Loading application resources
Described is a technology by which application-related resources are differentiated from other types of resources via a uniform resource identifier (URI) associated with each resource. Application-related resources may include a resource embedded in the application program, at least one content file associated with (e.g., distributed with) the application program, or a resource located on a site from which the application program was deployed. Because of the URI, a creating/loading mechanism may be called using substantially similar calling code to that which is used to call the mechanism for loading another type of resource, thereby providing a consistent programming model. In one example, the URI includes a packaging scheme and authority, or a relative path which may be converted to an absolute URI. The mechanism creates an object corresponding to the application-related resource, and loads the resource or a stream of a compound resource.
1. In a computing environment, a method comprising:
providing a mechanism that receives requests for application-related resources and other resources via a common interface and method, in which the resource is identified by a parameter value that includes a scheme and an authority;
selecting a selected subcomponent of the mechanism from among a plurality of subcomponents based on the scheme, wherein the application-related resources correspond to a packaging scheme, and wherein selecting the selected subcomponent comprises differentiating the packaging scheme from at least one other scheme; and
invoking the selected subcomponent to load at least part of an application-related resource based on the authority, wherein invoking the selected subcomponent to load the resource comprises making a determination as to whether the application-related resource comprises: a resource embedded in an application program, at least one content file associated with the application program, or a resource located on a site from which the application program was deployed.
2. The method of claim 1 wherein selecting the selected subcomponent comprises differentiating the packaging scheme from an internet/intranet scheme and from a file scheme.
3. The method of claim 1 further comprising, invoking a resource part component to load at least part of the resource when the determination is that the application-related resource comprises a resource embedded in the application program, invoking a content file part component to load at least part of the resource when the determination is that the application-related resource comprises at least one content file associated with the application program, or invoking a site of origin file part component to load at least part of the resource when the determination is that the application-related resource comprises a resource located on a site from which the application program was deployed.
4. The method of claim 1 wherein the application-related resource corresponds to a compound document, and further comprising, calling the mechanism to load a selected stream from among a plurality of streams associated with the compound document.
5. The method of claim 1 wherein the scheme and authority correspond to an absolute uniform resource identifier, and further comprising, receiving a relative path provided by an application program calling the mechanism, and converting the relative path to the absolute uniform resource identifier based on information associated with the application program.
6. A computing system comprising:
a processor; and
one or more storage medium storing computer-executable instructions which, when executed by the processor, implement a method comprising:
providing a mechanism that receives requests for application-related resources and other resources via a common interface and method, in which the resource is identified by a parameter value that includes a scheme and an authority;
selecting a selected subcomponent of the mechanism from among a plurality of subcomponents based on the scheme; wherein the application-related resources correspond to a packaging scheme, and wherein selecting the selected subcomponent comprises differentiating the packaging scheme from at least one other scheme; and
invoking the selected subcomponent to load at least part of an application-related resource based on the authority, wherein invoking the selected subcomponent to load the resource comprises making a determination as to whether the application-related resource comprises: a resource embedded in an application program, at least one content file associated with the application program, or a resource located on a site from which the application program was deployed.
7. A storage device storing computer-executable instructions which, when executed by a processor, implement a method comprising:
providing a mechanism that receives requests for application-related resources and other resources via a common interface and method, in which the resource is identified by a parameter value that includes a scheme and an authority;
selecting a selected subcomponent of the mechanism from among a plurality of subcomponents based on the scheme; wherein the application-related resources correspond to a packaging scheme, and wherein selecting the selected subcomponent comprises differentiating the packaging scheme from at least one other scheme; and
invoking the selected subcomponent to load at least part of an application-related resource based on the authority, wherein invoking the selected subcomponent to load the resource comprises making a determination as to whether the application-related resource comprises: a resource embedded in an application program, at least one content file associated with the application program, or a resource located on a site from which the application program was deployed.