org.apache.xml.utils

## Class NodeVector

- java.lang.Object
- - org.apache.xml.utils.NodeVector

All Implemented Interfaces:
  java.io.Serializable, java.lang.Cloneable

Direct Known Subclasses:
  NodeSetDTM

    public class NodeVector
    extends java.lang.Object
    implements java.io.Serializable, java.lang.Cloneable

A very simple table that stores a list of Nodes.

See Also:
  Serialized Form
Usage:
  **For internal use only**

### Constructor Summary

Constructors
Constructor and Description
`NodeVector()` Default constructor.
`NodeVector(int blocksize)` Construct a NodeVector, using the given block size.

### Method Summary

Methods
`void` `addElement(int value)` Append a Node onto the vector.
`void` `appendNodes(NodeVector nodes)` Append the nodes to the list.
`java.lang.Object` `clone()` Get a cloned LocPathIterator.
`boolean` `contains(int s)` Tell if the table contains the given node.
`int` `elementAt(int i)` Get the nth element.
`int` `indexOf(int elem)` Searches for the first occurence of the given argument, beginning the search at index, and testing for equality using the equals method.
`int` `indexOf(int elem, int index)` Searches for the first occurence of the given argument, beginning the search at index, and testing for equality using the equals method.
`void` `insertElementAt(int value, int at)` Inserts the specified node in this vector at the specified index.
`void` `insertInOrder(int value)` Insert a node in order in the list.
`int` `peepOrNull()` Return the node at the top of the stack without popping the stack.
`int` `peepTail()` Return the node at the tail of the vector without popping Special purpose method for TransformerImpl, pushElemTemplateElement.
`int` `peepTailSub1()` Return the node one position from the tail without popping.
`int` `pop()` Pop a node from the tail of the vector and return the result.
`int` `popAndTop()` Pop a node from the tail of the vector and return the top of the stack after the pop.
`void` `popPair()` Pop a pair of nodes from the tail of the stack.
`void` `popQuick()` Pop a node from the tail of the vector.
`void` `push(int value)` Append a Node onto the vector.
`void` `pushPair(int v1, int v2)` Push a pair of nodes into the stack.
`void` `removeAllElements()` Inserts the specified node in this vector at the specified index.
`void` `RemoveAllNoClear()` Set the length to zero, but don't clear the array.
`boolean` `removeElement(int s)` Removes the first occurrence of the argument from this vector.
`void` `removeElementAt(int i)` Deletes the component at the specified index.
`void` `setElementAt(int node, int index)` Sets the component at the specified index of this vector to be the specified object.
`void` `setTail(int n)` Set the tail of the stack to the given node.
`void` `setTailSub1(int n)` Set the given node one position from the tail.
`int` `size()` Get the length of the list.
`void` `sort()` Sort an array using a quicksort algorithm.
`void` `sort(int[] a, int lo0, int hi0)` Sort an array using a quicksort algorithm.

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

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

### Constructor Detail

#### NodeVector

    public NodeVector()

Default constructor.

#### NodeVector

    public NodeVector(int blocksize)

Construct a NodeVector, using the given block size.

Parameters:
  `blocksize` - Size of blocks to allocate

### Method Detail

#### clone

    public java.lang.Object clone()
                           throws java.lang.CloneNotSupportedException

Get a cloned LocPathIterator.

Overrides:
  `clone` in class `java.lang.Object`
Returns:
  A clone of this
Throws:
  `java.lang.CloneNotSupportedException`

#### size

    public int size()

Get the length of the list.

Returns:
  Number of nodes in this NodeVector

#### addElement

    public void addElement(int value)

Append a Node onto the vector.

Parameters:
  `value` - Node to add to the vector

#### push

    public final void push(int value)

Append a Node onto the vector.

Parameters:
  `value` - Node to add to the vector

#### pop

    public final int pop()

Pop a node from the tail of the vector and return the result.

Returns:
  the node at the tail of the vector

#### popAndTop

    public final int popAndTop()

Pop a node from the tail of the vector and return the top of the stack after the pop.

Returns:
  The top of the stack after it's been popped

#### popQuick

    public final void popQuick()

Pop a node from the tail of the vector.

#### peepOrNull

    public final int peepOrNull()

Return the node at the top of the stack without popping the stack. Special purpose method for TransformerImpl, pushElemTemplateElement. Performance critical.

Returns:
  Node at the top of the stack or null if stack is empty.

#### pushPair

    public final void pushPair(int v1,
                int v2)

Push a pair of nodes into the stack. Special purpose method for TransformerImpl, pushElemTemplateElement. Performance critical.

Parameters:
  `v1` - First node to add to vector
  `v2` - Second node to add to vector

#### popPair

    public final void popPair()

Pop a pair of nodes from the tail of the stack. Special purpose method for TransformerImpl, pushElemTemplateElement. Performance critical.

#### setTail

    public final void setTail(int n)

Set the tail of the stack to the given node. Special purpose method for TransformerImpl, pushElemTemplateElement. Performance critical.

Parameters:
  `n` - Node to set at the tail of vector

#### setTailSub1

    public final void setTailSub1(int n)

Set the given node one position from the tail. Special purpose method for TransformerImpl, pushElemTemplateElement. Performance critical.

Parameters:
  `n` - Node to set

#### peepTail

    public final int peepTail()

Return the node at the tail of the vector without popping Special purpose method for TransformerImpl, pushElemTemplateElement. Performance critical.

Returns:
  Node at the tail of the vector

#### peepTailSub1

    public final int peepTailSub1()

Return the node one position from the tail without popping. Special purpose method for TransformerImpl, pushElemTemplateElement. Performance critical.

Returns:
  Node one away from the tail

#### insertInOrder

    public void insertInOrder(int value)

Insert a node in order in the list.

Parameters:
  `value` - Node to insert

#### insertElementAt

    public void insertElementAt(int value,
                       int at)

Inserts the specified node in this vector at the specified index. Each component in this vector with an index greater or equal to the specified index is shifted upward to have an index one greater than the value it had previously.

Parameters:
  `value` - Node to insert
  `at` - Position where to insert

#### appendNodes

    public void appendNodes(NodeVector nodes)

Append the nodes to the list.

Parameters:
  `nodes` - NodeVector to append to this list

#### removeAllElements

    public void removeAllElements()

Inserts the specified node in this vector at the specified index. Each component in this vector with an index greater or equal to the specified index is shifted upward to have an index one greater than the value it had previously.

#### RemoveAllNoClear

    public void RemoveAllNoClear()

Set the length to zero, but don't clear the array.

#### removeElement

    public boolean removeElement(int s)

Removes the first occurrence of the argument from this vector. If the object is found in this vector, each component in the vector with an index greater or equal to the object's index is shifted downward to have an index one smaller than the value it had previously.

Parameters:
  `s` - Node to remove from the list
Returns:
  True if the node was successfully removed

#### removeElementAt

    public void removeElementAt(int i)

Deletes the component at the specified index. Each component in this vector with an index greater or equal to the specified index is shifted downward to have an index one smaller than the value it had previously.

Parameters:
  `i` - Index of node to remove

#### setElementAt

    public void setElementAt(int node,
                    int index)

Sets the component at the specified index of this vector to be the specified object. The previous component at that position is discarded. The index must be a value greater than or equal to 0 and less than the current size of the vector.

Parameters:
  `node` - Node to set
  `index` - Index of where to set the node

#### elementAt

    public int elementAt(int i)

Get the nth element.

Parameters:
  `i` - Index of node to get
Returns:
  Node at specified index

#### contains

    public boolean contains(int s)

Tell if the table contains the given node.

Parameters:
  `s` - Node to look for
Returns:
  True if the given node was found.

#### indexOf

    public int indexOf(int elem,
              int index)

Searches for the first occurence of the given argument, beginning the search at index, and testing for equality using the equals method.

Parameters:
  `elem` - Node to look for
  `index` - Index of where to start the search
Returns:
  the index of the first occurrence of the object argument in this vector at position index or later in the vector; returns -1 if the object is not found.

#### indexOf

    public int indexOf(int elem)

Searches for the first occurence of the given argument, beginning the search at index, and testing for equality using the equals method.

Parameters:
  `elem` - Node to look for
Returns:
  the index of the first occurrence of the object argument in this vector at position index or later in the vector; returns -1 if the object is not found.

#### sort

    public void sort(int[] a,
            int lo0,
            int hi0)
              throws java.lang.Exception

Sort an array using a quicksort algorithm.

Parameters:
  `a` - The array to be sorted.
  `lo0` - The low index.
  `hi0` - The high index.
Throws:
  `java.lang.Exception`

#### sort

    public void sort()
              throws java.lang.Exception

Sort an array using a quicksort algorithm.

Throws:
  `java.lang.Exception`