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aggregator.go
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/
aggregator.go
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/*
* Copyright (C) 2017 Dgraph Labs, Inc. and Contributors
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package worker
import "github.com/dgraph-io/dgraph/types"
func CouldApplyAggregatorOn(agrtr string, typ types.TypeID) bool {
if !typ.IsScalar() {
return false
}
switch agrtr {
case "min", "max":
return (typ == types.IntID ||
typ == types.FloatID ||
typ == types.DateTimeID ||
typ == types.StringID ||
typ == types.DefaultID)
case "sum", "avg":
return (typ == types.IntID ||
typ == types.FloatID)
default:
return false
}
}