type
目的 Purpose
Configures the Hibernate type for a particular property.使用例 Examples
Changing to a text type (CLOB or TEXT depending on database dialect):class Book { String title static mapping = {
title type: "text"
}
}class Book {
…
MonetaryAmount amount static mapping = {
amount type: MonetaryUserType, {
column name: "value"
column name: "currency", sqlType: "char", length: 3
}
}
}詳細 Description
Usage:
使用方法: association_name(type:string/class)Usage:
association_name(type:string/class)Hibernate will attempt to automatically select the appropriate database type from the field typed based on configuration in the Dialect class that is being used. But you can override the defaults if necessary. For example String values are mapped by default to varchar(255) columns. To store larger String values you can use a text type instead:static mapping = { title type: "text" }
UserType implementations. In this case you specify the UserType class. If the UserType maps to multiple columns you may need to specify a mapping for each column:static mapping = { amount type: MonetaryUserType, { column name: "value" column name: "currency", sqlType: "char", length: 3 } }