Functions to Populate and Maintain the Cross-Reference and DVMs

Three types of functions are available to query and maintain the DVM and cross-reference data during the transformation process.

Term	Definition
Application Class methods	Application class methods are used in PeopleCode. These classes are typically used in cases in which the transformations are implemented as a PeopleCode step in an application engine program. These PeopleCode classes are used internally by the XPATH extension functions and by the web services.
XPath extension functions	XPath extension functions are used in the XSLT steps in application engine transform programs to invoke XSLT transforms using the TransformEx PeopleCode API.
Web services	Used by external systems to perform cross-reference lookups.

These functions enable you to query, manipulate, and delete cross-reference (XREF) and DVM data during transforms. The cardinality of the function is incorporated into the API naming convention. Each set of functions can be further broken down into three activities: lookup, populate, and delete.

The provided functions by class, activity, and form are:

Class	Activity	Form	Description
XREF	Populate	populateValue	Populate a transform item for a single valued element.
XREF	Populate	populateValue1M	Populate a transform element for a 1 to many mapping.
XREF	Populate	populateValueNVP	Populate a transform item for a multivalued element.
XREF	Delete	markForDelete	Mark for deletion a transform element for a single valued element. Items marked for delete can be reactivated later.
XREF	Delete	markForDeleteNVP	Mark for deletion a transform element for a multivalued element (name value pair).
XREF	Lookup	lookupValue	Look up a cross-reference value.
XREF	Lookup	lookupValue1M	Look up a cross-reference element for multiple values corresponding to a specific value in a reference element (1 to many).
XREF	Lookup	lookupValueNVP	Look up a cross-reference value for a multivalued element.
DVM	Lookup	lookupValue	Look up a domain value.
DVM	Lookup	lookupValue1M	Look up multiple domain values corresponding to a specific value in a reference element.
DVM	Lookup	lookupValueNVP	Look up a domain value for a multivalued element.
DVM	Lookup	lookup-dvm	Look up a domain value.