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## org.apache.cayenne.util
Class ListResponse

    java.lang.Object
      org.apache.cayenne.util.ListResponse

All Implemented Interfaces:
  Serializable, QueryResponse

Direct Known Subclasses:
  IncrementalListResponse

    public class ListResponse

extends Object
implements QueryResponse, Serializable

A QueryResponse optimized to hold a single object or data row list.

Since:
  1.2
Author:
  Andrus Adamchik
See Also:
  Serialized Form

Field Summary
`protected int` | `currentIndex`
`protected List` | `objectList`

Constructor Summary
`ListResponse()` Creates an empty response.
`ListResponse(List objectList)`
`ListResponse(Object object)`

Method Summary
`List` | `currentList()` Returns a List under the current iterator position.
`int[]` | `currentUpdateCount()` Returns an update count under the current iterator position.
`List` | `firstList()` A utility method for quickly retrieving the first list in the response.
`int[]` | `firstUpdateCount()` A utility method for quickly retrieving the first update count from the response.
`boolean` | `isList()` Returns whether current iteration result is a list or an update count.
`boolean` | `next()` Rewinds response iterator to the next result, returning true if it is available.
`void` | `reset()` Restarts response iterator.
`int` | `size()` Returns a number of results in the response.

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

Field Detail

### objectList

    protected List objectList

### currentIndex

    protected transient int currentIndex

Constructor Detail

### ListResponse

    public ListResponse()

  Creates an empty response.

### ListResponse

    public ListResponse(Object object)

### ListResponse

    public ListResponse(List objectList)

Method Detail

### size

    public int size()

  Description copied from interface: `QueryResponse`
  Returns a number of results in the response.

  Specified by:
    `size` in interface `QueryResponse`

### isList

    public boolean isList()

  Description copied from interface: `QueryResponse`
  Returns whether current iteration result is a list or an update count.

  Specified by:
    `isList` in interface `QueryResponse`

### currentList

    public List currentList()

  Description copied from interface: `QueryResponse`
  Returns a List under the current iterator position. Use `QueryResponse.isList()` to check the result type before calling this method.

  Specified by:
    `currentList` in interface `QueryResponse`

### currentUpdateCount

    public int[] currentUpdateCount()

  Description copied from interface: `QueryResponse`
  Returns an update count under the current iterator position. Returned value is an int[] to accomodate batch queries. For a regular update result, the value will be an int[1]. Use `QueryResponse.isList()` to check the result type before calling this method.

  Specified by:
    `currentUpdateCount` in interface `QueryResponse`

### next

    public boolean next()

  Description copied from interface: `QueryResponse`
  Rewinds response iterator to the next result, returning true if it is available.

  Specified by:
    `next` in interface `QueryResponse`

### reset

    public void reset()

  Description copied from interface: `QueryResponse`
  Restarts response iterator.

  Specified by:
    `reset` in interface `QueryResponse`

### firstList

    public List firstList()

  Description copied from interface: `QueryResponse`
  A utility method for quickly retrieving the first list in the response. Returns null if the query has no lists. Note that this method resets current iterator to an undefined state.

  Specified by:
    `firstList` in interface `QueryResponse`

### firstUpdateCount

    public int[] firstUpdateCount()

  Description copied from interface: `QueryResponse`
  A utility method for quickly retrieving the first update count from the response. Note that this method resets current iterator to an undefined state.

  Specified by:
    `firstUpdateCount` in interface `QueryResponse`

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