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The interface is specified by VitroFilters.java

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Ontology Reasoners: ABox and TBox

One of the principal strengths of RDF is that we can infer additional data from the data at hand. However, the logic involved can be complicated and time-consuming.

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The Search Indexer reacts to changes in the Content RDF, updating the search index to reflect those changes. Several types of logic are employed to determine which individuals are affected by the RDF changes, and how to build the search records for those individuals. Sometimes a single change requires that several search records be rebuilt.

Image Processor

When images are uploaded through the GUI, the Image Processor creates a thumbnail image, cropped and sized as the user requests. Currently, the image processor is based on the Java Advanced Imaging library.

Presentation

The presentation layer is where the web pages of VIVO are created. Most of the web pages are created using the Freemarker template engine. However, a number of pages are still created by JSPs.

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