public synchronized <V> V current(EntityCursor<V> cursor) {
try {
return cursor.current();
} 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 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();
}
public void testCursorUpdate() 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();
Integer k;
MyEntity e = new MyEntity();
e.priKey = 1;
e.secKey = 2;
priIndex.put(txn, e);
/* update() with primary entity cursor. */
EntityCursor<MyEntity> entities = priIndex.entities(txn, null);
e = entities.next();
assertNotNull(e);
assertEquals(1, e.priKey);
assertEquals(Integer.valueOf(2), e.secKey);
e.secKey = null;
assertTrue(entities.update(e));
e = entities.current();
assertNotNull(e);
assertEquals(1, e.priKey);
assertEquals(null, e.secKey);
e.secKey = 3;
assertTrue(entities.update(e));
e = entities.current();
assertNotNull(e);
assertEquals(1, e.priKey);
assertEquals(Integer.valueOf(3), e.secKey);
entities.close();
/* update() with primary keys cursor. */
EntityCursor<Integer> keys = priIndex.keys(txn, null);
k = keys.next();
assertNotNull(k);
assertEquals(Integer.valueOf(1), k);
try {
keys.update(2);
fail();
} catch (UnsupportedOperationException expected) {
}
keys.close();
/* update() with secondary entity cursor. */
entities = secIndex.entities(txn, null);
e = entities.next();
assertNotNull(e);
assertEquals(1, e.priKey);
assertEquals(Integer.valueOf(3), e.secKey);
try {
entities.update(e);
fail();
} catch (UnsupportedOperationException expected) {
} catch (IllegalArgumentException expectedForDbCore) {
}
entities.close();
/* update() with secondary keys cursor. */
keys = secIndex.keys(txn, null);
k = keys.next();
assertNotNull(k);
assertEquals(Integer.valueOf(3), k);
try {
keys.update(k);
fail();
} catch (UnsupportedOperationException expected) {
}
keys.close();
txnCommit(txn);
close();
}