Class QueryParserUtil

This class defines utility methods to (help) parse query strings into Query objects.

Inheritance
System.Object
QueryParserUtil
Inherited Members
System.Object.ToString()
System.Object.Equals(System.Object)
System.Object.Equals(System.Object, System.Object)
System.Object.ReferenceEquals(System.Object, System.Object)
System.Object.GetHashCode()
System.Object.GetType()
System.Object.MemberwiseClone()
Assembly: Lucene.Net.QueryParser.dll
Syntax
[Serializable]
public sealed class QueryParserUtil

Methods

Name Description
Escape(String)

Returns a string where those characters that TextParser expects to be escaped are escaped by a preceding </code>.
Parse(String, String[], Occur[], Analyzer)

Parses a query, searching on the fields specified. Use this if you need to specify certain fields as required, and others as prohibited.

Usage:

string[] fields = {"filename", "contents", "description"};
Occur[] flags = {Occur.SHOULD,
    Occur.MUST,
    Occur.MUST_NOT};
MultiFieldQueryParser.Parse("query", fields, flags, analyzer);

The code above would construct a query:

(filename:query) +(contents:query) -(description:query)
Parse(String[], String[], Analyzer)

Parses a query which searches on the fields specified.

If x fields are specified, this effectively constructs:

(field1:query1) (field2:query2) (field3:query3)...(fieldx:queryx)
Parse(String[], String[], Occur[], Analyzer)

Parses a query, searching on the fields specified. Use this if you need to specify certain fields as required, and others as prohibited.

Usage:

string[] query = {"query1", "query2", "query3"};
string[] fields = {"filename", "contents", "description"};
Occur[] flags = {Occur.SHOULD,
    Occur.MUST,
    Occur.MUST_NOT};
MultiFieldQueryParser.Parse(query, fields, flags, analyzer);

The code above would construct a query:

(filename:query1) +(contents:query2) -(description:query3)

Extension Methods