public void TestPrefixFilter()
{
var prefixfilter = new PrefixFilter("name", "张");
var termQuery = new TermQuery("type", "common");
var q = new FilteredQuery(termQuery, prefixfilter);
var result = client.Search(index, "type" , q, 0, 5);
Assert.AreEqual(3, result.GetTotalCount());
prefixfilter = new PrefixFilter("name", "张三");
termQuery = new TermQuery("type", "common");
q = new FilteredQuery(termQuery, prefixfilter);
result = client.Search(index, "type" , q, 0, 5);
Assert.AreEqual(2, result.GetTotalCount());
}