getFirstElementDFS

Created: 2012-01-13 19:25:22 Last updated: 2012-02-13 20:59:49

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Returns the first element of a nested list using depth first search. The maximum depth of the input is set to 2. You can savely increase this by increasing the depth of the workflow input port and the beanshell input port. Taverna will wrap the input into a list with correct depth. However this will create a little overhead.

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Inputs (1)

Name	Description
input

Processors (1)

Name	Type	Description
getFirstElementDFS	beanshell	Script getFirstElementDFS(input) { if (!(input instanceof Collection)) { return input; } for (i = input.iterator(); i.hasNext();) { element = i.next(); subElement = getFirstElementDFS(element); if (null != subElement) { return subElement; } } return null; } firstElement = getFirstElementDFS(input);

Beanshells (1)

Name	Description	Inputs	Outputs
getFirstElementDFS		input	firstElement

Outputs (1)

Name	Description
firstElement

Datalinks (2)

Source	Sink
input	getFirstElementDFS:input
getFirstElementDFS:firstElement	firstElement

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Taverna 2

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Markus Plangg

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1687 viewings

1057 downloads

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Version History

In chronological order:

Get first element using DFS

Created by Markus Plangg on Friday 13 January 2012 19:25:22 (UTC)
getFirstElementDFS

Created by Markus Plangg on Monday 16 January 2012 00:09:50 (UTC)

Last edited by Markus Plangg on Monday 13 February 2012 20:59:49 (UTC)

Revision comment:

Updated beanshell service inputport to byte array so it is not automatically converted to string.