OrientDB：缺少 "half edges"

Question

我还在玩 OrientDB。现在我正在尝试模式功能，看起来很棒:-)

我有两个数据文件：joinA.txt 和 joinB.txt，我用它们来填充具有以下模式的数据库（这两个文件的内容在 post):

CREATE CLASS Employee EXTENDS V;
CREATE PROPERTY Employee.eid Integer;
CREATE PROPERTY Employee.name String;
CREATE PROPERTY Employee.eage Short;

CREATE INDEX Employee.eid unique_hash_index;

CREATE CLASS ExtendedProfile EXTENDS V;
CREATE CLASS XYZProfile EXTENDS ExtendedProfile;
CREATE PROPERTY XYZProfile.textual String;

-- SameAs can only connect Employees to ExtendedProfile 
CREATE CLASS SameAs EXTENDS E; -- same employee across many tables
CREATE PROPERTY SameAs.out LINK ExtendedProfile;
CREATE PROPERTY SameAs.In LINK Employee;

我给 ETL 工具的 JSON 是，对于 JoinA：

{
    "source": { "file": {"path": "the_path"}},
    "extractor": {"csv": {
            "separator": "  ",
            "columns": [
                "eid:Integer",
                "name:String",
                "eage:Short"
            ]
            }
        },
    "transformers": [
        {"vertex": {"class": "Employee", "skipDuplicates": true}}
        ]
    ,"loader": {
        "orientdb": {
            "dbURL": "plocal:thepath",
            "dbType": "graph",
            "useLightweightEdges": false
        }
    }
}

对于 JoinB：

{
    "source": { "file": {"path": "thepath"}},
    "extractor": {"csv": {
            "separator": "  ",
            "columnsOnFirstLine": false,
            "quote": "\"",
            "columns": [
                "id:String",
                "textual:String"
            ]
            }
        },
    "transformers": [
        {"vertex": {"class": "XYZProfile", "skipDuplicates": true}},
        { "edge": { "class": "SameAs", 
        "direction": "out",
        "joinFieldName": "id", 
        "lookup":"Employee.eid",
        "unresolvedLinkAction":"ERROR"}},
        ],
    "loader": {
    "orientdb": {
        "dbURL": "path",
        "dbUser": "root",
        "dbPassword": "pwd",
        "dbType": "graph",
        "useLightweightEdges": false}
    }
}

现在，问题是当我运行 select expand(both()) from Employee 我得到列 out_SameAs 的边缘，而当我运行 select expand(both()) from XYZProfile 我一无所获。这很奇怪，因为第一个查询告诉我边缘指向的 @CLASS 是 XYZProfile。有人知道我的例子有什么问题吗？

干杯，

阿尔贝托

加入A：

1   A   10
2   B   14
3   C   22

加入B：

1   i0
1   i1
2   i2

Answer 1

检查你的 JSON 文件，我认为你的 JSON 文件有错误。您忘记将 [] 放在 JSON 文件的开头和结尾。

Answer 2

其实是我的错。 CREATE PROPERTY SameAs.In LINK Employee; 行是问题所在：In 应该全部小写，正如 .

所指出的

OrientDB：缺少 "half edges"

OrientDB: missing "half edges"

orientdb