Package com.amazonaws.services.dynamodbv2.model

Examples of com.amazonaws.services.dynamodbv2.model.AttributeValueUpdate


                AttributeValue newVersionValue = getAutoGeneratedKeyAttributeValue(method, getterResult);
                key.put(attributeName, newVersionValue);

                if ( forcePut ) {
                    updateValues.put(attributeName,
                            new AttributeValueUpdate().withAction("PUT").withValue(newVersionValue));
                    inMemoryUpdates.add(new ValueUpdate(method, newVersionValue, object));

                    if ( config.getSaveBehavior() != SaveBehavior.CLOBBER ) {
                        // Add an expect clause to make sure that the item
                        // doesn't already exist, since it's supposed to be new
                        ExpectedAttributeValue expected = new ExpectedAttributeValue();
                        expected.setExists(false);
                        expectedValues.put(attributeName, expected);
                    }
                }
            } else {
                AttributeValue currentValue = getSimpleAttributeValue(method, getterResult);
                if ( currentValue == null ) {
                    throw new DynamoDBMappingException("Null or empty value for key: " + method);
                }

                key.put(attributeName, currentValue);

                if ( forcePut ) {
                    updateValues.put(attributeName, new AttributeValueUpdate().withValue(currentValue)
                            .withAction("PUT"));
                }
            }
        }

        /*
         * Next construct an update for every non-key property
         */
        for ( Method method : reflector.getRelevantGetters(clazz) ) {

            // Skip any key methods, since they are handled separately
            if ( keyGetters.contains(method) )
                continue;

            Object getterResult = safeInvoke(method, object);
            String attributeName = reflector.getAttributeName(method);

            /*
             * If this is a versioned field, update it
             */
            if ( reflector.isVersionAttributeGetter(method) ) {
                if ( config.getSaveBehavior() != SaveBehavior.CLOBBER ) {
                    // First establish the expected (current) value for the
                    // update call
                    ExpectedAttributeValue expected = new ExpectedAttributeValue();

                    // For new objects, insist that the value doesn't exist.
                    // For existing ones, insist it has the old value.
                    AttributeValue currentValue = getSimpleAttributeValue(method, getterResult);
                    expected.setExists(currentValue != null);
                    if ( currentValue != null ) {
                        expected.setValue(currentValue);
                    }
                    expectedValues.put(attributeName, expected);
                }

                AttributeValue newVersionValue = getVersionAttributeValue(method, getterResult);
                updateValues
                        .put(attributeName, new AttributeValueUpdate().withAction("PUT").withValue(newVersionValue));
                inMemoryUpdates.add(new ValueUpdate(method, newVersionValue, object));
            }

            /*
             * Otherwise apply the update value for this attribute.
             */
            else  {
                AttributeValue currentValue = getSimpleAttributeValue(method, getterResult);
                if ( currentValue != null ) {
                    updateValues.put(attributeName, new AttributeValueUpdate().withValue(currentValue)
                            .withAction("PUT"));
                } else if ( config.getSaveBehavior() != SaveBehavior.CLOBBER ) {
                    updateValues.put(attributeName, new AttributeValueUpdate().withAction("DELETE"));
                }
            }
        }

        /*
 
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                    .withN(item.get(key).getN())
                    .withNS(item.get(key).getNS())
                    .withS(item.get(key).getS())
                    .withSS(item.get(key).getSS());
            } else {
                updateValues.put(key, new AttributeValueUpdate(item.get(key), "PUT"));
            }
        }
        return updateValues;
    }
View Full Code Here

                @Override
                protected void onKeyAttributeValue(String attributeName,
                        AttributeValue keyAttributeValue) {
                    /* Treat key values as common attribute value updates. */
                    getAttributeValueUpdates().put(attributeName,
                            new AttributeValueUpdate().withValue(keyAttributeValue)
                                    .withAction("PUT"));
                }

                /* Use default implementation of onNonKeyAttribute(...) */

                @Override
                protected void onNullNonKeyAttribute(String attributeName) {
                    /* When doing a force put, we can safely ignore the null-valued attributes. */
                    return;
                }

                @Override
                protected void executeLowLevelRequest() {
                    /* Send a putItem request */
                    doPutItem();
                }
            };
        } else {
            saveObjectHandler = this.new SaveObjectHandler(clazz, object,
                    tableName, finalConfig, saveExpression) {

                @Override
                protected void onKeyAttributeValue(String attributeName,
                        AttributeValue keyAttributeValue) {
                    /* Put it in the key collection which is later used in the updateItem request. */
                    getKeyAttributeValues().put(attributeName, keyAttributeValue);
                }


                @Override
                protected void onNonKeyAttribute(String attributeName,
                        AttributeValue currentValue) {
                    /* If it's a set attribute and the mapper is configured with APPEND_SET,
                     * we do an "ADD" update instead of the default "PUT".
                     */
                    if (getLocalSaveBehavior() == SaveBehavior.APPEND_SET) {
                        if (currentValue.getBS() != null
                                || currentValue.getNS() != null
                                || currentValue.getSS() != null) {
                            getAttributeValueUpdates().put(
                                    attributeName,
                                    new AttributeValueUpdate().withValue(
                                            currentValue).withAction("ADD"));
                            return;
                        }
                    }
                    /* Otherwise, we do the default "PUT" update. */
                    super.onNonKeyAttribute(attributeName, currentValue);
                }

                @Override
                protected void onNullNonKeyAttribute(String attributeName) {
                    /*
                     * If UPDATE_SKIP_NULL_ATTRIBUTES or APPEND_SET is
                     * configured, we don't delete null value attributes.
                     */
                    if (getLocalSaveBehavior() == SaveBehavior.UPDATE_SKIP_NULL_ATTRIBUTES
                            || getLocalSaveBehavior() == SaveBehavior.APPEND_SET) {
                        return;
                    }

                    else {
                        /* Delete attributes that are set as null in the object. */
                        getAttributeValueUpdates()
                                .put(attributeName,
                                        new AttributeValueUpdate()
                                                .withAction("DELETE"));
                    }
                }

                @Override
                protected void executeLowLevelRequest() {
                    UpdateItemResult updateItemResult = doUpdateItem();

                    // The UpdateItem request is specified to return ALL_NEW
                    // attributes of the affected item. So if the returned
                    // UpdateItemResult does not include any ReturnedAttributes,
                    // it indicates the UpdateItem failed silently (e.g. the
                    // key-only-put nightmare -
                    // https://forums.aws.amazon.com/thread.jspa?threadID=86798&tstart=25),
                    // in which case we should re-send a PutItem
                    // request instead.
                    if (updateItemResult.getAttributes() == null
                            || updateItemResult.getAttributes().isEmpty()) {
                        // Before we proceed with PutItem, we need to put all
                        // the key attributes (prepared for the
                        // UpdateItemRequest) into the AttributeValueUpdates
                        // collection.
                        for (String keyAttributeName : getKeyAttributeValues().keySet()) {
                            getAttributeValueUpdates().put(keyAttributeName,
                                    new AttributeValueUpdate()
                                            .withValue(getKeyAttributeValues().get(keyAttributeName))
                                            .withAction("PUT"));
                        }

                        doPutItem();
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                // This was added in for context before calling
                // transformAttributes, but isn't actually being changed.
                continue;
            }

            AttributeValueUpdate update = updateValues.get(entry.getKey());
            if (update != null) {
                update.getValue()
                    .withB( entry.getValue().getB() )
                    .withBS(entry.getValue().getBS())
                    .withN( entry.getValue().getN() )
                    .withNS(entry.getValue().getNS())
                    .withS( entry.getValue().getS() )
                    .withSS(entry.getValue().getSS());
            } else {
                updateValues.put(entry.getKey(),
                                 new AttributeValueUpdate(entry.getValue(),
                                                          "PUT"));
            }
        }

        return updateValues;
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         *            The name of the non-key attribute.
         * @param currentValue
         *            The updated value of the given attribute.
         */
        protected void onNonKeyAttribute(String attributeName, AttributeValue currentValue) {
            updateValues.put(attributeName, new AttributeValueUpdate()
                    .withValue(currentValue).withAction("PUT"));
        }
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        private void onAutoGenerateAssignableKey(Method method, String attributeName) {
            AttributeValue newVersionValue = getAutoGeneratedKeyAttributeValue(method, null);

            updateValues.put(attributeName,
                    new AttributeValueUpdate().withAction("PUT").withValue(newVersionValue));
            inMemoryUpdates.add(new ValueUpdate(method, newVersionValue, object));

            if ( getLocalSaveBehavior() != SaveBehavior.CLOBBER
                    && !internalExpectedValueAssertions.containsKey(attributeName)) {
                // Add an expect clause to make sure that the item
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                internalExpectedValueAssertions.put(attributeName, expected);
            }

            AttributeValue newVersionValue = getVersionAttributeValue(method, getterResult);
            updateValues
                    .put(attributeName, new AttributeValueUpdate().withAction("PUT").withValue(newVersionValue));
            inMemoryUpdates.add(new ValueUpdate(method, newVersionValue, object));
        }
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                @Override
                protected void onKeyAttributeValue(String attributeName,
                        AttributeValue keyAttributeValue) {
                    /* Treat key values as common attribute value updates. */
                    getAttributeValueUpdates().put(attributeName,
                            new AttributeValueUpdate().withValue(keyAttributeValue)
                                    .withAction("PUT"));
                }

                /* Use default implementation of onNonKeyAttribute(...) */

                @Override
                protected void onNullNonKeyAttribute(String attributeName) {
                    /* When doing a force put, we can safely ignore the null-valued attributes. */
                    return;
                }

                @Override
                protected void executeLowLevelRequest(boolean onlyKeyAttributeSpecified) {
                    /* Send a putItem request */
                    Map<String, AttributeValue> attributeValues =
                            convertToItem(getAttributeValueUpdates());
                   
                    attributeValues = transformAttributes(
                        toParameters(attributeValues, this.clazz, finalConfig));
                    PutItemRequest req = new PutItemRequest()
                        .withTableName(getTableName())
                        .withItem(attributeValues)
                        .withExpected(getExpectedAttributeValues())
                        .withRequestMetricCollector(
                            finalConfig.getRequestMetricCollector());
                    db.putItem(applyUserAgent(req));
                }
            };
        } else {
            saveObjectHandler = this.new SaveObjectHandler(clazz, object,
                    tableName, finalConfig.getSaveBehavior(), userProvidedExpectedValues) {

                @Override
                protected void onKeyAttributeValue(String attributeName,
                        AttributeValue keyAttributeValue) {
                    /* Put it in the key collection which is later used in the updateItem request. */
                    getKeyAttributeValues().put(attributeName, keyAttributeValue);
                }


                @Override
                protected void onNonKeyAttribute(String attributeName,
                        AttributeValue currentValue) {
                    /* If it's a set attribute and the mapper is configured with APPEND_SET,
                     * we do an "ADD" update instead of the default "PUT".
                     */
                    if (getLocalSaveBehavior() == SaveBehavior.APPEND_SET) {
                        if (currentValue.getBS() != null
                                || currentValue.getNS() != null
                                || currentValue.getSS() != null) {
                            getAttributeValueUpdates().put(
                                    attributeName,
                                    new AttributeValueUpdate().withValue(
                                            currentValue).withAction("ADD"));
                            return;
                        }
                    }
                    /* Otherwise, we do the default "PUT" update. */
                    super.onNonKeyAttribute(attributeName, currentValue);
                }

                @Override
                protected void onNullNonKeyAttribute(String attributeName) {
                    /*
                     * If UPDATE_SKIP_NULL_ATTRIBUTES or APPEND_SET is
                     * configured, we don't delete null value attributes.
                     */
                    if (getLocalSaveBehavior() == SaveBehavior.UPDATE_SKIP_NULL_ATTRIBUTES
                            || getLocalSaveBehavior() == SaveBehavior.APPEND_SET) {
                        return;
                    }

                    else {
                        /* Delete attributes that are set as null in the object. */
                        getAttributeValueUpdates()
                                .put(attributeName,
                                        new AttributeValueUpdate()
                                                .withAction("DELETE"));
                    }
                }

                @Override
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                // This was added in for context before calling
                // transformAttributes, but isn't actually being changed.
                continue;
            }

            AttributeValueUpdate update = updateValues.get(entry.getKey());
            if (update != null) {
                update.getValue()
                    .withB( entry.getValue().getB() )
                    .withBS(entry.getValue().getBS())
                    .withN( entry.getValue().getN() )
                    .withNS(entry.getValue().getNS())
                    .withS( entry.getValue().getS() )
                    .withSS(entry.getValue().getSS());
            } else {
                updateValues.put(entry.getKey(),
                                 new AttributeValueUpdate(entry.getValue(),
                                                          "PUT"));
            }
        }

        return updateValues;
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         *            The name of the non-key attribute.
         * @param currentValue
         *            The updated value of the given attribute.
         */
        protected void onNonKeyAttribute(String attributeName, AttributeValue currentValue) {
            updateValues.put(attributeName, new AttributeValueUpdate()
                    .withValue(currentValue).withAction("PUT"));
        }
View Full Code Here

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