org.apache.james.mime4j.dom

Class SingleBody

java.lang.Object

org.apache.james.mime4j.dom.SingleBody

All Implemented Interfaces:

Body, Disposable

Direct Known Subclasses:

BinaryBody, TextBody

public abstract class SingleBody
extends java.lang.Object
implements Body

Abstract implementation of a single message body; that is, a body that does not contain (directly or indirectly) any other child bodies. It also provides the parent functionality required by bodies.

Field Summary

Fields

Modifier and Type	Field and Description
(package private) static int	DEFAULT_ENCODING_BUFFER_SIZE
private Entity	parent

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	SingleBody() Sole constructor.

Method Summary

Modifier and Type	Method and Description
SingleBody	copy() Returns a copy of this SingleBody (optional operation).
private static void	copy(java.io.InputStream in, java.io.OutputStream out) Copies the contents of one stream to the other.
void	dispose() Subclasses should override this method if they have allocated resources that need to be freed explicitly (e.g.
abstract java.io.InputStream	getInputStream() Gets a InputStream which reads the bytes of the body.
Entity	getParent() Gets the parent of this body.
void	setParent(Entity parent) Sets the parent of this body.
void	writeTo(java.io.OutputStream out) Writes this single body to the given stream.

Methods inherited from class java.lang.Object

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

Field Detail

parent

private Entity parent

DEFAULT_ENCODING_BUFFER_SIZE

static final int DEFAULT_ENCODING_BUFFER_SIZE

See Also:

Constant Field Values

Constructor Detail

SingleBody

protected SingleBody()

Sole constructor.

Method Detail

getParent

public Entity getParent()

Description copied from interface: Body

Gets the parent of this body.

Specified by:

getParent in interface Body

Returns:

the parent.

See Also:

Body.getParent()

setParent

public void setParent(Entity parent)

Description copied from interface: Body

Sets the parent of this body.

Specified by:

setParent in interface Body

Parameters:

parent - the parent.

See Also:

Body.setParent(org.apache.james.mime4j.dom.Entity)

getInputStream

public abstract java.io.InputStream getInputStream()
                                            throws java.io.IOException

Gets a InputStream which reads the bytes of the body.

Returns:

the stream, transfer decoded

Throws:

java.io.IOException - on I/O errors.

writeTo

public void writeTo(java.io.OutputStream out)
             throws java.io.IOException

Writes this single body to the given stream. The default implementation copies the input stream obtained by getInputStream() to the specified output stream. May be overwritten by a subclass to improve performance.

Parameters:

out - the stream to write to.

Throws:

java.io.IOException - in case of an I/O error

copy

public SingleBody copy()

Returns a copy of this SingleBody (optional operation).

The general contract of this method is as follows:

• Invoking getParent() on the copy returns null. That means that the copy is detached from the parent entity of this SingleBody. The copy may get attached to a different entity later on.
• The underlying content does not have to be copied. Instead it may be shared between multiple copies of a SingleBody.
• If the underlying content is shared by multiple copies the implementation has to make sure that the content gets deleted when the last copy gets disposed of (and not before that).

This implementation always throws an UnsupportedOperationException.

Returns:

a copy of this SingleBody.

Throws:

java.lang.UnsupportedOperationException - if the copy operation is not supported by this single body.

dispose

public void dispose()

Subclasses should override this method if they have allocated resources that need to be freed explicitly (e.g. cannot be simply reclaimed by the garbage collector). The default implementation of this method does nothing.

Specified by:

dispose in interface Disposable

See Also:

Disposable.dispose()

copy

private static void copy(java.io.InputStream in,
                         java.io.OutputStream out)
                  throws java.io.IOException

Copies the contents of one stream to the other.

Parameters:

in - not null

out - not null

Throws:

java.io.IOException