Function cp::GroupOfNext(sequentialResource, scheduledActivity, lastValue, absentValue)

# cp::GroupOfNext

The function cp::GroupOfNext refers to the group of the next activity in a sequence of activities. The group of an activity is specified in the group definition attribute of the sequential resource to ensure the sequencing. For a resource $$r$$, an activity $$a$$, groups $$l$$ and $$d$$, the function cp::GroupOfNext(r,a,l,d) returns

• $$d$$ if $$a$$ is absent,

• $$l$$ if $$a$$ is present and scheduled as the last activity on $$r$$, and

• $$GroupOf(r,n)$$ if $$a$$ is present and not scheduled as the last activity on $$r$$, and $$n$$ is the next activity of $$a$$ scheduled on $$r$$.

cp::GroupOfNext(
sequentialResource,  ! (input) an expression
scheduledActivity,   ! (input) an expression
lastValue,           ! (optional) an expression
absentValue          ! (optional) an expression
)


## Arguments

sequentialResource

An expression that results in a sequential resource.

scheduledActivity

An expression that results in an activity.

lastValue

An optional expression that results in a group. The default value of this expression is the last element in the group set of the sequential resource.

absentValue

An optional expression that results in a group. The default value of this expression is the last element in the group set of the sequential resource.

## Return Value

This function returns a group.