Notice: This Wiki is now read only and edits are no longer possible. Please see: https://gitlab.eclipse.org/eclipsefdn/helpdesk/-/wikis/Wiki-shutdown-plan for the plan.
Difference between revisions of "Scout/Concepts/SqlStyle"
(New page: {{ScoutPage|cat=Concepts}} SqlStyle is a Scout concept used to have SQL code that is independent from the database engine. {{ScoutJavadoc|AbstractSqlStyle|C}} ==Description== {{Note|TOD...) |
(add Test connection statements + link to Write_a_jdbc_connection_bundle) |
||
| Line 7: | Line 7: | ||
==Description== | ==Description== | ||
{{Note|TODO|Add a description}} | {{Note|TODO|Add a description}} | ||
| + | |||
| + | === Test connection === | ||
| + | Eclipse Scout needs to check if the database is available or not. There is no simple SQL statement that works on every database engine. That is the reason why this is delegated the SQL Style method <code>testConnection(Connection conn)</code> | ||
| + | |||
| + | For Derby: | ||
| + | <source lang="SQL"> | ||
| + | SELECT 1 FROM SYSIBM.SYSDUMMY1 | ||
| + | </source> | ||
| + | |||
| + | For MySql, Oracle: | ||
| + | <source lang="sql"> | ||
| + | SELECT 1 FROM DUAL | ||
| + | </source> | ||
| + | |||
| + | For Microsoft : | ||
| + | <source lang="sql"> | ||
| + | SELECT count(1) FROM dbo.sysobjects | ||
| + | </source> | ||
| Line 19: | Line 37: | ||
== See also == | == See also == | ||
* {{ScoutLink|Concepts|Server Plug-In|Server Plug-In}} | * {{ScoutLink|Concepts|Server Plug-In|Server Plug-In}} | ||
| − | * | + | * {{ScoutLink|HowTo|Write_a_jdbc_connection_bundle|How To write a JDBC connection bundle}} |
Revision as of 07:07, 21 October 2011
The Scout documentation has been moved to https://eclipsescout.github.io/.
SqlStyle is a Scout concept used to have SQL code that is independent from the database engine.
The Scout documentation has been moved to https://eclipsescout.github.io/.
Description
TODO
Add a description
Add a description
Test connection
Eclipse Scout needs to check if the database is available or not. There is no simple SQL statement that works on every database engine. That is the reason why this is delegated the SQL Style method testConnection(Connection conn)
For Derby:
SELECT 1 FROM SYSIBM.SYSDUMMY1
For MySql, Oracle:
SELECT 1 FROM DUAL
For Microsoft :
SELECT COUNT(1) FROM dbo.sysobjects
Included SqlStyle
Eclipse Scout is shipped with some SqlStyles:
- DB2SqlStyle
- DerbySqlStyle
- MSSQLSqlStyle
- OracleSqlStyle
See also
- The Scout documentation has been moved to https://eclipsescout.github.io/.
- The Scout documentation has been moved to https://eclipsescout.github.io/.