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 EmptyDataSourceINSTANCEEmpty 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 StringgetContentType()InputStreamgetInputStream()StringgetName()OutputStreamgetOutputStream()longgetSize()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:
getContentTypein interfaceDataSource
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getName
public String getName()
- Specified by:
getNamein interfaceDataSource
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getSize
public long getSize()
Description copied from interface:SizeAwareDataSourceGet 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:
getSizein 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:
getInputStreamin interfaceDataSource- Throws:
IOException
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getOutputStream
public OutputStream getOutputStream() throws IOException
- Specified by:
getOutputStreamin interfaceDataSource- Throws:
IOException
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