| gvSIG desktop 1

package org.gvsig.fmap.dal.spi;

import java.util.HashMap;

import java.util.Iterator;

import java.util.Map;

import org.gvsig.fmap.dal.DataParameterDescriptor;

import org.gvsig.fmap.dal.DataParameters;

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

import org.gvsig.tools.persistence.AbstractPersistenceManager;

import org.gvsig.tools.persistence.PersistenceException;

import org.gvsig.tools.persistence.PersistenceValueNotFoundException;

import org.gvsig.tools.persistence.PersistentState;

/* 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}}

 */

/**

 *

 */

/**

 * @author jmvivo

 *

 */

public abstract class AbstractDataParameters implements DataParameters {

        private Map params;

        private Map alias;

        public class DefaultDataParameter implements DataParameterDescriptor {

                private int dataType;

                private String name;

                private Object defaultValue;

                private int availableValuesType;

                private Object[] availableValues;

                private Object minValue;

                private Object maxValue;

                Object value;

                private String description;

                DefaultDataParameter(String name, int dataType, String description,

                                Object defaultValue) {

                        this.name = name;

                        this.description = description;

                        this.dataType = dataType;

                        this.defaultValue = defaultValue;

                        this.availableValuesType = SINGLE;

                        this.minValue = null;

                        this.maxValue = null;

                        this.availableValues = null;

                        this.value = defaultValue;

                }

                DefaultDataParameter(String name, int dataType, String description,

                                Object defaultValue, Object[] avaliableValues) {

                        this.name = name;

                        this.description = description;

                        this.dataType = dataType;

                        this.defaultValue = defaultValue;

                        this.availableValuesType = CHOICE;

                        this.availableValues = avaliableValues;

                        this.minValue = null;

                        this.maxValue = null;

                        this.value = defaultValue;

                }

                DefaultDataParameter(String name, int dataType, String description,

                                Object defaultValue, Object minValue, Object maxValue) {

                        this.name = name;

                        this.description = description;

                        this.dataType = dataType;

                        this.defaultValue = defaultValue;

                        this.availableValuesType = RANGE;

                        this.availableValues = null;

                        this.minValue = minValue;

                        this.maxValue = maxValue;

                        this.value = defaultValue;

                }

                public Object[] getAvailableValues() {

                        return this.availableValues;

                }

                public Object getDefaultValue() {

                        return this.defaultValue;

                }

                public String getName() {

                        return this.name;

                }

                public int getDataType() {

                        return this.dataType;

                }

                void clear() {

                        value = defaultValue;

                }

                Object getValue() {

                        return value;

                }

                void setValue(Object value) {

                        // FIXME: hacer comprobaciones de tipos.

                        this.value = value;

                }

                public int getAvailableValuesType() {

                        return this.availableValuesType;

                }

                public String getDescription() {

                        return this.description;

                }

                public Object getMaxValue() {

                        return this.maxValue;

                }

                public Object getMinValue() {

                        return this.minValue;

                }

        }

        public AbstractDataParameters() {

                this.params = new HashMap();

                this.alias = new HashMap();

        }

        protected DataParameterDescriptor addParameter(String name, int dataType,

                        String description, Object defaultValue) {

                this.params.put(name.toLowerCase(), new DefaultDataParameter(name,

                                dataType,

                                description, defaultValue));

                return null;

        }

        protected DataParameterDescriptor addParameter(String name, int dataType,

                        String description, Object defaultValue, Object[] avaliableValues) {

                this.params.put(name.toLowerCase(), new DefaultDataParameter(name,

                                dataType,

                                description,

                                defaultValue, avaliableValues));

                return null;

        }

        protected DataParameterDescriptor addParameter(String name, int dataType,

                        String description, Object defaultValue, Object minValue,

                        Object maxValue) {

                this.params.put(name, new DefaultDataParameter(name, dataType,

                                description, defaultValue, minValue, maxValue));

                return null;

        }

        public DataParameterDescriptor addAttributeAlias(String name, String alias) {

                Object param = this.params.get(name);

                if( param == null  ){

                        return null ;

                }

                this.alias.put(alias, param);

                return (DataParameterDescriptor) param;

        }

        public Object getAttribute(String name) {

                return ((DefaultDataParameter) this.params.get(name.toLowerCase()))

                                .getValue();

        }

        public DataParameters setAttribute(String name, Object value) {

                ((DefaultDataParameter) this.params.get(name.toLowerCase()))

                                .setValue(value);

                return this;

        }

        public void clear() {

                Iterator it = params.values().iterator();

                while (it.hasNext()) {

                        ((DefaultDataParameter) it.next()).clear();

                }

        }

        public Iterator getAttributes() {

                return params.values().iterator();

        }

        protected void copyValuesTo(AbstractDataParameters target) {

                Iterator it = params.values().iterator();

                while (it.hasNext()) {

                        DefaultDataParameter p = ((DefaultDataParameter) it.next());

                        target.setAttribute(p.getName(), p.getValue());

                }

        }

        public DataParameters getCopy() {

                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 PersistentState getState() throws PersistenceException {

                return AbstractPersistenceManager.getState(this);

        }

        public void loadState(PersistentState state) throws PersistenceException {

                Iterator it = params.values().iterator();

                while (it.hasNext()) {

                        DefaultDataParameter p = ((DefaultDataParameter) it.next());

                        state.set(p.getName(), p.getValue());

                }

        }

        public void setState(PersistentState state) throws PersistenceException {

                Iterator it = state.getNames();

                while (it.hasNext()) {

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

                        try {

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

                        } catch (PersistenceValueNotFoundException e) {

                                // Ignore

                        }

                }

        }

}