org.apache.james.mime4j.storage

Class CipherStorageProvider.CipherStorageOutputStream

java.lang.Object

java.io.OutputStream

org.apache.james.mime4j.storage.StorageOutputStream

org.apache.james.mime4j.storage.CipherStorageProvider.CipherStorageOutputStream

All Implemented Interfaces:

java.io.Closeable, java.io.Flushable, java.lang.AutoCloseable

Enclosing class:

CipherStorageProvider

private static final class CipherStorageProvider.CipherStorageOutputStream
extends StorageOutputStream

Field Summary

Fields

Modifier and Type	Field and Description
private java.lang.String	algorithm
private javax.crypto.CipherOutputStream	cipherOut
private javax.crypto.spec.SecretKeySpec	skeySpec
private StorageOutputStream	storageOut

Constructor Summary

Constructors

Constructor and Description
CipherStorageOutputStream(StorageOutputStream out, java.lang.String algorithm, javax.crypto.spec.SecretKeySpec skeySpec)

Method Summary

Modifier and Type	Method and Description
void	close() Closes this output stream.
protected Storage	toStorage0() Has to be implemented by a concrete subclass to create a Storage object from the bytes that have been written to this StorageOutputStream.
protected void	write0(byte[] buffer, int offset, int length) Has to implemented by a concrete subclass to write bytes from the given byte array to this StorageOutputStream.

Methods inherited from class org.apache.james.mime4j.storage.StorageOutputStream

toStorage, write, write, write

Methods inherited from class java.io.OutputStream

flush

Methods inherited from class java.lang.Object

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

Field Detail

storageOut

private final StorageOutputStream storageOut

algorithm

private final java.lang.String algorithm

skeySpec

private final javax.crypto.spec.SecretKeySpec skeySpec

cipherOut

private final javax.crypto.CipherOutputStream cipherOut

Constructor Detail

CipherStorageOutputStream

public CipherStorageOutputStream(StorageOutputStream out,
                                 java.lang.String algorithm,
                                 javax.crypto.spec.SecretKeySpec skeySpec)
                          throws java.io.IOException

Throws:

java.io.IOException

Method Detail

close

public void close()
           throws java.io.IOException

Description copied from class: StorageOutputStream

Closes this output stream. Subclasses that override this method have to invoke super.close().

This implementation never throws an IOException but a subclass might.

Specified by:

close in interface java.io.Closeable

Specified by:

close in interface java.lang.AutoCloseable

Overrides:

close in class StorageOutputStream

Throws:

java.io.IOException - if an I/O error occurs.

write0

protected void write0(byte[] buffer,
                      int offset,
                      int length)
               throws java.io.IOException

Description copied from class: StorageOutputStream

Has to implemented by a concrete subclass to write bytes from the given byte array to this StorageOutputStream. This method gets called by StorageOutputStream.write(int), StorageOutputStream.write(byte[]) and StorageOutputStream.write(byte[], int, int). All the required preconditions have already been checked by these methods, including the check if the output stream has already been closed.

Specified by:

write0 in class StorageOutputStream

Parameters:

buffer - buffer containing bytes to write.

offset - start offset in the buffer.

length - number of bytes to write.

Throws:

java.io.IOException - if an I/O error occurs.

toStorage0

protected Storage toStorage0()
                      throws java.io.IOException

Description copied from class: StorageOutputStream

Has to be implemented by a concrete subclass to create a Storage object from the bytes that have been written to this StorageOutputStream. This method gets called by StorageOutputStream.toStorage() after the preconditions have been checked. The implementation can also be sure that this methods gets invoked only once.

Specified by:

toStorage0 in class StorageOutputStream

Returns:

a Storage object as described above.

Throws:

java.io.IOException - if an I/O error occurs.