org.gcube.datatransformation.datatransformationlibrary.datahandlers.impl
Class REFDataBridge

java.lang.Object
  org.gcube.datatransformation.datatransformationlibrary.datahandlers.impl.REFDataBridge

All Implemented Interfaces:

ContentTypeDataSource, DataBridge, DataHandler, DataSink, DataSource

Direct Known Subclasses:

FilterDataBridge

public class REFDataBridge
extends Object
implements DataBridge

Author:

Dimitris Katris, NKUA DataBridge which keeps references to DataElements when they are appended into it.

Constructor Summary

REFDataBridge()

Method Summary

void	append(DataElement object) Appends the specified DataElement to this DataSink
void	close() Closes this DataHandler and releases any resources associated with it.
String	getOutput() Returns the output of the transformation.
boolean	hasNext() Returns true if the DataSource has more DataElements.
boolean	isClosed() Returns the closed state of the DataHandler.
DataElement	next() Returns the next element of the DataSource.
ContentType	nextContentType() Returns the next element's ContentType

Methods inherited from class java.lang.Object

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

Constructor Detail

REFDataBridge

public REFDataBridge()

Method Detail

append

public void append(DataElement object)

Description copied from interface: DataSink

Appends the specified DataElement to this DataSink

Specified by:

append in interface DataSink

Parameters:

object - DataElement to be appended to this DataSink

See Also:

DataSink.append(org.gcube.datatransformation.datatransformationlibrary.dataelements.DataElement)

close

public void close()

Description copied from interface: DataHandler

Closes this DataHandler and releases any resources associated with it.

Specified by:

close in interface DataHandler

See Also:

DataHandler.close()

hasNext

public boolean hasNext()

Description copied from interface: DataSource

Returns true if the DataSource has more DataElements.

Specified by:

hasNext in interface ContentTypeDataSource

Specified by:

hasNext in interface DataSource

Returns:

true if the DataSource has more elements.

See Also:

DataSource.hasNext()

next

public DataElement next()

Description copied from interface: DataSource

Returns the next element of the DataSource.

Specified by:

next in interface DataSource

Returns:

The the next DataElement of the DataSource.

See Also:

DataSource.next()

getOutput

public String getOutput()

Description copied from interface: DataSink

Returns the output of the transformation.

Specified by:

getOutput in interface DataSink

Returns:

The output of the transformationUnit.

See Also:

DataSink.getOutput()

isClosed

public boolean isClosed()

Description copied from interface: DataHandler

Returns the closed state of the DataHandler.

Specified by:

isClosed in interface DataHandler

Returns:

true if the DataHandler has been closed.

See Also:

DataHandler.isClosed()

nextContentType

public ContentType nextContentType()

Description copied from interface: ContentTypeDataSource

Returns the next element's ContentType

Specified by:

nextContentType in interface ContentTypeDataSource

Returns:

the next element's ContentType