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

Package com.amazonaws.services.dynamodbv2.model

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

com.amazonaws.services.dynamodbv2.model.AttributeValue

Represents the data for an attribute. You can set one, and only one, of the elements.

                public AttributeValue marshall(Object obj) {
                    List<String> attributes = new ArrayList<String>();
                    for ( Object o : (Set<?>) obj ) {
                        attributes.add(String.valueOf(o));
                    }
                    return new AttributeValue().withSS(attributes);
                }
            };
        }
    }

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                    if ( s3link.getBucketName() == null || s3link.getKey() == null ) {
                        // insufficient S3 resource specification
                        return null;
                    }
                    String json = s3link.toJson();
                    return new AttributeValue().withS(json);
                }
            };
        } else {
            throw new DynamoDBMappingException("Unsupported type: " + returnType + " for " + getter);
        }

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        Map<String, AttributeValue> key = new HashMap<String, AttributeValue>();
        for (Method keyGetter : reflector.getPrimaryKeyGetters(clazz)) {
            Object getterResult =
                    ReflectionUtils.safeInvoke(keyGetter, keyObject);


            AttributeValue keyAttributeValue =
                    converter.convert(keyGetter, getterResult);


            if (keyAttributeValue == null) {
                throw new DynamoDBMappingException(
                        "Null key found for " + keyGetter);

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                if ( reflector.isVersionAttributeGetter(method) ) {
                    Object getterResult = ReflectionUtils.safeInvoke(method, object);
                    String attributeName = reflector.getAttributeName(method);


                    ExpectedAttributeValue expected = new ExpectedAttributeValue();
                    AttributeValue currentValue = converter.convert(method, getterResult);
                    expected.setExists(currentValue != null);
                    if ( currentValue != null )
                        expected.setValue(currentValue);
                    internalAssertions.put(attributeName, expected);
                    break;

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                Object getterResult =
                        ReflectionUtils.safeInvoke(method, toWrite);


                String attributeName = reflector.getAttributeName(method);


                AttributeValue currentValue = null;
                if ( getterResult == null && reflector.isAssignableKey(method) ) {
                    currentValue = getAutoGeneratedKeyAttributeValue(converter, method);
                    inMemoryUpdates.add(new ValueUpdate(method, currentValue, toWrite, converter));
                } else {
                    currentValue = converter.convert(method, getterResult);

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     */
    private Map<String, AttributeValue> convertToItem(Map<String, AttributeValueUpdate> putValues) {
        Map<String, AttributeValue> map = new HashMap<String, AttributeValue>();
        for ( Entry<String, AttributeValueUpdate> entry : putValues.entrySet() ) {
            String attributeName = entry.getKey();
            AttributeValue attributeValue = entry.getValue().getValue();
            String attributeAction = entry.getValue().getAction();


            /*
             * AttributeValueUpdate allows nulls for its values, since they are
             * semantically meaningful. AttributeValues never have null values.

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                if ( getterResult == null && reflector.isAssignableKey(method) ) {
                    onAutoGenerateAssignableKey(method, attributeName);
                }


                else {
                    AttributeValue newAttributeValue = converter.convert(method, getterResult);
                    if ( newAttributeValue == null ) {
                        throw new DynamoDBMappingException(
                                "Null or empty value for key: " + method);
                    }


                    if ( newAttributeValue.getS() == null
                            && newAttributeValue.getN() == null
                            && newAttributeValue.getB() == null) {


                        throw new DynamoDBMappingException(
                                "Keys must be scalar values (String, Number, "
                                + "or Binary). Got " + newAttributeValue
                                + " for key " + method);
                    }


                    onKeyAttributeValue(attributeName, newAttributeValue);
                }
            }


            /*
             * 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 = ReflectionUtils.safeInvoke(method, object);
                String attributeName = reflector.getAttributeName(method);


                /*
                 * If this is a versioned field, update it
                 */
                if ( reflector.isVersionAttributeGetter(method) ) {
                    onVersionAttribute(method, getterResult, attributeName);
                }


                /*
                 * Otherwise apply the update value for this attribute.
                 */
                else  {
                    AttributeValue currentValue = converter.convert(method, getterResult);
                    if ( currentValue != null ) {
                        onNonKeyAttribute(attributeName, currentValue);
                    } else {
                        onNullNonKeyAttribute(attributeName);
                    }

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            return db.putItem(applyUserAgent(req));
        }


        private void onAutoGenerateAssignableKey(Method method, String attributeName) {
            AttributeValue newVersionValue = getAutoGeneratedKeyAttributeValue(converter, method);


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

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                // 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 = converter.convert(method, getterResult);
                expected.setExists(currentValue != null);
                if ( currentValue != null ) {
                    expected.setValue(currentValue);
                }
                internalExpectedValueAssertions.put(attributeName, expected);
            }


            Object newVersion = incrementor.increment(method, getterResult);
            AttributeValue newVersionValue = converter.convert(method, newVersion);
            updateValues.put(attributeName, new AttributeValueUpdate()
                        .withAction("PUT")
                        .withValue(newVersionValue));


            inMemoryUpdates.add(new ValueUpdate(method, newVersionValue, object, converter));

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            for (Method getter : reflector.getRelevantGetters(clazz)) {
                Object getterResult =
                        ReflectionUtils.safeInvoke(getter, object);


                if (getterResult != null) {
                    AttributeValue value = convert(getter, getterResult);
                    if (value != null) {
                        String name = reflector.getAttributeName(getter);
                        result.put(name, value);
                    }
                }

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