metaRangeProcess object

Description

Creates an metaRangeProcess object in form of an R6 class that stores and handles all the parts that define a process.

Public fields

• fun: <function> The processes function. This will be called when the process is executed.

Methods

Public methods

• metaRangeProcess$new()
• metaRangeProcess$get_PID()
• metaRangeProcess$get_name()
• metaRangeProcess$get_priority()
• metaRangeProcess$get_env_label()
• metaRangeProcess$print()

Method new()

Creates a new metaRangeProcess object

Usage

metaRangeProcess$new(
  process_name,
  id = "",
  process_fun,
  execution_priority,
  env,
  env_label = NULL
)

Arguments

• process_name: <string> name of the process.
• id: <string> optional ID of the process.
• process_fun: <function> The function to be called when the process is executed. It will be executed in the specified environment (see argument: env) and has access to all the variables in that environment. This function may not have any arguments, i.e. is.null(formals(process_fun)) must be TRUE.
• execution_priority: <integer> the priority of the process. The lower the number the earlier the process is executed (1 == highest priority). Note that the priority is only used to sort the processes in the priority queue. The actual execution order is determined by the order of the processes in the queue.
• env: <environment> the environment where the process should be executed.
• env_label: <string> optional name of the execution environment. Just used as a human readable label for debug purposes.

Returns

<metaRangeProcess> A metaRangeProcess object.

Examples

# Note: Only for illustration purposes. Use the add_process method of the
# simulation object to add processes to a simulation.
pr <- metaRangeProcess$new(
   process_name = "ecological_process",
   process_fun = function() {
      cat("Execute ecological process!")
   },
   execution_priority = 1L,
   env = new.env(),
   env_label = "a_species_name"
)
pr

Method get_PID()

get the process ID

Usage

metaRangeProcess$get_PID()

Returns

<string> The process ID

Examples

pr <- metaRangeProcess$new("A", "1", \() {}, 1, new.env())
pr$get_PID()

Method get_name()

get the process name

Usage

metaRangeProcess$get_name()

Returns

<string> The process name

Examples

pr <- metaRangeProcess$new("A", "1", \() {}, 1, new.env())
pr$get_name()

Method get_priority()

get the process execution priority

Usage

metaRangeProcess$get_priority()

Returns

<integer> The process execution priority

Examples

pr <- metaRangeProcess$new("A", "1", \() {}, 1, new.env())
pr$get_priority()

Method get_env_label()

get the name of the process execution environment

Usage

metaRangeProcess$get_env_label()

Returns

<string> The name of the process execution environment or NULL

Examples

pr <- metaRangeProcess$new("A", "1", \() {}, 1, new.env(), "human_readable_label")
pr$get_env_label()

Method print()

Prints information about the process to the console

Usage

metaRangeProcess$print()

Returns

<invisible self>

Examples

pr <- metaRangeProcess$new("A", "1", \() {}, 1, new.env())
pr$print()

Seealso

metaRangePriorityQueue

Value

<metaRangeProcess> A metaRangeProcess object.

Examples

## ------------------------------------------------
## Method `metaRangeProcess$new`
## ------------------------------------------------

# Note: Only for illustration purposes. Use the add_process method of the
# simulation object to add processes to a simulation.
pr <- metaRangeProcess$new(
   process_name = "ecological_process",
   process_fun = function() {
      cat("Execute ecological process!")
   },
   execution_priority = 1L,
   env = new.env(),
   env_label = "a_species_name"
)
pr

## ------------------------------------------------
## Method `metaRangeProcess$get_PID`
## ------------------------------------------------

pr <- metaRangeProcess$new("A", "1", \() {}, 1, new.env())
pr$get_PID()

## ------------------------------------------------
## Method `metaRangeProcess$get_name`
## ------------------------------------------------

pr <- metaRangeProcess$new("A", "1", \() {}, 1, new.env())
pr$get_name()

## ------------------------------------------------
## Method `metaRangeProcess$get_priority`
## ------------------------------------------------

pr <- metaRangeProcess$new("A", "1", \() {}, 1, new.env())
pr$get_priority()

## ------------------------------------------------
## Method `metaRangeProcess$get_env_label`
## ------------------------------------------------

pr <- metaRangeProcess$new("A", "1", \() {}, 1, new.env(), "human_readable_label")
pr$get_env_label()

## ------------------------------------------------
## Method `metaRangeProcess$print`
## ------------------------------------------------

pr <- metaRangeProcess$new("A", "1", \() {}, 1, new.env())
pr$print()