Application: gvSIG desktop

/* gvSIG. Geographic Information System of the Valencian Government

 *

 * Copyright (C) 2007-2008 Infrastructures and Transports Department

 * of the Valencian Government (CIT)

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version 2

 * of the License, or (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,

 * MA  02110-1301, USA.

 *

 */

/*

 * AUTHORS (In addition to CIT):

 * 2008 IVER T.I. S.A.   {{Task}}

 */

package org.gvsig.fmap.dal.spi;

import java.util.Arrays;

import java.util.Iterator;

import org.gvsig.fmap.dal.DataParameters;

import org.gvsig.fmap.dal.exception.CopyParametersException;

import org.gvsig.fmap.dal.exception.ParameterMissingException;

import org.gvsig.fmap.dal.exception.ValidateDataParametersException;

import org.gvsig.tools.dynobject.DelegatedDynObject;

import org.gvsig.tools.dynobject.DynClass;

import org.gvsig.tools.dynobject.DynField;

import org.gvsig.tools.dynobject.DynObject;

import org.gvsig.tools.dynobject.exception.DynMethodException;

import org.gvsig.tools.dynobject.exception.DynObjectValidateException;

import org.gvsig.tools.persistence.PersistentState;

import org.gvsig.tools.persistence.exception.PersistenceException;

/**

 * @author jmvivo

 *

 */

public abstract class AbstractDataParameters implements DataParameters {

        public Object getDynValue(String name) {

                return getDelegatedDynObject().getDynValue(name);

        }

        public void setDynValue(String name, Object value) {

                getDelegatedDynObject().setDynValue(name, value);

                // return this ???

        }

        public void clear() {

                // TODO Delegar en el DynObject cuando tenga este servicio

                DynField[] fields =

                                getDelegatedDynObject().getDynClass()

                                .getDeclaredDynFields();

                for (int i = 0; i < fields.length; i++) {

                        this.setDynValue(fields[i].getName(), fields[i].getDefaultValue());

                }

        }

        protected void copyValuesTo(AbstractDataParameters target) {

                // TODO Delegar en el DynObject cuando tenga este servicio

                DynField[] fields =

                                getDelegatedDynObject().getDynClass()

                                .getDynFields();

                for (int i = 0; i < fields.length; i++) {

                        target.setDynValue(fields[i].getName(), this.getDynValue(fields[i]

                                        .getName()));

                }

        }

        public DataParameters getCopy() {

                // TODO Delegar en el DynObject cuando tenga este servicio

                AbstractDataParameters copy;

                try {

                        copy = (AbstractDataParameters) this.getClass().newInstance();

                } catch (InstantiationException e) {

                        throw new CopyParametersException("data parameters", e);

                } catch (IllegalAccessException e) {

                        throw new CopyParametersException("data parameters", e);

                }

                this.copyValuesTo(copy);

                return copy;

        }

        public void saveToState(PersistentState state) throws PersistenceException {

                DynField[] fields =

                                getDelegatedDynObject().getDynClass().getDynFields();

                for (int i = 0; i < fields.length; i++) {

                    if (fields[i].isPersistent()) {

                            String name = fields[i].getName(); 

                            Object value = this.getDynValue(fields[i].getName()); 

                                state.set(name,value);

                        }

                }

        }

        public void loadFromState(PersistentState state) throws PersistenceException {

                Iterator it = state.getNames();

                while (it.hasNext()) {

                        String name = (String) it.next();

                        this.setDynValue(name, state.get(name));

                }

        }

        public void delegate(DynObject dynObject) {

                getDelegatedDynObject().delegate(dynObject);

        }

        public DynClass getDynClass() {

                return getDelegatedDynObject().getDynClass();

        }

        public boolean hasDynValue(String name) {

                return getDelegatedDynObject().hasDynValue(name);

        }

        public void implement(DynClass dynClass) {

                getDelegatedDynObject().implement(dynClass);

        }

        public Object invokeDynMethod(String name, DynObject context)

                        throws DynMethodException {

                return getDelegatedDynObject().invokeDynMethod(this, name, context);

        }

        public Object invokeDynMethod(int code, DynObject context)

                        throws DynMethodException {

                return getDelegatedDynObject().invokeDynMethod(this, code, context);

        }

        public void validate() throws ValidateDataParametersException {

            try {

            this.getDynClass().validate(this);

        } catch (DynObjectValidateException e) {

            throw new ValidateDataParametersException(e);

        }

        }

        /**

         * Returns an instance of the {@link DynObject} to delegate to.

         * 

         * @return the delegate {@link DynObject}

         */

        protected abstract DelegatedDynObject getDelegatedDynObject();

}