Class MultiFieldQueryParser

Creates a MultiFieldQueryParser.

It will, when Parse(String) is called, construct a query like this (assuming the query consists of two terms and you specify the two fields title and body):

(title:term1 body:term1) (title:term2 body:term2)

When DefaultOperator is set to AND_OPERATOR, the result will be:

+(title:term1 body:term1) +(title:term2 body:term2)

In other words, all the query's terms must appear, but it doesn't matter in what fields they appear.

Creates a MultiFieldQueryParser. Allows passing of a map with term to Boost, and the boost to apply to each term.

It will, when Parse(String) is called, construct a query like this (assuming the query consists of two terms and you specify the two fields title and body):

(title:term1 body:term1) (title:term2 body:term2)

When DefaultOperator is set to AND_OPERATOR, the result will be:

+(title:term1 body:term1) +(title:term2 body:term2)

When you pass a boost (title=>5 body=>10) you can get

+(title:term1^5.0 body:term1^10.0) +(title:term2^5.0 body:term2^10.0)

In other words, all the query's terms must appear, but it doesn't matter in what fields they appear.

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)

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)

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)