Revision 17088 trunk/extensions/extRemoteSensing/src/org/gvsig/remotesensing/decisiontrees/DecisionTreeNode.java
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/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana |
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* |
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* Copyright (C) 2006 Instituto de Desarrollo Regional and Generalitat Valenciana. |
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* |
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License |
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* as published by the Free Software Foundation; either version 2 |
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* of the License, or (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA. |
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* |
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* For more information, contact: |
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* |
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* Generalitat Valenciana |
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* Conselleria d'Infraestructures i Transport |
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* Av. Blasco Iba?ez, 50 |
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* 46010 VALENCIA |
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* SPAIN |
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* |
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* +34 963862235 |
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* gvsig@gva.es |
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* www.gvsig.gva.es |
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* |
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* or |
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* |
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* Instituto de Desarrollo Regional (Universidad de Castilla La-Mancha) |
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* Campus Universitario s/n |
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* 02071 Alabacete |
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* Spain |
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* |
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* +34 967 599 200 |
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*/ |
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package org.gvsig.remotesensing.decisiontrees; |
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import org.nfunk.jep.JEP; |
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/** |
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* Clase que representa un n?do en un ?rbol de decisi?n |
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* |
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* @author Diego Guerrero Sevilla (diego.guerrero@uclm.es) |
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* |
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*/ |
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public class DecisionTreeNode {
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public String toString() {
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if(expression!=null) |
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return expression; |
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else |
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return String.valueOf(classID); |
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} |
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private JEP parser = null; |
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private DecisionTreeNode rightChild = null; |
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private int classID = -1; |
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public DecisionTreeNode(String expresion) {
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this.expression = expresion; |
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parser = new JEP(); |
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} |
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public DecisionTreeNode(int classID) {
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this.classID = classID; |
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} |
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public DecisionTreeNode() {
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parser = new JEP(); |
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parser.setAllowUndeclared(true); |
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parser.addStandardFunctions(); |
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} |
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private DecisionTreeNode(JEP parser) {
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this.parser = parser; |
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} |
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public void setChildrens(DecisionTreeNode leftChild, DecisionTreeNode rightChild){
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this.leftChild = leftChild; |
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this.rightChild = leftChild; |
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} |
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public boolean evaluate(){
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return(parser.getValue()==0.0); |
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parser.parseExpression(expression); |
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return(parser.getValue()!=0.0); |
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} |
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public int execute (){
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if (expression!=null) |
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if (evaluate()){
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if (leftChild!=null)
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return leftChild.execute();
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if (rightChild!=null)
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return rightChild.execute();
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} |
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else if (rightChild!=null) |
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return rightChild.execute();
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return leftChild.execute();
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return classID; |
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} |
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public int validate(){
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parser.parseExpression(expression); |
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return 0; |
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} |
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public void setExpression(String expression) {
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this.expression = expression; |
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parser.parseExpression(expression); |
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classID = -1; |
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} |
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public int getClassID() {
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public void setClassID(int classID) {
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this.classID = classID; |
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} |
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public void addChildren() {
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leftChild = new DecisionTreeNode(parser); |
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rightChild = new DecisionTreeNode(parser); |
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setExpression("");
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} |
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public DecisionTreeNode getLeftChild() {
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return leftChild; |
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} |
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public DecisionTreeNode getRightChild() {
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return rightChild; |
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} |
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public void setVarValue (String varName, Object value){
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parser.setVarValue(varName, value); |
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} |
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/** |
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* |
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* @return N?mero de nodos del ?rbol que radica en este nodo. |
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*/ |
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public int size(){
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int leftSize = 0; |
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int rightSize = 0; |
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if (leftChild != null) |
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leftSize = leftChild.size(); |
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if (rightChild != null) |
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rightSize = rightChild.size(); |
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return 1+leftSize+rightSize; |
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} |
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} |
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