Package weka.core

Class Trie.TrieNode

  • All Implemented Interfaces:
    java.io.Serializable, java.lang.Cloneable, javax.swing.tree.MutableTreeNode, javax.swing.tree.TreeNode, RevisionHandler
    Enclosing class:
    Trie
    public static class Trie.TrieNode
extends javax.swing.tree.DefaultMutableTreeNode
implements RevisionHandler
    Represents a node in the trie.
    Version:
    $Revision: 1.2 $
    Author:
    fracpete (fracpete at waikato dot ac dot nz)
    See Also:
    Serialized Form

    • Field Summary

      Fields 
      Modifier and Type Field Description
      static java.lang.Character STOP
      the stop character

      • Fields inherited from class javax.swing.tree.DefaultMutableTreeNode

        EMPTY_ENUMERATION

    • Constructor Summary

      Constructors 
      Constructor Description
      TrieNode​(char c)
      initializes the node
      TrieNode​(java.lang.Character c)
      initializes the node

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      boolean add​(java.lang.String suffix)
      adds the given string to its children (creates children if necessary)
      java.lang.Object clone()
      creates a deep copy of itself
      boolean contains​(java.lang.String suffix)
      checks whether a suffix can be found in its children
      boolean equals​(java.lang.Object obj)
      Indicates whether some other object is "equal to" this one.
      Trie.TrieNode find​(java.lang.String suffix)
      returns the node with the given suffix
      java.lang.Character getChar()
      returns the stored character
      java.lang.String getCommonPrefix()
      returns the common prefix for all the nodes starting with this node.
      java.lang.String getCommonPrefix​(java.lang.String startPrefix)
      returns the common prefix for all the nodes starting with the node for the specified prefix.
      java.lang.String getRevision()
      Returns the revision string.
      java.lang.String getString()
      returns the full string up to the root
      boolean remove​(java.lang.String suffix)
      Removes a suffix from the trie.
      void setChar​(java.lang.Character value)
      sets the character this node represents
      int size()
      returns the number of stored strings, i.e., leaves
      java.lang.String toString()
      returns the node in a string representation

      • Methods inherited from class javax.swing.tree.DefaultMutableTreeNode

        add, breadthFirstEnumeration, children, depthFirstEnumeration, getAllowsChildren, getChildAfter, getChildAt, getChildBefore, getChildCount, getDepth, getFirstChild, getFirstLeaf, getIndex, getLastChild, getLastLeaf, getLeafCount, getLevel, getNextLeaf, getNextNode, getNextSibling, getParent, getPath, getPreviousLeaf, getPreviousNode, getPreviousSibling, getRoot, getSharedAncestor, getSiblingCount, getUserObject, getUserObjectPath, insert, isLeaf, isNodeAncestor, isNodeChild, isNodeDescendant, isNodeRelated, isNodeSibling, isRoot, pathFromAncestorEnumeration, postorderEnumeration, preorderEnumeration, remove, remove, removeAllChildren, removeFromParent, setAllowsChildren, setParent, setUserObject

      • Methods inherited from class java.lang.Object

        getClass, hashCode, notify, notifyAll, wait, wait, wait

    • Field Detail

      • STOP

        public static final java.lang.Character STOP
        the stop character

    • Constructor Detail

      • TrieNode

        public TrieNode​(char c)
        initializes the node
        Parameters:
        c - the value of this node

      • TrieNode

        public TrieNode​(java.lang.Character c)
        initializes the node
        Parameters:
        c - the value of this node

    • Method Detail

      • getChar

        public java.lang.Character getChar()
        returns the stored character
        Returns:
        the stored character

      • setChar

        public void setChar​(java.lang.Character value)
        sets the character this node represents
        Parameters:
        value - the character to store

      • add

        public boolean add​(java.lang.String suffix)
        adds the given string to its children (creates children if necessary)
        Parameters:
        suffix - the suffix to add to its children
        Returns:
        true if the add operation changed the structure

      • remove

        public boolean remove​(java.lang.String suffix)
        Removes a suffix from the trie.
        Parameters:
        suffix - the suffix to remove
        Returns:
        true if this trie changed as a result of the call

      • contains

        public boolean contains​(java.lang.String suffix)
        checks whether a suffix can be found in its children
        Parameters:
        suffix - the suffix to look for
        Returns:
        true if suffix was found

      • clone

        public java.lang.Object clone()
        creates a deep copy of itself
        Overrides:
        clone in class javax.swing.tree.DefaultMutableTreeNode
        Returns:
        a deep copy of itself

      • equals

        public boolean equals​(java.lang.Object obj)
        Indicates whether some other object is "equal to" this one.
        Overrides:
        equals in class java.lang.Object
        Parameters:
        obj - the object to check for equality
        Returns:
        true if equal

      • find

        public Trie.TrieNode find​(java.lang.String suffix)
        returns the node with the given suffix
        Parameters:
        suffix - the suffix to look for
        Returns:
        null if unsuccessful otherwise the corresponding node

      • getCommonPrefix

        public java.lang.String getCommonPrefix()
        returns the common prefix for all the nodes starting with this node. The result includes this node, unless it's the root node or a STOP node.
        Returns:
        the result of the search

      • getCommonPrefix

        public java.lang.String getCommonPrefix​(java.lang.String startPrefix)
        returns the common prefix for all the nodes starting with the node for the specified prefix. Can be null if initial prefix is not found. The result includes this node, unless it's the root node or a STOP node. Using the empty string means starting with this node.
        Parameters:
        startPrefix - the prefix of the node to start the search from
        Returns:
        the result of the search, null if startPrefix cannot be found

      • size

        public int size()
        returns the number of stored strings, i.e., leaves
        Returns:
        the number of stored strings

      • getString

        public java.lang.String getString()
        returns the full string up to the root
        Returns:
        the full string to the root

      • toString

        public java.lang.String toString()
        returns the node in a string representation
        Overrides:
        toString in class javax.swing.tree.DefaultMutableTreeNode
        Returns:
        the node as string

      • getRevision

        public java.lang.String getRevision()
        Returns the revision string.
        Specified by:
        getRevision in interface RevisionHandler
        Returns:
        the revision