Metadata Query API

The new interface after the optimization of the metadata query interface, see Metadata Query API for the old interface that has been abandoned. Compared with the old interface, mainly adjust the request path and interface parameter naming

MetadataQueryRestful class

getColumns

Interface address:/api/rest_j/v1/metadataQuery/getColumns

Request method: GET

Request data type: application/x-www-form-urlencoded

Response data type: application/json

Interface description: Get the column information of the data table

Request Parameters:

Parameter name	Parameter description	Request type	Required	Data type	schema
dataSourceName	dataSourceName	path	true	string
database	database	path	true	string
system	system	query	true	string
table	table	path	true	string

Sample Response:

{
    "method": null,
    "status": 0,
    "message": "OK",
    "data": {
        "columns": [
            {
                "index": 1,
                "primaryKey": true,
                "name": "id",
                "type": "INT"
            },
            {
                "index": 2,
                "primaryKey": false,
                "name": "datasource_name",
                "type": "VARCHAR"
            },
            {
                "index": 3,
                "primaryKey": false,
                "name": "datasource_desc",
                "type": "VARCHAR"
            },
        ]
    }
}

getDatabases

Interface address:/api/rest_j/v1/metadataQuery/getDatabases

Request method: GET

Request data type: application/x-www-form-urlencoded

Response data type: application/json

Interface description: Get the list of database names of the data source

Request Parameters:

Parameter name	Parameter description	Request type	Required	Data type	schema
dataSourceName	dataSourceName	path	true	string
system	system	query	true	string

Sample Response:

{
    "method": null,
    "status": 0,
    "message": "OK",
    "data": {
        "dbs": [
            "information_schema",
            "linkis",
            "linkis_sit"
        ]
    }
}

getPartitions

return value adjusted to props -> partitions

Interface address:/api/rest_j/v1/metadataQuery/getPartitions

Request method: GET

Request data type: application/x-www-form-urlencoded

Response data type: application/json

Interface description:

Request Parameters:

Parameter name	Parameter description	Request type	Required	Data type	schema
dataSourceName	dataSourceName	path	true	string
database	database	path	true	string
system	system	query	true	string
table	table	path	true	string
traverse	traverse	query	false	boolean

Sample Response:

{
    "method": null,
    "status": 0,
    "message": "OK",
    "data": {
        "partitions": {
            "partKeys": [
                "ds"
            ],
            "root": {}
        }
    }
}

getTableProps

Interface address:/api/rest_j/v1/metadataQuery/getTableProps

Request method: GET

Request data type: application/x-www-form-urlencoded

Response data type: application/json

Interface description:

Request Parameters:

Parameter name	Parameter description	Request type	Required	Data type	schema
dataSourceName	dataSourceName	path	true	string
database	database	path	true	string
system	system	query	true	string
table	table	path	true	string

Sample Response:

{
    "method": null,
    "status": 0,
    "message": "OK",
    "data": {
        "props": {
            "skip.header.line.count": "1",
            "columns.types": "int:int:string:string:string:string:string:string:string:string:string:string:string:string:string:string:string:string:string:string",
            "columns": "id,age,job,marital,education,default,balance,housing,loan,contact,day,month,duration,campaign,pdays,previous,poutcome,y",
            "field.delim": ",",
            "transient_lastDdlTime": "1646732554",
            "partition_columns.types": "string",
            "columns.comments": "\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000",
            "bucket_count": "-1",
            "serialization.ddl": "struct demo_data { i32 id, i32 age, string job, string marital, string education, string default, string balance, string housing, string loan, string contact, string day, string month, string duration, string campaign, string pdays, string previous, string poutcome, string y}",
            "file.outputformat": "org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat",
            "partition_columns": "ds",
            "colelction.delim": "-",
            "serialization.lib": "org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe",
            "name": "dss_autotest.demo_data",
            "location": "hdfs://bdpdev01/user/hive/warehouse/hadoop/dss_autotest.db/demo_data",
            "mapkey.delim": ":",
            "file.inputformat": "org.apache.hadoop.mapred.TextInputFormat",
            "serialization.format": ",",
            "column.name.delimiter": ","
        }
    }
}

getPartitionProps

Interface address:/api/rest_j/v1/metadataQuery/getPartitionProps

Request method: GET

Request data type: application/x-www-form-urlencoded

Response data type: application/json

Interface description:

Request Parameters:

Parameter name	Parameter description	Request type	Required	Data type	schema
dataSourceName	dataSourceName	path	true	string
database	database	path	true	string
partition	partition	path	true	string
system	system	query	true	string
table	table	path	true	string

Sample Response:

{
"data": {},
"message": "",
"method": "",
"status": 0
}

getTables

Interface address:/api/rest_j/v1/metadataQuery/getTables

Request method: GET

Request data type: application/x-www-form-urlencoded

Response data type: application/json

Interface description: Get the list of data tables of a database of the data source

Request Parameters:

Parameter name	Parameter description	Request type	Required	Data type	schema
dataSourceName	dataSourceName	path	true	string
database	database	path	true	string
system	system	query	true	string

Sample Response:

{
    "method": null,
    "status": 0,
    "message": "OK",
    "data": {
        "tables": [
            "test",
            "test_0317a",
            "test_import_sqoop_1",
            "test_linkis_sqoop_1",
            "test_linkis_sqoop_2",
            "test_linkis_sqoop_3",
            "upload_test"
        ]
    }
}