spring-data-mongodb-datatables

Datatables binding for spring-data-mongodb.

This is a sample project showing how it works.

This project is inspired from darrachequesne/spring-data-jpa-datatables, which works with spring-data-jpa.

Deprecation

Because Damien now has darrachequesne/spring-data-mongodb-datatables released, and this project has its own modification on DataTablesInput, I think it is time to mark it as @Deprecated now.

As Damien’s implementation does not implement Aggregation, this repository will remain open , but will NOT be maintained anymore.

If you need similar features (customizable query with spring-data) but don’t use DataTables, my new project eaphone-spring-data-query will be another choice.

Usage

Basic usage is the same with darrachequesne/spring-data-jpa-datatables

Introduce into project

TODO Not uploaded to any public Maven Repository yet.

<dependency>
    <groupId>com.eaphone</groupId>
    <artifactId>spring-data-mongodb-datatables</artifactId>
    <version>0.3.2-SNAPSHOT</version>
</dependency>

Initialization

In any @Configuration class, add:

@EnableMongoRepositories(repositoryFactoryBeanClass = DataTablesRepositoryFactoryBean.class)

Write new Repo

Just as spring-data-mongodb does:

@Repository
public interface UserRepository extends DataTablesRepository<Order, String> {
}

Note that DataTablesRepository extends PagingAndSortingRepository so it already contains functionalities like findAll(Pageable) and save().

Expose fields on view

@Data
@Document(collection = "order")
public class Order {
    @Id
    @JsonView(DataTablesOutput.View.class)
    private String id;
    @JsonFormat(pattern = "yyyy-MM-dd")
    @JsonView(DataTablesOutput.View.class)
    private Date date;
    @JsonView(DataTablesOutput.View.class)
    private String orderNumber;
    @JsonView(DataTablesOutput.View.class)
    private boolean isValid;
    @JsonView(DataTablesOutput.View.class)
    private int amount;
    @JsonView(DataTablesOutput.View.class)
    private double price;
}

On the browser side

Include jquery.spring-friendly.js so column[0][data] is changed to column[0].data and is correctly parsed by SpringMVC.

On the Server Side

The repository has the following methods:

• Using Query
  • DataTablesOutput<T> findAll(DataTablesInput input);
  • DataTablesOutput<T> findAll(DataTablesInput input, Criteria additionalCriteria);
  • DataTablesOutput<T> findAll(DataTablesInput input, Criteria additionalCriteria, Criteria preFilteringCriteria);
• Using Aggregation
  • <View> DataTablesOutput<View> findAll(Class<View> classOfView, DataTablesInput input, AggregationOperation... operations);
  • <View> DataTablesOutput<View> findAll(Class<View> classOfView, DataTablesInput input, Collection<? extends AggregationOperation> operations);

Examples

@GetMapping("/data/orders")
public DataTablesOutput<Order> getOrders(@Valid DataTablesInput input) {
    return repo.findAll(input);
}

Or:

import static org.springframework.data.mongodb.core.aggregation.Aggregation.*;
@GetMapping("/")
public DataTablesOutput<DataView> getAll(@Valid DataTablesInput input) {
    return repo.findAll(DataView.class,
        input,
        // just provide your aggregation pipeline here
        lookup("user", "userId", "id", "user"),
        unwind("user"),
        project()
            .and("user.sex").as("user.gender")
            .andInclude(
                "timestamp", "createTime", "sensorType",
                "batchId", "source", "beginTime",
                "endTime", "text", "url", "value")
            );
}

Filter

In addition to DataTables’ columns[x].search parameters, columns[x].filter is a new way to define more complex queries.

A more detailed document in Simplified Chinese (zh_CN) is provided here.

Future Plans

In the near future:

• In Criteria converting, more types (Date) must be handled, as currently only String and Boolean are handled
• More tests (and verifications)

Known Issues

• $match, $sum: 1, $limit and $skip are attached to given aggregation pipeline so in some cases the logic may be broken.
• Text search is simply converted to Regular Expressions with Literal flag and may contain some logical flaws.
• Global search is NOT implementd yet (as discussed in #1).
• Querydsl support is REMOVED, as my own project does not use it.