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## org.apache.xalan.xpath
Class MutableNodeListImpl

    java.lang.Object
      |
      +--org.apache.xalan.xpath.xml.NodeVector
            |
            +--org.apache.xalan.xpath.MutableNodeListImpl

public class MutableNodeListImpl
extends NodeVector
implements MutableNodeList

**For advanced use only** Implementation of MutableNodeList.

See Also:
  Serialized Form

Constructor Summary
`MutableNodeListImpl()` **For advanced use only** Create an empty nodelist.
`MutableNodeListImpl(int blocksize)` **For advanced use only** Create an empty nodelist.
`MutableNodeListImpl(org.w3c.dom.Node node)` **For advanced use only** Create a MutableNodeListImpl, and copy the members of the given nodelist into it.
`MutableNodeListImpl(org.w3c.dom.NodeList nodelist)` **For advanced use only** Create a MutableNodeListImpl, and copy the members of the given nodelist into it.

Method Summary
`void` | `addNode(org.w3c.dom.Node n)` **For advanced use only** Add a node.
`int` | `addNodeInDocOrder(org.w3c.dom.Node node, boolean test, XPathSupport support)` **For advanced use only** Add the node into a vector of nodes where it should occur in document order.
`int` | `addNodeInDocOrder(org.w3c.dom.Node node, XPathSupport support)` **For advanced use only** Add the node into a vector of nodes where it should occur in document order.
`void` | `addNodes(org.w3c.dom.NodeList nodelist)` **For advanced use only** Copy NodeList members into this nodelist, adding in document order.
`void` | `addNodesInDocOrder(org.w3c.dom.NodeList nodelist, XPathSupport support)` **For advanced use only** Copy NodeList members into this nodelist, adding in document order.
`boolean` | `checkDups()` **For advanced use only**
`boolean` | `checkDups(org.w3c.dom.Node node)` **For advanced use only** Check for duplicates, for diagnostics.
`int` | `getLength()` **For advanced use only** The number of nodes in the list.
`void` | `insertNode(org.w3c.dom.Node n, int pos)` **For advanced use only** Insert a node at a given position.
`static boolean` | `isNodeAfter(org.w3c.dom.Node node1, org.w3c.dom.Node node2, XPathSupport support)` **For advanced use only** Figure out if node2 should be placed after node1 when placing nodes in a list that is to be sorted in document order.
`org.w3c.dom.Node` | `item(int index)` **For advanced use only** Returns the `index`th item in the collection.
`void` | `removeNode(org.w3c.dom.Node n)` **For advanced use only** Remove a node.
`void` | `setItemNull(int pos)` **For advanced use only** Set a item to null, so the list doesn't have to keep being compressed.

Methods inherited from class org.apache.xalan.xpath.xml.NodeVector
`addElement, appendNodes, contains, elementAt, indexOf, indexOf, insertElementAt, removeAllElements, removeElement, removeElementAt, setElementAt, size`

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

Constructor Detail

### MutableNodeListImpl

    public MutableNodeListImpl()

  **For advanced use only** Create an empty nodelist.

### MutableNodeListImpl

    public MutableNodeListImpl(int blocksize)

  **For advanced use only** Create an empty nodelist.

### MutableNodeListImpl

    public MutableNodeListImpl(org.w3c.dom.NodeList nodelist)

  **For advanced use only** Create a MutableNodeListImpl, and copy the members of the given nodelist into it.

### MutableNodeListImpl

    public MutableNodeListImpl(org.w3c.dom.Node node)

  **For advanced use only** Create a MutableNodeListImpl, and copy the members of the given nodelist into it.

Method Detail

### item

    public org.w3c.dom.Node item(int index)

  **For advanced use only** Returns the `index`th item in the collection. If `index` is greater than or equal to the number of nodes in the list, this returns `null`.
  Parameters:
    `index` - Index into the collection.
  Returns:
    The node at the `index`th position in the `NodeList`, or `null` if that is not a valid index.

### getLength

    public int getLength()

  **For advanced use only** The number of nodes in the list. The range of valid child node indices is 0 to `length-1` inclusive.

### checkDups

    public boolean checkDups(org.w3c.dom.Node node)

  **For advanced use only** Check for duplicates, for diagnostics.

### checkDups

    public boolean checkDups()

### addNode

    public void addNode(org.w3c.dom.Node n)

  **For advanced use only** Add a node.
  Specified by:
    addNode in interface MutableNodeList

### insertNode

    public void insertNode(org.w3c.dom.Node n,
                           int pos)

  **For advanced use only** Insert a node at a given position.
  Specified by:
    insertNode in interface MutableNodeList

### removeNode

    public void removeNode(org.w3c.dom.Node n)

  **For advanced use only** Remove a node.
  Specified by:
    removeNode in interface MutableNodeList

### setItemNull

    public void setItemNull(int pos)

  **For advanced use only** Set a item to null, so the list doesn't have to keep being compressed.
  Specified by:
    setItemNull in interface MutableNodeList

### addNodes

    public void addNodes(org.w3c.dom.NodeList nodelist)

  **For advanced use only** Copy NodeList members into this nodelist, adding in document order. If a node is null, don't add it.
  Specified by:
    addNodes in interface MutableNodeList

### addNodesInDocOrder

    public void addNodesInDocOrder(org.w3c.dom.NodeList nodelist,
                                   XPathSupport support)

  **For advanced use only** Copy NodeList members into this nodelist, adding in document order. If a node is null, don't add it.
  Specified by:
    addNodesInDocOrder in interface MutableNodeList

### addNodeInDocOrder

    public int addNodeInDocOrder(org.w3c.dom.Node node,
                                 boolean test,
                                 XPathSupport support)

  **For advanced use only** Add the node into a vector of nodes where it should occur in document order.
  Specified by:
    addNodeInDocOrder in interface MutableNodeList
  Parameters:
    `v` - Vector of nodes, presumably containing Nodes
    `obj` - Node object.
    `test` - true if we should test for doc order
  Returns:
    insertIndex.

### addNodeInDocOrder

    public int addNodeInDocOrder(org.w3c.dom.Node node,
                                 XPathSupport support)

  **For advanced use only** Add the node into a vector of nodes where it should occur in document order.
  Specified by:
    addNodeInDocOrder in interface MutableNodeList
  Parameters:
    `v` - Vector of nodes, presumably containing Nodes
    `obj` - Node object.

### isNodeAfter

    public static boolean isNodeAfter(org.w3c.dom.Node node1,
                                      org.w3c.dom.Node node2,
                                      XPathSupport support)

  **For advanced use only** Figure out if node2 should be placed after node1 when placing nodes in a list that is to be sorted in document order. Assumes that node1 and node2 are not equal. NOTE: Make sure this does the right thing with attribute nodes!!!
  Returns:
    true if node2 should be placed after node1, and false if node2 should be placed before node1.

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