CODEWITHSUNDEEP
c#-4.0indexinglucene.net
michelle
michelle

Reputation: 2807

Condition to check whether document exists in Index (Lucene.NET)

I am using Lucene.NET and I would like to check before whether a document is contained in the index, so that if it is, I do not need to store it in the index, but I can skip it. I've read some questions that had the same problem, but they all dealt with deleting and updating it with the new document. I don't want to have to do that since the document will contain the exact same data and it would be useless to store it again. I have a field that acts as an ID called URL where each document contains its specific URL. therefore there is a way for me to identify the specific document, I just don't know what condition I should use.

Any help?

Upvotes: 4

Views: 2282

Answers (1)

Alexey Shcherbachev
Alexey Shcherbachev

Reputation: 237

I would use something like this:

IndexReader reader;
Term indexTerm = new Term(FieldNames.UniqueId, itemId.ToString());
TermDocs docs = reader.TermDocs(indexTerm);
if (docs.Next())
{
    continue;
}

Upvotes: 5

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