/**
* @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;
}
/** {@inheritDoc} */
@Override
public <T extends Extension> void registerExtension(Class<T> extensionItf, T extensionImpl) {
List<Object> list = extensionsCollector.get(extensionItf);
if (list == null) {
list = new ArrayList<>();
extensionsCollector.put(extensionItf, list);
}
list.add(extensionImpl);
}
/**
* 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();
}
}
/** @return Map extension interface to array of implementation. */
public Map<Class<?>, Object[]> createExtensionMap() {
Map<Class<?>, Object[]> extensions = new HashMap<>(extensionsCollector.size() * 2, 0.5f);
for (Map.Entry<Class<?>, List<Object>> entry : extensionsCollector.entrySet()) {
Class<?> extensionItf = entry.getKey();
List<Object> implementations = entry.getValue();
Object[] implArr = (Object[]) Array.newInstance(extensionItf, implementations.size());
implArr = implementations.toArray(implArr);
extensions.put(extensionItf, implArr);
}
return extensions;
}
/** @throws Exception If failed. */
public void testGroupIndexOperations() throws Exception {
IgniteCache<Integer, GroupIndexTestValue> c =
ignite(0)
.getOrCreateCache(cacheConfig("grp", false, Integer.class, GroupIndexTestValue.class));
try {
// Check group index usage.
String qry = "select 1 from GroupIndexTestValue ";
String plan = columnQuery(c, "explain " + qry + "where a = 1 and b > 0").get(0).toString();
info("Plan: " + plan);
assertTrue(plan.contains("grpIdx"));
// Sorted list
List<GroupIndexTestValue> list =
F.asList(
new GroupIndexTestValue(0, 0),
new GroupIndexTestValue(0, 5),
new GroupIndexTestValue(1, 1),
new GroupIndexTestValue(1, 3),
new GroupIndexTestValue(2, -1),
new GroupIndexTestValue(2, 2));
// Fill cache.
for (int i = 0; i < list.size(); i++) c.put(i, list.get(i));
// Check results.
assertEquals(1, columnQuery(c, qry + "where a = 1 and b = 1").size());
assertEquals(2, columnQuery(c, qry + "where a = 1 and b < 4").size());
assertEquals(2, columnQuery(c, qry + "where a = 1 and b <= 3").size());
assertEquals(1, columnQuery(c, qry + "where a = 1 and b < 3").size());
assertEquals(2, columnQuery(c, qry + "where a = 1 and b > 0").size());
assertEquals(1, columnQuery(c, qry + "where a = 1 and b > 1").size());
assertEquals(2, columnQuery(c, qry + "where a = 1 and b >= 1").size());
assertEquals(4, columnQuery(c, qry + "where a > 0 and b > 0").size());
assertEquals(4, columnQuery(c, qry + "where a > 0 and b >= 1").size());
assertEquals(3, columnQuery(c, qry + "where a > 0 and b > 1").size());
} finally {
c.destroy();
}
}
/**
* Adds component.
*
* @param c Component to add.
* @return Added manager.
*/
private <C extends HadoopComponent> C add(C c) {
components.add(c);
return c;
}
