GORM: mapping large text fields database agnostically

Question

I have a Grails application that will run against either a SQL Server or Oracle backend. I am using GORM as an ORM.

I want to map a large text field in a way that su

Answer 1

As hackish as it is, a solution eventually emerged: by querying the Grails configuration at startup time, you can select an appropriate data type.

class Note {

    String content

    static constraints = {
        content nullable: false, blank: false
    }

    static mappings = {
        content sqlType: DbSupport.bigStringType
    }
}

class DbSupport {

    static def getBigStringType() {

        // examine which hibernate dialect is selected, and pick
        // an appropriate type mapping for that database type:
        def dialect = ApplicationHolder.application.config.dataSource.dialect
        switch (dialect) {

            case "org.hibernate.dialect.SQLServerDialect":
                return "nvarchar"
                break

            case "org.hibernate.dialect.Oracle10gDialect":
                return "clob"
                break
        }

    }
}