Package org.apache.axiom.util.activation
Class EmptyDataSource
- java.lang.Object
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- org.apache.axiom.util.activation.EmptyDataSource
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- All Implemented Interfaces:
DataSource
,SizeAwareDataSource
public class EmptyDataSource extends Object implements SizeAwareDataSource
A data source with empty (zero length) content.
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Field Summary
Fields Modifier and Type Field Description static EmptyDataSource
INSTANCE
Empty data source instance with content typeapplication/octet-stream
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Constructor Summary
Constructors Constructor Description EmptyDataSource(String contentType)
Construct an empty data source with the given content type.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description String
getContentType()
InputStream
getInputStream()
String
getName()
OutputStream
getOutputStream()
long
getSize()
Get the size of the data source.
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Field Detail
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INSTANCE
public static final EmptyDataSource INSTANCE
Empty data source instance with content typeapplication/octet-stream
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Constructor Detail
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EmptyDataSource
public EmptyDataSource(String contentType)
Construct an empty data source with the given content type.- Parameters:
contentType
- the content type
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Method Detail
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getContentType
public String getContentType()
- Specified by:
getContentType
in interfaceDataSource
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getName
public String getName()
- Specified by:
getName
in interfaceDataSource
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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 byDataSource.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 interfaceSizeAwareDataSource
- Returns:
- the size of the data source or -1 if the size is not known
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getInputStream
public InputStream getInputStream() throws IOException
- Specified by:
getInputStream
in interfaceDataSource
- Throws:
IOException
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getOutputStream
public OutputStream getOutputStream() throws IOException
- Specified by:
getOutputStream
in interfaceDataSource
- Throws:
IOException
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