Package org.apache.cayenne.access.jdbc

# Class ConnectionAwareResultIterator<T>

java.lang.Object
org.apache.cayenne.access.jdbc.ConnectionAwareResultIterator<T>

All Implemented Interfaces:
  `AutoCloseable`, `Iterable<T>`, `ResultIterator<T>`

public class ConnectionAwareResultIterator<T> extends Object implements ResultIterator<T>
A `ResultIterator` wrapper that handles closing a connection. Also internally counts processed rows, mostly for the benefit of subclasses. Subclasses are used in iterators that are returned to the end users and are not implicitly managed by Cayenne.

Since:
  4.0

- ## Field Summary

  Fields
  Modifier and Type
  Field
  Description
  `protected int`
  `rowCounter`

- ## Constructor Summary

  Constructors
  Constructor
  Description
  `ConnectionAwareResultIterator(ResultIterator<T> delegate, Connection connection)`

- ## Method Summary

  Modifier and Type
  Method
  Description
  `List<T>`
  `allRows()`
  Returns all yet unread rows from ResultSet without closing it.
  `void`
  `close()`
  Closes ResultIterator and associated ResultSet.
  `protected void`
  `doClose()`
  `boolean`
  `hasNextRow()`
  Returns true if there is at least one more record that can be read from the iterator.
  `Iterator<T>`
  `iterator()`
  `T`
  `nextRow()`
  Returns the next result row that is, depending on the query, may be a scalar value, a DataRow, or an Object[] array containing a mix of scalars and DataRows.
  `void`
  `skipRow()`
  Goes past current row.

  ### Methods inherited from class java.lang.Object

  `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

  ### Methods inherited from interface java.lang.Iterable

  `forEach, spliterator`

- ## Field Details

  - ### rowCounter

    protected int rowCounter

- ## Constructor Details

  - ### ConnectionAwareResultIterator

    public ConnectionAwareResultIterator(ResultIterator<T> delegate, Connection connection)

- ## Method Details

  - ### close

    public void close()
    Description copied from interface: `ResultIterator`
    Closes ResultIterator and associated ResultSet. This method must be called explicitly when the user is finished processing the records. Otherwise unused database resources will not be released properly.
    Specified by:
      `close` in interface `AutoCloseable`
    Specified by:
      `close` in interface `ResultIterator<T>`

  - ### doClose

    protected void doClose()

  - ### allRows

    public List<T> allRows()
    Description copied from interface: `ResultIterator`
    Returns all yet unread rows from ResultSet without closing it.
    Specified by:
      `allRows` in interface `ResultIterator<T>`

  - ### hasNextRow

    public boolean hasNextRow()
    Description copied from interface: `ResultIterator`
    Returns true if there is at least one more record that can be read from the iterator.
    Specified by:
      `hasNextRow` in interface `ResultIterator<T>`

  - ### nextRow

    public T nextRow()
    Description copied from interface: `ResultIterator`
    Returns the next result row that is, depending on the query, may be a scalar value, a DataRow, or an Object[] array containing a mix of scalars and DataRows.
    Specified by:
      `nextRow` in interface `ResultIterator<T>`

  - ### iterator

    public Iterator<T> iterator()
    Specified by:
      `iterator` in interface `Iterable<T>`

  - ### skipRow

    public void skipRow()
    Description copied from interface: `ResultIterator`
    Goes past current row. If the row is not needed, this may save some time on data conversion.
    Specified by:
      `skipRow` in interface `ResultIterator<T>`