org.apache.axiom.util.activation
Class EmptyDataSource

java.lang.Object
  extended by org.apache.axiom.util.activation.EmptyDataSource
All Implemented Interfaces:
DataSource, SizeAwareDataSource

public class EmptyDataSource
extends Object
implements SizeAwareDataSource

A data source with empty (zero length) content.


Field Summary
static EmptyDataSource INSTANCE
          Empty data source instance with content type application/octet-stream.
 
Constructor Summary
EmptyDataSource(String contentType)
          Construct an empty data source with the given content type.
 
Method Summary
 String getContentType()
           
 InputStream getInputStream()
           
 String getName()
           
 OutputStream getOutputStream()
           
 long getSize()
          Get the size of the data source.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

INSTANCE

public static final EmptyDataSource INSTANCE
Empty data source instance with content type application/octet-stream.

Constructor Detail

EmptyDataSource

public EmptyDataSource(String contentType)
Construct an empty data source with the given content type.

Parameters:
contentType - the content type
Method Detail

getContentType

public String getContentType()
Specified by:
getContentType in interface DataSource

getName

public String getName()
Specified by:
getName in interface DataSource

getSize

public long getSize()
Description copied from interface: SizeAwareDataSource
Get the size of the data source. Implementations must return the number of bytes that can be read from the input stream returned by DataSource.getInputStream() before reaching the end of the stream. If the implementation is unable to determine the size, it must return -1.

Specified by:
getSize in interface SizeAwareDataSource
Returns:
the size of the data source or -1 if the size is not known

getInputStream

public InputStream getInputStream()
                           throws IOException
Specified by:
getInputStream in interface DataSource
Throws:
IOException

getOutputStream

public OutputStream getOutputStream()
                             throws IOException
Specified by:
getOutputStream in interface DataSource
Throws:
IOException


Copyright © 2004-2012 The Apache Software Foundation. All Rights Reserved.