Package org.incenp.linkml.core

Class ObjectCache

java.lang.Object

org.incenp.linkml.core.ObjectCache

public class ObjectCache
extends Object

Cache for LinkML objects.

Several LinkML objects (especially all definitions, e.g. class definitions, slot definitions, etc.) live in a global namespace where they are identified by the value of their identifier slot. This object represents that global namespace.

Constructor Summary

Constructors

Constructor	Description
ObjectCache()

Method Summary

Modifier and Type	Method	Description
<T> T	getObject(Class<T> type, String name)	Looks up for an object with the specified name.
<T> T	getObject(Class<T> type, String name, boolean create)	Looks up for an object with the specified name.
int	getSize()	Gets the number of objects in the cache.

Methods inherited from class java.lang.Object

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

Constructor Detail

ObjectCache

public ObjectCache()

Method Detail

getObject

public <T> T getObject(Class<T> type,
                       String name,
                       boolean create)
                throws LinkMLRuntimeException

Looks up for an object with the specified name.

Type Parameters:

T - The type of object to return.

Parameters:

type - The type of object to return.

name - The name of the object to return.

create - If true, the object will be created and added to the cache if it did not already exist.

Returns:

The object that was in the cache or have been newly created, or null if (1) the object that was in the cache was not of the expected type, or (2) the object was not in the cache and create is false.

Throws:

LinkMLRuntimeException - If the specified type of object is not one that can be cached (because it has no identifier slot), or if the object could not be created as needed.

getObject

public <T> T getObject(Class<T> type,
                       String name)
                throws LinkMLRuntimeException

Looks up for an object with the specified name.

Type Parameters:

T - The type of object to return.

Parameters:

type - The type of object to return.

name - The name of the object to return.

Returns:

The requested object, or null if the object was not in the cache or was not of the expected type.

Throws:

LinkMLRuntimeException - If the specified type of object is not one that can be cached, because it has no identifier slot.

getSize

public int getSize()

Gets the number of objects in the cache.