Class MappingFunctionRegistry

java.lang.Object

org.openehealth.ipf.commons.map.MappingFunctionRegistry

All Implemented Interfaces:

MappingFunctions

public class MappingFunctionRegistry
extends Object
implements MappingFunctions

Named functions that an Unmatched.Computed fallback can refer to.

A mapping file names a function; the function itself is written, and unit-tested, in Java. That is the whole of what the Groovy DSL's arbitrary (ELSE) closures are needed for in practice — across all mapping files shipped with IPF exactly one fallback computes anything.

Functions get here either explicitly, through Mappings.Builder.function(String, Function), or from a MappingFunctionProvider that a module ships alongside a mapping file of its own.

Since:

6.0

Constructor Summary

Constructors

Constructor	Description
MappingFunctionRegistry()

Method Summary

Modifier and Type	Method	Description
void	clear()
boolean	contains(String name)
MappingFunctionRegistry	copy()
Optional<Function<String,String>>	lookup(String name)
MappingFunctionRegistry	register(String name, Function<String,String> function)	Registers a function under the given name, replacing any function registered before under that name.
MappingFunctionRegistry	registerAll(MappingFunctionRegistry other)	Registers every function of another registry, replacing any registered before under the same name.

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

MappingFunctionRegistry

public MappingFunctionRegistry()

Method Details

register

public MappingFunctionRegistry register(String name,
 Function<String,String> function)

Registers a function under the given name, replacing any function registered before under that name.

Parameters:

name - function name, as referred to by Unmatched.Computed.ref()

function - the function; it must tolerate a null argument

Returns:

this registry

registerAll

public MappingFunctionRegistry registerAll(MappingFunctionRegistry other)

Registers every function of another registry, replacing any registered before under the same name.

Parameters:

other - the registry to copy from

Returns:

this registry

copy

public MappingFunctionRegistry copy()

Returns:

a registry holding the same functions, to register into without affecting this one

lookup

public Optional<Function<String,String>> lookup(String name)

Specified by:

lookup in interface MappingFunctions

Parameters:

name - function name, as referred to by Unmatched.Computed.ref()

Returns:

the function registered under that name

contains

public boolean contains(String name)

Specified by:

contains in interface MappingFunctions

Parameters:

name - function name

Returns:

whether a function is registered under that name

clear

public void clear()