databaseAvailable
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- Jonathan Muse
- Elena Kolesnik
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Availability
This routine is available starting with SIL Engine™ 2.6.5.
Syntax
databaseAvailable(dbstring [, sqlstring])
Description
Checks if the database is available. Optionally, it can check also the availability of the results for the SQL passed in as the second parameter.
Parameters
Parameter name | Type | Required | Description |
|---|---|---|---|
dbstring | string | yes | Datasource JNDI name or the datasource name. For Jira database, this is set to "jdbc/JiraDS" by default, if exported. |
sqlstring | string | no | SQL string. |
Return type
boolean (true/false)
Example
Let's suppose in our examples `TextField` is a custom field text already configured for the current Jira server instance and `TestDB` represents the database resource name configured in the server context. For more details see SQL data sources.
Example 1
TextField=databaseAvailable("TestDB"); //will set `TextField` value to `true`
Example 2
TextField=databaseAvailable("TestDB", "select pname from project"); //will set `TextField` value to `true` if the SQL passed in can be executed
Example 3
TextField=databaseAvailable("TestDB", "select pname from inexistentTableName");//will set `TextField` value to `false`, because the SQL passed in cannot be executed
Example 4
TextField=databaseAvailable("InexistentTestDB", "select pname from project");//will set `TextField` value to `false`, because the database resource does not exist
Notes
To configure the data source check the SQL data sources configuration chapter.
See also