net.cnri.repository.bdbje

Class BdbjeDataElement

java.lang.Object

net.cnri.repository.AbstractDataElement

net.cnri.repository.AbstractFileDataElement

net.cnri.repository.bdbje.BdbjeDataElement

All Implemented Interfaces:

DataElement, FileDataElement

public class BdbjeDataElement
extends AbstractFileDataElement
implements FileDataElement

Constructor Summary

Constructors

Constructor and Description
BdbjeDataElement(BdbjeDigitalObject dobj, com.sleepycat.je.Environment dbEnvironment, com.sleepycat.je.Database db, java.lang.String elName, byte[] elementKeyBytes)

Method Summary

Methods

Modifier and Type	Method and Description
void	delete() Deletes the data element from its digital object.
void	deleteAttribute(java.lang.String name) Deletes a particular attribute.
void	deleteAttributes(java.util.List<java.lang.String> names) Deletes multiple attributes.
java.lang.String	getAttribute(java.lang.String name) Returns the value for a particular attribute
DigitalObject	getDigitalObject() Returns the digital object of this data element.
java.io.File	getFile() Returns a file for the data of the data element.
java.lang.String	getName() Returns the name of this data element.
java.lang.String	getType() Returns the MIME type of the given data.
boolean	isKeyAttributeOfThisElement(byte[] keyBytes) Is the given key an attribute on this element.
CloseableIterator<java.util.Map.Entry<java.lang.String,java.lang.String>>	listAttributes() Returns a CloseableIterator view of the attributes of the data element.
void	setAttribute(java.lang.String name, java.lang.String value) Sets a particular attribute.
void	setAttributes(java.util.Map<java.lang.String,java.lang.String> attributes) Sets the value of multiple attributes.

Methods inherited from class net.cnri.repository.AbstractFileDataElement

getSize, read, write

Methods inherited from class net.cnri.repository.AbstractDataElement

getAttributes, read, 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.DataElement

getAttributes, getSize, read, read, setType, write, write

Constructor Detail

BdbjeDataElement

public BdbjeDataElement(BdbjeDigitalObject dobj,
                com.sleepycat.je.Environment dbEnvironment,
                com.sleepycat.je.Database db,
                java.lang.String elName,
                byte[] elementKeyBytes)
                 throws CreationException,
                        InternalException

Throws:

CreationException

InternalException

Method Detail

getDigitalObject

public DigitalObject getDigitalObject()

Description copied from interface: DataElement

Returns the digital object of this data element.

Specified by:

getDigitalObject in interface DataElement

Returns:

the digital object of this data element

getName

public java.lang.String getName()

Description copied from interface: DataElement

Returns the name of this data element.

Specified by:

getName in interface DataElement

Returns:

the name of this data element

delete

public void delete()
            throws RepositoryException

Description copied from interface: DataElement

Deletes the data element from its digital object.

Specified by:

delete in interface DataElement

Overrides:

delete in class AbstractDataElement

Throws:

RepositoryException

isKeyAttributeOfThisElement

public boolean isKeyAttributeOfThisElement(byte[] keyBytes)

Is the given key an attribute on this element. Returns true if the key starts with elementKeyBytesPlusDelimeter

listAttributes

public CloseableIterator<java.util.Map.Entry<java.lang.String,java.lang.String>> listAttributes()
                                                                                         throws RepositoryException

Description copied from interface: DataElement

Returns a CloseableIterator view of the attributes of the data element.

Specified by:

listAttributes in interface DataElement

Overrides:

listAttributes in class AbstractDataElement

Returns:

a CloseableIterator view of the attributes of the data element.

Throws:

RepositoryException

getAttribute

public java.lang.String getAttribute(java.lang.String name)
                              throws RepositoryException

Description copied from interface: DataElement

Returns the value for a particular attribute

Specified by:

getAttribute in interface DataElement

Overrides:

getAttribute in class AbstractDataElement

Parameters:

name - the attribute name

Returns:

the attribute value

Throws:

RepositoryException

setAttributes

public void setAttributes(java.util.Map<java.lang.String,java.lang.String> attributes)
                   throws RepositoryException

Description copied from interface: DataElement

Sets the value of multiple attributes. Attributes mapped to null will be deleted.

Specified by:

setAttributes in interface DataElement

Overrides:

setAttributes in class AbstractDataElement

Parameters:

attributes - the attributes to set, mapped to their new values

Throws:

RepositoryException

setAttribute

public void setAttribute(java.lang.String name,
                java.lang.String value)
                  throws RepositoryException

Description copied from interface: DataElement

Sets a particular attribute.

Specified by:

setAttribute in interface DataElement

Parameters:

name - the attribute name

value - the attribute value; if null, the attribute will be deleted.

Throws:

RepositoryException

deleteAttributes

public void deleteAttributes(java.util.List<java.lang.String> names)
                      throws RepositoryException

Description copied from interface: DataElement

Deletes multiple attributes.

Specified by:

deleteAttributes in interface DataElement

Overrides:

deleteAttributes in class AbstractDataElement

Parameters:

names - the names of the attributes to delete

Throws:

RepositoryException

deleteAttribute

public void deleteAttribute(java.lang.String name)
                     throws RepositoryException

Description copied from interface: DataElement

Deletes a particular attribute.

Specified by:

deleteAttribute in interface DataElement

Parameters:

name - the name of the attribute to delete

Throws:

RepositoryException

getType

public java.lang.String getType()
                         throws RepositoryException

Description copied from interface: DataElement

Returns the MIME type of the given data. Needed to give access to this data to other applications in the Android system.

Specified by:

getType in interface DataElement

Overrides:

getType in class AbstractDataElement

Returns:

the MIME type of this data

Throws:

RepositoryException

getFile

public java.io.File getFile()
                     throws RepositoryException

Description copied from interface: FileDataElement

Returns a file for the data of the data element. Reading or writing the file corresponds to reading and writing the data element.

Specified by:

getFile in interface FileDataElement

Returns:

A file for the data of the data element.

Throws:

RepositoryException