Package com.oss.storage

Class OSSObjectStorage

java.lang.Object

com.oss.storage.OSSFileStorage

com.oss.storage.OSSObjectStorage

All Implemented Interfaces:

ObjectStorage, Storage, Serializable, Cloneable

public class OSSObjectStorage
extends OSSFileStorage
implements ObjectStorage

Implements external storage for the data whose contents is an array of Objects.

Since:

ASN.1/Java 1.4-beta A

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
OSSObjectStorage()	The default constructor.
OSSObjectStorage(File file)	Create an OSSObjectStorage object and associate it with an existing disk file.

Method Summary

Modifier and Type	Method	Description
int	getKind()	Identify the kind of storage this object implements.
ObjectReader	getReader()	Return an ObjectReader to read the contents of the storage.
ObjectWriter	getWriter(boolean append)	Return an ObjectWriter to modify the contents of the storage.

Methods inherited from class com.oss.storage.OSSFileStorage

canRead, canWrite, clone, copy, deallocate, getSize, reset, toString

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface com.oss.asn1.Storage

canRead, canWrite, copy, deallocate, getSize, reset

Constructor Details

OSSObjectStorage

public OSSObjectStorage()

The default constructor. Bypasses to the default constructor of the superclass, that creates a temporary file and associates the file with this storage object.

OSSObjectStorage

public OSSObjectStorage(File file)

Create an OSSObjectStorage object and associate it with an existing disk file.

Parameters:

file - disk file to associate with this storage object.

Throws:

StorageException - if the specified file does not exist or is not an ordinary (normal) file.

Method Details

getKind

public int getKind()

Identify the kind of storage this object implements.

Specified by:

getKind in interface Storage

Returns:

StorageManager.STORAGE_OBJECTS.

getReader

public ObjectReader getReader()
                       throws StorageException

Return an ObjectReader to read the contents of the storage.

Specified by:

getReader in interface ObjectStorage

Returns:

an ObjectReader.

Throws:

StorageException - if read access to the contents was denied.

getWriter

public ObjectWriter getWriter(boolean append)
                       throws StorageException

Return an ObjectWriter to modify the contents of the storage. This implementation of the ObjectStorage does not support the append operation. If the append parameter is true a StorageException is thrown.

Specified by:

getWriter in interface ObjectStorage

Parameters:

append - this parameter must be set to false.

Returns:

an ObjectWriter.

Throws:

StorageException - if write access to the contents was denied or append mode has been requested by the caller.