초록 ▼

Impact analysis provides the ability to determine the objects that a particular object depends on or uses, as well as determine the objects that are dependent on or use a particular object. The term object may refer to tasks and/or object types, for example. Impact analysis is desirable for improvin

Impact analysis provides the ability to determine the objects that a particular object depends on or uses, as well as determine the objects that are dependent on or use a particular object. The term object may refer to tasks and/or object types, for example. Impact analysis is desirable for improving user productivity in large, complex documents because it facilitates determining how and where an object is used by other objects in the system, thereby potentially saving a great deal of manual work.

대표청구항 ▼

What is claimed: 1. A data transformation service, comprising: a central processing unit; and memory accessible to the central processing unit, the memory including: a data retrieval system to receive data from a source of one or more sources; a data transformation pipeline that constructs complex

What is claimed: 1. A data transformation service, comprising: a central processing unit; and memory accessible to the central processing unit, the memory including: a data retrieval system to receive data from a source of one or more sources; a data transformation pipeline that constructs complex end-to-end transformation functionality by pipelining data flowing from the one or more of the sources to one or more destinations, the data transformation pipeline comprising: a plurality of resource-using component objects; a graphical user interface which facilitates development of data transformation functionality, the graphical user interface representing a data transformation as a package represented as a series of interconnected nodes in a graph, wherein each node corresponds to a respective resource-using component object selected by the user from among the plurality of the resource-using components objects to be parts of the package, and when the parts of the package are executed the package transforms data according to an input/output functionality of the resource-using component objects which are included in the package; an interpreter that traverses the graph and translates the graph into a data flow execution plan and at least one work list, said at least one work list comprising at least one work item; and a pipeline engine to build the data flow execution based on the data flow execution plan, said data flow execution plan comprising a set of components instantiated from the plurality of the resource-using component objects; a reference tracker used by a pipeline component and operating in an object model, wherein the reference tracker: determines a relation between a resource-using component object and a resource; populates a tracking list, listing each resource that is to be tracked for an impact analysis, the tracking list including one or more resources used by the resource-using component object and one or more resources that the resource-using component object depends on; receives notification from the resource-using component object after populating the tracking list that the resource-using component object assumed a dependency on an additional resource; and adds a new entry to the tracking list specifying the dependency of the resource-using component object on the additional resource in response to receiving the notification from the resource-using component object; and a program module executable by the central processing unit to determine the impact analysis indicating an impact of a statement to change a resource on one or more resource-using component objects; a destination data storage system to store data, wherein the destination data storage system stores the impact analysis. 2. The data transformation service of claim 1, wherein the resource-using component is a task, and the resource is an object type. 3. The data transformation service of claim 2, wherein the object type is one of a read-access variable and a read/write-access variable. 4. The data transformation service of claim 1, wherein the tracking list exposes implicit relationships between objects. 5. A method of providing an impact analysis in a data transformation service, the method comprising: receiving data at a computing system comprising memory and a central processor from a source of one or more sources, wherein the computing system is executing the data transformation service; pipelining data flowing from the one or more sources to one or more destinations, the pipelining comprising: receiving from a user, via a graphical user interface provided by the computing system, a selection of one or more resource-using component objects for inclusion in a package, when the one or more resource-using component objects are executed the package transforms data according to an input/output functionality of the one or more resource-using components objects which are included in the package; displaying, via a monitor of the computer system, in response to the receiving of the selection, a graphical representation of a data transformation according to the package, wherein the package is represented as a series of interconnected nodes in a graph, wherein each node corresponds to a respective resource-using component object selected by the user to be part of the package; traversing the graph and translating the graph at the computing system into a data flow execution plan and at least one work list, said at least one work list comprising at least one work item; and building a data flow execution at the computing system based on the data flow execution plan, said data flow execution plan comprising a set of components instantiated from the one or more resource-using component objects; receiving a statement at the computing system to change a resource associated with a resource-using component object; generating a plurality of tracking lists, at the computing system, wherein each tracking list lists each resource that is to be tracked for an impact analysis and includes a list of a plurality of resources associated with the resource-using component object, the plurality of resources including one or more variables, and each tracking list is related to a different use of a specified resource by the resource-using component object; determining, at the computing system, the impact analysis indicating an impact of the statement of change on the resource-using component object; wherein the impact analysis determines resources and resource-using components that the resource-using component object depends on or uses; and storing the impact analysis and providing the impact analysis to the user. 6. The method of claim 5, wherein the steps of generating the plurality of tracking lists, receiving from a user, and determining the impact analysis take place within an object model. 7. The method of claim 5, wherein the resource is an object type. 8. The method of claim 7, wherein the object type is one of a read-access variable and a read/write-access variable. 9. The method of claim 5, wherein the tracking list exposes implicit relationships between objects. 10. A computer storage medium containing computer executable instructions executed by a central processor to perform a method for evaluating an impact of a data transformation in a data transformation service, the method comprising: receiving data from a source of one or more sources; pipelining data flowing from the one or more sources to one or more destinations, the pipelining comprising: receiving from a user, via a graphical user interface, a selection of one or more resource-using component objects for inclusion in a package, and when the one or more resource-using components are executed the package transforms data according to an input/output functionality of the one or more resource-using components objects which are included in the package; displaying, by a hardware monitor, in response to the receiving of the selection, a graphical representation of a data transformation according to the package, wherein the package is represented as a series of interconnected nodes in a graph, wherein each node corresponds to a respective resource-using component object selected by the user to be part of the package; traversing the graph and translating the graph into a data flow execution plan and at least one work list, said at least one work list comprising at least one work item; and building a data flow execution based on the data flow execution plan, said data flow execution plan comprising a set of components instantiated from the plurality of the one or more resource-using component objects; receiving a statement to change a resource associated with a resource-using component object; generating a plurality of tracking lists, wherein each tracking list lists each resource that is to be tracked for an impact analysis and includes a list of a plurality of resources associated with a resource-using component object, the plurality of resources including one or more variables, and each tracking list is related to a different use of a specified resource by the resource-using component object; determining, the impact analysis indicating an impact of the statement of change on the resource-using component object; wherein, the impact analysis determines resources and resource-using components that the resource-using component object depends on or uses; and storing the impact analysis and providing the impact analysis to the user.