[Feature][PostgreSQL-jdbc] Supports GEOMETRY data type for PostgreSQL

[ic4y]

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Description

Currently, the Pg source connector does not support the GEOMETRY data type. We can convert the GEOMETRY data type to the String data type in Zeta to support the reading of GEOMETRY data types, like pg(GEOMETRY) -> zeta(String).

You may need to modify the following files in the JDBC connector:
src/main/java/org/apache/seatunnel/connectors/seatunnel/jdbc/internal/dialect/psql/PostgresTypeMapper.java
src/main/java/org/apache/seatunnel/connectors/seatunnel/jdbc/internal/dialect/psql/PostgresJdbcRowConverter.java

When testing, note that Pg needs to install the PostGIS plugin:

apt-get install postgis postgresql-12-postgis-3
CREATE EXTENSION IF NOT EXISTS postgis;

Create a table and insert data:

CREATE TABLE spatial_data (
    id SERIAL PRIMARY KEY,
    name VARCHAR(255),
    geometry_data GEOMETRY
);

-- Insert a point
INSERT INTO spatial_data (name, geometry_data)
VALUES ('Test Point', ST_GeomFromText('POINT(30 10)'));

-- Insert a linestring
INSERT INTO spatial_data (name, geometry_data)
VALUES ('Test LineString', ST_GeomFromText('LINESTRING(30 10, 40 40, 50 50, 60 60)'));

Add the GEOMETRY data type in the e2e test and check the synchronized results.

Usage Scenario

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Related issues

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Are you willing to submit a PR?

• Yes I am willing to submit a PR!

Code of Conduct

• I agree to follow this project's Code of Conduct

[zhilinli123]

I'd like to finish it thanks

[ic4y]

I'd like to finish it thanks
Great, looking forward to submitting a pull request.

[zhilinli123]

I understand it's just converted to String on the Source side because we don't know what type is downstream, right
@ic4y @EricJoy2048

[ic4y]

I understand it's just converted to String on the Source side because we don't know what type is downstream, right
@ic4y @EricJoy2048
You're right

[zhilinli123]

Closing issues
feature pr:#4673