com.opengamma.strata.collect.named

Class ExtendedEnum.ExternalEnumNames<T extends Named>

java.lang.Object

com.opengamma.strata.collect.named.ExtendedEnum.ExternalEnumNames<T>

Type Parameters:

T - the type of the enum

Enclosing class:

ExtendedEnum<T extends Named>

public static final class ExtendedEnum.ExternalEnumNames<T extends Named>
extends Object

Maps names used by external systems to the standard name used here.

A frequent problem in parsing external file formats is converting enum values. This class provides a suitable mapping, allowing multiple external names to map to one standard name.

A single instance represents the mapping for a single external group. This allows the mapping for different groups to differ. For example, the mapping used by FpML may differ from that used by Bloomberg.

Instances of this class are configured via INI files and provided via ExtendedEnum.

Method Summary

Modifier and Type	Method and Description
ImmutableMap<String,String>	externalNames() Returns the complete map of external name to standard name.
T	lookup(String name) Looks up an instance by name.
<S extends T> S	lookup(String name, Class<S> subtype) Looks up an instance by name and type.
String	reverseLookup(T namedEnum) Looks up the external name given a standard enum instance.
String	toString()

Methods inherited from class java.lang.Object

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

Method Detail

lookup

public T lookup(String name)

Looks up an instance by name.

This finds the instance matching the specified name. Instances may have alternate names (aliases), thus the returned instance may have a name other than that requested.

Parameters:

name - the enum name to return

Returns:

the named enum

Throws:

IllegalArgumentException - if the name is not found

lookup

public <S extends T> S lookup(String name,
                              Class<S> subtype)

Looks up an instance by name and type.

This finds the instance matching the specified name, ensuring it is of the specified type. Instances may have alternate names (aliases), thus the returned instance may have a name other than that requested.

Type Parameters:

S - the enum subtype

Parameters:

subtype - the enum subtype to match

name - the enum name to return

Returns:

the named enum

Throws:

IllegalArgumentException - if the name is not found or has the wrong type

externalNames

public ImmutableMap<String,String> externalNames()

Returns the complete map of external name to standard name.

The map is keyed by the external name.

Returns:

the map of external names

reverseLookup

public String reverseLookup(T namedEnum)

Looks up the external name given a standard enum instance.

This searches the map of external names and returns the first matching entry that maps to the given standard name.

Parameters:

namedEnum - the named enum to find an external name for

Returns:

the external name

Throws:

IllegalArgumentException - if there is no external name

toString

public String toString()

Overrides:

toString in class Object