Package org.apache.cxf.attachment

Class LazyDataSource

java.lang.Object

org.apache.cxf.attachment.LazyDataSource

All Implemented Interfaces:

DataSource

public class LazyDataSource
extends Object
implements DataSource

A DataSource which will search through a Collection of attachments so as to lazily load the attachment from the collection. This allows streaming attachments with databinding toolkits like JAXB.

Constructor Summary

Constructors

Constructor	Description
LazyDataSource(String id, Collection<Attachment> attachments)

Method Summary

Modifier and Type	Method	Description
String	getContentType()	This method returns the MIME type of the data in the form of a string.
DataSource	getDataSource()
InputStream	getInputStream()	This method returns an InputStream representing the data and throws the appropriate exception if it can not do so.
String	getName()	Return the name of this object where the name of the object is dependant on the nature of the underlying objects.
OutputStream	getOutputStream()	This method returns an OutputStream where the data can be written and throws the appropriate exception if it can not do so.
void	setDataSource(DataSource dataSource)

Methods inherited from class java.lang.Object

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

Constructor Detail

LazyDataSource

public LazyDataSource(String id,
                      Collection<Attachment> attachments)

Method Detail

getContentType

public String getContentType()

Description copied from interface: DataSource

This method returns the MIME type of the data in the form of a string. It should always return a valid type. It is suggested that getContentType return "application/octet-stream" if the DataSource implementation can not determine the data type.

Specified by:

getContentType in interface DataSource

Returns:

the MIME Type

getInputStream

public InputStream getInputStream()
                           throws IOException

Description copied from interface: DataSource

This method returns an InputStream representing the data and throws the appropriate exception if it can not do so. Note that a new InputStream object must be returned each time this method is called, and the stream must be positioned at the beginning of the data.

Specified by:

getInputStream in interface DataSource

Returns:

an InputStream

Throws:

IOException - for failures creating the InputStream

getName

public String getName()

Description copied from interface: DataSource

Return the name of this object where the name of the object is dependant on the nature of the underlying objects. DataSources encapsulating files may choose to return the filename of the object. (Typically this would be the last component of the filename, not an entire pathname.)

Specified by:

getName in interface DataSource

Returns:

the name of the object.

getOutputStream

public OutputStream getOutputStream()
                             throws IOException

Description copied from interface: DataSource

This method returns an OutputStream where the data can be written and throws the appropriate exception if it can not do so. Note that a new OutputStream object must be returned each time this method is called, and the stream must be positioned at the location the data is to be written.

Specified by:

getOutputStream in interface DataSource

Returns:

an OutputStream

Throws:

IOException - for failures creating the OutputStream

getDataSource

public DataSource getDataSource()

setDataSource

public void setDataSource(DataSource dataSource)