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Taak scripts may invoke user defined functions or user-defined functions. Taak has built-in functions for manipulating strings, lists, and JDOM objects.

Servlet Functions

A Taak script may redirect or forward a request to another URL using the redirect or forward functions.

Function	Description	Examples
redirect	Redirect the request to another URL.	redirect("http://www.aol.com");
forward	Forward the request to another URL.	forward("foo.htm");

JDOM Functions

A taakScript execution context may contain a JDOM document. The document is defined as the variable DOCUMENT. A JDOM document contains Elements. An Element has attributes, text, and may contain children Elements. The attribute most often used is the id attribute. The id attribute is used to identify Elements that the script will manipulate. The ids are unique within the document. No two ids in a document can be the same. An easy way to get the Element with a specific id is to use the function getElementById() and pass the DOCUMENT and id as arguments. The other attribute that has a special use is the class attribute. All elements with a class attribute that contains the word "mockup" are automatically removed before processing is done. The specific mockup class can be changed in the taak-config.xml file.

Full list of JDOM functions:

Function	Description	Examples
getRootElement	Returns the root element of a document.	getRootElement(DOCUMENT);
getElementById	Returns a descendant element with the specified id. The first argument may be a document or an element.	getElementById(DOCUMENT, "x"); getElementById(ele, "x");
getElementByName	Returns the first descendant element if textual order with the specified tag name.	getElementByName(DOCUMENT, "x");
getElementByIndex	Returns the nth child indexed from 0 of an element.	getElementByIndex(e, 0);
getParent	Returns the parent element.	getParent(e);
cloneElement	Return a deep clone of an element but do not attach the clone to the parent of the original.	cloneElement(e);
copyElement	Return a deep clone of an element and add it to the parent of the original.	copyElement(e);
removeElement	Remove an element and all its descendants.	removeElement(e);
removeChildren	Remove all descendants of an element.	removeChildren(e);
getText	Returns the text of an element.	getText(e);
setText	Set the text of an element.	setText(e, "foobar");
getAttribute	Returns the attribute value of an element.	getAttribute(e, "href");
setAttribute	Sets the attribute value of an element.	setAttribute(e, "href", "foo.htm");
removeAttribute	Remove the attribute of an element.	domRemoveAttribute(e, "href");
removeIds	Remove all id attributes from an element and its descendants.	domRemoveIds(e);