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a/src/index/fetcher.h |
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b/src/index/fetcher.h |
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/**
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/**
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* Generic interface to retrieve the data for a document designated by
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* Generic interface to retrieve the data for a document designated by
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* its index data (udi/ipath/url). This is used to retrieve the data
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* its index data (udi/ipath/url). This is used to retrieve the data
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* for previewing. The actual implementation is specific to the kind
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* for previewing. The actual implementation is specific to the kind
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* of backend (file system, beagle cache, others?...), and the
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* of backend (file system, web cache, others?...), and the
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* implementation may of course may share code with the indexing-time
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* implementation may of course share code with the indexing-time
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* functions from the specific backend.
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* functions from the specific backend.
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*
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*
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* This is used to give access the raw document container (either as a
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* This normally gives access the raw document container (either as a
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* file or as a memory block). The Internfile code will then further
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* file or as a memory block). The Internfile code will then further
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* process it to get to the actual document, especially if
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* process it to get to the actual document, especially if
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* de-embedding is involved.
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* de-embedding is involved.
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*
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* The DATADIRECT document kind, which holds final extracted data, is only
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* returned when using an external indexer (only the python demo sample at
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* this point), in which case the whole extraction is performed by the
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* external code.
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*/
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*/
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class DocFetcher {
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class DocFetcher {
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public:
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public:
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/** A RawDoc is the data for a document-holding entity either as a
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/** A RawDoc is the data for a document-holding entity either as a
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memory block, or pointed to by a file name */
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memory block, or pointed to by a file name */
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virtual bool makesig(RclConfig* cnf, const Rcl::Doc& idoc,
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virtual bool makesig(RclConfig* cnf, const Rcl::Doc& idoc,
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std::string& sig) = 0;
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std::string& sig) = 0;
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virtual ~DocFetcher() {}
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virtual ~DocFetcher() {}
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};
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};
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/** Return an appropriate fetcher object given the backend string identifier */
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/** Return an appropriate fetcher object given the backend string
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* identifier inside idoc*/
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DocFetcher *docFetcherMake(RclConfig *config, const Rcl::Doc& idoc);
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DocFetcher *docFetcherMake(RclConfig *config, const Rcl::Doc& idoc);
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#endif /* _FETCHER_H_INCLUDED_ */
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#endif /* _FETCHER_H_INCLUDED_ */
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