1.3 EdgeLabel

假设已经创建好了1.1.3中的 PropertyKeys 和 1.2.3中的 VertexLabels

1.3.1 创建一个EdgeLabel

Method & Url

POST http://localhost:8080/graphs/hugegraph/schema/edgelabels

Request Body

{
    "name": "created",
    "source_label": "person",
    "target_label": "software",
    "frequency": "SINGLE",
    "properties": [
        "date"
    ],
    "sort_keys": [],
    "nullable_keys": [],
    "enable_label_index": true
}

Response Status

201

Response Body

{
    "id": 1,
    "sort_keys": [
    ],
    "source_label": "person",
    "name": "created",
    "index_names": [
    ],
    "properties": [
        "date"
    ],
    "target_label": "software",
    "frequency": "SINGLE",
    "nullable_keys": [
    ],
    "enable_label_index": true,
    "user_data": {}
}

1.3.2 为已存在的EdgeLabel添加properties或userdata，或者移除userdata（目前不支持移除properties）

Params

• action: 表示当前行为是添加还是移除，取值为append（添加）和eliminate（移除）

Method & Url

PUT http://localhost:8080/graphs/hugegraph/schema/edgelabels/created?action=append

Request Body

{
    "name": "created",
    "properties": [
        "weight"
    ],
    "nullable_keys": [
        "weight"
    ]
}

Response Status

200

Response Body

{
    "id": 2,
    "sort_keys": [
    ],
    "source_label": "person",
    "name": "created",
    "index_names": [
    ],
    "properties": [
        "date",
        "weight"
    ],
    "target_label": "software",
    "frequency": "SINGLE",
    "nullable_keys": [
        "weight"
    ],
    "enable_label_index": true,
    "user_data": {}
}

1.3.3 获取所有的EdgeLabel

Method & Url

GET http://localhost:8080/graphs/hugegraph/schema/edgelabels

Response Status

200

Response Body

{
    "edgelabels": [
        {
            "id": 1,
            "sort_keys": [
            ],
            "source_label": "person",
            "name": "created",
            "index_names": [
            ],
            "properties": [
                "date",
                "weight"
            ],
            "target_label": "software",
            "frequency": "SINGLE",
            "nullable_keys": [
                "weight"
            ],
            "enable_label_index": true,
            "user_data": {}
        },
        {
            "id": 2,
            "sort_keys": [
            ],
            "source_label": "person",
            "name": "knows",
            "index_names": [
            ],
            "properties": [
                "date",
                "weight"
            ],
            "target_label": "person",
            "frequency": "SINGLE",
            "nullable_keys": [
            ],
            "enable_label_index": false,
            "user_data": {}
        }
    ]
}

1.3.4 根据name获取EdgeLabel

Method & Url

GET http://localhost:8080/graphs/hugegraph/schema/edgelabels/created

Response Status

200

Response Body

{
    "id": 1,
    "sort_keys": [
    ],
    "source_label": "person",
    "name": "created",
    "index_names": [
    ],
    "properties": [
        "date",
        "city",
        "weight"
    ],
    "target_label": "software",
    "frequency": "SINGLE",
    "nullable_keys": [
        "city",
        "weight"
    ],
    "enable_label_index": true,
    "user_data": {}
}

1.3.5 根据name删除EdgeLabel

删除 EdgeLabel 会导致删除对应的边以及相关的索引数据，会产生一个异步任务

Method & Url

DELETE http://localhost:8080/graphs/hugegraph/schema/edgelabels/created

Response Status

202

Response Body

{
    "task_id": 1
}

注：

可以通过GET http://localhost:8080/graphs/hugegraph/tasks/1（其中”1”是task_id）来查询异步任务的执行状态，更多异步任务RESTful API