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## org.apache.commons.beanutils
Class ResultSetIterator

    java.lang.Object
      org.apache.commons.beanutils.ResultSetIterator

All Implemented Interfaces:
  Iterator, DynaBean

    public class ResultSetIterator

extends Object
implements DynaBean, Iterator

Implementation of `java.util.Iterator` returned by the `iterator()` method of `ResultSetDynaClass`. Each object returned by this iterator will be a `DynaBean` that represents a single row from the result set being wrapped.

Version:
  $Revision: 556221 $ $Date: 2007-07-14 05:19:21 +0100 (Sat, 14 Jul 2007) $
Author:
  Craig R. McClanahan

Field Summary
`protected boolean` | `current` Flag indicating whether the result set is currently positioned at a row for which we have not yet returned an element in the iteration.
`protected ResultSetDynaClass` | `dynaClass` The `ResultSetDynaClass` we are associated with.
`protected boolean` | `eof` Flag indicating whether the result set has indicated that there are no further rows.

Method Summary
`protected void` | `advance()` Advance the result set to the next row, if there is not a current row (and if we are not already at eof).
`boolean` | `contains(String name, String key)` Does the specified mapped property contain a value for the specified key value?
`Object` | `get(String name)` Return the value of a simple property with the specified name.
`Object` | `get(String name, int index)` Return the value of an indexed property with the specified name.
`Object` | `get(String name, String key)` Return the value of a mapped property with the specified name, or `null` if there is no value for the specified key.
`DynaClass` | `getDynaClass()` Return the `DynaClass` instance that describes the set of properties available for this DynaBean.
`boolean` | `hasNext()` Return `true` if the iteration has more elements.
`Object` | `next()` Return the next element in the iteration.
`void` | `remove()` Remove the current element from the iteration.
`void` | `remove(String name, String key)` Remove any existing value for the specified key on the specified mapped property.
`void` | `set(String name, int index, Object value)` Set the value of an indexed property with the specified name.
`void` | `set(String name, Object value)` Set the value of a simple property with the specified name.
`void` | `set(String name, String key, Object value)` Set the value of a mapped property with the specified name.

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

Field Detail

### current

    protected boolean current

  Flag indicating whether the result set is currently positioned at a row for which we have not yet returned an element in the iteration.

### dynaClass

    protected ResultSetDynaClass dynaClass

  The `ResultSetDynaClass` we are associated with.

### eof

    protected boolean eof

  Flag indicating whether the result set has indicated that there are no further rows.

Method Detail

### contains

    public boolean contains(String name,
                            String key)

  Does the specified mapped property contain a value for the specified key value?

  Specified by:
    `contains` in interface `DynaBean`
  Parameters:
    `name` - Name of the property to check
    `key` - Name of the key to check
  Returns:
    `true`if the mapped property contains a value for the specified key, otherwise `false```
  Throws:
    `IllegalArgumentException` - if there is no property of the specified name

### get

    public Object get(String name)

  Return the value of a simple property with the specified name.

  Specified by:
    `get` in interface `DynaBean`
  Parameters:
    `name` - Name of the property whose value is to be retrieved
  Returns:
    The property's value
  Throws:
    `IllegalArgumentException` - if there is no property of the specified name

### get

    public Object get(String name,
                      int index)

  Return the value of an indexed property with the specified name.

  Specified by:
    `get` in interface `DynaBean`
  Parameters:
    `name` - Name of the property whose value is to be retrieved
    `index` - Index of the value to be retrieved
  Returns:
    The indexed property's value
  Throws:
    `IllegalArgumentException` - if there is no property of the specified name
    `IllegalArgumentException` - if the specified property exists, but is not indexed
    `IndexOutOfBoundsException` - if the specified index is outside the range of the underlying property
    `NullPointerException` - if no array or List has been initialized for this property

### get

    public Object get(String name,
                      String key)

  Return the value of a mapped property with the specified name, or `null` if there is no value for the specified key.

  Specified by:
    `get` in interface `DynaBean`
  Parameters:
    `name` - Name of the property whose value is to be retrieved
    `key` - Key of the value to be retrieved
  Returns:
    The mapped property's value
  Throws:
    `IllegalArgumentException` - if there is no property of the specified name
    `IllegalArgumentException` - if the specified property exists, but is not mapped

### getDynaClass

    public DynaClass getDynaClass()

  Return the `DynaClass` instance that describes the set of properties available for this DynaBean.

  Specified by:
    `getDynaClass` in interface `DynaBean`
  Returns:
    The associated DynaClass

### remove

    public void remove(String name,
                       String key)

  Remove any existing value for the specified key on the specified mapped property.

  Specified by:
    `remove` in interface `DynaBean`
  Parameters:
    `name` - Name of the property for which a value is to be removed
    `key` - Key of the value to be removed
  Throws:
    `IllegalArgumentException` - if there is no property of the specified name

### set

    public void set(String name,
                    Object value)

  Set the value of a simple property with the specified name.

  Specified by:
    `set` in interface `DynaBean`
  Parameters:
    `name` - Name of the property whose value is to be set
    `value` - Value to which this property is to be set
  Throws:
    `ConversionException` - if the specified value cannot be converted to the type required for this property
    `IllegalArgumentException` - if there is no property of the specified name
    `NullPointerException` - if an attempt is made to set a primitive property to null

### set

    public void set(String name,
                    int index,
                    Object value)

  Set the value of an indexed property with the specified name.

  Specified by:
    `set` in interface `DynaBean`
  Parameters:
    `name` - Name of the property whose value is to be set
    `index` - Index of the property to be set
    `value` - Value to which this property is to be set
  Throws:
    `ConversionException` - if the specified value cannot be converted to the type required for this property
    `IllegalArgumentException` - if there is no property of the specified name
    `IllegalArgumentException` - if the specified property exists, but is not indexed
    `IndexOutOfBoundsException` - if the specified index is outside the range of the underlying property

### set

    public void set(String name,
                    String key,
                    Object value)

  Set the value of a mapped property with the specified name.

  Specified by:
    `set` in interface `DynaBean`
  Parameters:
    `name` - Name of the property whose value is to be set
    `key` - Key of the property to be set
    `value` - Value to which this property is to be set
  Throws:
    `ConversionException` - if the specified value cannot be converted to the type required for this property
    `IllegalArgumentException` - if there is no property of the specified name
    `IllegalArgumentException` - if the specified property exists, but is not mapped

### hasNext

    public boolean hasNext()

  Return `true` if the iteration has more elements.

  Specified by:
    `hasNext` in interface `Iterator`
  Returns:
    `true` if the result set has another row, otherwise `false`

### next

    public Object next()

  Return the next element in the iteration.

  Specified by:
    `next` in interface `Iterator`
  Returns:
    advance to the new row and return this

### remove

    public void remove()

  Remove the current element from the iteration. This method is not supported.

  Specified by:
    `remove` in interface `Iterator`

### advance

    protected void advance()
                    throws SQLException

  Advance the result set to the next row, if there is not a current row (and if we are not already at eof).

  Throws:
    `SQLException` - if the result set throws an exception

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