FullTextSearch.scala

  case class Match(cols: Column[_]*) {
    def against(what: Column[_], modifier: SearchModifier.Value*) =
      SimpleExpression[Boolean]{ case (nodes, qb) =>
        import qb._
        qb.sqlBuilder += "MATCH("
        qb.sqlBuilder.sep(nodes, ", ")(expr(_))
        qb.sqlBuilder += ") AGAINST("
        qb.expr(what.toNode)
        qb.sqlBuilder += " "
        qb.sqlBuilder.sep(modifier, " ")(_.toString)
        qb.sqlBuilder += ")"
      }.apply(cols)
  }

  object SearchModifier extends Enumeration("IN BOOLEAN MODE", "IN NATURAL LANGUAGE MODE",
	"IN NATURAL LANGUAGE MODE WITH QUERY EXPANSION", "WITH QUERY EXPANSION") {
 	type SearchModifier = Value
 	val InBooleanMode, InNaturalLanguageMode, InNaturalLanguageModeWithQueryExpansion, WithQueryExpansion = Value
  }