@SuppressWarnings("unchecked")
private final Merge<R> toMerge(Configuration configuration) {
Table<R> i = getInto();
if (i.getPrimaryKey() != null) {
Condition condition = null;
List<Field<?>> key = new ArrayList<Field<?>>();
for (Field<?> f : i.getPrimaryKey().getFields()) {
Field<Object> field = (Field<Object>) f;
Field<Object> value = (Field<Object>) insertMaps.getMap().get(field);
key.add(value);
Condition other = field.equal(value);
if (condition == null) {
condition = other;
} else {
condition = condition.and(other);
}
}
MergeOnConditionStep<R> on = create(configuration).mergeInto(i).usingDual().on(condition);
// [#1295] Use UPDATE clause only when with ON DUPLICATE KEY UPDATE,
// not with ON DUPLICATE KEY IGNORE
MergeNotMatchedStep<R> notMatched = on;
if (onDuplicateKeyUpdate) {
notMatched = on.whenMatchedThenUpdate().set(updateMap);
}
return notMatched
.whenNotMatchedThenInsert(insertMaps.getMap().keySet())
.values(insertMaps.getMap().values());
} else {
throw new IllegalStateException(
"The ON DUPLICATE KEY IGNORE/UPDATE clause cannot be simulated when inserting into non-updatable tables : "
+ getInto());
}
}
/** Extracted method for type-safety */
private <Z> Condition condition(Table<?> pivot, Field<Z> field) {
return field.equal(pivot.field(field));
}