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## net.sf.saxon.expr
Class PathMap.PathMapNode

    java.lang.Object
      net.sf.saxon.expr.PathMap.PathMapNode

Direct Known Subclasses:
  PathMap.PathMapRoot

Enclosing class:
  PathMap

    public static class PathMap.PathMapNode

extends Object

A node in the path map. A node holds a set of arcs, each representing a link to another node in the path map.

Method Summary
`boolean` | `allPathsAreWithinStreamableSnapshot()` Determine whether the path is entirely within a streamable snapshot of a streamed document: that is, it must only navigate to ancestors and to attributes of ancestors
`PathMap.PathMapNode` | `createArc(AxisExpression step)` Create a new arc
`void` | `createArc(AxisExpression step, PathMap.PathMapNode target)` Create a new arc to an existing target
`PathMap.PathMapArc[]` | `getArcs()` Get the arcs emanating from this node in the PathMap
`boolean` | `hasReachableReturnables()` Test whether there are any returnable nodes reachable from this node by zero or more arcs
`boolean` | `hasUnknownDependencies()` Ask whether the path has unknown dependencies, typically because a node reached by the path is supplied as an argument to a user-defined function
`boolean` | `isAtomized()` Ask whether the typed value (or string value) of the node reached by this path will be required.
`boolean` | `isReturnable()` Ask whether the node represents a value that is returnable as the result of the supplied expression, rather than merely a node that is visited en route
`void` | `setAtomized()` Indicate that the typed value or string value of the node reached by this path will be used.
`void` | `setHasUnknownDependencies()` Indicate that the path has unknown dependencies, typically because a node reached by the path is supplied as an argument to a user-defined function
`void` | `setReturnable(boolean returnable)` Indicate that the node represents a value that is returnable as the result of the supplied expression, rather than merely a node that is visited en route

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

Method Detail

### createArc

    public PathMap.PathMapNode createArc(AxisExpression step)

  Create a new arc

  Parameters:
    `step` - the AxisExpression representing this step
  Returns:
    the newly-constructed target of the new arc

### createArc

    public void createArc(AxisExpression step,
                          PathMap.PathMapNode target)

  Create a new arc to an existing target

  Parameters:
    `step` - the AxisExpression representing this step
    `target` - the target node of the new arc

### getArcs

    public PathMap.PathMapArc[] getArcs()

  Get the arcs emanating from this node in the PathMap

  Returns:
    the arcs, each representing an AxisStep. The order of arcs in the array is undefined.

### setReturnable

    public void setReturnable(boolean returnable)

  Indicate that the node represents a value that is returnable as the result of the supplied expression, rather than merely a node that is visited en route

  Parameters:
    `returnable` - true if the node represents a final result of the expression

### isReturnable

    public boolean isReturnable()

  Ask whether the node represents a value that is returnable as the result of the supplied expression, rather than merely a node that is visited en route

  Returns:
    true if the node represents a final result of the expression

### hasReachableReturnables

    public boolean hasReachableReturnables()

  Test whether there are any returnable nodes reachable from this node by zero or more arcs

### setAtomized

    public void setAtomized()

  Indicate that the typed value or string value of the node reached by this path will be used. Note that because this is being used only to determine navigation paths, the property does not need to be set when nodes other than element or document nodes are atomized.

### isAtomized

    public boolean isAtomized()

  Ask whether the typed value (or string value) of the node reached by this path will be required.

  Returns:
    true if the typed value or string value of the node is required

### setHasUnknownDependencies

    public void setHasUnknownDependencies()

  Indicate that the path has unknown dependencies, typically because a node reached by the path is supplied as an argument to a user-defined function

### hasUnknownDependencies

    public boolean hasUnknownDependencies()

  Ask whether the path has unknown dependencies, typically because a node reached by the path is supplied as an argument to a user-defined function

  Returns:
    true if the path has unknown dependencies

### allPathsAreWithinStreamableSnapshot

    public boolean allPathsAreWithinStreamableSnapshot()

  Determine whether the path is entirely within a streamable snapshot of a streamed document: that is, it must only navigate to ancestors and to attributes of ancestors

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Copyright (c) 2004-2010 Saxonica Limited. All rights reserved.