uk.org.ogsadai.client.toolkit.activity.transform
Class CSVProjection

java.lang.Object
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  +--uk.org.ogsadai.client.toolkit.activity.RequestComponent
        |
        +--uk.org.ogsadai.client.toolkit.activity.Activity
              |
              +--uk.org.ogsadai.client.toolkit.activity.transform.CSVProjection

public class CSVProjection

extends Activity

This is activty performs a projection of CSV values based on a column index.

The activity has one input - the CSV values - and one output the projected values.

Author:

The OGSA-DAI Project Team

Field Summary

private static java.lang.String	COPYRIGHT_NOTICE Copyright statement
private int	mColumnNo Column to project
private java.lang.String	mDelimiter The delimiter separating the CSV values.

Fields inherited from class uk.org.ogsadai.client.toolkit.activity.Activity

Fields inherited from class uk.org.ogsadai.client.toolkit.activity.RequestComponent

Constructor Summary

CSVProjection(ActivityOutput input, int columnNo)
Constructor.

CSVProjection(ActivityOutput input, int columnNo, java.lang.String delimiter)
Constructor.

Method Summary

protected java.lang.String	generateXML() Generates the XML representing the activity.
ActivityOutput	getOutput() Gets the activity output - the projected CSV values.
void	setInput(ActivityOutput input) Sets the input of this activity to be the output from another activity that will provide the data to be aggregated.

Methods inherited from class uk.org.ogsadai.client.toolkit.activity.Activity

addInput, addOutput, addOutputs, getDataResourceID, getInputParameters, getOutputParameters, getOutputs, replaceSpecialCharacters, setDataResourceID, setInput

Methods inherited from class uk.org.ogsadai.client.toolkit.activity.RequestComponent

getDataService, getName, getSession, setDataService, setSession

Methods inherited from class java.lang.Object

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

Field Detail

COPYRIGHT_NOTICE

private static final java.lang.String COPYRIGHT_NOTICE

Copyright statement

See Also:

Constant Field Values

mColumnNo

private int mColumnNo

Column to project

mDelimiter

private java.lang.String mDelimiter

The delimiter separating the CSV values. The default is a comma ,.

Constructor Detail

CSVProjection

public CSVProjection(ActivityOutput input,
                     int columnNo)

Constructor. The default delimiter - a comma , - is assumed to separate the CSV values.

setInput should be called to set the activity that provides input to this activity.

Parameters:

input - Output from another activity that will provide input to this activity.

Throws:

java.lang.IllegalArgumentException - If input is null or columnNo is <= 0.

CSVProjection

public CSVProjection(ActivityOutput input,
                     int columnNo,
                     java.lang.String delimiter)

Constructor. The default delimiter - a comma , - is assumed to separate the CSV values.

setInput should be called to set the activity that provides input to this activity.

Parameters:

input - Output from another activity that will provide input to this activity.

Throws:

java.lang.IllegalArgumentException - If input or delimiter is null or columNo is < 0.

Method Detail

setInput

public final void setInput(ActivityOutput input)

Sets the input of this activity to be the output from another activity that will provide the data to be aggregated.

Parameters:

input - Output from another activity.

Throws:

java.lang.IllegalArgumentException - If input is null.

getOutput

public ActivityOutput getOutput()

Gets the activity output - the projected CSV values.

Returns:

the activity output

generateXML

protected java.lang.String generateXML()

Description copied from class: RequestComponent

Generates the XML representing the activity. This XML can then be inserted into a perform document that is sent to a data service.

Specified by:

generateXML in class Activity

Returns:

the XML for the activity