public synchronized <V> boolean delete(EntityCursor<V> cursor) {
try {
return cursor.delete();
} catch (DatabaseException e) {
throw getPersistenceManager().convertDatabaseException(e);
}
}
public void testUninitializedCursor() throws DatabaseException {
open();
PrimaryIndex<Integer, MyEntity> priIndex = store.getPrimaryIndex(Integer.class, MyEntity.class);
Transaction txn = txnBeginCursor();
MyEntity e = new MyEntity();
e.priKey = 1;
e.secKey = 1;
priIndex.put(txn, e);
EntityCursor<MyEntity> entities = priIndex.entities(txn, null);
try {
entities.nextDup();
fail();
} catch (IllegalStateException expected) {
}
try {
entities.prevDup();
fail();
} catch (IllegalStateException expected) {
}
try {
entities.current();
fail();
} catch (IllegalStateException expected) {
}
try {
entities.delete();
fail();
} catch (IllegalStateException expected) {
}
try {
entities.update(e);
fail();
} catch (IllegalStateException expected) {
}
try {
entities.count();
fail();
} catch (IllegalStateException expected) {
}
entities.close();
txnCommit(txn);
close();
}
public void testDeleteFromSubIndex() throws DatabaseException {
open();
PrimaryIndex<Integer, MyEntity> priIndex = store.getPrimaryIndex(Integer.class, MyEntity.class);
SecondaryIndex<Integer, Integer, MyEntity> secIndex =
store.getSecondaryIndex(priIndex, Integer.class, "secKey");
Transaction txn = txnBegin();
MyEntity e = new MyEntity();
e.secKey = 1;
e.priKey = 1;
priIndex.put(txn, e);
e.priKey = 2;
priIndex.put(txn, e);
e.priKey = 3;
priIndex.put(txn, e);
e.priKey = 4;
priIndex.put(txn, e);
txnCommit(txn);
EntityIndex<Integer, MyEntity> subIndex = secIndex.subIndex(1);
txn = txnBeginCursor();
e = subIndex.get(txn, 1, null);
assertEquals(1, e.priKey);
assertEquals(Integer.valueOf(1), e.secKey);
e = subIndex.get(txn, 2, null);
assertEquals(2, e.priKey);
assertEquals(Integer.valueOf(1), e.secKey);
e = subIndex.get(txn, 3, null);
assertEquals(3, e.priKey);
assertEquals(Integer.valueOf(1), e.secKey);
e = subIndex.get(txn, 5, null);
assertNull(e);
boolean deleted = subIndex.delete(txn, 1);
assertTrue(deleted);
assertNull(subIndex.get(txn, 1, null));
assertNotNull(subIndex.get(txn, 2, null));
EntityCursor<MyEntity> cursor = subIndex.entities(txn, null);
boolean saw4 = false;
for (MyEntity e2 = cursor.first(); e2 != null; e2 = cursor.next()) {
if (e2.priKey == 3) {
cursor.delete();
}
if (e2.priKey == 4) {
saw4 = true;
}
}
cursor.close();
assertTrue(saw4);
assertNull(subIndex.get(txn, 1, null));
assertNull(subIndex.get(txn, 3, null));
assertNotNull(subIndex.get(txn, 2, null));
assertNotNull(subIndex.get(txn, 4, null));
txnCommit(txn);
close();
}
public void testCursorDelete() throws DatabaseException {
open();
PrimaryIndex<Integer, MyEntity> priIndex = store.getPrimaryIndex(Integer.class, MyEntity.class);
SecondaryIndex<Integer, Integer, MyEntity> secIndex =
store.getSecondaryIndex(priIndex, Integer.class, "secKey");
Transaction txn = txnBeginCursor();
/* delete() with primary and secondary entities cursor. */
for (EntityIndex index : new EntityIndex[] {priIndex, secIndex}) {
MyEntity e = new MyEntity();
e.priKey = 1;
e.secKey = 1;
priIndex.put(txn, e);
e.priKey = 2;
priIndex.put(txn, e);
EntityCursor<MyEntity> cursor = index.entities(txn, null);
e = cursor.next();
assertNotNull(e);
assertEquals(1, e.priKey);
e = cursor.current();
assertNotNull(e);
assertEquals(1, e.priKey);
assertTrue(cursor.delete());
assertTrue(!cursor.delete());
assertNull(cursor.current());
e = cursor.next();
assertNotNull(e);
assertEquals(2, e.priKey);
e = cursor.current();
assertNotNull(e);
assertEquals(2, e.priKey);
assertTrue(cursor.delete());
assertTrue(!cursor.delete());
assertNull(cursor.current());
e = cursor.next();
assertNull(e);
if (index == priIndex) {
e = new MyEntity();
e.priKey = 2;
e.secKey = 1;
assertTrue(!cursor.update(e));
}
cursor.close();
}
/* delete() with primary and secondary keys cursor. */
for (EntityIndex index : new EntityIndex[] {priIndex, secIndex}) {
MyEntity e = new MyEntity();
e.priKey = 1;
e.secKey = 1;
priIndex.put(txn, e);
e.priKey = 2;
priIndex.put(txn, e);
EntityCursor<Integer> cursor = index.keys(txn, null);
Integer k = cursor.next();
assertNotNull(k);
assertEquals(1, k.intValue());
k = cursor.current();
assertNotNull(k);
assertEquals(1, k.intValue());
assertTrue(cursor.delete());
assertTrue(!cursor.delete());
assertNull(cursor.current());
int expectKey = (index == priIndex) ? 2 : 1;
k = cursor.next();
assertNotNull(k);
assertEquals(expectKey, k.intValue());
k = cursor.current();
assertNotNull(k);
assertEquals(expectKey, k.intValue());
assertTrue(cursor.delete());
assertTrue(!cursor.delete());
assertNull(cursor.current());
k = cursor.next();
assertNull(k);
cursor.close();
}
txnCommit(txn);
close();
}