QueryList (DellRoad Stuff Vaadin 7.x Classes 2.5.10 API)

All Known Implementing Classes:

AlwaysInvalidQueryList, SimpleQueryList, WindowQueryList
```
public interface QueryList<T>
```
Cacheable list of Java objects backing an AbstractQueryContainer. Instances contain a list of Java objects (or some portion thereof), and may become invalid over time.

See Also:

AbstractQueryContainer

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`T`	`get(long index)`	Get an item in the list, or throw an exception if this instance is no longer valid or cannot provide the item.
`long`	`size()`	Get the total size of this list.

- Method Detail
  - size
```
long size()
```
    Get the total size of this list.
    For any given QueryList instance, this method is expected to return a the same value if invoked multiple times. Therefore, callers may safely choose to invoke it only once on a given instance and cache the result.
    
    Returns:
    
    total size of list
  - get
```
T get(long index)
throws InvalidQueryListException
```
    Get an item in the list, or throw an exception if this instance is no longer valid or cannot provide the item.
    
    Parameters:
    
    index - index of the item (zero-based)
    
    Returns:
    
    the list item at index
    
    Throws:
    
    IndexOutOfBoundsException - if index is less than zero or greater than or equal to size()
    
    InvalidQueryListException - if this list has become invalid or cannot provide the item