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Java Source Code / Java Documentation » J2EE » Jaffa » org.jaffa.util   Source Cross Reference   Class Diagram   Java Document (Java Doc)   java.lang.Object    org.jaffa.util.Node Node public class Node (Code) An instance of this class can represent a node in a tree. Each node will have a system generated unique identifier. It may have a name (which can be non-unique). It can be linked to a Parent node or be the Root of the tree. It can have child nodes. It will have a value Object. Additionally it can have a map of attributes. Constructor Summary public   Node()      public   Node(String name)      Creates new Node specifying a name. Method Summary public  void addChild(Node node)      Adds a child node. public  Object getAttribute(Object key)      Returns the attribute for the specified key. Parameters:   key - The attribute key. public  Map getAttributes()      Getter for property attributes. public  Node getChildById(String id)      Returns the child by id. Parameters:   id - The node identifier. public  Node getChildByName(String name)      Returns the 1st child which matches the name. Parameters:   name - The node name. public  Collection getChildren()      Returns a collection of child nodes. public  Node getFromFamilyById(String id)      Returns a node from the family by id. Parameters:   id - The node identifier. public  String getId()      Returns the unique identifier of the node. public  String getName()      Getter for property name. public  Node getParent()      Returns the Parent node, or null if this node has no parent. public  Node getRoot()      Returns the root node of the tree to which this node belongs. public  Object getValue()      Getter for property value. public  boolean hasChildren()      Returns true if the node has childen. public  boolean isRoot()      Returns true if the node is its own root. public static  void main(String[] args)      Test rig Parameters:   args - The arguments. public  void makeRoot()      Makes the node its own root. public  boolean parentHasMoreChildren()      Returns true if the parent node has any more child nodes after the current node. public  void printNode(java.io.Writer writer)      A helper routine to print the contents of a node. public  void printNode(java.io.Writer writer, String pad, String padIncrement)      A helper routine to print the contents of a node. public  Object removeAttribute(Object key)      Removes an attribute . Parameters:   key - The attribute key. public  boolean removeChild(Node node)      Removes a child node. public  boolean removeChild(String name)      Removes the 1st child that matches the name Parameters:   name - The node name. public  boolean removeChildren()      Remove all children. public  Object setAttribute(Object key, Object value)      Adds an attribute. public  void setAttributes(Map attributes)      Setter for property attributes. public  void setName(String name)      Setter for property name. public  void setValue(Object value)      Setter for property value. Constructor Detail Node public Node()(Code) Creates new Node Node public Node(String name)(Code) Creates new Node specifying a name. Parameters:   name - The node name. Method Detail addChild public void addChild(Node node)(Code) Adds a child node. Will add a link both ways. Parameters:   node - The child node. getAttribute public Object getAttribute(Object key)(Code) Returns the attribute for the specified key. Parameters:   key - The attribute key. the attribute for the specified key. getAttributes public Map getAttributes()(Code) Getter for property attributes. Value of property attributes. getChildById public Node getChildById(String id)(Code) Returns the child by id. Parameters:   id - The node identifier. the child by id. getChildByName public Node getChildByName(String name)(Code) Returns the 1st child which matches the name. Parameters:   name - The node name. the 1st child which matches the name. getChildren public Collection getChildren()(Code) Returns a collection of child nodes. a collection of child nodes. getFromFamilyById public Node getFromFamilyById(String id)(Code) Returns a node from the family by id. Parameters:   id - The node identifier. a node from the family by id. getId public String getId()(Code) Returns the unique identifier of the node. the unique identifier of the node. getName public String getName()(Code) Getter for property name. Value of property name. getParent public Node getParent()(Code) Returns the Parent node, or null if this node has no parent. the Parent node, or null if this node has no parent. getRoot public Node getRoot()(Code) Returns the root node of the tree to which this node belongs. the root node of the tree to which this node belongs. getValue public Object getValue()(Code) Getter for property value. Value of property value. hasChildren public boolean hasChildren()(Code) Returns true if the node has childen. true if the node has childen. isRoot public boolean isRoot()(Code) Returns true if the node is its own root. true if the node is its own root. main public static void main(String[] args)(Code) Test rig Parameters:   args - The arguments. Not used. makeRoot public void makeRoot()(Code) Makes the node its own root. Will remove links from existing parent node, if any. parentHasMoreChildren public boolean parentHasMoreChildren()(Code) Returns true if the parent node has any more child nodes after the current node. true if the parent node has any more child nodes after the current node. printNode public void printNode(java.io.Writer writer) throws java.io.IOException(Code) A helper routine to print the contents of a node. Parameters:   writer - The writer to which the node contents will be printed. throws:   IOException - if any I/O error occurs. printNode public void printNode(java.io.Writer writer, String pad, String padIncrement) throws java.io.IOException(Code) A helper routine to print the contents of a node. Parameters:   writer - The writer to which the node contents will be printed. Parameters:   pad - The pad string to be used. Parameters:   padIncrement - The increment string to be appended to the pad string at each successive level of child nodes. throws:   IOException - if any I/O error occurs. removeAttribute public Object removeAttribute(Object key)(Code) Removes an attribute . Parameters:   key - The attribute key. the attribute that was removed, or null if there was no such attribute. removeChild public boolean removeChild(Node node)(Code) Removes a child node. Will add a link both ways. Parameters:   node - The child node. true if the child node was removed. removeChild public boolean removeChild(String name)(Code) Removes the 1st child that matches the name Parameters:   name - The node name. true if the child node was removed. removeChildren public boolean removeChildren()(Code) Remove all children. true if any child node was removed. setAttribute public Object setAttribute(Object key, Object value)(Code) Adds an attribute. Will replace an existing attribute having the same key. Parameters:   key - The attribute key. Parameters:   value - The attribute value. previous value associated with specified key, or null if there was no attribute for key. setAttributes public void setAttributes(Map attributes)(Code) Setter for property attributes. Parameters:   attributes - New value of property attributes. setName public void setName(String name)(Code) Setter for property name. Parameters:   name - New value of property name. setValue public void setValue(Object value)(Code) Setter for property value. Parameters:   value - New value of property value. Methods inherited from java.lang.Object native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc) public boolean equals(Object obj)(Code)(Java Doc) protected void finalize() throws Throwable(Code)(Java Doc) final native public Class getClass()(Code)(Java Doc) native public int hashCode()(Code)(Java Doc) final native public void notify()(Code)(Java Doc) final native public void notifyAll()(Code)(Java Doc) public String toString()(Code)(Java Doc) final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc) final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc) final public void wait() throws InterruptedException(Code)(Java Doc)