Function NewPattern

runtime/sam/expr/agg/agg.go:26–102

(op string, distinct, hasarg bool)

}

func NewPattern(op string, distinct, hasarg bool) (Pattern, error) {
	needarg := true
	var pattern Pattern
	switch op {
	case "count":
		needarg = false
		pattern = func() Function {
			var c Count
			return &c
		}
	case "any":
		pattern = func() Function {
			return &Any{}
		}
	case "avg":
		pattern = func() Function {
			return &Avg{}
		}
	case "blend":
		pattern = func() Function {
			return newFuse(false)
		}
	case "dcount":
		pattern = func() Function {
			return NewDCount()
		}
	case "fuse":
		pattern = func() Function {
			return newFuse(true)
		}
	case "sum":
		pattern = func() Function {
			return newMathReducer(anymath.Add)
		}
	case "collect_map":
		pattern = func() Function {
			return NewCollectMap()
		}
	case "min":
		pattern = func() Function {
			return newMathReducer(anymath.Min)
		}
	case "max":
		pattern = func() Function {
			return newMathReducer(anymath.Max)
		}
	case "union":
		pattern = func() Function {
			return NewUnion()
		}
	case "collect":
		pattern = func() Function {
			return &Collect{}
		}
	case "and":
		pattern = func() Function {
			return &And{}
		}