Function processBinaryBoolean

query/math.go:183–208

processBinaryBoolean handles the binary operands which return a boolean value. All the inequality operators (<, >, <=, >=, !=, ==)

(mNode *mathTree)

// return a boolean value.
// All the inequality operators (<, >, <=, >=, !=, ==)
func processBinaryBoolean(mNode *mathTree) error {
	srcMap := mNode.Child[0].Val
	destMap := types.NewShardedMap()
	aggName := mNode.Fn

	ch := mNode.Child[1]
	curMap := ch.Val
	srcMap.Iterate(func(k uint64, val types.Val) error {
		curVal, _ := curMap.Get(k)
		if ch.Const.Value != nil {
			// Use the constant value that was supplied.
			curVal = ch.Const
		}
		res, err := compareValues(aggName, val, curVal)
		if err != nil {
			return errors.Wrapf(err, "Wrong values in comparison function.")
		}
		destMap.Set(k, types.Val{
			Tid:   types.BoolID,
			Value: res,
		})
		return nil
	})
	mNode.Val = destMap
	return nil
}

// processTernary handles the ternary operand cond()
func processTernary(mNode *mathTree) error {