Top Description Methods
javax.activation

public Interface DataSource

Known Direct Implementers
javax.activation.FileDataSource, javax.activation.URLDataSource, javax.activation.DataHandlerDataSource
Imports
java.io.InputStream, .OutputStream, .IOException
The DataSource interface provides the JavaBeans Activation Framework with an abstraction of an arbitrary collection of data. It provides a type for that data as well as access to it in the form of InputStreams and OutputStreams where appropriate.

Method Summary

Modifier and TypeMethod and Description
public String

Returns:

the MIME Type
getContentType()

This method returns the MIME type of the data in the form of a string.

public InputStream

Returns:

an InputStream
getInputStream()

This method returns an InputStream representing the data and throws the appropriate exception if it can not do so.

public String

Returns:

the name of the object.
getName()

Return the name of this object where the name of the object is dependant on the nature of the underlying objects.

public OutputStream

Returns:

an OutputStream
getOutputStream()

This method returns an OutputStream where the data can be written and throws the appropriate exception if it can not do so.

Method Detail

getContentTypeback to summary
public String getContentType()

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.

Returns:String

the MIME Type

getInputStreamback to summary
public InputStream getInputStream() throws IOException

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.

Returns:InputStream

an InputStream

Exceptions
IOException:
for failures creating the InputStream
getNameback to summary
public String getName()

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.)

Returns:String

the name of the object.

getOutputStreamback to summary
public OutputStream getOutputStream() throws IOException

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.

Returns:OutputStream

an OutputStream

Exceptions
IOException:
for failures creating the OutputStream