检查文档是否存在于Index（Lucene.NET）的条件 [英] Condition to check whether document exists in Index (Lucene.NET)

问题描述

我使用Lucene.NET，我想检查文档是否包含在索引中，所以如果是，我不需要将其存储在索引，但我可以跳过它。我读了一些有相同问题的问题，但他们都处理删除和更新与新的文档。我不想这样做，因为文档将包含完全相同的数据，它是没有用再次存储。我有一个字段，作为一个称为URL的ID，其中每个文档包含其特定的URL。因此，我有一个方法来识别具体的文件，我只是不知道应该使用什么条件。

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.

任何帮助？

推荐答案

我会使用这样的：

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

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