Altova MapForce 2027 Enterprise Edition

Navigation: Processing Components > Functions > Function Library Reference > core | aggregate functions

count

Home Prev Top Next

Returns the number of individual items making up the input sequence. The count of an empty set is zero.

Languages

Built-in, C++, C#, Java, XQuery, XSLT 1.0, XSLT 2.0, XSLT 3.0.

Note that this function has limited functionality in XSLT 1.0.

Parameters

Argument	Description
parent-context	Optional argument. Supplies the parent context. See also Example: Changing the Parent Context. Parent context is the context inherited from a parent node. It determines what source data and intermediate results are available to descendant nodes. Some data-processing components, including core aggregation functions, join components, and variables, provide a parent-context parameter that allows you to influence the inherited context and consequently change the output.
nodes/rows	This argument must be connected to the source item to be counted.

Argument

Description

parent-context

Optional argument. Supplies the parent context. See also Example: Changing the Parent Context.

Parent context is the context inherited from a parent node. It determines what source data and intermediate results are available to descendant nodes. Some data-processing components, including core aggregation functions, join components, and variables, provide a parent-context parameter that allows you to influence the inherited context and consequently change the output.

nodes/rows

This argument must be connected to the source item to be counted.

Example

See Example: Changing the Parent Context, Example: Counting Database Table Rows.