Runtime Object Composition
Objects in computing environments are often instantiated based on a class definition that is statically declared at design time, but such instantiation limits the flexibility of the objects so created. Objects may also be composed at runtime through a series of invocations of a reflection programming interface, but reflection techniques may be computationally expensive, and the generation of many objects at runtime based on a single object definition may redundantly invoke the reflection programming interface. As provided herein, when requested to generate a new object at runtime based on an object definition, the host environment may instead automatically generate a factory method (via reflection) using the object definition, and may invoke the factory method to compose the object. The factory method may also be cached with the object definition to facilitate the composing of additional objects based on the same object definition, thereby economizing computing resources and improving system performance.
1 . A computer-implemented method of composing an object at runtime according to an object definition, the method comprising:
generating a factory method configured to compose the object according to the object definition, and
invoking the factory method to compose the object.
2 . The method of claim 1 :
the object definition specified in an application managed by a runtime component, and
the method invoked at runtime by the runtime component.
3 . The method of claim 1 , the object definition specifying at least one of:
at least one constant,
at least one primitive data type,
at least one constructor method,
at least one invokable method,
at least one interface, and
at least one event.
4 . The method of claim 1 :
the object definition including at least one constructor method, and
the factory method configured to invoke the constructor method.
5 . The method of claim 1 :
the object definition specifying a base class from which the object is derived, and
the factory method configured to:
compose an instance of the base class, and
supplement the instance of the base class according to the object definition.
6 . The method of claim 1 :
the object definition specifying at least one contained object, and
the factory method configured to:
compose the at least one contained object, and
add the at least one contained object to the object.
7 . The method of claim 1 :
the object definition comprising at least one event handler method of the object to handle at least one event, and
the factory method configured, after invoking the factory method to compose the object, to subscribe the at least one event handler method to the at least one event.
8 . The method of claim 1 , the generating comprising:
generating a source code module comprising a factory method configured to compose the object according to the object definition, and
invoking a compiler to at least partially compile the source code module.
9 . The method of claim 1 , the generating comprising: emitting at least one at least partially compiled instruction configured to compose the object according to the object definition.
10 . The method of claim 1 :
the method comprising: upon generating the factory method, storing the object definition associated with the factory method in a factory method cache; and
the generating comprising:
searching the factory method cache for a cached object definition matching the object definition; and
upon finding a cached object definition matching the object definition in the factory method cache, retrieving from the factory method cache the factory method associated with the cached object definition.
11 . A system configured to composing an object at runtime according to an object definition, the system comprising:
a factory method generating component configured to generate a factory method configured to compose the object according to the object definition, and
a factory method invoking component configured to invoke the factory method to compose the object.
12 . The system of claim 11 :
the object definition specified in an application managed by a runtime component, and
the runtime component comprising the factory method generating component and the factory method configuring component.
13 . The system of claim 11 :
the object definition specifying at least one constructor method, and
the factory method generating component configured to generate a factory method configured to invoke the constructor method.
14 . The system of claim 11 :
the object definition specifying a base class from which the object is derived, and
the factory method generating component configured to generate a factory method configured to:
compose an instance of the base class, and
supplement the instance of the base class according to the object definition.
15 . The system of claim 1 1 :
the object definition specifying at least one contained object, and
the factory method generating component configured to generate a factory method configured to:
compose the at least one contained object, and
add the at least one contained object to the object.
16 . The system of claim 11 :
the object definition comprising at least one event handler method of the object to handle at least one event, and
the factory method generating component configured to generate a factory method configured to subscribe the at least one event handler method to the at least one event.
17 . The system of claim 11 , the factory method generating component configured to
generate a source code module comprising a factory method configured to compose the object according to the object definition, and
invoke a compiler to at least partially compile the source code module.
18 . The system of claim 11 , the factory method generating component configured to emit at least one at least partially compiled instruction configured to compose the object according to the object definition.
19 . The system of claim 11 :
the system comprising:
a factory method cache configured to store an object definition associated with a factory method, and
a factory method caching component configured to store the object definition in the factory method cache with the factory method; and
the factory method generating component configured to:
search the factory method cache for a cached object definition matching the object definition; and
upon finding a cached object definition matching the object definition in the factory method cache, retrieve from the factory method: cache the factory method associated with the cached object definition.
20 . A computer-implemented method invoked at runtime by a runtime component to compose an object according to an object definition specified in an application managed by the runtime component, the runtime component further comprising a factory method cache configured to store an object definition associated with a factory method, and the method comprising:
searching the factory method cache for a cached object definition matching the object definition;
upon finding a cached object definition matching the object definition in the factory method cache, retrieving from the factory method cache the factory method associated with the cached object definition;
upon failing to find a cached object definition matching the object definition in the factory method cache:
generating a factory method comprising a set of at least partially compiled instructions configured to compose the object according to the object definition, and
storing the object definition with the factory method in a factory method cache;
invoking the factory method to compose the object; and
subscribing at least zero event handler methods of the object to at least zero events according to the object definition.