@Test
public void deleteHashRangeItemTest() {
putItemWithHashKeyAndRangeKey();
putItemWithHashKeyAndRangeKeyOverwriteItem();
String hashCode = "hash2";
String rangeCode = "range2";
TestClassWithHashRangeKey value =
mapper.load(TestClassWithHashRangeKey.class, hashCode, rangeCode);
Assert.assertNotNull("Value not found.", value);
Assert.assertEquals("Wrong hashCode.", hashCode, value.getHashCode());
Assert.assertEquals("Wrong rangeCode.", rangeCode, value.getRangeCode());
Assert.assertEquals("Wrong stringData.", "string2b", value.getStringData());
Assert.assertEquals("Wrong intData.", 22, value.getIntData());
Assert.assertEquals(
"Wrong stringSetData.",
set("stringSetVal2b1", "stringSetVal2b2"),
value.getStringSetData());
Assert.assertEquals("Wrong numberSetData.", set(5, 6), value.getNumberSetData());
mapper.delete(value);
TestClassWithHashRangeKey value2 =
mapper.load(TestClassWithHashRangeKey.class, hashCode, rangeCode);
Assert.assertNull("Value2 should not be found.", value2);
}
private void deleteNodeHistoryItem(String nid, String time) {
DynamoDBMapperConfig config =
new DynamoDBMapperConfig(DynamoDBMapperConfig.ConsistentReads.CONSISTENT);
NodeHistory updatedItem;
NodeHistory deletedItem;
if (time != null) {
updatedItem = mapper.load(NodeHistory.class, nid, time, config);
mapper.delete(updatedItem);
deletedItem =
mapper.load(NodeHistory.class, updatedItem.getNodeID(), updatedItem.getTime(), config);
} else {
updatedItem = mapper.load(NodeHistory.class, nid, config);
mapper.delete(updatedItem);
deletedItem = mapper.load(NodeHistory.class, updatedItem.getNodeID(), config);
}
if (deletedItem == null) System.out.println("Done - The item is deleted.");
else System.out.println("Fail - The item is still remained.");
}
/*
* Deletes the specified user and all of its attribute/value pairs.
*/
public static void deleteUser(UserPreference deleteUserPreference) {
AmazonDynamoDBClient ddb = LoginActivity.clientManager.ddb();
DynamoDBMapper mapper = new DynamoDBMapper(ddb);
try {
mapper.delete(deleteUserPreference);
} catch (AmazonServiceException ex) {
LoginActivity.clientManager.wipeCredentialsOnAuthError(ex);
}
}
public void removeItemFromCart(Long cartId) {
DynamoDBMapper mapper = this.conn.getMapper();
DynamoDBScanExpression scanExpression = new DynamoDBScanExpression();
Map<String, Condition> scanFilter = new HashMap<String, Condition>();
Condition scanCondition =
new Condition()
.withComparisonOperator(ComparisonOperator.EQ.toString())
.withAttributeValueList(new AttributeValue().withN(cartId.toString()));
scanFilter.put("CartId", scanCondition);
scanExpression.setScanFilter(scanFilter);
System.out.println("Going to retrieve item.");
PaginatedScanList<CartItem> items = mapper.scan(CartItem.class, scanExpression);
System.out.println("Number of items retrived. " + items.size());
System.out.println("Going to remove a cartItem with productId: " + items.get(0).getProductId());
mapper.delete(items.get(0));
}
@Test
public void deleteHashItemTest() {
putItemWithHashKey();
putItemWithHashKeyOverwriteItem();
String code = "hash1";
TestClassWithHashKey value = mapper.load(TestClassWithHashKey.class, code);
Assert.assertNotNull("Value not found.", value);
Assert.assertEquals("Wrong code.", code, value.getCode());
Assert.assertEquals("Wrong stringData.", "string1", value.getStringData());
Assert.assertEquals("Wrong intData.", 1, value.getIntData());
Assert.assertEquals(
"Wrong stringSetData.", set("stringSetVal1", "stringSetVal2"), value.getStringSetData());
Assert.assertEquals("Wrong numberSetData.", set(1, 2), value.getNumberSetData());
mapper.delete(value);
TestClassWithHashKey value2 = mapper.load(TestClassWithHashKey.class, code);
Assert.assertNull("Value2 should not be found.", value2);
}