com.vaadin.data.ContainerHelpers API 7.7.46 | Vaadin

com.vaadin.data.

java.lang.Object
- com.vaadin.data.ContainerHelpers

All Implemented Interfaces:

Serializable
```
public class ContainerHelpers
extends Object
implements Serializable
```
Contains helper methods for containers that can be used to ease development of containers in Vaadin.

Since:

7.0

See Also:

Serialized Form

Constructor Summary

Constructors
Constructor Description

ContainerHelpers()

Method Summary

All Methods
Modifier and Type	Method	Description
`static List<?>`	`getItemIdsUsingGetIdByIndex(int startIndex, int numberOfIds, Container.Indexed container)`	Get a range of item ids from the container using `Container.Indexed.getIdByIndex(int)`.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - ContainerHelpers
```
public ContainerHelpers()
```
- Method Detail
  - getItemIdsUsingGetIdByIndex
```
public static List<?> getItemIdsUsingGetIdByIndex(int startIndex,
                                                  int numberOfIds,
                                                  Container.Indexed container)
```
    Get a range of item ids from the container using Container.Indexed.getIdByIndex(int). This is just a helper method to aid developers to quickly add the required functionality to a Container during development. This should not be used in a "finished product" unless fetching an id for an index is very inexpensive because a separate request will be performed for each index in the range.
    
    Parameters:
    
    startIndex - index of the first item id to get
    
    numberOfIds - the number of consecutive items whose ids should be returned
    
    container - the container from which the items should be fetched
    
    Returns:
    
    A list of item ids in the range specified