??

?? ??(Start-up) ??

? ? ?? ? ??? "BootStrap" ???? "%PROJECT_HOME%grails-appconf" ????? ??????? ?? ?? ??? ?????? ? ????:

class ExampleBootStrap { 
     def init = { servletContext -> 
         // ??????? ??????. 
     } 
     def destroy = { 
         // ??????? ??(destroy)???. 
     } 
}

?????? ?? ?? ??(shutdown) ?? ?? ??????? ?????(gracefully) ???? ?? ?, {{destroy}} ? ??? ???? ????. ??? {{destroy}} ? ?? ?? ???? ??? ???.

??? ??(Data Source) ????

??? ?? ??? ??? "DataSource"? ??? ??, ?? ? ?? String ??? ??? ??? ???. ????? ??? ??? ?? ??? Grails? ??? ?? HSQLDB ??????? ????, ?????? ???? ???? ????? ?????:

• url - ??????? ?? JDBC URL
• driverClassName - JDBC ???? ??? ??
• username - ??? ??
• password - ????

class HsqlDataSource { 
   String dbCreate = "update" 
   String url = "jdbc:hsqldb:hsql://localhost" 
   String driverClassName = "org.hsqldb.jdbcDriver" 
   String username = "sa" 
   String password = "" 
}

??

????? Grails? {{DevelopmentDataSource}}, {{ProductionDataSource}}, {{TestDataSource}} ? ? ?? ??? ??? ?????. ??? ???? ?? ??, ???? ??, ??? ??? ??? ???. Grails? ??? ? ??? ?? ?? ??? ??? ? ????:

grails run-app // ???? "development" ??? ??? ???? ??
grails dev run-app // "development" ??? ??? ???? ??
grails prod run-app // "production" ??? ??? ???? ??
grails test run-app // "test" ??? ??? ???? ??

grails dev war   // "development" ??? ??? ???? ???
grails prod war  // "production" ??? ??? ???? ???

grails -Dgrails.env=book run-app

??? ??(pooling)

????? org.apache.commons.dbcp.BasicDataSource? ????, BasicDataSource? ?? ???? ??? ?? ???? ??? ? ????. ??? ??? ???? ???? "pooling" ??? ???? ?? false? ???? ???. ??? ?? ?? org.springframework.jdbc.datasource.DriverManagerDataSource? ?????. Grails ??? ???? ??? ?? ? DriverManagerDataSource?? ???? ?? ??? ?? ??? ?? ??(silently) ??? ????.

boolean pooling = false

?????? ?? ??

Grails? ????? ??????? ??? ? ??????? ????? ?? ????? ?? ???, "dbCreate" ??? ??? ??? ????:

String dbCreate= "update"

SQL ??

def logSql = true

??? ?? ??(dialect)? ????

Hibernate ??? ?? ??? ????? ??? ??? 'dialect' ??? ???? ????? ?? ???? ?????:

def dialect = MySQLDialect.class

?? ?????? ????

Grails GORM? Hibernate ??/?? ?? ?????? ???? ????. ??? Grails? Hibernate?? ???? ?? ??????? ?????. Hibernate? ?? SQL ???????? ?? ????? ????? ????:

• DB2 7.1, 7.2, 8.1
• HSQL DB
• HypersonicSQL 1.61, 1.7.0, 1.7.2, 1.8
• Microsoft SQL Server 2000
• MySQL 3.23, 4.0, 4.1, 5.0
• Oracle 8i, 9i, 10g
• PostgreSQL 7.1.2, 7.2, 7.3, 7.4, 8.0, 8.1
• SAP DB 7.3
• Sybase 12.5 (JConnect 5.5)
• Timesten 5.1

• Apache Derby
• HP NonStop SQL/MX 2.0 (requires Dialect from HP)
• Firebird (1.5 with JayBird 1.01 tested)
• FrontBase
• Informix
• Ingres
• Interbase (6.0.1 tested)
• Mckoi SQL
• Pointbase Embedded (4.3 tested)
• Progress 9

MySQL ????

?? ???? Java MySQL ????? ???? ????.

http://www.mysql.com/products/connector/j/

??? ?? mysql*.jar ??? Grails ?????? ????? lib ?? ?????.

ApplicationDataSource ??? ???? ??? ??? ?????:

class ApplicationDataSource { 
    boolean pooling = true 
    String dbCreate = "create-drop" 
    String url = "jdbc:mysql://localhost/yourDB" 
    String driverClassName = "com.mysql.jdbc.Driver" 
    String username = "yourUser" 
    String password = "yourPassword" 
}

Log4j ????

Log4j ? ????? "web-app/WEB-INF/log4j.properties" ??? ??? ??? ??? ????? ??? ?????. ??? ??? Log4j ??? ?????.

Log4j Hibernate ??

?? SQL ??? Hibernate ???? ??? ????

tmp/war/WEB-INF

log4j.logger.org.hibernate=debug, stdout