GlobalConnectionTracker (openGauss JDBC Driver 5.0.0 API)

```
public class GlobalConnectionTracker
extends Object
```
Keeps track of connection reference and host spec in a global map.

Constructors
Constructor and Description
`GlobalConnectionTracker()`

All Methods Static Methods Concrete Methods
Modifier and Type	Method and Description
`static void`	`closeConnectionOfCrash(String hostSpec)` Close all existing connections under the specified host.
`static void`	`closeOldConnection(String hostSpec, Properties props)` Close all existing connections under the specified host.
`static List<QueryExecutor>`	`getConnections(String hostSpec)` get all existing connections under the specified host.
`static boolean`	`hasConnection()`
`static void`	`possessConnectionReference(QueryExecutor queryExecutor, Properties props)` Store the actual query executor and connection host spec.
`static void`	`releaseConnectionReference(QueryExecutor queryExecutor, Properties props)` Clear the reference when the connection is closed.

Constructor Detail
- GlobalConnectionTracker
```
public GlobalConnectionTracker()
```

public static void possessConnectionReference(QueryExecutor queryExecutor,
                                              Properties props)

Store the actual query executor and connection host spec.

Parameters:: props - the parsed/defaulted connection properties; queryExecutor -

public static void releaseConnectionReference(QueryExecutor queryExecutor,
                                              Properties props)

Clear the reference when the connection is closed.

Parameters:: props - the parsed/defaulted connection properties; queryExecutor -

public static void closeOldConnection(String hostSpec,
                                      Properties props)

Close all existing connections under the specified host.

Parameters:: props - the parsed/defaulted connection properties; hostSpec - ip and port.

Class GlobalConnectionTracker