Building flexible relationships between reusable software components and data objects
At design-time, an owner data object and a container reference object are defined. At runtime, an instance of the defined owner data object an instance of defined relationship construction parameters are instantiated. At runtime, an instance of the defined container reference object and an instance of a defined data source object are instantiated using the instantiated relationship construction parameters. At runtime, an instance of a defined target data object is instantiated by calling an interface of the instantiated data source object. At runtime, the instance of the target data object is cached in the instance of the container reference object.
1. A computer-implemented method, comprising:
defining, at design-time, an owner data object and a container reference object;
instantiating, at runtime, an instance of the defined owner data object;
instantiating, at runtime an instance of defined relationship construction parameters;
instantiating, at runtime, an instance of the defined container reference object and an instance of a defined data source object using the instantiated relationship construction parameters, wherein the instantiating the defined data source object comprises:
using, by the instance of the defined container reference object at runtime, the relationship construction parameters to locate a data source class from a data source registry; and
instantiating the instance of a defined data source object using the located data source class;
instantiating, at runtime, an instance of a defined target data object by calling a defined interface of the instantiated data source object, wherein the defined interface comprises a list of standard collection interfaces and definitions of additional methods used to locate the instantiated data source object; and
caching, at runtime, the instance of the target data object in the instance of the container reference object.
2. The computer-implemented method of claim 1 , wherein the owner data object is an instantiated data object that acts as a parent data object and owns a relationship with a target data object.
3. The computer-implemented method of claim 2 , wherein the owner data object is generated by an application component.
4. The computer-implemented method of claim 1 , further comprising defining, at design-time, the relationship construction parameters and the data source object.
5. The computer-implemented method of claim 1 , further comprising passing the instantiated construction parameters from the instance of the owner data object to a container reference object class constructer.
6. The computer-implemented method of claim 1 , wherein the construction parameters are a target data object class and a defined filter.
7. A non-transitory, computer-readable medium storing one or more instructions executable by a computer system to perform operations comprising:
defining, at design-time, an owner data object and a container reference object;
instantiating, at runtime, an instance of the defined owner data object;
instantiating, at runtime an instance of defined relationship construction parameters;
instantiating, at runtime, an instance of the defined container reference object and an instance of a defined data source object using the instantiated relationship construction parameters, wherein the instantiating the defined data source object comprises:
using, by the instance of the defined container reference object at runtime, the relationship construction parameters to locate a data source class from a data source registry; and
instantiating the instance of a defined data source object using the located data source class;
instantiating, at runtime, an instance of a defined target data object by calling a defined interface of the instantiated data source object, wherein the defined interface comprises a list of standard collection interfaces and definitions of additional methods used to locate the instantiated data source object; and
caching, at runtime, the instance of the target data object in the instance of the container reference object.
8. The non-transitory, computer-readable medium of claim 7 , wherein the owner data object is an instantiated data object that acts as a parent data object and owns a relationship with a target data object.
9. The non-transitory, computer-readable medium of claim 8 , wherein the owner data object is generated by an application component.
10. The non-transitory, computer-readable medium of claim 7 , further comprising one or more instructions to define, at design-time, the relationship construction parameters and the data source object.
11. The non-transitory, computer-readable medium of claim 7 , further comprising one or more instructions to pass the instantiated construction parameters from the instance of the owner data object to a container reference object class constructer.
12. The non-transitory, computer-readable medium of claim 7 , wherein the construction parameters are a target data object class and a defined filter.
13. A computer-implemented system, comprising:
one or more computers; and
one or more computer memory devices interoperably coupled with the one or more computers and having tangible, non-transitory, machine-readable media storing instructions that, when executed by the one or more computers, perform operations comprising:
defining, at design-time, an owner data object and a container reference object;
instantiating, at runtime, an instance of the defined owner data object;
instantiating, at runtime an instance of defined relationship construction parameters;
instantiating, at runtime, an instance of the defined container reference object and an instance of a defined data source object using the instantiated relationship construction parameters, wherein the instantiating the defined data source object comprises:
using, by the instance of the defined container reference object at runtime, the relationship construction parameters to locate a data source class from a data source registry; and
instantiating the instance of a defined data source object using the located data source class;
instantiating, at runtime, an instance of a defined target data object by calling a defined interface of the instantiated data source object, wherein the defined interface comprises a list of standard collection interfaces and definitions of additional methods used to locate the instantiated data source object; and
caching, at runtime, the instance of the target data object in the instance of the container reference object.
14. The computer-implemented system of claim 13 , wherein the owner data object is an instantiated data object that acts as a parent data object, owns a relationship with a target data object, and is generated by an application component.
15. The computer-implemented system of claim 13 , further configured to define, at design-time, the relationship construction parameters and the data source object.
16. The computer-implemented system of claim 13 , further configured to pass the instantiated construction parameters from the instance of the owner data object to a container reference object class constructer.
17. The computer-implemented system of claim 13 , wherein the construction parameters are a target data object class and a defined filter.