item to merge.

Throws:

MergeException - on exceptions

See Also:

MergeProcessor.addMergeItem(java.lang.Object)

performMerge

public java.lang.Object performMerge()
                              throws MergeException

Perform the merge.

Specified by:

performMerge in interface MergeProcessor

Returns:

the merged artifact

Throws:

MergeException - if there is a problem

See Also:

MergeProcessor.performMerge()

getDocument

protected org.w3c.dom.Document getDocument(java.io.InputStream theInput)
                                    throws javax.xml.parsers.ParserConfigurationException,
                                           org.xml.sax.SAXException,
                                           java.io.IOException

Parse the input stream into a document.

Parameters:

theInput - in the InputStream to read

Returns:

Document generated from the stream

Throws:

javax.xml.parsers.ParserConfigurationException - on parse exception

org.xml.sax.SAXException - on sax exception

java.io.IOException - on IO exception