org.gcube.datatransformation.datatransformationlibrary.dataelements
Class DataElement

java.lang.Object
  org.gcube.datatransformation.datatransformationlibrary.dataelements.DataElement

Direct Known Subclasses:

CompoundDataElement, DataElementImpl, LocalFileDataElement, StrDataElement

public abstract class DataElement
extends Object

Author:

Dimitris Katris, NKUA This class provides the base implementation of each DataElement.

Field Summary

protected HashMap<String,String>

attributes The (name, value) attribute pairs

Constructor Summary

DataElement()

Method Summary

void	deleteAttribute(String attrName) Deletes an attribute of the DataElement.
abstract void	destroy()
Map<String,String>	getAllAttributes() Returns a Map which contains all the attributes of the DataElement.
String	getAttributeValue(String attrName) Returns the value of the attribute with name attrName.
abstract InputStream	getContent() Abstract method which returns the content of the DataElement in a stream.
ContentType	getContentType() Returns the ContentType of the DataElement.
String	getId() Returns the id of the DataElement.
void	setAttribute(String attrName, String attrVal) Puts an attribute in the DataElement.
void	setContentType(ContentType contentType) Sets the ContentType of the DataElement.
void	setId(String id) Sets the id of the DataElement.

Methods inherited from class java.lang.Object

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

Field Detail

attributes

protected HashMap<String,String> attributes

The (name, value) attribute pairs

Constructor Detail

DataElement

public DataElement()

Method Detail

getId

public String getId()

Returns the id of the DataElement.

Returns:

The id of the DataElement.

setId

public void setId(String id)

Sets the id of the DataElement.

Parameters:

id - the id of the DataElement.

getContentType

public ContentType getContentType()

Returns the ContentType of the DataElement.

Returns:

The ContentType of the DataElement.

setContentType

public void setContentType(ContentType contentType)

Sets the ContentType of the DataElement.

Parameters:

contentType - The ContentType of the DataElement.

setAttribute

public void setAttribute(String attrName,
                         String attrVal)

Puts an attribute in the DataElement.

Parameters:

attrName - The name of the attribute.

attrVal - The value of the attribute.

deleteAttribute

public void deleteAttribute(String attrName)

Deletes an attribute of the DataElement.

Parameters:

attrName - The name of the attribute which will be deleted.

getAttributeValue

public String getAttributeValue(String attrName)

Returns the value of the attribute with name attrName.

Parameters:

attrName - The name of the attribute whose value will be returned.

Returns:

The value of the attribute.

getAllAttributes

public Map<String,String> getAllAttributes()

Returns a Map which contains all the attributes of the DataElement.

Returns:

The Map with all the attributes of the DataElement.

getContent

public abstract InputStream getContent()

Abstract method which returns the content of the DataElement in a stream.

Returns:

The content of the DataElement.

destroy

public abstract void destroy()