public void testVersionIncrease() {
Item item = (Item) retrieveOnlyInstance(Item.class);
ObjectInfo objectInfo = db().getObjectInfo(item);
long version1 = objectInfo.getCommitTimestamp();
item._name = "modified";
db().store(item);
db().commit();
long version2 = objectInfo.getCommitTimestamp();
Assert.isGreater(version1, version2);
db().store(item);
db().commit();
objectInfo = db().getObjectInfo(item);
long version3 = objectInfo.getCommitTimestamp();
Assert.isGreater(version2, version3);
}
public void testTransactionConsistentVersion() throws Exception {
store(new Item(NEWER));
db().commit();
Item newer = itemByName(NEWER);
Item original = itemByName(ORIGINAL);
Assert.isGreater(version(original), version(newer));
newer._name += " modified";
original._name += " modified";
store(newer);
store(original);
db().commit();
Assert.areEqual(version(newer), version(original));
reopen();
newer = itemByName(newer._name);
original = itemByName(original._name);
Assert.areEqual(version(newer), version(original));
}
private void assertHandlerComparison(Comparable4 handler, Object smaller, Object greater) {
PreparedComparison comparable = handler.prepareComparison(context(), smaller);
Assert.isNotNull(comparable);
Assert.areEqual(0, comparable.compareTo(smaller));
Assert.isSmaller(0, comparable.compareTo(greater));
Assert.isGreater(0, comparable.compareTo(null));
comparable = handler.prepareComparison(context(), greater);
Assert.isNotNull(comparable);
Assert.areEqual(0, comparable.compareTo(greater));
Assert.isGreater(0, comparable.compareTo(smaller));
Assert.isGreater(0, comparable.compareTo(null));
comparable = handler.prepareComparison(context(), null);
Assert.isNotNull(comparable);
Assert.areEqual(0, comparable.compareTo(null));
Assert.isSmaller(0, comparable.compareTo(smaller));
}