Package net.sf.saxon.expr.accum

## Class PathMappedAccumulatorData

- java.lang.Object
- - net.sf.saxon.expr.accum.PathMappedAccumulatorData

- All Implemented Interfaces:
    `IAccumulatorData`

      public class PathMappedAccumulatorData
      extends java.lang.Object
      implements IAccumulatorData

  Accumulator data for a tree that is obtained by mapping the nodes in this tree to nodes in some other tree (specifically, the subtree from which this tree was originally copied with copy-accumulators=yes) and getting the accumulator value from the corresponding node in the other tree.

- - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method | Description
    --- | --- | ---
    `Accumulator` | `getAccumulator()` | Get the associated accumulator
    `Sequence` | `getValue​(NodeInfo node, boolean postDescent)` | Get the value of the accumulator for a given node

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

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

- - ### Method Detail

    - #### getAccumulator

          public Accumulator getAccumulator()

      Description copied from interface: `IAccumulatorData`
      Get the associated accumulator
      Specified by:
        `getAccumulator` in interface `IAccumulatorData`
      Returns:
        the accumulator

    - #### getValue

          public Sequence getValue​(NodeInfo node,
                                   boolean postDescent)
                            throws XPathException

      Description copied from interface: `IAccumulatorData`
      Get the value of the accumulator for a given node
      Specified by:
        `getValue` in interface `IAccumulatorData`
      Parameters:
        `node` - the node in question
        `postDescent` - false if the pre-descent value of the accumulator is required; false if the post-descent value is wanted.
      Returns:
        the value of the accumulator for this node
      Throws:
        `XPathException`