Package org.apache.axis2.jaxws.message.impl

Class BlockImpl<T,C>

java.lang.Object

org.apache.axiom.om.ds.AbstractOMDataSource

org.apache.axis2.jaxws.message.impl.BlockImpl<T,C>

All Implemented Interfaces:

OMDataSource, OMDataSourceExt, Block<T,C>

Direct Known Subclasses:

DataSourceBlockImpl, JAXBBlockImpl, OMBlockImpl, SOAPEnvelopeBlockImpl, SourceBlockImpl, XMLStringBlockImpl

public abstract class BlockImpl<T,C>
extends AbstractOMDataSource
implements Block<T,C>

BlockImpl Abstract Base class for various Block Implementations.

The base class takes care of controlling the transformations between BusinessObject, XMLStreamReader and SOAPElement A derived class must minimally define the following: _getBOFromReader _getReaderFromBO _outputFromBO

In addtion, the derived class may want to override the following: _getBOFromBO ...if the BusinessObject is consumed when read (i.e. it is an InputSource)

The derived classes don't have direct access to the instance data. This ensures that BlockImpl controls the transformations.

Field Summary

Fields

Modifier and Type	Field	Description
protected C	busContext
protected T	busObject
protected boolean	consumed
protected BlockFactory	factory
protected OMElement	omElement
protected Message	parent
protected QName	qName

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	BlockImpl(C busContext, OMElement omElement, QName qName, BlockFactory factory)
protected	BlockImpl(OMElement omElement, C busContext, QName qName, BlockFactory factory)	A Block has the following components
protected	BlockImpl(T busObject, C busContext, QName qName, BlockFactory factory)	A Block has the following components

Method Summary

Modifier and Type	Method	Description
protected T	_getBOFromBO(T busObject, C busContext, boolean consume)	The default implementation is to return the business object.
protected abstract T	_getBOFromOM(OMElement omElement, C busContext)	Default method for getting business object from OM.
protected OMElement	_getOMFromBO(T busObject, C busContext)
protected abstract XMLStreamReader	_getReaderFromBO(T busObj, C busContext)	Get an XMLStreamReader for the BusinessObject The derived Block must implement this method
protected abstract void	_outputFromBO(T busObject, C busContext, XMLStreamWriter writer)	Output BusinessObject contents to a Writer.
protected void	_outputFromOM(OMElement omElement, XMLStreamWriter writer, boolean consume)	Output OMElement contents to a Writer.
protected void	_outputFromReader(XMLStreamReader reader, XMLStreamWriter writer)	Output Reader contents to a Writer.
protected XMLStreamReader	_postPivot_getXMLStreamReader()	Called if we have passed the pivot point but someone wants to output the block.
protected void	_postPivot_outputTo(XMLStreamWriter writer)	Called if we have passed the pivot point but someone wants to output the block.
OMDataSourceExt	copy()
BlockFactory	getBlockFactory()	Get BlockFactory
Object	getBusinessContext()	GetBusinesContext Some business objects have an associated context object (i.e.
T	getBusinessObject(boolean consume)	Get a reference to the Business Object represented by this Block
OMElement	getOMElement()	Get the OMElement represented by this Block.
Message	getParent()	Get the Message associated with this block
QName	getQName()	Get the QName (namespace, localpart) of the Block.
XMLStreamReader	getReader()
XMLStreamReader	getXMLStreamReader(boolean consume)	Get the XMLStreamReader represented by this Block
protected boolean	isBusinessObject()
boolean	isConsumed()	isConsumed Return true if the block is consumed.
boolean	isQNameAvailable()
void	outputTo(XMLStreamWriter writer, boolean consume)	Write out the Block
void	serialize(XMLStreamWriter writer)
void	setConsumed(boolean consume)	Once consumed, all instance data objects are nullified to prevent subsequent access
void	setParent(Message p)	Set the Message associated with this block (This method is intended to be called by the Message Implementation only)
protected void	setQName(QName qName)	This method is intended for derived objects to set the qName
String	traceString(String indent)	Get a traceString...the trace string dumps the contents of the Block without forcing an underlying ill-performant transformation of the message.

Methods inherited from class org.apache.axiom.om.ds.AbstractOMDataSource

close, getObject, getProperty, getXMLBytes, getXMLInputStream, hasProperty, serialize, serialize, setProperty

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.axis2.jaxws.message.Block

isElementData

Methods inherited from interface org.apache.axiom.om.OMDataSource

serialize, serialize

Methods inherited from interface org.apache.axiom.om.OMDataSourceExt

close, getObject, getProperty, getXMLBytes, getXMLInputStream, hasProperty, isDestructiveRead, isDestructiveWrite, setProperty

Field Detail

busObject

protected T busObject

busContext

protected C busContext

omElement

protected OMElement omElement

qName

protected QName qName

factory

protected BlockFactory factory

consumed

protected boolean consumed

parent

protected Message parent

Constructor Detail

BlockImpl

protected BlockImpl(T busObject,
                    C busContext,
                    QName qName,
                    BlockFactory factory)

A Block has the following components

Parameters:

busObject -

busContext - or null

qName - or null if unknown

factory - that creates the Block

BlockImpl

protected BlockImpl(OMElement omElement,
                    C busContext,
                    QName qName,
                    BlockFactory factory)

A Block has the following components

Parameters:

reader -

busContext - or null

qName - or null if unknown

factory - that creates the Block

BlockImpl

protected BlockImpl(C busContext,
                    OMElement omElement,
                    QName qName,
                    BlockFactory factory)

Method Detail

getBlockFactory

public final BlockFactory getBlockFactory()

Description copied from interface: Block

Get BlockFactory

Specified by:

getBlockFactory in interface Block<T,C>

Returns:

BlockFactory that created the Block

getBusinessContext

public final Object getBusinessContext()

Description copied from interface: Block

GetBusinesContext Some business objects have an associated context object (i.e. JAXBContext)

Specified by:

getBusinessContext in interface Block<T,C>

Returns:

Context Object or null

getParent

public final Message getParent()

Description copied from interface: Block

Get the Message associated with this block

Specified by:

getParent in interface Block<T,C>

Returns:

Message

setParent

public void setParent(Message p)

Description copied from interface: Block

Set the Message associated with this block (This method is intended to be called by the Message Implementation only)

Specified by:

setParent in interface Block<T,C>

getBusinessObject

public final T getBusinessObject(boolean consume)
                          throws XMLStreamException,
                                 WebServiceException

Description copied from interface: Block

Get a reference to the Business Object represented by this Block

Specified by:

getBusinessObject in interface Block<T,C>

Parameters:

consume - true if this is the last request on the block.

Returns:

Object (JAXB, String etc.)

Throws:

XMLStreamException

WebServiceException

getQName

public final QName getQName()
                     throws WebServiceException

Description copied from interface: Block

Get the QName (namespace, localpart) of the Block. Do not depend on prefix being set correctly. Asking for the QName can cause a performant hit.

Specified by:

getQName in interface Block<T,C>

Returns:

QName of the block

Throws:

WebServiceException

See Also:

Block.isQNameAvailable()

setQName

protected final void setQName(QName qName)

This method is intended for derived objects to set the qName

Parameters:

qName -

getXMLStreamReader

public final XMLStreamReader getXMLStreamReader(boolean consume)
                                         throws XMLStreamException,
                                                WebServiceException

Description copied from interface: Block

Get the XMLStreamReader represented by this Block

Specified by:

getXMLStreamReader in interface Block<T,C>

Parameters:

consume - true if this is the last request on the block.

Returns:

XMLStreamReader

Throws:

XMLStreamException

WebServiceException

getReader

public final XMLStreamReader getReader()
                                throws XMLStreamException

Specified by:

getReader in interface OMDataSource

Throws:

XMLStreamException

serialize

public final void serialize(XMLStreamWriter writer)
                     throws XMLStreamException

Specified by:

serialize in interface OMDataSource

Throws:

XMLStreamException

getOMElement

public OMElement getOMElement()
                       throws XMLStreamException,
                              WebServiceException

Description copied from interface: Block

Get the OMElement represented by this Block. This call always consumes the block because you are taking control of the underlying OM

Specified by:

getOMElement in interface Block<T,C>

Returns:

Throws:

XMLStreamException

WebServiceException

isConsumed

public final boolean isConsumed()

Description copied from interface: Block

isConsumed Return true if the block is consumed. Once consumed, the information in the block is no longer available.

Specified by:

isConsumed in interface Block<T,C>

Returns:

true if the block is consumed (a method was called with consume=true)

setConsumed

public final void setConsumed(boolean consume)

Once consumed, all instance data objects are nullified to prevent subsequent access

Parameters:

consume -

isQNameAvailable

public final boolean isQNameAvailable()

Specified by:

isQNameAvailable in interface Block<T,C>

Returns:

If QName is available without doing an expensive parse of the business object, then return true Otherwise return false Note: This method should be used in situations where it would be nice to know the qname (like logging or a special check) but we don't want to cause an ill-performant parse.

outputTo

public final void outputTo(XMLStreamWriter writer,
                           boolean consume)
                    throws XMLStreamException,
                           WebServiceException

Description copied from interface: Block

Write out the Block

Specified by:

outputTo in interface Block<T,C>

Parameters:

writer - XMLStreamWriter

consume - true if this is the last request on the block.

Throws:

XMLStreamException

WebServiceException

_postPivot_outputTo

protected final void _postPivot_outputTo(XMLStreamWriter writer)
                                  throws XMLStreamException,
                                         WebServiceException

Called if we have passed the pivot point but someone wants to output the block. The actual block implementation may choose to override this setting

Throws:

XMLStreamException

WebServiceException

_postPivot_getXMLStreamReader

protected final XMLStreamReader _postPivot_getXMLStreamReader()
                                                       throws XMLStreamException,
                                                              WebServiceException

Called if we have passed the pivot point but someone wants to output the block. The actual block implementation may choose to override this setting.

Throws:

XMLStreamException

WebServiceException

isBusinessObject

protected final boolean isBusinessObject()

Returns:

true if the representation of the block is currently a business object. Derived classes may use this information to get information in a performant way.

traceString

public final String traceString(String indent)

Description copied from interface: Block

Get a traceString...the trace string dumps the contents of the Block without forcing an underlying ill-performant transformation of the message.

Specified by:

traceString in interface Block<T,C>

Returns:

String containing trace information

_getBOFromBO

protected T _getBOFromBO(T busObject,
                         C busContext,
                         boolean consume)

The default implementation is to return the business object. A derived block may want to override this class if the business object is consumed when read (thus the dervived block may want to make a buffered copy) (An example use case for overriding this method is the businessObject is an InputSource)

Parameters:

busObject -

busContext -

consume -

Returns:

_getBOFromOM

protected abstract T _getBOFromOM(OMElement omElement,
                                  C busContext)
                           throws XMLStreamException,
                                  WebServiceException

Default method for getting business object from OM. Derived classes may override this method to get the business object from a data source.

Parameters:

om -

busContext -

Returns:

Business Object

Throws:

XMLStreamException

WebServiceException

_getReaderFromBO

protected abstract XMLStreamReader _getReaderFromBO(T busObj,
                                                    C busContext)
                                             throws XMLStreamException,
                                                    WebServiceException

Get an XMLStreamReader for the BusinessObject The derived Block must implement this method

Parameters:

busObj -

busContext -

Returns:

Throws:

XMLStreamException

WebServiceException

_getOMFromBO

protected OMElement _getOMFromBO(T busObject,
                                 C busContext)
                          throws XMLStreamException,
                                 WebServiceException

Parameters:

busObject -

busContext -

Returns:

OMElement

Throws:

XMLStreamException

WebServiceException

_outputFromReader

protected final void _outputFromReader(XMLStreamReader reader,
                                       XMLStreamWriter writer)
                                throws XMLStreamException

Output Reader contents to a Writer. The default implementation is probably sufficient for most derived classes.

Parameters:

reader -

writer -

Throws:

XMLStreamException

_outputFromOM

protected final void _outputFromOM(OMElement omElement,
                                   XMLStreamWriter writer,
                                   boolean consume)
                            throws XMLStreamException

Output OMElement contents to a Writer. The default implementation is probably sufficient for most derived classes.

Parameters:

om -

writer -

Throws:

XMLStreamException

copy

public OMDataSourceExt copy()
                     throws OMException

Specified by:

copy in interface OMDataSourceExt

Overrides:

copy in class AbstractOMDataSource

Throws:

OMException

_outputFromBO

protected abstract void _outputFromBO(T busObject,
                                      C busContext,
                                      XMLStreamWriter writer)
                               throws XMLStreamException,
                                      WebServiceException

Output BusinessObject contents to a Writer. Derived classes must provide this implementation

Parameters:

busObject -

busContext -

writer -

Throws:

XMLStreamException

WebServiceException