Question

我需要更新顶点并将其作为ODocument返回。首先，我查询它，然后更新属性，最后将其作为ODocument返回。

但我只能检索Vertex，而不是OrientVertex：

Vertex vPlace = graph.getVertices("id",id).iterator().next();

我在http://orientdb.com/docs/2.2/Graph-Blueprints.html中找到了示例：

Iterable<OrientVertex> results = g.query().has("name", EQUALS, "fast");

但它没有编译：找不到“EQUALS”。如何将顶点查询为OrientVertex？

Answer 1

这对你有用吗？

String dbName = "testDB";

OrientGraphFactory dbfactory = new OrientGraphFactory("remote:127.0.0.1:2424/"+dbName, "root", "root").setupPool(1, 50);

OrientGraph db = dbfactory.getTx();

try {
    String query = "select from V where name = ?";

    Iterable<OrientVertex> result = db.command(new OCommandSQL(query)).execute("testName");

    while(result.iterator().hasNext()){
        OrientVertex d = result.iterator().next();

        //do something with d
        System.out.println(d.getProperty("name"));

    }

} catch (Exception e) {
            // TODO: handle exception
            System.out.println(e);
}

如何将顶点查询为OrientVertex

1 个答案: