javax.activation: public interface: DataSource

javax.activation
public interface: DataSource [javadoc | source]

All Known Implementing Classes:
URLDataSource, DataHandlerDataSource, FileDataSource

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.

since: 1.6 -

Method from javax.activation.DataSource Summary:
getContentType, getInputStream, getName, getOutputStream

Method from javax.activation.DataSource Detail:
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.
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.
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.)
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.