parent
f5fba1ac23
commit
db367aaa5e
6 changed files with 128 additions and 7 deletions
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@ -1,11 +1,17 @@
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package de.hitec.nhplus.datastorage;
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import org.sqlite.SQLiteConfig;
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import java.sql.Connection;
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import java.sql.DriverManager;
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import java.sql.SQLException;
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import org.sqlite.SQLiteConfig;
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/**
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* The {@link DaoFactory} allows a safe connection to the Database.
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*
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* @author Bernd Heidemann
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* @version 1.0
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*/
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public class ConnectionBuilder {
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private static final String DB_NAME = "nursingHome.db";
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@ -13,6 +19,10 @@ public class ConnectionBuilder {
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private static Connection connection;
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/**
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* @return a Thread-safe {@link Connection} to the Database.
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* @author Bernd Heidemann
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*/
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synchronized public static Connection getConnection() {
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try {
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if (ConnectionBuilder.connection == null) {
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@ -27,6 +37,11 @@ public class ConnectionBuilder {
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return ConnectionBuilder.connection;
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}
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/**
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* Closes the Connection to the Database.
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*
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* @author Bernd Heidemann
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*/
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synchronized public static void closeConnection() {
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try {
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if (ConnectionBuilder.connection != null) {
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@ -3,14 +3,52 @@ package de.hitec.nhplus.datastorage;
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import java.sql.SQLException;
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import java.util.List;
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/**
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* {@link Dao} is the Abbreviation of Data-Access-Object.
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* This Interface has the Basic Methods which are needed on any DAO to work as expected.
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*
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* @param <T> The Model for which that DAO is implemented
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* @author Bernd Heidemann
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* @version 1.0
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* @implSpec The Implementations should be added to the {@link DaoFactory}
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*/
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public interface Dao<T> {
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/**
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* Create a Database Entry from a Model object.
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*
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* @param t the Model instance
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* @author Bernd Heidemann
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*/
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void create(T t) throws SQLException;
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/**
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* Read a Database Entry to a Model object.
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*
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* @param id of the Element in the Database
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* @author Bernd Heidemann
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*/
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T read(int id) throws SQLException;
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/**
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* Read all Database Entries to a {@link List} of Model objects.
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*
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* @author Bernd Heidemann
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*/
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List<T> readAll() throws SQLException;
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/**
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* Update the Database according to the Values of the Model object.
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*
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* @param t the Model instance.
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* @author Bernd Heidemann
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*/
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void update(T t) throws SQLException;
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void deleteById(int id) throws SQLException;
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/**
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* Delete a Database Entry.
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*
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* @param id of the Element in the Database.
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* @author Bernd Heidemann
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*/
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void delete(int id) throws SQLException;
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}
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@ -4,13 +4,28 @@ import de.hitec.nhplus.nurse.database.NurseDao;
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import de.hitec.nhplus.patient.database.PatientDao;
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import de.hitec.nhplus.treatment.database.TreatmentDao;
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/**
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* The {@link DaoFactory} is a Singleton({@link DaoFactory#getInstance}) which should be used to get {@link Dao}s.
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*
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* @author Bernd Heidemann
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* @version 1.0
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*/
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public class DaoFactory {
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private static DaoFactory instance;
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/**
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* A Private Constructor according to the Singleton Pattern.
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*
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* @author Bernd Heidemann
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*/
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private DaoFactory() {
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}
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/**
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* @return {@link DaoFactory}, the Singleton Instance
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* @author Bernd Heidemann
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*/
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public static DaoFactory getInstance() {
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if (DaoFactory.instance == null) {
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DaoFactory.instance = new DaoFactory();
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@ -18,14 +33,26 @@ public class DaoFactory {
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return DaoFactory.instance;
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}
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/**
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* @return a {@link TreatmentDao}
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* @author Bernd Heidemann
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*/
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public TreatmentDao createTreatmentDao() {
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return new TreatmentDao(ConnectionBuilder.getConnection());
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}
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/**
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* @return a {@link PatientDao}
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* @author Bernd Heidemann
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*/
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public PatientDao createPatientDAO() {
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return new PatientDao(ConnectionBuilder.getConnection());
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}
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/**
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* @return a {@link NurseDao}
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* @author Dominik Säume
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*/
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public NurseDao createNurseDAO() {
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return new NurseDao(ConnectionBuilder.getConnection());
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}
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@ -6,18 +6,43 @@ import java.sql.ResultSet;
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import java.sql.SQLException;
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import java.util.List;
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/**
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* The {@link DaoImp} is a Generic Base Implementation of the {@link Dao},
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* which should fit most use cases.
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*
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* @param <T> The Model for which that DAO is implemented
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* @author Bernd Heidemann
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* @version 1.0
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* @implSpec The Implementations should be added to the {@link DaoFactory}
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*/
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public abstract class DaoImp<T> implements Dao<T> {
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protected final Connection connection;
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/**
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* @param connection a Database Connection, which should be gotten from {@link ConnectionBuilder}
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* @author Bernd Heidemann
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*/
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public DaoImp(Connection connection) {
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this.connection = connection;
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}
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/**
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* Creates a new Database Entry from a Model object.
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*
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* @param t the Model instance
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* @author Bernd Heidemann
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*/
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@Override
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public void create(T t) throws SQLException {
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getCreateStatement(t).executeUpdate();
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}
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/**
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* Read a Database Entry to a Model object.
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*
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* @param id of the Element in the Database
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* @author Bernd Heidemann
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*/
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@Override
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public T read(int id) throws SQLException {
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T object = null;
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@ -28,18 +53,35 @@ public abstract class DaoImp<T> implements Dao<T> {
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return object;
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}
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/**
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* Read all Database Entries to a {@link List} of Model objects.
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*
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* @author Bernd Heidemann
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*/
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@Override
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public List<T> readAll() throws SQLException {
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return getListFromResultSet(getReadAllStatement().executeQuery());
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}
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/**
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* Update the Database according to the Values of the Model object.
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*
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* @param t the Model instance.
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* @author Bernd Heidemann
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*/
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@Override
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public void update(T t) throws SQLException {
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getUpdateStatement(t).executeUpdate();
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}
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/**
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* Delete a Database Entry.
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*
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* @param id of the Element in the Database.
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* @author Bernd Heidemann
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*/
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@Override
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public void deleteById(int id) throws SQLException {
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public void delete(int id) throws SQLException {
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getDeleteStatement(id).executeUpdate();
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}
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@ -188,7 +188,7 @@ public class AllPatientController {
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Patient selectedItem = this.tableView.getSelectionModel().getSelectedItem();
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if (selectedItem != null) {
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try {
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DaoFactory.getInstance().createPatientDAO().deleteById(selectedItem.getId());
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DaoFactory.getInstance().createPatientDAO().delete(selectedItem.getId());
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this.tableView.getItems().remove(selectedItem);
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} catch (SQLException exception) {
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exception.printStackTrace();
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@ -5,7 +5,6 @@ import de.hitec.nhplus.datastorage.DaoFactory;
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import de.hitec.nhplus.patient.Patient;
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import de.hitec.nhplus.patient.database.PatientDao;
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import de.hitec.nhplus.treatment.database.TreatmentDao;
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import javafx.beans.property.SimpleIntegerProperty;
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import javafx.beans.property.SimpleStringProperty;
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import javafx.collections.FXCollections;
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import javafx.collections.ObservableList;
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Treatment t = this.treatments.remove(index);
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TreatmentDao dao = DaoFactory.getInstance().createTreatmentDao();
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try {
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dao.deleteById(t.getId());
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dao.delete(t.getId());
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} catch (SQLException exception) {
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exception.printStackTrace();
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}
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