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[Feature][Connector-V2][Jdbc] Add oceanbase dialect factory (apache#4989
) --------- Co-authored-by: silenceland <[email protected]> Co-authored-by: changhuyan <[email protected]>
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| # OceanBase | ||
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| > JDBC OceanBase Source Connector | ||
| ## Support Those Engines | ||
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| > Spark<br/> | ||
| > Flink<br/> | ||
| > SeaTunnel Zeta<br/> | ||
| ## Key Features | ||
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| - [x] [batch](../../concept/connector-v2-features.md) | ||
| - [ ] [stream](../../concept/connector-v2-features.md) | ||
| - [x] [exactly-once](../../concept/connector-v2-features.md) | ||
| - [x] [column projection](../../concept/connector-v2-features.md) | ||
| - [x] [parallelism](../../concept/connector-v2-features.md) | ||
| - [x] [support user-defined split](../../concept/connector-v2-features.md) | ||
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| ## Description | ||
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| Read external data source data through JDBC. | ||
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| ## Supported DataSource Info | ||
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| | Datasource | Supported versions | Driver | Url | Maven | | ||
| |------------|--------------------------------|---------------------------|--------------------------------------|-------------------------------------------------------------------------------| | ||
| | OceanBase | All OceanBase server versions. | com.oceanbase.jdbc.Driver | jdbc:oceanbase://localhost:2883/test | [Download](https://mvnrepository.com/artifact/com.oceanbase/oceanbase-client) | | ||
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| ## Database Dependency | ||
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| > Please download the support list corresponding to 'Maven' and copy it to the '$SEATNUNNEL_HOME/plugins/jdbc/lib/' working directory<br/> | ||
| > For example: cp oceanbase-client-xxx.jar $SEATNUNNEL_HOME/plugins/jdbc/lib/ | ||
| ## Data Type Mapping | ||
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| ### Mysql Mode | ||
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| | Mysql Data type | SeaTunnel Data type | | ||
| |-----------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------| | ||
| | BIT(1)<br/>INT UNSIGNED | BOOLEAN | | ||
| | TINYINT<br/>TINYINT UNSIGNED<br/>SMALLINT<br/>SMALLINT UNSIGNED<br/>MEDIUMINT<br/>MEDIUMINT UNSIGNED<br/>INT<br/>INTEGER<br/>YEAR | INT | | ||
| | INT UNSIGNED<br/>INTEGER UNSIGNED<br/>BIGINT | BIGINT | | ||
| | BIGINT UNSIGNED | DECIMAL(20,0) | | ||
| | DECIMAL(x,y)(Get the designated column's specified column size.<38) | DECIMAL(x,y) | | ||
| | DECIMAL(x,y)(Get the designated column's specified column size.>38) | DECIMAL(38,18) | | ||
| | DECIMAL UNSIGNED | DECIMAL((Get the designated column's specified column size)+1,<br/>(Gets the designated column's number of digits to right of the decimal point.))) | | ||
| | FLOAT<br/>FLOAT UNSIGNED | FLOAT | | ||
| | DOUBLE<br/>DOUBLE UNSIGNED | DOUBLE | | ||
| | CHAR<br/>VARCHAR<br/>TINYTEXT<br/>MEDIUMTEXT<br/>TEXT<br/>LONGTEXT<br/>JSON | STRING | | ||
| | DATE | DATE | | ||
| | TIME | TIME | | ||
| | DATETIME<br/>TIMESTAMP | TIMESTAMP | | ||
| | TINYBLOB<br/>MEDIUMBLOB<br/>BLOB<br/>LONGBLOB<br/>BINARY<br/>VARBINAR<br/>BIT(n) | BYTES | | ||
| | GEOMETRY<br/>UNKNOWN | Not supported yet | | ||
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| ### Oracle Mode | ||
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| | Oracle Data type | SeaTunnel Data type | | ||
| |-----------------------------------------------------------|---------------------| | ||
| | Number(p), p <= 9 | INT | | ||
| | Number(p), p <= 18 | BIGINT | | ||
| | Number(p), p > 18 | DECIMAL(38,18) | | ||
| | REAL<br/> BINARY_FLOAT | FLOAT | | ||
| | BINARY_DOUBLE | DOUBLE | | ||
| | CHAR<br/>NCHAR<br/>NVARCHAR2<br/>NCLOB<br/>CLOB<br/>ROWID | STRING | | ||
| | DATE | DATE | | ||
| | TIMESTAMP<br/>TIMESTAMP WITH LOCAL TIME ZONE | TIMESTAMP | | ||
| | BLOB<br/>RAW<br/>LONG RAW<br/>BFILE | BYTES | | ||
| | UNKNOWN | Not supported yet | | ||
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| ## Source Options | ||
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| | Name | Type | Required | Default | Description | | ||
| |------------------------------|--------|----------|-----------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | ||
| | url | String | Yes | - | The URL of the JDBC connection. Refer to a case: jdbc:oceanbase://localhost:2883/test | | ||
| | driver | String | Yes | - | The jdbc class name used to connect to the remote data source, should be `com.oceanbase.jdbc.Driver`. | | ||
| | user | String | No | - | Connection instance user name | | ||
| | password | String | No | - | Connection instance password | | ||
| | compatible_mode | String | Yes | - | The compatible mode of OceanBase, can be 'mysql' or 'oracle'. | | ||
| | query | String | Yes | - | Query statement | | ||
| | connection_check_timeout_sec | Int | No | 30 | The time in seconds to wait for the database operation used to validate the connection to complete | | ||
| | partition_column | String | No | - | The column name for parallelism's partition, only support numeric type column and string type column. | | ||
| | partition_lower_bound | Long | No | - | The partition_column min value for scan, if not set SeaTunnel will query database get min value. | | ||
| | partition_upper_bound | Long | No | - | The partition_column max value for scan, if not set SeaTunnel will query database get max value. | | ||
| | partition_num | Int | No | job parallelism | The number of partition count, only support positive integer. Default value is job parallelism. | | ||
| | fetch_size | Int | No | 0 | For queries that return a large number of objects, you can configure <br/> the row fetch size used in the query to improve performance by <br/> reducing the number database hits required to satisfy the selection criteria.<br/> Zero means use jdbc default value. | | ||
| | common-options | | No | - | Source plugin common parameters, please refer to [Source Common Options](common-options.md) for details | | ||
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| ### Tips | ||
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| > If partition_column is not set, it will run in single concurrency, and if partition_column is set, it will be executed in parallel according to the concurrency of tasks. | ||
| ## Task Example | ||
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| ### Simple: | ||
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| ``` | ||
| env { | ||
| execution.parallelism = 2 | ||
| job.mode = "BATCH" | ||
| } | ||
| source { | ||
| Jdbc { | ||
| driver = "com.oceanbase.jdbc.Driver" | ||
| url = "jdbc:oceanbase://localhost:2883/test?useUnicode=true&characterEncoding=UTF-8&rewriteBatchedStatements=true" | ||
| user = "root" | ||
| password = "" | ||
| compatible_mode = "mysql" | ||
| query = "select * from source" | ||
| } | ||
| } | ||
| transform { | ||
| # If you would like to get more information about how to configure seatunnel and see full list of transform plugins, | ||
| # please go to https://seatunnel.apache.org/docs/transform/sql | ||
| } | ||
| sink { | ||
| Console {} | ||
| } | ||
| ``` | ||
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| ### Parallel: | ||
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| > Read your query table in parallel with the shard field you configured and the shard data. You can do this if you want to read the whole table | ||
| ``` | ||
| source { | ||
| Jdbc { | ||
| driver = "com.oceanbase.jdbc.Driver" | ||
| url = "jdbc:oceanbase://localhost:2883/test?useUnicode=true&characterEncoding=UTF-8&rewriteBatchedStatements=true" | ||
| user = "root" | ||
| password = "" | ||
| compatible_mode = "mysql" | ||
| query = "select * from source" | ||
| # Parallel sharding reads fields | ||
| partition_column = "id" | ||
| # Number of fragments | ||
| partition_num = 10 | ||
| } | ||
| } | ||
| ``` | ||
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| ### Parallel Boundary: | ||
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| > It is more efficient to read your data source according to the upper and lower boundaries you configured | ||
| ``` | ||
| source { | ||
| Jdbc { | ||
| driver = "com.oceanbase.jdbc.Driver" | ||
| url = "jdbc:oceanbase://localhost:2883/test?useUnicode=true&characterEncoding=UTF-8&rewriteBatchedStatements=true" | ||
| user = "root" | ||
| password = "" | ||
| compatible_mode = "mysql" | ||
| query = "select * from source" | ||
| partition_column = "id" | ||
| partition_num = 10 | ||
| # Read start boundary | ||
| partition_lower_bound = 1 | ||
| # Read end boundary | ||
| partition_upper_bound = 500 | ||
| } | ||
| } | ||
| ``` | ||
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