Orient DB - 使用密码创建 orient db 并检查是否可以使用 JAVA [英] Orient DB - create orient db with password and check if one available using JAVA

问题描述

我看到我们可以使用以下方法创建 orient db:

I saw that we can create orient db using:

ODatabaseDocumentTx db2 = new ODatabaseDocumentTx ( "local:C:/temp/db/scratchpad" ).create();

但是我们如何使用 REMOTE 类型的密码创建 orientDB 数据库.并检查数据库是否存在并说.或者如果找到它会覆盖吗?

But how can we create orientDB database using password with REMOTE type. And does that checks if a database exists and say. Or if found will it overwrite?

推荐答案

也许你正在寻找这个:

void createDB(){
    new OServerAdmin("remote:localhost")
            .connect("root", "rootPassword")
            .createDatabase("databaseName", "graph", "plocal").close();
}

请参阅此处.

更新:

在上面，如果数据库已经存在，则会抛出异常.也许你会发现这些方法更有用:

In the above, if the database already exists, an exception will be thrown. Maybe you'll find these methods more useful:

private static final String dbUrl = "remote:localhost/databaseName";
private static final String dbUser = "root";
private static final String dbPassword = "rootPassword";

public static void createDBIfDoesNotExist() throws IOException {

    OServerAdmin server = new OServerAdmin(dbUrl).connect(dbUser, dbPassword);
    if (!server.existsDatabase("plocal")) {
        server.createDatabase("graph", "plocal");
    }
    server.close();
}

public static void dropDBIfExists() throws IOException {

    OServerAdmin server = new OServerAdmin(dbUrl).connect(dbUser, dbPassword);
    if (server.existsDatabase("plocal")) {
        server.dropDatabase("plocal");
    }
    server.close();
}

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