如何在不使用Datastax Studio但通过Java创建图形及其模式的情况下？ [英] How to create a graph and its schema without using Datastax Studio but through Java?

问题描述

我试图通过java创建我与DSE Graph的第一个连接..

I was trying to create my first connection with DSE Graph through java..

    public static void main(String args[]){
        DseCluster dseCluster = null;

        try {
            dseCluster = DseCluster.builder()
                    .addContactPoint("192.168.1.43")
                    .build();
            DseSession dseSession = dseCluster.connect();
            GraphTraversalSource g = DseGraph.traversal(dseSession, new GraphOptions().setGraphName("graph"));
            GraphStatement graphStatement =  DseGraph.statementFromTraversal(g.addV("test"));
            GraphResultSet grs = dseSession.executeGraph(graphStatement.setGraphName("graph"));
            System.out.println(grs.one().asVertex());
        } finally {
            if (dseCluster != null) dseCluster.close();
        }
    }

起初我得到的是图表没有存在..我不得不通过DataStax Studio创建与特定图形的连接，因为它不在那里..

At first I was getting that "graph" doesn't exist.. I had to create a connection to the specific graph through DataStax Studio since it wasn't there..

现在我需要放置标签，属性等在架构中..我知道如何在工作室中做到这一点（ https://docs.datastax.com/en/latest-dse/datastax_enterprise/graph/using/createSchemaStudio.html ）但我想在代码中这样做。如何在Java中访问模式对象，以便我可以进行以下更改：

Now I need to put the labels,properties etc in the schema.. I know how to do it in the studio (https://docs.datastax.com/en/latest-dse/datastax_enterprise/graph/using/createSchemaStudio.html) but I would like to do it in the code instead. How can I have access to the schema object in Java so I can make changes like those:

schema.config().option('graph.schema_mode').set('Development')
schema.vertexLabel('test').create()

还如何创建一个不存在代码的图形？我试图搜索java-dse-graph驱动程序代码，但我没有找到任何东西：/

also how is it possible to create a graph that doesn't exist through code? I tried to search through the java-dse-graph driver code but I didn't find anything :/

谢谢！

推荐答案

请注意，您可以使用SimpleGraphStatement设置图形选项，如文档所示：
http://docs.datastax.com/en/developer/java-driver-dse/1.1/manual / graph /＃graph-options

Note that you can set graph options with a SimpleGraphStatement, as the docs show: http://docs.datastax.com/en/developer/java-driver-dse/1.1/manual/graph/#graph-options

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