I recently had to execute some SQL scripts when a Grails applications starts up to insert test data into the database.
Executing sql scripts is easy. Just open the SQL File and read the contents of the Script to a String variable.
String sqlFilePath = 'path/to/your/script.sql' String sqlString = new File(sqlFilePath).text
Create a SQL connection and use it’s execute(String sql) method to execute your script. To configure the SQL connection, you can use the settings from your DataSource.groovy .
def sql = Sql.newInstance(ConfigurationHolder.config.dataSource.url, ConfigurationHolder.config.dataSource.username, ConfigurationHolder.config.dataSource.password, ConfigurationHolder.config.dataSource.driverClassName) sql.execute(sqlString)
Here is the full sourcecode:
import groovy.sql.Sql import org.codehaus.groovy.grails.commons.ConfigurationHolder String sqlFilePath = 'path/to/your/script.sql' String sqlString = new File(sqlFilePath).text def sql = Sql.newInstance(ConfigurationHolder.config.dataSource.url, ConfigurationHolder.config.dataSource.username, ConfigurationHolder.config.dataSource.password, ConfigurationHolder.config.dataSource.driverClassName) sql.execute(sqlString)
This can be very useful when you have to insert a lot of test data into the database.
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