我實際上通過使用Hibernate UserType來表示EmbeddedThing類來找到解決此問題的方法。 我的代碼現在看起來像這樣和完美的作品:
Thing.groovy:
import EmbeddedThingUserType
class Thing {
String someText
EmbeddedThing embeddedThing
Date someDate
static embedded = ['embeddedThing']
static mapping = {
version false
embeddedThing type: EmbeddedThingUserType, {
column name: "embedded_thing_text"
column name: "embedded_thing_version"
column name: "embedded_thing_other_text"
}
}
static constraints = {
embeddedThing(unique: true)
}
}
EmbeddedThing.groovy:
class EmbeddedThing {
String textOfSomeSort
String version
String textOfSomeOtherSort
}
EmbeddedThingUserType.groovy:
class EmbeddedThingUserType implements UserType {
int[] sqlTypes() {
return [StringType.INSTANCE.sqlType(),
StringType.INSTANCE.sqlType(),
StringType.INSTANCE.sqlType()]
}
Class returnedClass() {
return EmbeddedThing
}
public Object nullSafeGet(ResultSet resultSet, String[] names, Object owner)
throws HibernateException, SQLException {
if (resultSet && names) {
return new EmbeddedThing(
textOfSomeSort: resultSet?.getString(names[0] ?: '_missing_textOfSomeSort_'),
version: resultSet?.getString(names[1] ?: '_missing_version_'),
textOfSomeOtherSort: resultSet?.getString(names[2] ?: '_missing_textOfSomeOtherSort_'))
} else {
return null
}
}
public void nullSafeSet(PreparedStatement preparedStatement, Object value, int index)
throws HibernateException, SQLException {
if (value != null) {
preparedStatement.setString(index, value?.textOfSomeSort)
preparedStatement.setString(index + 1, value?.version)
preparedStatement.setString(index + 2, value?.textOfSomeOtherSort)
} else {
preparedStatement.setString(index, '_missing_textOfSomeSort_')
preparedStatement.setString(index + 1, '_missing_version_')
preparedStatement.setString(index + 2, '_missing_textOfSomeOtherSort_')
}
}
@Override
public boolean isMutable() {
return false
}
@Override
public boolean equals(Object x, Object y) throws HibernateException {
return x.equals(y)
}
@Override
public int hashCode(Object x) throws HibernateException {
assert (x != null)
return x.hashCode()
}
@Override
public Object deepCopy(Object value) throws HibernateException {
return value
}
@Override
public Object replace(Object original, Object target, Object owner)
throws HibernateException {
return original
}
@Override
public Serializable disassemble(Object value) throws HibernateException {
return (Serializable) value
}
@Override
public Object assemble(Serializable cached, Object owner)
throws HibernateException {
return cached
}
}
配置。 groovy:
grails.gorm.default.mapping = {
'user-type'(type: EmbeddedThingUserType, class: EmbeddedThing)
}
你需要對Grails自帶的這個域類進行版本控制嗎?如果沒有,你嘗試禁用它? –
不幸的是,禁用樂觀鎖定是一種選擇。並禁用它也沒有工作。 – FighterHayabusa
然後,由於您將這個其他類嵌入到您的域類中,因此它的版本屬性與樂觀鎖定使用的版本之間會存在衝突。簡單地說,它不會工作。抱歉。 –