public interface DbConfigTool
SQL engine. You can
either use the Database
Tools via the Admin Console UI or directly
specify equivalent properties
in your server.properties file (see
"Manually specifying.." below).
These settings will be written to server.properties
in your deployment directory - use
the "Download server.properties" button to download the settings and merge them to the
server.properties file in your Eclipse (or other IDE) project.
Manually specifying database connection settings
The Admin Console maintains settings in the server.properties
file, found in
your application's WEB-INF/classes directory. If you prefer, you can maintain
these settings by directly editing that file. You should restart your servlet engine
after changing this file.
For example, the following settings are the defaults in a new Smart GWT installation for
a MySQL server; they are approximately correct for a MySQL server running on the same
machine as the servlet engine and listening on the default MySQL port. For details of what
each of these properties means, check this
page.
sql.Mysql.database.type: mysql
sql.Mysql.database.ansiMode: false
sql.Mysql.interface.type: dataSource
sql.Mysql.driver: com.mysql.jdbc.jdbc2.optional.MysqlDataSource
# name of the database to use
sql.Mysql.driver.databaseName: isomorphic
# hostname and port where the database server is installed
sql.Mysql.driver.serverName: localhost
sql.Mysql.driver.portNumber: 3306
# username and password that can create and modify tables in that database
# this user must have the following privileges for the system to function
# properly: create/alter/drop table; insert/update/replace/delete rows.
sql.Mysql.driver.user: root
sql.Mysql.driver.password:
Note the distinction here between database type and database name. Database
type refers to the actual product - Oracle, DB2 or whatever. In the above example, database
type is "mysql" (all lowercase) - the value of property sql.Mysql.database.type.
Database type is very important. The type of a given database connection dictates whether
features like SQL paging and transactions are supported; it even dictates the syntax of the
SQL we generate.
Database name is just an arbitrary name for a particular database connection, and it is
embedded in the property names immediately after the sql prefix. In this example
it happens to be very similar to the database type - "Mysql" as opposed to "mysql" - but in
fact the name has no significance and could be any string. When referring to specific
database connections in your DataSources with the
dbName property, it is the database
name you use.
NOTE: It is common for DataSources to not specify dbName. In this case, the
default database is used. To specify the default database manually in
server.properties, set
sql.defaultDatabase, using database
name. So, to set our example connection from above as the default:
sql.defaultDatabase: Mysql
Manually specifying JNDI settings
Instead of specifying database connection parameters directly in
server.properties,
it is possible to connect to a database that is configured as a JNDI resource in your
application server. Assume you have an Oracle JNDI resource with the name "jndiTest",
configured similar to this in Tomcat:
<Resource name="jdbc/jndiTest"
auth="Container"
type="javax.sql.DataSource"
driverClassName="oracle.jdbc.driver.OracleDriver"
url="jdbc:oracle:thin:@192.168.132.152:1521:xe"
username="system"
password="manager"
initialSize="5"
maxActive="50" />
The minimal set of properties required to create a Smart GWT database connection that
attaches to this resource is as follows (Note that the java:comp/env/ prelude
in the first line is optional - the server will automatically look there if it can't find
the resource in the absolute location)
sql.myOracleConnection.driver.name: java:comp/env/jdbc/jndiTest
sql.myOracleConnection.database.type: oracle
sql.myOracleConnection.interface.type: jndi
Test Data
There is an "Add Test Data" button in the tab that allows you to upload CSV, JSON or XML String, and have it permanently stored as XML.
For examples on how to set up test data see the String page.
SqlConnectionPooling,
TestData