net.cnri.repository.memory

Class MemoryDataElement

java.lang.Object

net.cnri.repository.AbstractDataElement

net.cnri.repository.memory.MemoryDataElement

All Implemented Interfaces:

DataElement

public class MemoryDataElement
extends AbstractDataElement
implements DataElement

Constructor Summary

Constructors

Constructor and Description
MemoryDataElement(MemoryDigitalObject dobj, java.lang.String name)

Method Summary

Methods

Modifier and Type	Method and Description
void	delete() Deletes the data element from its digital object.
void	deleteAttribute(java.lang.String aname) Deletes a particular attribute.
void	deleteAttributes(java.util.List<java.lang.String> names) Deletes multiple attributes.
java.lang.String	getAttribute(java.lang.String aname) Returns the value for a particular attribute
java.util.Map<java.lang.String,java.lang.String>	getAttributes() Returns a Map view of the attributes of the data element.
DigitalObject	getDigitalObject() Returns the digital object of this data element.
java.lang.String	getName() Returns the name of this data element.
long	getSize() Returns the number of bytes of data in this data element.
java.lang.String	getType() Returns the MIME type of the given data.
CloseableIterator<java.util.Map.Entry<java.lang.String,java.lang.String>>	listAttributes() Returns a CloseableIterator view of the attributes of the data element.
java.io.InputStream	read() Provides access to the data as an InputStream.
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.
void	setType(java.lang.String type) Sets the MIME type of the given data.
long	write(java.io.InputStream in, boolean append) Writes new data into the data element.

Methods inherited from class net.cnri.repository.AbstractDataElement

read, 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

read, write

Constructor Detail

MemoryDataElement

public MemoryDataElement(MemoryDigitalObject dobj,
                 java.lang.String name)

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()

Description copied from interface: DataElement

Deletes the data element from its digital object.

Specified by:

delete in interface DataElement

Overrides:

delete in class AbstractDataElement

getAttributes

public java.util.Map<java.lang.String,java.lang.String> getAttributes()

Description copied from interface: DataElement

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

Specified by:

getAttributes in interface DataElement

Overrides:

getAttributes in class AbstractDataElement

Returns:

a Map view of the attributes of the data element.

listAttributes

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

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.

getAttribute

public java.lang.String getAttribute(java.lang.String aname)

Description copied from interface: DataElement

Returns the value for a particular attribute

Specified by:

getAttribute in interface DataElement

Overrides:

getAttribute in class AbstractDataElement

Parameters:

aname - the attribute name

Returns:

the attribute value

setAttributes

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

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

setAttribute

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

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.

deleteAttributes

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

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

deleteAttribute

public void deleteAttribute(java.lang.String aname)

Description copied from interface: DataElement

Deletes a particular attribute.

Specified by:

deleteAttribute in interface DataElement

Parameters:

aname - the name of the attribute to delete

getType

public java.lang.String getType()

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

setType

public void setType(java.lang.String type)

Description copied from interface: DataElement

Sets the MIME type of the given data.

Specified by:

setType in interface DataElement

Overrides:

setType in class AbstractDataElement

Parameters:

type - the new MIME type

read

public java.io.InputStream read()

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

write

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

Description copied from interface: DataElement

Writes new data into the data element.

Specified by:

write in interface DataElement

Parameters:

in - 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

getSize

public long getSize()

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