Application: gvSIG desktop

package org.gvsig.data.datastores.vectorial.db;

import org.gvsig.data.ReadException;

import org.gvsig.data.vectorial.IFeature;

import org.gvsig.data.vectorial.IFeatureID;

import org.gvsig.data.vectorial.IFeatureType;

public class DBFeatureID implements IFeatureID{

        protected Object[] featureKey;

        protected DBStore store;

        public DBFeatureID(DBStore store,Object[] featureKey) {

                this.featureKey=featureKey;

                this.store=store;

        }

        public Object[] getKey(){

                return featureKey;

        }

        public IFeature getFeature(IFeatureType featureType) throws ReadException{

                return store.getFeatureByID(featureType, featureKey);

        }

        public boolean equals(Object obj) {

                if (obj instanceof DBFeatureID){

                        DBFeatureID other = (DBFeatureID)obj;

                        if (this.store != other.store)

                                return false;

                        Comparable obj1,obj2;

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

                                obj1 = (Comparable)this.featureKey[i];

                                obj2 = (Comparable)other.featureKey[i];

                                if (obj1 == null || obj2 == null){

                                        if (!(obj1 == null && obj2 == null)){

                                                return false;

                                        }

                                } else{

                                        if (obj1.compareTo(obj2) != 0){

                                                return false;

                                        }

                                }

                        }

                        return true;

                }

                return false;

        }

        /* (non-Javadoc)

         * @see java.lang.Object#hashCode()

         */

        public int hashCode() {

                StringBuffer strBuffer= new StringBuffer();

                strBuffer.append(this.store.hashCode());

                strBuffer.append("[$");

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

                        strBuffer.append(featureKey[i]);

                        strBuffer.append("$,$");

                }

                strBuffer.append("]");

                return strBuffer.toString().hashCode();

        }

}