/**
* Tests offset and limit clauses for query.
*
* @throws Exception If failed.
*/
public void testOffsetLimit() throws Exception {
IgniteCache<Integer, Integer> c =
ignite(0).getOrCreateCache(cacheConfig("ints", true, Integer.class, Integer.class));
try {
List<Integer> res = new ArrayList<>();
Random rnd = new GridRandom();
for (int i = 0; i < 10; i++) {
int val = rnd.nextInt(100);
c.put(i, val);
res.add(val);
}
Collections.sort(res);
String qry = "select _val from Integer order by _val ";
assertEqualsCollections(res, columnQuery(c, qry));
assertEqualsCollections(res.subList(0, 0), columnQuery(c, qry + "limit ?", 0));
assertEqualsCollections(res.subList(0, 3), columnQuery(c, qry + "limit ?", 3));
assertEqualsCollections(res.subList(0, 9), columnQuery(c, qry + "limit ? offset ?", 9, 0));
assertEqualsCollections(res.subList(3, 7), columnQuery(c, qry + "limit ? offset ?", 4, 3));
assertEqualsCollections(res.subList(7, 9), columnQuery(c, qry + "limit ? offset ?", 2, 7));
assertEqualsCollections(res.subList(8, 10), columnQuery(c, qry + "limit ? offset ?", 2, 8));
assertEqualsCollections(res.subList(9, 10), columnQuery(c, qry + "limit ? offset ?", 1, 9));
assertEqualsCollections(res.subList(10, 10), columnQuery(c, qry + "limit ? offset ?", 1, 10));
assertEqualsCollections(
res.subList(9, 10), columnQuery(c, qry + "limit ? offset abs(-(4 + ?))", 1, 5));
} finally {
c.destroy();
}
}
/**
* @param idx Column index.
* @param rows Rows.
* @return Column as list.
*/
private static <X> List<X> column(int idx, List<List<?>> rows) {
List<X> res = new ArrayList<>(rows.size());
for (List<?> row : rows) res.add((X) row.get(idx));
return res;
}
/**
* @param key Key to add.
* @param val Optional update value.
* @param conflictTtl Conflict TTL (optional).
* @param conflictExpireTime Conflict expire time (optional).
* @param conflictVer Conflict version (optional).
* @param primary If given key is primary on this mapping.
*/
public void addUpdateEntry(
KeyCacheObject key,
@Nullable Object val,
long conflictTtl,
long conflictExpireTime,
@Nullable GridCacheVersion conflictVer,
boolean primary) {
EntryProcessor<Object, Object, Object> entryProcessor = null;
if (op == TRANSFORM) {
assert val instanceof EntryProcessor : val;
entryProcessor = (EntryProcessor<Object, Object, Object>) val;
}
assert val != null || op == DELETE;
keys.add(key);
if (entryProcessor != null) {
if (entryProcessors == null) entryProcessors = new ArrayList<>();
entryProcessors.add(entryProcessor);
} else if (val != null) {
assert val instanceof CacheObject : val;
if (vals == null) vals = new ArrayList<>();
vals.add((CacheObject) val);
}
hasPrimary |= primary;
// In case there is no conflict, do not create the list.
if (conflictVer != null) {
if (conflictVers == null) {
conflictVers = new ArrayList<>();
for (int i = 0; i < keys.size() - 1; i++) conflictVers.add(null);
}
conflictVers.add(conflictVer);
} else if (conflictVers != null) conflictVers.add(null);
if (conflictTtl >= 0) {
if (conflictTtls == null) {
conflictTtls = new GridLongList(keys.size());
for (int i = 0; i < keys.size() - 1; i++) conflictTtls.add(CU.TTL_NOT_CHANGED);
}
conflictTtls.add(conflictTtl);
}
if (conflictExpireTime >= 0) {
if (conflictExpireTimes == null) {
conflictExpireTimes = new GridLongList(keys.size());
for (int i = 0; i < keys.size() - 1; i++) conflictExpireTimes.add(CU.EXPIRE_TIME_CALCULATE);
}
conflictExpireTimes.add(conflictExpireTime);
}
}