Difference between revisions of "DocumentGranule Code"
From DocDataFlow
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* <code>documentGranule.getFile()</code>: returns the associated file on disk (if any). | * <code>documentGranule.getFile()</code>: returns the associated file on disk (if any). | ||
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| + | * <code>documentGranule.isValid()</code>: verifies whether the granule is still valid. In some cases, processing affects the validity of the document granule; if the document granule refers to an underlying document data that's become invalid, this method will reflect that. In that case the granule will need to be dropped, and a new granule constructed to 'wrap' the replacement document. | ||
Latest revision as of 02:15, 30 December 2013
The DocumentGranule class is derived from the Granule class.
It has a class identifier of com.rorohiko.granule.document.
The following methods are provided:
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documentGranule.getAppContext(): get the current application context for this document granule. In the first version of Crawler, this is a single global context, shared by the whole Crawler session, but in the future, Crawler might support multiple concurrent applications during a single conversion session, in which case the appContext can vary between document granules.
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documentGranule.getDocumentGranule(): returns the 'owning document' for this granule. Because the DocumentGranule represents the document it is kind of a do-nothing: it returns the granule itself. This same method is available for all document-derived granules, and it is available here too for reasons of symmetry: if you have a document-derived granule, calling getDocumentGranule() will give you the 'owning document'.
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documentGranule.getFile(): returns the associated file on disk (if any).
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documentGranule.isValid(): verifies whether the granule is still valid. In some cases, processing affects the validity of the document granule; if the document granule refers to an underlying document data that's become invalid, this method will reflect that. In that case the granule will need to be dropped, and a new granule constructed to 'wrap' the replacement document.
