org.gcube.datatransformation.datatransformationlibrary.programs

Class Stream2StreamProgram

java.lang.Object

org.gcube.datatransformation.datatransformationlibrary.programs.Elm2ElmProgram

org.gcube.datatransformation.datatransformationlibrary.programs.Stream2StreamProgram

All Implemented Interfaces:

Program

Direct Known Subclasses:

P2PProgram

public abstract class Stream2StreamProgram
extends Elm2ElmProgram

Author:

Dimitris Katris, NKUA

Abstract helper class that implements the Program interface.

Each class that extends the Stream2StreamProgram shall implement the transformStream(InputStream, ContentType, List, ContentType) method which takes as input an InputStream and returns an InputStream of the transformed content.

Constructor Summary

Constructors

Constructor and Description
Stream2StreamProgram()

Method Summary

Modifier and Type	Method and Description
DataElement	transformDataElement(DataElement sourceDataElement, List<Parameter> programParameters, ContentType targetContentType) Transforms the sourceDataElement to the targetContentType and returns the transformed DataElement.
abstract InputStream	transformStream(InputStream content, ContentType sourceContentType, List<Parameter> programParameters, ContentType targetContentType) Transforms the content to the targetContentType and returns the transformed content as a stream.

Methods inherited from class org.gcube.datatransformation.datatransformationlibrary.programs.Elm2ElmProgram

transform

Methods inherited from class java.lang.Object

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

Constructor Detail

Stream2StreamProgram

public Stream2StreamProgram()

Method Detail

transformDataElement

public DataElement transformDataElement(DataElement sourceDataElement,
                                        List<Parameter> programParameters,
                                        ContentType targetContentType)
                                 throws Exception

Description copied from class: Elm2ElmProgram

Transforms the sourceDataElement to the targetContentType and returns the transformed DataElement.

Specified by:

transformDataElement in class Elm2ElmProgram

Parameters:

sourceDataElement - The source DataElement.

programParameters - The parameters of the Program.

targetContentType - The ContentType in which the DataElement will be transformed.

Returns:

The transformed DataElement.

Throws:

Exception - If the Program is not capable to transform DataElements.

See Also:

Elm2ElmProgram.transformDataElement(org.gcube.datatransformation.datatransformationlibrary.dataelements.DataElement, java.util.List, org.gcube.datatransformation.datatransformationlibrary.model.ContentType)

transformStream

public abstract InputStream transformStream(InputStream content,
                                            ContentType sourceContentType,
                                            List<Parameter> programParameters,
                                            ContentType targetContentType)
                                     throws Exception

Transforms the content to the targetContentType and returns the transformed content as a stream.

Parameters:

content - The content of the source DataElement.

sourceContentType - The ContentType of the source DataElement.

programParameters - The parameters of the Program.

targetContentType - The ContentType in which the DataElement will be transformed.

Returns:

The transformed content

Throws:

Exception - If the Program is not capable to transform DataElements.