public DdlWrite generateDdl(ChangeSet changeSet) throws IOException {
DdlWrite write = new DdlWrite();
DdlHandler handler = handler();
handler.generate(write, changeSet);
return write;
}
private void createDdl() throws IOException {
if (write == null) {
ChangeSet createChangeSet = getChangeSet();
write = new DdlWrite();
DdlHandler handler = handler();
handler.generate(write, createChangeSet);
}
}