root / trunk / libraries / libRaster / src / org / gvsig / raster / grid / filter / RasterFilterListManager.java @ 17884
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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 IVER T.I. 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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package org.gvsig.raster.grid.filter; |
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import java.lang.reflect.Constructor; |
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import java.lang.reflect.InvocationTargetException; |
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import java.util.ArrayList; |
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import java.util.Iterator; |
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import java.util.Map.Entry; |
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import java.util.regex.Matcher; |
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import java.util.regex.Pattern; |
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import org.gvsig.raster.util.RasterUtilities; |
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import org.gvsig.raster.util.extensionPoints.ExtensionPoint; |
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import org.gvsig.raster.util.extensionPoints.ExtensionPoints; |
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import org.gvsig.raster.util.extensionPoints.ExtensionPointsSingleton; |
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/*
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* TODO: FUNCIONALIDAD: Anulada las estad?sticas. Hay que incluirlas de nuevo.
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*/
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/**
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* Esta clase es de la parte cliente y es la encargada de la gesti?n de la pila
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* de filtros. Cada tipo de filtro o conjunto de tipos de filtro deben tener un
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* gestor que implementa IRasterFilterManager. Esos gestores deben registrarse
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* en esta clase con la funci?n addClassListManager. Este registro puede hacerse
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* desde esta misma clase o desde una extensi?n. Un cliente que desee aplicar un
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* filtro deber? introducirlo en la lista usando para ello las funciones que su
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* manager de filtros le ofrece. Adem?s se encarga de otras funciones como la
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* conversi?n de un filtro a cadena de Strings y la recuperaci?n desde cadena de
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* Strings y el control de tipos de la salida de un raster de la lista con la
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* entrada del siguiente filtro.
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*
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* @author Nacho Brodin (nachobrodin@gmail.com)
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*/
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public class RasterFilterListManager { |
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protected RasterFilterList rasterFilterList = null; |
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private boolean debug = false; |
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protected ArrayList filterList = null; |
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private ArrayList managers = new ArrayList(); |
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/**
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* Constructor
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* @param filterStack
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*/
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public RasterFilterListManager(RasterFilterList filterStack) {
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this.rasterFilterList = filterStack;
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// Cargamos el manager con los gestores de drivers registrados
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ExtensionPoints extensionPoints = ExtensionPointsSingleton.getInstance(); |
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ExtensionPoint extensionPoint = (ExtensionPoint) extensionPoints.get("RasterFilter");
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if (extensionPoint == null) |
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return;
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Iterator iterator = extensionPoint.entrySet().iterator();
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while (iterator.hasNext()) {
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Entry entry = (Entry) iterator.next(); |
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if (entry != null) { |
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Class RasterClass = (Class) entry.getValue(); |
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Object obj = RasterFilterListManager.loadClass(RasterClass, this); |
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if (obj != null) |
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managers.add(obj); |
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} |
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} |
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} |
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/**
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* Controla que los tipos de los filtros de la pila sean correctos, es decir,
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* que el tipo de salida de un filtro de salida coincida con el tipo de la
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* entrada del siguiente. En caso de no ser as? crea el filtro de tipo
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* adecuado y lo sustituye en el no coincidente. Esto es necesario ya que en
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* la eliminaci?n de filtros puede quedarse en inconsistencia de tipos.
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*/
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public void controlTypes() throws FilterTypeException { |
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ArrayList exceptions = new ArrayList(); |
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for (int i = 0; i < rasterFilterList.lenght(); i++) { |
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String classFilter = null, packageFilter = null, oldClass = null; |
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try {
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RasterFilter rf = rasterFilterList.get(i); |
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if (rf == null) |
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return;
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classFilter = rf.getClass().toString(); |
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packageFilter = classFilter.substring(classFilter.indexOf(" ") + 1, classFilter.lastIndexOf(".")); |
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oldClass = classFilter.substring(classFilter.lastIndexOf(".") + 1, classFilter.length()); |
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} catch (ArrayIndexOutOfBoundsException ex) { |
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return;
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} catch (NullPointerException ex) { |
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return;
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} |
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// Para el primer filtro comprobamos con el tipo de dato de entrada a la pila
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if (i == 0) { |
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if (rasterFilterList.getInitDataType() != rasterFilterList.get(i).getInRasterDataType()) {
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Pattern p = Pattern.compile(RasterUtilities.typesToString(rasterFilterList.get(i).getInRasterDataType())); |
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Matcher m = p.matcher(oldClass);
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String newClass = m.replaceAll(RasterUtilities.typesToString(rasterFilterList.getInitDataType()));
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String strPackage = packageFilter + "." + newClass; |
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renewFilterFromControlTypes(strPackage, i, exceptions); |
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} |
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// Desde el filtro 2 en adelante se compara la salida de uno con la entrada del siguiente
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} else {
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if (rasterFilterList.get(i - 1).getOutRasterDataType() != rasterFilterList.get(i).getInRasterDataType()) { |
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Pattern p = Pattern.compile(RasterUtilities.typesToString(rasterFilterList.get(i).getInRasterDataType())); |
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Matcher m = p.matcher(oldClass);
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String newClass = m.replaceAll(RasterUtilities.typesToString(rasterFilterList.get(i - 1).getOutRasterDataType())); |
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String strPackage = packageFilter + "." + newClass; |
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renewFilterFromControlTypes(strPackage.trim(), i, exceptions); |
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} |
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} |
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} |
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if (exceptions.size() > 0) |
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throw new FilterTypeException(""); |
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if (debug)
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rasterFilterList.show(); |
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} |
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/**
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* Reemplaza un filtro segun su nombre a la lista de filtros, util para cambiar
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* el tipo de datos de un filtro en la pila de filtros.
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* @param nameFilter
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* @param pos
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* @param exceptions
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*/
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private void renewFilterFromControlTypes(String nameFilter, int pos, ArrayList exceptions) { |
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try {
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RasterFilter newFilter = RasterFilter.createFilter(nameFilter); |
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newFilter.params = rasterFilterList.get(pos).params; |
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if (newFilter.params.get("filterName") != null) |
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newFilter.setName((String) newFilter.params.get("filterName")); |
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else
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newFilter.setName(rasterFilterList.get(pos).getName()); |
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rasterFilterList.replace(newFilter, pos); |
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} catch (FilterTypeException e) {
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exceptions.add(e); |
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} |
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} |
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/**
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* M?todo que devuelve true si el tipo de filtro pasado por par?metro est? en
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* la pila y false si no lo est?.
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* @param filter Tipo de filtro a comprobar
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* @return true si est? en la pila y false si no lo est?
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*/
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public boolean isActive(String name) { |
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return rasterFilterList.isActive(name);
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} |
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/**
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* Elimina los filtros de la pila de un determinado tipo
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*
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* @param type Tipo de filtro a eliminar
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* @throws FilterTypeException
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*/
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public void removeFilter(String name) throws FilterTypeException { |
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rasterFilterList.remove(name); |
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this.controlTypes();
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} |
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public ArrayList getStringsFromFilterList() { |
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filterList = new ArrayList(); |
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for (int i = 0; i < rasterFilterList.lenght(); i++) { |
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RasterFilter rf = rasterFilterList.get(i); |
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// Se recorren todos los managers registrados comprobando si corresponde a
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// la clase del filtro
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for (int j = 0; j < managers.size(); j++) |
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filterList = ((IRasterFilterListManager) managers.get(j)).getStringsFromFilterList(filterList, rf); |
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} |
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return filterList;
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.grid.filter.IRasterFilterListManager#createStackFromStrings(java.util.ArrayList, java.lang.String, int)
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*/
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public int createStackFromStrings(ArrayList filters, String fil, int filteri) { |
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return filteri;
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} |
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/**
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* Crea una pila de filtros a partir de un Array de Strings. Cada elemento del array debe
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* tener la forma elemento=valor.
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* @param filters
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* @throws FilterTypeException
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*/
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public void createFilterListFromStrings(ArrayList f) throws FilterTypeException { |
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createFilterListFromStrings(f, new Integer(0)); |
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} |
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/**
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* Crea una pila de filtros a partir de un Array de Strings. Cada elemento del array debe
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* tener la forma elemento=valor.
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* @param pos Posici?n desde la cual se empieza a analizar.
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* @param filters
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* @throws FilterTypeException
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*/
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private void createFilterListFromStrings(ArrayList f, Integer pos) throws FilterTypeException { |
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ArrayList filters = (ArrayList) f.clone(); |
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rasterFilterList.clear(); |
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int filteri = pos.intValue();
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// Busca un filtro activo y despu?s todas las propiedades que necesita ese
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// filtro para ser creado. Una vez las tiene a?ade en la pila el tipo de
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// filtro.
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while ((filters.size() > 0) && (filteri < filters.size())) { |
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String fil = (String) filters.get(filteri); |
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for (int j = 0; j < managers.size(); j++) { |
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try {
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filteri = ((IRasterFilterListManager) managers.get(j)).createFilterListFromStrings(filters, fil, filteri); |
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} catch (NullPointerException e) { |
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} |
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} |
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filteri++; |
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} |
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} |
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/**
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* Obtiene el elemento de una cadena de la forma elemento=valor
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* @param cadena
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* @return
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*/
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public static String getElem(String cadena) { |
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if (cadena != null) { |
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return cadena.substring(0, cadena.indexOf("=")); |
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} else {
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return null; |
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} |
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} |
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/**
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* Obtiene el valor de una cadena de la forma elemento=valor
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* @param cadena
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* @return
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*/
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public static String getValue(String cadena) { |
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if (cadena != null) { |
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return cadena.substring(cadena.indexOf("=") + 1, cadena.length()); |
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} else {
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return null; |
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} |
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} |
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/**
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* Convierte un rango contenido en una array doble en una cadena de strings
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* para poder salvar a xml
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* @param rang
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* @return
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*/
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/*private String rangeToString(int[][] rang) {
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StringBuffer rangoStr = new StringBuffer();
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if (rang != null) {
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for (int i = 0; i < rang.length; i++) {
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rangoStr.append(String.valueOf(rang[i][0]) + ":");
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rangoStr.append(String.valueOf(rang[i][1]) + ":");
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}
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String r = rangoStr.toString();
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if (r.endsWith(":")) {
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r = r.substring(0, r.length() - 1);
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}
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return r;
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} else {
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return null;
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}
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}*/
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/**
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* Convierte una cadena en una lista de rangos numericos para poder asignar
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* transparencias a la imagen
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* @param rang
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* @return
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*/
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/*private int[][] stringToRange(String rang) {
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if ((rang != null) && !rang.equals("null")) {
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ArrayList lista = new ArrayList();
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StringTokenizer tokenizer = new StringTokenizer(rang, ":");
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while (tokenizer.hasMoreTokens())
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lista.add(tokenizer.nextToken());
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int[][] intervalos = new int[(int) (lista.size() / 2)][2];
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for (int i = 0; i < lista.size(); i = i + 2) {
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intervalos[i / 2][0] = Integer.valueOf((String) lista.get(i)).intValue();
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intervalos[i / 2][1] = Integer.valueOf((String) lista.get(i + 1)).intValue();
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}
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return intervalos;
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} else {
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return null;
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}
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}*/
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/**
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* Obtiene la lista de filtros
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* @return RasterFilterList
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*/
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public RasterFilterList getFilterList() {
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return rasterFilterList;
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} |
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/**
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* Carga una clase pasada por par?metro. Como argumento del constructor de la
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* clase se pasar? un RasterFilterStackManager. Esto es usado para instanciar
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* los gestores de filtros registrados
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* @param clase Clase a instanciar
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* @param stackManager Par?metro del constructor de la clase a instanciar
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* @return Objeto que corresponde a la instancia de la clase pasada.
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*/
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public static Object loadClass(Class clase, RasterFilterListManager stackManager) { |
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Object obj = null; |
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Class[] args = { RasterFilterListManager.class }; |
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try {
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Constructor hazNuevo = clase.getConstructor(args);
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Object[] args2 = { stackManager }; |
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obj = hazNuevo.newInstance(args2); |
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} catch (SecurityException e) { |
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e.printStackTrace(); |
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} catch (NoSuchMethodException e) { |
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e.printStackTrace(); |
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} catch (IllegalArgumentException e) { |
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e.printStackTrace(); |
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} catch (InstantiationException e) { |
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e.printStackTrace(); |
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} catch (IllegalAccessException e) { |
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e.printStackTrace(); |
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} catch (InvocationTargetException e) { |
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e.printStackTrace(); |
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} |
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return obj;
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} |
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/**
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* Obtiene el manager registrado a partir de la clase
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* @return
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*/
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public IRasterFilterListManager getManagerByClass(Class c) { |
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for (int j = 0; j < managers.size(); j++) { |
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if (managers.get(j).getClass().equals(c))
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return (IRasterFilterListManager) managers.get(j);
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} |
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return null; |
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} |
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/**
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* Obtiene el manager registrado a partir de la clase de un filtro
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* @return
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*/
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public IRasterFilterListManager getManagerByFilterClass(Class c) { |
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for (int i = 0; i < managers.size(); i++) |
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for (int j = 0; j < ((IRasterFilterListManager) managers.get(i)).getRasterFilterList().size(); j++) |
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if (((IRasterFilterListManager) managers.get(i)).getRasterFilterList().get(j).equals(c))
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return (IRasterFilterListManager) managers.get(i);
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return null; |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.grid.filter.IRasterFilterListManager#getRasterFilterList()
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*/
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public ArrayList getRasterFilterList() { |
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ArrayList filters = new ArrayList(); |
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for (int i = 0; i < managers.size(); i++) { |
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ArrayList auxFilters = ((IRasterFilterListManager) managers.get(i)).getRasterFilterList();
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for (int j = 0; j < auxFilters.size(); j++) { |
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filters.add(auxFilters.get(j)); |
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} |
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} |
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return filters;
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} |
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} |