hugegraph-sync/hugegraph-api/src/main/java/com/baidu/hugegraph/api/API.java

/*
 * Copyright 2017 HugeGraph Authors
 *
 * 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 com.baidu.hugegraph.api;

import java.util.Map;

import javax.ws.rs.NotFoundException;

import org.apache.tinkerpop.gremlin.structure.Graph;

import com.baidu.hugegraph.core.GraphManager;

public class API {

    public static Graph graph(GraphManager manager, String graph) {
        Graph g = manager.graph(graph);
        if (g == null) {
            String msg = String.format("Not found graph '%s'", graph);
            throw new NotFoundException(msg);
        }
        return g;
    }

    public static Object[] properties(Map<String, Object> properties) {
        Object[] list = new Object[properties.size() * 2];
        int i = 0;
        for (Map.Entry<String, Object> prop : properties.entrySet()) {
            list[i++] = prop.getKey();
            list[i++] = prop.getValue();
        }
        return list;
    }

    public static void checkExists(Object object, String name) {
        if (object == null) {
            String msg = String.format("Not found '%s'", name);
            throw new NotFoundException(msg);
        }
    }
}