internal readonly char carat = '^'; /* weight operator */
public static SrndQuery Parse(string query)
{
QueryParser parser = new QueryParser();
return parser.Parse2(query);
}
This parser generates queries that make use of position information (Span queries). It provides positional operators (w and n) that accept a numeric distance, as well as boolean operators (and, or, and not, wildcards (/// and ?), quoting (with "), and boosting (via ^).
The operators (W, N, AND, OR, NOT) can be expressed lower-cased or upper-cased, and the non-unary operators (everything but NOT) support both infix (a AND b AND c) and prefix AND(a, b, c) notation.
The W and N operators express a positional relationship among their operands. N is ordered, and W is unordered. The distance is 1 by default, meaning the operands are adjacent, or may be provided as a prefix from 2-99. So, for example, 3W(a, b) means that terms a and b must appear within three positions of each other, or in other words, up to two terms may appear between a and b.
internal readonly char carat = '^'; /* weight operator */
public static SrndQuery Parse(string query)
{
QueryParser parser = new QueryParser();
return parser.Parse2(query);
}