Package com.sun.mail.handlers

Class handler_base

java.lang.Object

com.sun.mail.handlers.handler_base

All Implemented Interfaces:

DataContentHandler

Direct Known Subclasses:

image_gif, message_rfc822, multipart_mixed, text_plain

public abstract class handler_base
extends Object
implements DataContentHandler

Base class for other DataContentHandlers.

Constructor Summary

Constructors

Constructor	Description
handler_base()

Method Summary

Modifier and Type	Method	Description
protected Object	getData(ActivationDataFlavor aFlavor, DataSource ds)	Given the flavor that matched, return the appropriate type of object.
protected abstract ActivationDataFlavor[]	getDataFlavors()	Return an array of ActivationDataFlavors that we support.
Object	getTransferData(DataFlavor df, DataSource ds)	Return the Transfer Data of type DataFlavor from InputStream.
DataFlavor[]	getTransferDataFlavors()	Return the DataFlavors for this DataContentHandler.

Methods inherited from interface javax.activation.DataContentHandler

getContent, writeTo

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

handler_base

public handler_base()

Method Detail

getDataFlavors

protected abstract ActivationDataFlavor[] getDataFlavors()

Return an array of ActivationDataFlavors that we support. Usually there will be only one.

Returns:

array of ActivationDataFlavors that we support

getData

protected Object getData(ActivationDataFlavor aFlavor,
                         DataSource ds)
                  throws IOException

Given the flavor that matched, return the appropriate type of object. Usually there's only one flavor so just call getContent.

Parameters:

aFlavor - the ActivationDataFlavor

ds - DataSource containing the data

Returns:

the object

Throws:

IOException - for errors reading the data

getTransferDataFlavors

public DataFlavor[] getTransferDataFlavors()

Return the DataFlavors for this DataContentHandler.

Specified by:

getTransferDataFlavors in interface DataContentHandler

Returns:

The DataFlavors

getTransferData

public Object getTransferData(DataFlavor df,
                              DataSource ds)
                       throws IOException

Return the Transfer Data of type DataFlavor from InputStream.

Specified by:

getTransferData in interface DataContentHandler

Parameters:

df - The DataFlavor

ds - The DataSource corresponding to the data

Returns:

the object

Throws:

IOException - for errors reading the data