DateTimeFormat not supporting

[jAddict7]

In repository,
public interface TestRepository extends PagingAndSortingRepository<Test, String>{
public Page findByNameAndDate(@param("name") String name,
@param("date") @DateTimeFormat(iso = ISO.DATE) Date date, Pageable pageable);
}

Here Date not getting converted to, whenever I pass its showing null cannot be accepted and also I tried formatting with @DateTimeFormat(iso = ISO.DATE, pattern = "yyyy-MM-dd'T'HH:mm:ss.SSS'Z'"). But not working.
My stackoverfow link --> http://stackoverflow.com/questions/24096924/how-to-format-param-string-in-spring-data-rest

[michaellavelle]

Hi

DynamoDB stores dates as Strings, so if you have a date attribute as part of your date model you can either represent them as Strings in your data model ( as I think you are doing currently ), or you can represent them as Dates, and configure Spring-Data-DynamoDB so that it maps the Dates to Strings. This can be done using Custom Marshallers from amazon-aws-sdk, and support has been added to handle this in the Spring Data DynamoDB module.

You can read about marshallers here : http://java.awsblog.com/post/Tx1K7U34AOZBLJ2/Using-Custom-Marshallers-to-Store-Complex-Objects-in-Amazon-DynamoDB

Note that this marshalling is separate from any mapping that you may be requiring Spring-Data-Rest to perform from JSON to objects - for this you will still need the @DateTimeFormat annotation.

If you want to represent the date as a java.util.Date in your data model, simply annotate the getter for the attribute in your domain class with @DynamoDBMarshalling, and pass in the class of marshaller you wish to use, eg:

@DynamoDBRangeKey(attributeName = "ReplyDateTime")
@DynamoDBMarshalling(marshallerClass=DefaultDynamoDBDateMarshaller.class)
public Date getReplyDateTime() {
...

DefaultDynamoDBDateMarshaller here is a support class from Spring-Data-DynamoDB, but you can implement your own for custom date/string mapping.

With this in place, you can now change your repository finder methods so they expect Date parameters rather than Strings:

public Page findByReplyDateTimeAfter(Date replyDateTime,Pageable pageable);

Hope this helps,

Cheers,

Michael

[jAddict7]

Thank you Michael. I am unable to use DynamoDBRangeKey, Is there any working example, am getting exception when I include range key annotation(@DynamoDBRangeKey). Exception caused is,

Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'testRepository': Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: No method annotated by DynamoDBHashKey within type java.lang.String!

java.lang.IllegalArgumentException: No method annotated by DynamoDBHashKey within type java.lang.String!

[michaellavelle]

There is a working example of range key at
https://github.com/michaellavelle/spring-data-dynamodb-demo

If you are using a hash and range key table ( composite id) , in order to use Spring-Data-Dynamodb, you'll need to create a separate composite id class with getters and setters for the component parts, where the getters are annotated with @DynamoDBHashKey and @DynamoDBRangeKey respectively.

( eg https://github.com/michaellavelle/spring-data-dynamodb-demo/blob/master/src/main/java/org/socialsignin/springframework/data/dynamodb/demo/domain/ReplyId.java )

Then setup your domain class so that it has an id field whose type is this new composite id class, and annotate the field with @id.

(eg. https://github.com/michaellavelle/spring-data-dynamodb-demo/blob/master/src/main/java/org/socialsignin/springframework/data/dynamodb/demo/domain/Reply.java )

Finally, ensure you have getters and setters for the component parts of the composite key in the domain class, with the getters annotated with @DynamoDBHashKey and @DynamoDBRangeKey ( the same methods as you created in the Id class ), but modify these methods so they manipulate the corresponding values of the Id field.

https://github.com/michaellavelle/spring-data-dynamodb-demo/blob/master/src/main/java/org/socialsignin/springframework/data/dynamodb/demo/domain/Reply.java