Question

如何在Lucence

上使用OR布尔操作搜索多个类别ID

我们在Lucene索引中将CategoryID作为字段，当我们使用单个值在CategoryID字段中搜索时，它工作正常但如果我们传递多个值，则搜索不会返回值

Example:
Category IDs = 10, 20, 30

Search Data:
Category ID = 10

Results:
It is working fine

Search Data:
Category ID = 10, 20

结果：它无法正常工作

// search in categories
if (checkedCategories != null && checkedCategories.Count > 0)
{
  foreach (int categoryID in checkedCategories)
  {
    Query queryEntity = new TermQuery(new Term("CategoryID", categoryID.ToString()));
    booleanQuery.Add(queryEntity, Occur.MUST);
  }
}

Answer 1

我找到了答案，这是以下很棒的文章

http://searchhub.org/2011/12/28/why-not-and-or-and-not/

我为解决问题所做的是：

Search by Lucene_KsuDmsDesc =        A
Search by Lucene_EmployeeNO =        B
Search by Lucene_CreatedBy  =        C
Search by Lucene_CreatedDateTime  =  D
Search by Lucene_CategoryID  =       E

公式为（A和B和C和D）和（E1或E2或...... En），其中和=必须和或者应该

如何在Lucene上使用OR布尔运算通过多个类别ID进行搜索

1 个答案: