net.cnri.repository

Class AbstractFileDataElement

java.lang.Object

net.cnri.repository.AbstractDataElement

net.cnri.repository.AbstractFileDataElement

All Implemented Interfaces:

DataElement, FileDataElement

Direct Known Subclasses:

BdbjeDataElement, FilesystemDataElement, SQLiteDataElement

public abstract class AbstractFileDataElement
extends AbstractDataElement
implements FileDataElement

Constructor Summary

Constructors

Constructor and Description
AbstractFileDataElement()

Method Summary

Methods

Modifier and Type	Method and Description
long	getSize() Returns the number of bytes of data in this data element.
java.io.InputStream	read() Provides access to the data as an InputStream.
long	write(java.io.InputStream data, boolean append) Writes new data into the data element.

Methods inherited from class net.cnri.repository.AbstractDataElement

delete, deleteAttributes, getAttribute, getAttributes, getType, listAttributes, read, setAttributes, setType, write

Methods inherited from class java.lang.Object

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

Methods inherited from interface net.cnri.repository.FileDataElement

getFile

Methods inherited from interface net.cnri.repository.DataElement

delete, deleteAttribute, deleteAttributes, getAttribute, getAttributes, getDigitalObject, getName, getType, listAttributes, read, setAttribute, setAttributes, setType, write

Constructor Detail

AbstractFileDataElement

public AbstractFileDataElement()

Method Detail

read

public java.io.InputStream read()
                         throws RepositoryException

Description copied from interface: DataElement

Provides access to the data as an InputStream.

Specified by:

read in interface DataElement

Returns:

an InputStream providing access to the data

Throws:

RepositoryException

write

public long write(java.io.InputStream data,
         boolean append)
           throws java.io.IOException,
                  RepositoryException

Description copied from interface: DataElement

Writes new data into the data element.

Specified by:

write in interface DataElement

Parameters:

data - an InputStream streaming the new data

append - whether to append the new data to the existing data

Returns:

the number of bytes of data written

Throws:

java.io.IOException

RepositoryException

getSize

public long getSize()
             throws RepositoryException

Description copied from interface: DataElement

Returns the number of bytes of data in this data element.

Specified by:

getSize in interface DataElement

Returns:

the number of bytes of data in this data element

Throws:

RepositoryException