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titangraph.go
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/
titangraph.go
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/*
* Copyright (C) 2016 Red Hat, Inc.
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.
*
*/
package graph
const index = `
mgmt = graph.openManagement()
idKey = mgmt.getPropertyKey("_ID")
if (!idKey) {
idKey = mgmt.makePropertyKey("_ID").dataType(String.class).make()
}
if (!mgmt.getGraphIndex("byNodeID")) {
mgmt.buildIndex('byNodeID',Vertex.class).addKey(idKey).unique().buildCompositeIndex()
}
if (!mgmt.getGraphIndex("byEdgeID")) {
mgmt.buildIndex('byEdgeID',Edge.class).addKey(idKey).buildCompositeIndex()
}
mgmt.commit()
`
type TitangraphBackend struct {
GremlinBackend
}
func (t *TitangraphBackend) initialize() error {
_, err := t.client.Query(index)
if err != nil {
return err
}
return nil
}
func NewTitangraphBackend(endpoint string) (*TitangraphBackend, error) {
g, err := NewGremlinBackend(endpoint)
if err != nil {
return nil, err
}
t := &TitangraphBackend{*g}
err = t.initialize()
if err != nil {
return nil, err
}
return t, nil
}