IBM supplied transform types in the XML map editor

IBM BPM, V8.0.1, All platforms > Authoring services in Integration Designer > Defining and transforming data > Transforming data > Transforming data using XML maps > Functions and transforms
IBM supplied transform types in the XML map editor

The XML map editor provides a ready-made set of transforms, each of which performs some action on the input data.
These are the types of ready-made transforms that are available in the XML map editor.

XML map editor Transforms
Transform Description
Append Iterates over multiple inputs in the order specified to insert, remove and concatenate data.
Assign Sets a hard coded value in the output element. There is no input element.
Custom Allows you to enter your own code or to call reference code to be used in the transform. You can use your own XPath expressions, XSLT functions, or Java code. You can extend built-in transformation functions using custom XPath expressions and XSLT templates.
Concat Allows you to retrieve data from two or more inputs and combine the data into a single concatenated string.
Convert The Convert transform performs conversions between simple data types.
For each Iterates over a single input array element (either a simple type or a complex type). The output element must be an array of complex types. The for each transform contains a nested map where the mapping is performed when the transform executes.
Group Takes a single list as input and creates a number of lists. It is used to map a "flat" repeatable structure (an array) to a nested repeatable structure (a nested array) based on some criteria from the input structure.
If, Else if and Else If, Else if, and Else operate as a group of conditional transforms that allow you to control the flow of the mapping by setting conditions. The condition is applied to the input element of the conditional transform. If the condition is satisfied, the transform that is nested within the conditional transform is run.
Join Join multiple input arrays into a single output based on a common value, similar to the way tables are joined in database operations. The join transform replaces the merge transform that was available in previous releases.
Local map A transform with only one element as input (either a simple type or complex type) that can contain nested maps. The target can be either a single element or an array element but must be a complex type.
Lookup Retrieve values from a file based on a key from the input element. The output element is populated with the retrieved value. You can use several file formats to perform this type of lookup. The map editor provides lookups for some formats.
You can also contribute support for your own custom file types.
Merge See Join.
Move Copies data from the input element to the output element.
Normalize Removes white space such as spaces, tabs, and returns from the input string and moves the resulting normalized string to the output element.
For example, you can use the normalize transform to remove multiple occurrences of white space characters before doing a data comparison.
Submap Allows you to invoke another map within the current map. If you want to reuse an existing map, use the submap transform.
Substring Extracts information from the input string and moves the extracted string to the output element.

XML Transform: Append
Iterates over multiple inputs in the order specified to insert, remove and concatenate data.
XML transform: Assign
Sets a hard coded value in the output element. There is no input element.
XML transform: Concat
Allows you to retrieve data from two or more inputs and combine the data into a single concatenated string.
XML transform: Convert
The Convert transform performs conversions between simple data types.
XML transform: Custom
Allows you to enter your own code or to call reference code to be used in the transform. You can use your own XPath expressions, XSLT functions, or Java code. You can extend built-in transformation functions using custom XPath expressions and XSLT templates.
XML Transform: For each
Iterates over a single input array element (either a simple type or a complex type). The output element must be an array of complex types. The for each transform contains a nested map where the mapping is performed when the transform executes.
XML Transform: Group
Takes a single list as input and creates a number of lists. It is used to map a "flat" repeatable structure (an array) to a nested repeatable structure (a nested array) based on some criteria from the input structure.
XML transform: If, Else if, and Else transforms

If, Else if, and Else operate as a group of conditional transforms that allow you to control the flow of the mapping by setting conditions. The condition is applied to the input element of the conditional transform. If the condition is satisfied, the transform that is nested within the conditional transform is run.
XML Transform: Join
Join multiple input arrays into a single output based on a common value, similar to the way tables are joined in database operations. The join transform replaces the merge transform that was available in previous releases.
XML transform: Local map
A transform with only one element as input (either a simple type or complex type) that can contain nested maps. The target can be either a single element or an array element but must be a complex type.
XML transform: Lookup
Retrieve values from a file based on a key from the input element. The output element is populated with the retrieved value. You can use several file formats to perform this type of lookup. The map editor provides lookups for some formats.
You can also contribute support for your own custom file types.
XML transform: Move
Copies data from the input element to the output element.
XML transform: Normalize
Removes white space such as spaces, tabs, and returns from the input string and moves the resulting normalized string to the output element.
For example, you can use the normalize transform to remove multiple occurrences of white space characters before doing a data comparison.
XML transform: Submap
Allows you to invoke another map within the current map. If you want to reuse an existing map, use the submap transform.
XML transform: Substring
Extracts information from the input string and moves the extracted string to the output element.

Functions and transforms

Transform	Description
Append	Iterates over multiple inputs in the order specified to insert, remove and concatenate data.
Assign	Sets a hard coded value in the output element. There is no input element.
Custom	Allows you to enter your own code or to call reference code to be used in the transform. You can use your own XPath expressions, XSLT functions, or Java code. You can extend built-in transformation functions using custom XPath expressions and XSLT templates.
Concat	Allows you to retrieve data from two or more inputs and combine the data into a single concatenated string.
Convert	The Convert transform performs conversions between simple data types.
For each	Iterates over a single input array element (either a simple type or a complex type). The output element must be an array of complex types. The for each transform contains a nested map where the mapping is performed when the transform executes.
Group	Takes a single list as input and creates a number of lists. It is used to map a "flat" repeatable structure (an array) to a nested repeatable structure (a nested array) based on some criteria from the input structure.
If, Else if and Else	If, Else if, and Else operate as a group of conditional transforms that allow you to control the flow of the mapping by setting conditions. The condition is applied to the input element of the conditional transform. If the condition is satisfied, the transform that is nested within the conditional transform is run.
Join	Join multiple input arrays into a single output based on a common value, similar to the way tables are joined in database operations. The join transform replaces the merge transform that was available in previous releases.
Local map	A transform with only one element as input (either a simple type or complex type) that can contain nested maps. The target can be either a single element or an array element but must be a complex type.
Lookup	Retrieve values from a file based on a key from the input element. The output element is populated with the retrieved value. You can use several file formats to perform this type of lookup. The map editor provides lookups for some formats. You can also contribute support for your own custom file types.
Merge	See Join.
Move	Copies data from the input element to the output element.
Normalize	Removes white space such as spaces, tabs, and returns from the input string and moves the resulting normalized string to the output element. For example, you can use the normalize transform to remove multiple occurrences of white space characters before doing a data comparison.
Submap	Allows you to invoke another map within the current map. If you want to reuse an existing map, use the submap transform.
Substring	Extracts information from the input string and moves the extracted string to the output element.