Accept local Url + tests

[gfinger]

What does this PR do?

A local URL like : local:<absolutePathToDB>/DB can be used within the Console to connect to a local DB, to create and drop it.

Motivation

It should be possible to use the Console not relying on the current work-directory. It might also be advantageous not to depend on a global setting like when using the -Darcadedb.server.databaseDirectory parameter at startup of the console.

Related issues

Introduction of the -Darcadedb.server.databaseDirectory parameter for the Console.

Additional Notes

The commit also contains Unit Tests for the local connect, as well as a test whether the local URL can also be used with the CREATE DB and the DROP DB commands.
I used JDK 19 for compiling and testing, but the code is compatible with Java 8.

Checklist

• I have run the build using mvn clean package command
• My unit tests cover both failure and success scenarios: No, this seems not necessary. There is also no negative test for the existing connect test.

[lvca]

This forces the path tp be absolute, because it prefix the path with /. Is this wanted or a bug?

[gfinger]

The paths are supposed to be absolute. The intention is to not rely on the current work-directory. Any not-absolute path would always be relative to the CWD. The URL without the LOCAL_PREFIX is still supported and allows to connect to a db relative to the database directory.

[lvca]

Are you prefixing with local:/ because the absolute path already starts with /?

[gfinger]

yes, exactly.

[gfinger]

The build-error is:

Error:  Errors: 
Error:    JdbcQueriesTest.simpleCypherQuery:88 » PSQL ERROR: Syntax error on parsing query: java.lang.IllegalArgumentException: Unsupported class file major version 63
Error:    JdbcQueriesTest.simpleGremlinQuery:74 » PSQL ERROR: Syntax error on parsing query: java.lang.IllegalArgumentException: Unsupported class file major version 63
Error:    RemoteDatabaseQueriesTest.simpleCypherQuery:64->lambda$simpleCypherQuery$2:65 » Remote Error on executing remote operation query (cause:java.util.concurrent.ExecutionException detail:java.lang.IllegalArgumentException: Unsupported class file major version 63)
Error:    RemoteDatabaseQueriesTest.simpleGremlinQuery:56->lambda$simpleGremlinQuery$1:57 » Remote Error on executing remote operation query (cause:java.util.concurrent.ExecutionException detail:java.lang.IllegalArgumentException: Unsupported class file major version 63)

Is it possible that the test uses a JDK version not supported by Gremlin? I cannot see any cause in my small coding additions that might be responsible for this kind of error.

[lvca]

Merged, thanks @gfinger !