Clob field not populated in object in grailsChange changeset using grails DSL - grails

Question

I am making my first migration script that involves the use of the Groovy/Grails DSL. It looks like this:
import my.package.MyObject
import my.package.MyObjectUtil
import javax.xml.bind.DatatypeConverter
databaseChangeLog = {
changeSet(author: 'wheresjim', id: '1387238199-1') {
comment {'Sets the timestamp in each MyObject where null using the message text'}
grailsChange {
change {
MyObjectUtil myObjectUtil = new MyObjectUtil()
def criteria = MyObject.where {
isNull("timestamp")
}
def PAGESIZE = 10
int numRows = criteria.count()
int pages = Math.ceil(numRows / PAGESIZE)
(pages..0).each { page ->
int offset = PAGESIZE * page + PAGESIZE
def data = criteria.list(offset: offset, max: PAGESIZE, sort: 'id', order: 'asc')
data.each { MyObject myObject ->
Date timestamp = new Date(0L)
try {
def thisMessage = myObjectUtil.createMyObjectFromMessage(myObject.messageText)
String dateStr = thisMessage.messageIdentification?.timestamp
timestamp = dateStr ? DatatypeConverter.parseDateTime(dateStr).getTime() : timestamp
} catch (Exception e) {
// Do nothing, this will be logged in the finally which catches another error condition
} finally {
if (timestamp == new Date(0L)) {
log.warn "Error attempting to set timestamp in MyObject ${myObject.id}, setting to $eventDateTime"
}
}
myObject.timestamp = timestamp
myObject.save(flush: true)
}
log.warn "Updated ${myObject.id}"
}
}
}
}
}
The MyObject.messageText is a clob in the database, and to my knowledge, there has been no effort to lazily load it.
I should note that this exact script works (it can find the clob text) using the grails console plugin on the app.

Answer 1

In MyObject make sure your have the following lines:
static mapping = {
messageText type: 'text'
}