Refactoring EdgeCollection into Collection api

Author: ewoutp

edge.go

@@ -0,0 +1,31 @@
+//
+// DISCLAIMER
+//
+// Copyright 2017 ArangoDB GmbH, Cologne, Germany
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Copyright holder is ArangoDB GmbH, Cologne, Germany
+//
+// Author Ewout Prangsma
+//
+
+package driver
+
+// EdgeDocument is a minimal document for use in edge collection.
+// You can use this in your own edge document structures completely use your own.
+// If you use your own, make sure to include a `_from` and `_to` field.
+type EdgeDocument struct {
+	From DocumentID `json:"_from,omitempty"`
+	To   DocumentID `json:"_to,omitempty"`
+}