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Lucene.Net Operations Index Library

Source: Internet
Author: User
Keywords Delete nbsp;
Tags .net delete directory document index net operations soft
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Delete (soft delete, only add deletion tag.) Real Delete after calling Indexwriter.optimize ()
Indexreader reader = indexreader.open (directory);

Deletes the Document for the specified ordinal (DocId).
Reader. Delete (123);

Deletes the Document containing the specified Term.
Reader. Delete (New Term (Fieldvalue, "Hello"));

Restore soft deletion.
Reader. Undeleteall ();

Reader. Close ();

Incremental update (You can add new data to an existing index library by simply setting the Create argument to False.) )

Directory directory = fsdirectory.getdirectory ("index", false);

IndexWriter writer = new IndexWriter (directory, analyzer, false);

Writer. Adddocument (Doc1);

Writer. Adddocument (DOC2);

Writer. Optimize ();

Writer. Close ();

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