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## com.sas.storage.olap.embedded
Class Tuple

    com.sas.storage.olap.embedded.Tuple

All Implemented Interfaces:
  TupleInterface

    public class Tuple

implements TupleInterface

Used for building the Tuples of an in memory multidimensional ResultSet This implementation is designed for the simple definition of a tuple in a multidimensional ResultSet. The tuples are stored in memory within the model.

The tuple concept is a core element of the result set metadata. It combines members from each dimension that is projected onto the axis. Each axis contains a set of tuples with each one representing a single point on the axis. The tuple Index uniquely identifies the position of the tuple on the axis.

{(2000, Chairs)} is an example of a tuple where the Time and Products dimensions are projected onto the axis. While this example displays a set of two labels, "2000" and "Chairs", each element of a tuple may contain more information than just the displayable text. This information is found in the tuple elements which are returned from the getTupleElements() method.

See Also:
  `TupleInterface`, `AxisInterface`, `ResultSetMetadata`

Constructor Summary
`Tuple()` Default tuple with no elements
`Tuple(TupleElementInterface[] tupleElements)` Create a tuple with the elements

Method Summary
`void` | `addElement(int index, TupleElementInterface element)` Add a tupleElement at the specfied index.
`void` | `addElement(TupleElementInterface element)` Append a tupleElement.
`AxisInterface` | `getAxis()` Returns the axis for the tuple.
`TupleElementInterface` | `getElement(int index)` Returns TupleElement for this tuple
`TupleElementInterface[]` | `getElements(int index, int count)` Returns TupleElements for this tuple
`int` | `getTupleDepth()` Return the number of elements in this tuple.
`int` | `getTupleIndex()` Returns the tuple ordinal if set.
`TupleElementInterface` | `removeElement(int index)` Remove a tuple element from this tuple.
`void` | `setAxis(AxisInterface axis)` Set the axis for this tuple.
`void` | `setElements(int index, int endIndex, TupleElementInterface[] tupleElements)` Sets TupleElements for this tuple

Constructor Detail

### Tuple

    public Tuple()
          throws OLAPException

  Default tuple with no elements

  Throws:
    `OLAPException`

### Tuple

    public Tuple(TupleElementInterface[] tupleElements)
          throws OLAPException

  Create a tuple with the elements

  Parameters:
    `tupleElements` - the elements that makes this tuple. The outer most element on the row/column has index zero and the inner most element has index element count -1.
  Throws:
    `OLAPException` - if the tuple cannot be created

Method Detail

### getTupleIndex

    public int getTupleIndex()
                      throws OLAPException

  Returns the tuple ordinal if set. The default index is the index of this tuple added on to an axis.

  Specified by:
    `getTupleIndex` in interface `TupleInterface`
  Returns:
    The tuple ordinal of this tuple if set, -1 otherwise
  Throws:
    `OLAPException` - if cannot get the coordinate

### getElement

    public TupleElementInterface getElement(int index)
                                     throws OLAPException

  Returns TupleElement for this tuple

  Specified by:
    `getElement` in interface `TupleInterface`
  Parameters:
    `index` - index of the element in this tuple. index should in the range of zero to current element count.
  Returns:
    A tuple element for this tuple.
  Throws:
    `OLAPException` - if the elements cannot be retrieved

### getElements

    public TupleElementInterface[] getElements(int index,
                                               int count)
                                        throws OLAPException

  Returns TupleElements for this tuple

  Specified by:
    `getElements` in interface `TupleInterface`
  Parameters:
    `index` - index of the element in this tuple. index should in the range of zero to current element count.
    `count` - number of elements to be returned.
  Returns:
    An array of tuple elements for this tuple. The length of this array should be equal to the tuple depth for the axis associated with this tuple. The labels are ordered from least to most specific. For example, [North America, USA, North Carolina, Cary]. where North America being the outermost label and Cary being the inner most label.
  Throws:
    `OLAPException` - if the elements cannot be retrieved

### addElement

    public void addElement(TupleElementInterface element)
                    throws OLAPException

  Append a tupleElement.

  Parameters:
    `tupleElement` - to insert
  Throws:
    `OLAPException` - if the tuple element cannot be added

### addElement

    public void addElement(int index,
                           TupleElementInterface element)
                    throws OLAPException

  Add a tupleElement at the specfied index.

  Parameters:
    `index` - to insert the tupleElement
    `tupleElement` - to insert
  Throws:
    `OLAPException` - if the tuple element cannot be added

### setElements

    public void setElements(int index,
                            int endIndex,
                            TupleElementInterface[] tupleElements)
                     throws OLAPException

  Sets TupleElements for this tuple

  Parameters:
    `index` - beginning index for setting the elements
    `endIndex` - exclusive ending index
    `tupleElements` - An array of tuple labels for this tuple. The length of this array should be equal to the tuple depth for the axis associated with this tuple. The labels are ordered from least to most specific. For example, [North America, USA, North Carolina, Cary].
  Throws:
    `OLAPException`

### removeElement

    public TupleElementInterface removeElement(int index)
                                        throws OLAPException

  Remove a tuple element from this tuple.

  Parameters:
    `index` - element index in the tuple. index should be greater than zero and less than current element count.
  Returns:
    the element that was removed, null otherwise.
  Throws:
    `OLAPException` - if the element cannot be removed

### getAxis

    public AxisInterface getAxis()
                          throws OLAPException

  Returns the axis for the tuple.

  Specified by:
    `getAxis` in interface `TupleInterface`
  Returns:
    Axis that is set for this tuple, null if not set.
  Throws:
    `OLAPException` - if the axis cannot be returned

### setAxis

    public void setAxis(AxisInterface axis)
                 throws OLAPException

  Set the axis for this tuple. This method will simply set the axis property for this tuple and will not add this tuple to the specified axis. Use axis.addTuple() method to add it to the axis.

  Parameters:
    `axis` - for the tuple
  Throws:
    `OLAPException` - if the axis cannot be set

### getTupleDepth

    public int getTupleDepth()
                      throws OLAPException

  Return the number of elements in this tuple.

  Specified by:
    `getTupleDepth` in interface `TupleInterface`
  Returns:
    tuple element count
  Throws:
    `OLAPException` - if cannot get the tupledepth

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