Visualization for splitting an application into modules

An apparatus, comprising:

• at least one processor;
• and
• a computer readable storage medium having computer readable program code embodied therewith and executable by the at least one processor, the computer readable program code comprising:
• computer readable program code to create a data schema in a common data model from an analysis of an application;
• computer readable program code to, based on the data schema, create one or more nodes from the application by an unsupervised clustering algorithm, wherein the one or more nodes are portions of the application;
• computer readable program code to, for each of a plurality of defined constraints and splitting techniques, iteratively generating one or more clusters from the one or more nodes, wherein each cluster is a possible set of modules, and wherein a constraint includes a resource usage requirement, a runtime requirement, a maximum class or object requirement, a maximum module size;
• computer readable program code to display on a graphical user interface on a display device, a first visualization layer corresponding to a first possible set of modules, accompanied by an input area, wherein the input area accepts at least one checkbox selection, each checkbox selection corresponding to a splitting technique;
• computer readable program code to iteratively display within the graphical user interface on the display device, one or more subsequent visualization layers of the possible set of modules, wherein each subsequently displayed visualization layer overlays a previously displayed visualization layer, leaving each previously displayed visualization layer having a selected checkbox selection visible;
• and
• computer readable program code to split the application into one of the different possible sets of modules, responsive to receiving user input within the interactive overlay visualization selecting one of the different layers as a final module set for splitting the application.

A computer program product, comprising:

• a non-transitory tangible computer readable storage medium having computer readable program code embodied therewith, the computer readable program code executable by a processor and comprising:
• computer readable program code to create a data schema in a common data model from an analysis of an application;
• computer readable program code to, based on the data schema, creating one or more nodes from the application by an unsupervised clustering algorithm, wherein the one or more nodes are portions of the application;
• computer readable program code to for each of a plurality of defined constraints and splitting techniques, iteratively generate one or more clusters from the one or more nodes, wherein each cluster is a possible set of modules, and wherein a constraint includes a resource usage requirement, a runtime requirement, a maximum class or object requirement, a maximum module size;
• computer readable program code to display on a graphical user interface on a display device, a first visualization layer corresponding to a first possible set of modules, accompanied by an input area, wherein the input area accepts at least one checkbox selection, each checkbox selection corresponding to a splitting technique;
• computer readable program code to iteratively display within the graphical user interface on the display device, one or more subsequent visualization layers of the possible set of modules, wherein each subsequently displayed visualization layer overlays a previously displayed visualization layer, leaving each previously displayed visualization layer having a selected checkbox selection visible;
• and
• computer code to split the application into one of the different possible sets of modules, responsive to receiving user input within the interactive overlay visualization selecting one of the different layers as a final module set for splitting the application.