Ejercicio previo para el 04/04

db/mysql-with-inserts.sql

@@ -15,6 +15,14 @@ CREATE TABLE `daaexample`.`users` (
 	PRIMARY KEY (`login`)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
 
+CREATE TABLE `daaexample`.`pets` (
+	`id` int NOT NULL AUTO_INCREMENT,
+	`pet_name` varchar(20) NOT NULL,
+	`owner_id` int NOT NULL,
+	PRIMARY KEY (`id`),
+	FOREIGN KEY (`id`) REFERENCES `people`(`id`)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
+
 CREATE USER IF NOT EXISTS 'daa'@'localhost' IDENTIFIED WITH mysql_native_password BY 'daa';
 GRANT ALL ON `daaexample`.* TO 'daa'@'localhost';
 
@@ -26,6 +34,11 @@ INSERT INTO `daaexample`.`people` (`id`,`name`,`surname`) VALUES (0,'Ana','Marí
 INSERT INTO `daaexample`.`people` (`id`,`name`,`surname`) VALUES (0,'María','Nuevo');
 INSERT INTO `daaexample`.`people` (`id`,`name`,`surname`) VALUES (0,'Alba','Fernández');
 INSERT INTO `daaexample`.`people` (`id`,`name`,`surname`) VALUES (0,'Asunción','Jiménez');
+INSERT INTO `daaexample`.`pets` (`id`,`pet_name`,`owner_id`) VALUES (0,'Tofe',1);
+INSERT INTO `daaexample`.`pets` (`id`,`pet_name`,`owner_id`) VALUES (0,'Pipo',4);
+INSERT INTO `daaexample`.`pets` (`id`,`pet_name`,`owner_id`) VALUES (0,'Niki',2);
+INSERT INTO `daaexample`.`pets` (`id`,`pet_name`,`owner_id`) VALUES (0,'Tim',3);
+INSERT INTO `daaexample`.`pets` (`id`,`pet_name`,`owner_id`) VALUES (0,'Yeke',6);
 
 -- The password for each user is its login suffixed with "pass". For example, user "admin" has the password "adminpass".
 INSERT INTO `daaexample`.`users` (`login`,`password`,`role`)

db/mysql.sql

@@ -15,5 +15,19 @@ CREATE TABLE `daaexample`.`users` (
 	PRIMARY KEY (`login`)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
 
-CREATE USER IF NOT EXISTS 'daa'@'localhost' IDENTIFIED WITH mysql_native_password BY 'daa';
+CREATE TABLE `daaexample`.`pets` (
+	`id` int NOT NULL AUTO_INCREMENT,
+	`pet_name` varchar(20) NOT NULL,
+	`owner_id` int NOT NULL,
+	PRIMARY KEY (`id`),
+	FOREIGN KEY (owner_id) REFERENCES `daaexample`.`people`(id)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
+
+CREATE USER IF NOT EXISTS 'daa'@'localhost';
+UPDATE mysql.user SET plugin = 'mysql_native_password' WHERE user = 'root';
 GRANT ALL ON `daaexample`.* TO 'daa'@'localhost';
+
+INSERT INTO `daaexample`.`users` (`login`,`password`,`role`)
+VALUES ('admin', 'admin','ADMIN');
+INSERT INTO `daaexample`.`users` (`login`,`password`,`role`)
+VALUES ('user', 'user','ADMIN');

run.bat

+cmd /k mysql -u root -p < db/mysql-with-inserts.sql
+cmd /k mvn -Prun -DskipTests=true package cargo:start fizzed-watcher:run

src/main/java/es/uvigo/esei/daa/DAAExampleApplication.java

@@ -11,6 +11,8 @@ import javax.ws.rs.ApplicationPath;
 import javax.ws.rs.core.Application;
 
 import es.uvigo.esei.daa.rest.PeopleResource;
+import es.uvigo.esei.daa.rest.PetsResource;
+import es.uvigo.esei.daa.rest.UsersResource;
 import es.uvigo.esei.daa.rest.UsersResource;
 
 /**
@@ -26,7 +28,8 @@ public class DAAExampleApplication extends Application {
 	public Set<Class<?>> getClasses() {
 		return Stream.of(
 			PeopleResource.class,
-			UsersResource.class
+			UsersResource.class,
+			PetsResource.class
 		).collect(toSet());
 	}
 	

src/main/java/es/uvigo/esei/daa/dao/PeopleDAO.java

@@ -52,6 +52,32 @@ public class PeopleDAO extends DAO {
 		}
 	}
 	
+	public String getFullName(int id)
+			throws DAOException, IllegalArgumentException {
+			StringBuilder toret = new StringBuilder();
+				try (final Connection conn = this.getConnection()) {
+					final String query = "SELECT name, surname FROM people WHERE id=?";
+					
+					try (final PreparedStatement statement = conn.prepareStatement(query)) {
+						statement.setInt(1, id);
+						
+						try (final ResultSet result = statement.executeQuery()) {
+							if (result.next()) {
+								toret.append(result.getString("name")).append(" ").append(result.getString("surname"));
+								return toret.toString();
+							} else {
+								throw new IllegalArgumentException("Invalid id");
+							}
+						}
+					}
+				} catch (SQLException e) {
+					LOG.log(Level.SEVERE, "Error getting a person", e);
+					throw new DAOException(e);
+				}
+			}
+	
+	
+	
 	/**
 	 * Returns a list with all the people persisted in the system.
 	 * 

src/main/java/es/uvigo/esei/daa/dao/PetsDAO.java

+package es.uvigo.esei.daa.dao;
+import java.sql.Connection;
+import es.uvigo.esei.daa.dao.PeopleDAO;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.sql.Statement;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.logging.Level;
+
+import es.uvigo.esei.daa.entities.Person;
+import es.uvigo.esei.daa.entities.Pet;
+
+public class PetsDAO extends DAO{
+	private final static java.util.logging.Logger LOG = java.util.logging.Logger.getLogger(PetsDAO.class.getName());
+	PeopleDAO pdao = new PeopleDAO();
+	
+	
+	//retorna una mascota a partir de un id
+	public Pet get(int id)
+	throws DAOException, IllegalArgumentException {
+		try (final Connection conn = this.getConnection()) {
+			final String query = "SELECT * FROM pets WHERE id=?";
+			
+			try (final PreparedStatement statement = conn.prepareStatement(query)) {
+				statement.setInt(1, id);
+				
+				try (final ResultSet result = statement.executeQuery()) {
+					if (result.next()) {
+						return rowToEntity(result);
+					} else {
+						throw new IllegalArgumentException("Invalid id");
+					}
+				}
+			}
+		} catch (SQLException e) {
+			LOG.log(Level.SEVERE, "Error getting a pet", e);
+			throw new DAOException(e);
+		}
+	}
+	
+	//devuelve una lista con todas las mascotas registradas
+	public List<Pet> list() throws DAOException {
+		try (final Connection conn = this.getConnection()) {
+			final String query = "SELECT * FROM pets";
+			
+			try (final PreparedStatement statement = conn.prepareStatement(query)) {
+				try (final ResultSet result = statement.executeQuery()) {
+					final List<Pet> pets = new LinkedList<>();
+					
+					while (result.next()) {
+						pets.add(rowToEntity(result));
+					}
+					
+					return pets;
+				}
+			}
+		} catch (SQLException e) {
+			LOG.log(Level.SEVERE, "Error listing pets", e);
+			throw new DAOException(e);
+		}
+	} 
+	
+	//registra una mascota
+	public Pet add(String pet_name, int owner_id)
+			throws DAOException, IllegalArgumentException {
+				boolean esPersona = false;
+				PeopleDAO peopleDao = new PeopleDAO();
+				List<Person> listaPeople = peopleDao.list();
+				for(Person p : listaPeople) {
+					//LOG.log(Level.INFO, ""+p.getId()+" "+owner_id);
+					if(p.getId() == owner_id || owner_id == 0) {
+						esPersona = true;
+					}
+				}
+				if(!esPersona) {
+					throw new IllegalArgumentException("owner_id doesn´t exist");
+				}
+				if (pet_name == null || owner_id < 0) {
+					throw new IllegalArgumentException("pet name and owner_id can't be null");
+				}
+				
+				try (Connection conn = this.getConnection()) {
+					LOG.log(Level.INFO, "ID: "+owner_id);
+					final String query = "INSERT INTO pets VALUES(null, ?, ?)";
+					try (PreparedStatement statement = conn.prepareStatement(query, Statement.RETURN_GENERATED_KEYS)) {
+						statement.setString(1, pet_name);
+						statement.setInt(2, owner_id);
+						if (statement.executeUpdate() == 1) {
+							try (ResultSet resultKeys = statement.getGeneratedKeys()) {
+								if (resultKeys.next()) {
+									Pet p = new Pet(resultKeys.getInt(1), pet_name, owner_id);
+									//LOG.log(Level.INFO, p.toString());
+									return p;
+								} else {
+									LOG.log(Level.SEVERE, "Error retrieving inserted id");
+									throw new SQLException("Error retrieving inserted id");
+								}
+							}
+						} else {
+							LOG.log(Level.SEVERE, "Error inserting value");
+							throw new SQLException("Error inserting value");
+						}
+					}
+				} catch (SQLException e) {
+					LOG.log(Level.SEVERE, "Error adding a pet", e);
+					throw new DAOException(e);
+				}
+			}
+	
+	//modifica los datos de una persona
+	public void modify(Pet pet)
+			throws DAOException, IllegalArgumentException {
+				if (pet == null) {
+					throw new IllegalArgumentException("pet can't be null");
+				}
+				
+				try (Connection conn = this.getConnection()) {
+					final String query = "UPDATE pets SET pet_name=?, owner_id=? WHERE id=?";
+					
+					try (PreparedStatement statement = conn.prepareStatement(query)) {
+						statement.setString(1, pet.getpet_name());
+						statement.setInt(2, pet.getowner_id());
+						statement.setInt(3, pet.getId());
+						
+						if (statement.executeUpdate() != 1) {
+							throw new IllegalArgumentException("name and owner can't be null");
+						}
+					}
+				} catch (SQLException e) {
+					LOG.log(Level.SEVERE, "Error modifying a pet", e);
+					throw new DAOException();
+				}
+			}
+	
+	//elimina una mascota a partir de su id
+	public void delete(int id)
+			throws DAOException, IllegalArgumentException {
+				try (final Connection conn = this.getConnection()) {
+					final String query = "DELETE FROM pets WHERE id=?";
+					
+					try (final PreparedStatement statement = conn.prepareStatement(query)) {
+						statement.setInt(1, id);
+						
+						if (statement.executeUpdate() != 1) {
+							throw new IllegalArgumentException("Invalid id");
+						}
+					}
+				} catch (SQLException e) {
+					LOG.log(Level.SEVERE, "Error deleting a pet", e);
+					throw new DAOException(e);
+				}
+			}
+			
+			private Pet rowToEntity(ResultSet row) throws SQLException {
+				return new Pet(
+					row.getInt("id"),
+					row.getString("pet_name"),
+					row.getInt("owner_id")
+				);
+			}
+			
+	
+}

src/main/java/es/uvigo/esei/daa/entities/Pet.java

+package es.uvigo.esei.daa.entities;
+
+import static java.util.Objects.requireNonNull;
+
+public class Pet {
+	private int id;
+	private String pet_name;
+	private int owner_id;
+	
+	public Pet() {} //Constructor para la conversion JSON
+	
+	public Pet(int id, String pet_name, int owner_id){
+		this.id = id;
+		this.setPetName(pet_name);
+		this.setOwnerId(owner_id);
+	}
+	
+	public int getId() {
+		return this.id;
+	}
+	
+	public String getpet_name(){
+		return this.pet_name;
+	}
+	
+	public int getowner_id() {
+		return this.owner_id;
+	}
+	
+	public void setPetName(String pet_name) {
+		this.pet_name = requireNonNull(pet_name, "Pet name can't be null");
+	}
+	
+	public void setOwnerId(int owner_id) {
+		this.owner_id = requireNonNull(owner_id, "Owner id can´t be null");
+	}
+	
+	public void setPetId(int id) {
+		this.id = id;
+	}
+	@Override
+	public String toString() {
+		StringBuilder toret = new StringBuilder();
+		toret.append("Id: ").append(getId()).append("\n");
+		toret.append("Nombre: ").append(getpet_name()).append("\n");
+		toret.append("Owner id: ").append(getowner_id()).append("\n");
+		return toret.toString();
+		
+	}
+	
+	@Override
+	public int hashCode() {
+		final int prime = 31;
+		int result = 1;
+		result = prime * result + id;
+		return result;
+	}
+
+	@Override
+	public boolean equals(Object obj) {
+		if (this == obj)
+			return true;
+		if (obj == null)
+			return false;
+		if (!(obj instanceof Pet))
+			return false;
+		Pet other = (Pet) obj;
+		if (id != other.id)
+			return false;
+		return true;
+	}
+	
+}

src/main/java/es/uvigo/esei/daa/rest/PeopleResource.java

@@ -76,6 +76,30 @@ public class PeopleResource {
 		}
 	}
 	
+	@GET
+	@Path("/name/{id}")
+	public Response getFullName(
+		@PathParam("id") int id
+	) {
+		try {
+			final String name = this.dao.getFullName(id);
+			
+			return Response.ok(name).build();
+		} catch (IllegalArgumentException iae) {
+			LOG.log(Level.FINE, "Invalid person id in get full name method", iae);
+			
+			return Response.status(Response.Status.BAD_REQUEST)
+				.entity(iae.getMessage())
+			.build();
+		} catch (DAOException e) {
+			LOG.log(Level.SEVERE, "Error getting a person", e);
+			
+			return Response.serverError()
+				.entity(e.getMessage())
+			.build();
+		}
+	}
+
 	/**
 	 * Returns the complete list of people stored in the system.
 	 * 

src/main/java/es/uvigo/esei/daa/rest/PetsResource.java

+package es.uvigo.esei.daa.rest;
+
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+import javax.ws.rs.GET;
+import javax.ws.rs.POST;
+import javax.ws.rs.PUT;
+import javax.ws.rs.Path;
+import javax.ws.rs.PathParam;
+import javax.ws.rs.Produces;
+import javax.ws.rs.core.MediaType;
+import javax.ws.rs.core.Response;
+import javax.ws.rs.DELETE;
+import javax.ws.rs.FormParam;
+
+import es.uvigo.esei.daa.dao.DAOException;
+import es.uvigo.esei.daa.dao.PetsDAO;
+import es.uvigo.esei.daa.entities.Pet;
+
+//necesario registrar cada resource en DAAExampleApplication
+@Path("/pets")
+@Produces(MediaType.APPLICATION_JSON)
+public class PetsResource {
+	private final static Logger LOG = Logger.getLogger(PetsResource.class.getName());
+	
+	private final PetsDAO dao;
+	
+	public PetsResource() {
+		this(new PetsDAO());
+	}
+	
+	PetsResource(PetsDAO dao){
+		this.dao = dao;
+	}
+	
+	@GET
+	@Path("/{id}")
+	public Response get(
+			@PathParam("id") int id
+			) {
+				try {
+					final Pet pet = this.dao.get(id);
+					return Response.ok(pet).build();
+				}catch(IllegalArgumentException ie) {
+					LOG.log(Level.FINE, "Invalid pet id in get method", ie);
+					return Response.status(Response.Status.BAD_REQUEST)
+							.entity(ie.getMessage())
+						.build();
+				} catch (DAOException e) {
+					return Response.serverError()
+							.entity(e.getMessage())
+						.build();
+				}	
+	}
+	
+	@GET
+	public Response list() {
+		try {
+			return Response.ok(this.dao.list()).build();
+		} catch (DAOException e) {
+			LOG.log(Level.SEVERE, "Error listing pets", e);
+			return Response.serverError().entity(e.getMessage()).build();
+		}
+	}
+	
+	@POST
+	public Response add(
+			@FormParam("pet_name") String name,
+			@FormParam("owner_id") int owner_id
+			) {
+		if(name == null || owner_id <= 0) {
+			return Response.status(Response.Status.BAD_REQUEST).entity("Mal formada").build();
+		}
+		else {
+		try {
+			//LOG.log(Level.INFO, "ID REST: "+owner_id);
+			final Pet newPet = this.dao.add(name, owner_id);
+			return Response.ok(newPet).build();
+		} catch (IllegalArgumentException iae) {
+			LOG.log(Level.FINE, "Invalid pet id in add", iae);
+			return Response.status(Response.Status.BAD_REQUEST)
+					.entity(iae.getMessage())
+				.build();
+		} catch (DAOException e) {
+			LOG.log(Level.SEVERE, "Error adding a pet", e);
+			
+			return Response.serverError()
+				.entity(e.getMessage())
+			.build();
+		}
+		}
+	}
+	
+	@PUT
+	@Path("/{id}")
+	public Response modify(
+		@PathParam("id") int id, 
+		@FormParam("pet_name") String name, 
+		@FormParam("owner_id") int owner
+	) {
+		if(id < 0 || name == null || owner <= 0) {
+			return Response.status(Response.Status.BAD_REQUEST).entity("Mal formada").build();
+		}
+		else {
+		try {
+			final Pet modifiedPet = new Pet(id, name, owner);
+			//LOG.log(Level.INFO,modifiedPet.toString());
+			this.dao.modify(modifiedPet);
+			
+			return Response.ok(modifiedPet).build();
+		} catch (NullPointerException npe) {
+			final String message = String.format("Invalid data for pet (name: %s, owner: %i)", name, owner);
+			
+			LOG.log(Level.FINE, message);
+			
+			return Response.status(Response.Status.BAD_REQUEST)
+				.entity(message)
+			.build();
+		} catch (IllegalArgumentException iae) {
+			LOG.log(Level.FINE, "Invalid pet id in modify method", iae);
+			
+			return Response.status(Response.Status.BAD_REQUEST)
+				.entity(iae.getMessage())
+			.build();
+		} catch (DAOException e) {
+			LOG.log(Level.SEVERE, "Error modifying a pet", e);
+			
+			return Response.serverError()
+				.entity(e.getMessage())
+			.build();
+		}
+		}
+	}
+	
+	@DELETE
+	@Path("/{id}")
+	public Response delete(
+		@PathParam("id") int id
+	) {
+		if(id <= 0) {
+			return Response.status(Response.Status.BAD_REQUEST).entity("Mal formada").build();
+		}
+		try {
+			this.dao.delete(id);
+			
+			return Response.ok(id).build();
+		} catch (IllegalArgumentException iae) {
+			LOG.log(Level.FINE, "Invalid pet id in delete method", iae);
+			
+			return Response.status(Response.Status.BAD_REQUEST)
+				.entity(iae.getMessage())
+			.build();
+		} catch (DAOException e) {
+			LOG.log(Level.SEVERE, "Error deleting a pet", e);
+			
+			return Response.serverError()
+				.entity(e.getMessage())
+			.build();
+		}
+	}
+	
+	
+}

src/main/webapp/WEB-INF/web.xml

@@ -60,6 +60,21 @@
     </auth-constraint>
   </security-constraint>
   
+  <security-constraint>
+    <web-resource-collection>
+      <web-resource-name>Pet Admin Area</web-resource-name>
+      <url-pattern>/rest/pets/*</url-pattern>
+      <http-method>GET</http-method>
+      <http-method>PUT</http-method>
+      <http-method>DELETE</http-method>
+      <http-method>POST</http-method>
+    </web-resource-collection>
+    <auth-constraint>
+      <role-name>ADMIN</role-name>
+    </auth-constraint>
+  </security-constraint>
+  
+
   <!-- Security roles referenced by this web application -->
   <security-role>
     <role-name>ADMIN</role-name>

src/main/webapp/js/dao/people.js

@@ -45,6 +45,13 @@ var PeopleDAO = (function() {
 		type : 'DELETE',
 	    }, done, fail, always);
 	};
+	
+	this.getFullName = function(id, done, fail, always) {
+	    requestByAjax({
+		url : resourcePath + "name/" + id,
+		type : 'GET'
+	    }, done, fail, always);
+	};
     }
 
     return PeopleDAO;

src/main/webapp/js/dao/pets.js

+var PetsDAO = (function() {
+    var resourcePath = "rest/pets/";
+    var requestByAjax = function(data, done, fail, always) {
+	done = typeof done !== 'undefined' ? done : function() {};
+	fail = typeof fail !== 'undefined' ? fail : function() {};
+	always = typeof always !== 'undefined' ? always : function() {};
+
+	let authToken = localStorage.getItem('authorization-token');
+	if (authToken !== null) {
+	    data.beforeSend = function(xhr) {
+		xhr.setRequestHeader('Authorization', 'Basic ' + authToken);
+	    };
+	}
+
+	$.ajax(data).done(done).fail(fail).always(always);
+    };
+
+    function PetsDAO() {
+	this.listPets = function(done, fail, always) {
+	    requestByAjax({
+		url : resourcePath,
+		type : 'GET'
+	    }, done, fail, always);
+	};
+
+	this.addPet = function(pet, done, fail, always) {
+	    requestByAjax({
+		url : resourcePath,
+		type : 'POST',
+		data : pet
+	    }, done, fail, always);
+	};
+
+	this.modifyPet = function(pet, done, fail, always) {
+	    requestByAjax({
+		url : resourcePath + pet.id,
+		type : 'PUT',
+		data : pet
+	    }, done, fail, always);
+	};
+
+	this.deletePet = function(id, done, fail, always) {
+	    requestByAjax({
+		url : resourcePath + id,
+		type : 'DELETE',
+	    }, done, fail, always);
+	};
+    }
+
+    return PetsDAO;
+})();
\ No newline at end of file

src/main/webapp/js/view/people.js

@@ -130,8 +130,9 @@ var PeopleView = (function() {
 			'<table id="' + listId + '" class="table">\
 				<thead>\
 					<tr class="row">\
-						<th class="col-sm-4">Nombre</th>\
-						<th class="col-sm-5">Apellido</th>\
+						<th class="col-sm-2">Id</th>\
+						<th class="col-sm-3">Nombre</th>\
+						<th class="col-sm-3">Apellido</th>\
 						<th class="col-sm-3">&nbsp;</th>\
 					</tr>\
 				</thead>\
@@ -163,8 +164,9 @@ var PeopleView = (function() {
 
 	var createPersonRow = function(person) {
 		return '<tr id="person-'+ person.id +'" class="row">\
-			<td class="name col-sm-4">' + person.name + '</td>\
-			<td class="surname col-sm-5">' + person.surname + '</td>\
+			<td class="id col-sm-1">' + person.id + '</td>\
+			<td class="name col-sm-3">' + person.name + '</td>\
+			<td class="surname col-sm-3">' + person.surname + '</td>\
 			<td class="col-sm-3">\
 				<a class="edit btn btn-primary" href="#">Editar</a>\
 				<a class="delete btn btn-warning" href="#">Eliminar</a>\

src/main/webapp/js/view/pets.js

+var PetsView = (function() {
+	var dao;
+	var peopleDAO;
+	// Referencia a this que permite acceder a las funciones públicas desde las funciones de jQuery.
+	var self;
+	
+	var formId = 'pet-form';
+	var listId = 'pet-list';
+	var formQuery = '#' + formId;
+	var listQuery = '#' + listId;
+	
+	function PetsView(peopleDao, petsDao, formContainerId, listContainerId) {
+		peopleDAO = peopleDao;
+		dao = petsDao;
+		var dict = {}
+		self = this;
+		
+		insertPetsForm($('#' + formContainerId));
+		insertPetsList($('#' + listContainerId));
+		
+		this.init = function() {
+			dao.listPets(function(pet) {
+				$.each(pet, function(key, pet) {
+					appendToTable(pet);
+				});
+			},
+			function() {
+			    	alert('No has sido posible acceder al listado de mascotas.');
+			});
+			
+			peopleDAO.listPeople(function(people) {
+				$.each(people, function(key, people) {	
+					 $('#pet_owner_select').append($("<option></option>").attr("value", people.id).text(people.name + ' ' +people.surname));
+				});
+			},
+			function() {
+			});
+			// La acción por defecto de enviar formulario (submit) se sobreescribe
+			// para que el envío sea a través de AJAX
+			$(formQuery).submit(function(event) {
+				var pet = self.getPetInForm();
+				console.log(pet);
+				if (self.isEditing()) {
+					dao.modifyPet(pet,
+						function(pet) {
+						console.log(pet);
+							$('#pet-' + pet.id + ' td.pet_name').text(pet.pet_name);
+							$('#pet-' + pet.id + ' td.owner_id').text(pet.owner_id);
+							self.resetForm();
+						},
+						showErrorMessage,
+						self.enableForm
+					);
+				} else {
+					dao.addPet(pet,
+						function(pet) {
+							console.log(pet);
+							appendToTable(pet);
+							self.resetForm();
+						},
+						showErrorMessage,
+						self.enableForm
+					);
+				}
+				
+				return false;
+			});
+			
+			$('#btnClear').click(this.resetForm);
+		};
+		
+		this.reloadSelect = function(){
+			$('#pet_owner_select').find('option').remove().end();
+			peopleDAO.listPeople(function(people) {
+					$.each(people, function(key, people) {	
+						 $('#pet_owner_select').append($("<option></option>").attr("value", people.id).text(people.name + ' ' +people.surname));
+					});
+				},
+				function() {
+				});
+		}
+		
+		this.getPetInForm = function() {
+			var form = $(formQuery);
+			return {
+				'id': form.find('input[name="id"]').val(),
+				'pet_name': form.find('input[name="pet_name"]').val(),
+				'owner_id': $('#pet_owner_select option:selected').val()
+			};
+		};
+		
+	
+
+		this.getPetInRow = function(id) {
+			var row = $('#pet-' + id);
+
+			if (row !== undefined) {
+				return {
+					'id': id,
+					'pet_name': row.find('td.pet_name').text(),
+					'owner_id': row.find('td.owner_id').text()
+				};
+			} else {
+				return undefined;
+			}
+		};
+		
+		this.editPet = function(id) {
+			var row = $('#pet-' + id);
+
+			if (row !== undefined) {
+				var form = $(formQuery);
+				
+				form.find('input[name="id"]').val(id);
+				form.find('input[name="pet_name"]').val(row.find('td.pet_name').text());
+				form.find('input[name="owner_id"]').val(row.find('td.owner_id').text());
+				
+				$('input#btnSubmit').val('Modificar');
+			}
+		};
+		
+		this.deletePet = function(id) {
+			if (confirm('Está a punto de eliminar a una mascota. ¿Está seguro de que desea continuar?')) {
+				dao.deletePet(id,
+					function() {
+						$('tr#pet-' + id).remove();
+					},
+					showErrorMessage
+				);
+			}
+		};
+
+		this.isEditing = function() {
+			return $(formQuery + ' input[name="id"]').val() != "";
+		};
+
+		this.disableForm = function() {
+			$(formQuery + ' input').prop('disabled', true);
+		};
+
+		this.enableForm = function() {
+			$(formQuery + ' input').prop('disabled', false);
+		};
+
+		this.resetForm = function() {
+			$(formQuery)[0].reset();
+			$(formQuery + ' input[name="id"]').val('');
+			$('#btnSubmit').val('Crear');
+		};
+	};
+	
+	var insertPetsList = function(parent) {
+		parent.append(
+			'<table id="' + listId + '" class="table">\
+				<thead>\
+					<tr class="row">\
+						<th class="col-sm-4">Nombre</th>\
+						<th class="col-sm-5">Propietario</th>\
+						<th class="col-sm-3">&nbsp;</th>\
+					</tr>\
+				</thead>\
+				<tbody>\
+				</tbody>\
+			</table>'
+		);
+	};
+	
+
+	var insertPetsForm = function(parent) {
+		parent.append(
+			'<form id="' + formId + '" class="mb-5 mb-10">\
+				<input name="id" type="hidden" value=""/>\
+				<div class="row">\
+					<div class="col-sm-4">\
+						<input name="pet_name" type="text" value="" placeholder="Nombre" class="form-control" required/>\
+					</div>\
+					<div class="col-sm-5">\
+						<select id="pet_owner_select" name="pet_owner" class="form-control">\
+						</select>\
+					</div>\
+					<div class="col-sm-3">\
+						<input id="btnSubmit" type="submit" value="Crear" class="btn btn-primary" />\
+						<input id="btnClear" type="reset" value="Limpiar" class="btn" />\
+					</div>\
+				</div>\
+			</form>'
+		);
+	};
+
+	var createPetRow = function(pet) {
+		return '<tr id="pet-'+ pet.id +'" class="row">\
+			<td class="pet_name col-sm-4">' + pet.pet_name + '</td>\
+			<td class="owner_id col-sm-5">' + pet.owner_id + '</td>\
+			<td class="col-sm-3">\
+				<a class="edit btn btn-primary" href="#">Editar</a>\
+				<a class="delete btn btn-warning" href="#">Eliminar</a>\
+			</td>\
+		</tr>';
+	};
+
+	var showErrorMessage = function(jqxhr, textStatus, error) {
+		alert(textStatus + ": " + error);
+	};
+
+	var addRowListeners = function(pet) {
+		$('#pet-' + pet.id + ' a.edit').click(function() {
+			self.editPet(pet.id);
+		});
+		
+		$('#pet-' + pet.id + ' a.delete').click(function() {
+			self.deletePet(pet.id);
+		});
+	};
+
+	var appendToTable = function(pet) {
+		$(listQuery + ' > tbody:last')
+			.append(createPetRow(pet));
+		addRowListeners(pet);
+	};
+	
+	return PetsView;
+})();

src/main/webapp/main.html

@@ -15,35 +15,68 @@
 				<a href="#" class="navbar-brand d-flex align-items-center">
 					<strong>DAA	Example</strong>
 				</a>
+				<button id="cambio" class="btn btn-dark">Gestionar mascotas</button>
 				<button id="logout" class="btn btn-dark">Cerrar sesión</button>				
 			</div>
 		</div>
 	</header>
 
 	<div class="container">
-		<div id="people-container">
+		<!--<div id="people-container">
 			<h1 class="display-5 mt-3 mb-3">Personas</h1>
+		</div>-->
+		<div id ="people-container">
+			<h1 class="display-5 mt-3 mb-3"> Personas </h1>
 		</div>
+		
+		<div id="pet-container">
+			<h1 class="display-5 mt-3 mb-3"> Mascotas </h1>
+		</div>
+		
 	</div>
 	
 	<script type="text/javascript"
 		src="http://code.jquery.com/jquery-2.2.4.min.js"></script>
+	<script type="text/javascript" src="js/dao/pets.js"></script>
 	<script type="text/javascript" src="js/dao/people.js"></script>
+	<script type="text/javascript" src="js/view/pets.js"></script>
 	<script type="text/javascript" src="js/view/people.js"></script>
 	<script type="text/javascript" src="js/login.js"></script>
 	<script type="text/javascript">
 	$(document).ready(
 		function() {
+			var petView;
+			var peopleView;
+			var select;
+			
 		    $('#logout').click(function(event) {
 				event.preventDefault();
 				doLogout();
 		    });
 		    
-		    var view = new PeopleView(new PeopleDAO(),
-		    	'people-container', 'people-container'
+		    $('#cambio').click(function(event){
+		    	if($('#people-container').is(':visible')){
+		    		petView.reloadSelect();
+				    $('#people-container').hide();
+				    $('#pet-container').show();
+				    $("#cambio").html('Gestionar personas');
+		    	}
+		    	else{
+		    		 $('#people-container').show();
+					 $('#pet-container').hide();
+					 $("#cambio").html('Gestionar mascotas');
+		    	}
+		    });
+		    
+		    peopleView = new PeopleView(new PeopleDAO(), 'people-container', 'people-container');
+		    peopleView.init();
+		    petView = new PetsView(new PeopleDAO(), new PetsDAO(),
+			    	'pet-container', 'pet-container'
 		    	);	
+		    petView.init();
+		    
+		    $('#pet-container').hide();
 		    
-		    view.init();
 		});
     </script>
 </body>

src/test/java/es/uvigo/esei/daa/dataset/PetsDataset.java

+package es.uvigo.esei.daa.dataset;
+
+import static java.util.Arrays.binarySearch;
+import static java.util.Arrays.stream;
+
+import java.util.Arrays;
+import java.util.function.Predicate;
+
+import es.uvigo.esei.daa.entities.Pet;
+
+public final class PetsDataset {
+	private PetsDataset() {}
+	
+	public static Pet[] pets() {
+		return new Pet[] {
+			new Pet(1, "Tofe", 2),
+			new Pet(2, "Niki", 3),
+			new Pet(3, "Tobi", 1),
+			new Pet(4, "Tara", 2),
+			new Pet(5, "Tim", 5),
+			new Pet(6, "Trosky", 6),
+		};
+	}
+	
+	public static Pet[] petsWithout(int ... ids) {
+		Arrays.sort(ids);
+		
+		final Predicate<Pet> hasValidId = pet ->
+			binarySearch(ids, pet.getId()) < 0;
+		
+		return stream(pets())
+			.filter(hasValidId)
+		.toArray(Pet[]::new);
+	}
+	
+	public static Pet pet(int id) {
+		return stream(pets())
+			.filter(pet -> pet.getId() == id)
+			.findAny()
+		.orElseThrow(IllegalArgumentException::new);
+	}
+	
+	public static Integer existentId() {
+		return 5;
+	}
+	
+	public static Integer nonExistentId() {
+		return 1234;
+	}
+
+	public static Pet existentPet() {
+		return pet(existentId());
+	}
+	
+	public static Pet nonExistentPet() {
+		return new Pet(nonExistentId(), "Baddy", 4);
+	}
+	
+	public static String newPetName() {
+		return "Miku";
+	}
+	
+	public static Integer newOwnerId() {
+		return 4;
+	}
+	
+	public static Pet newPet() {
+		return new Pet(pets().length + 1, newPetName(), newOwnerId());
+	}
+}
\ No newline at end of file

src/test/java/es/uvigo/esei/daa/entities/PetsUnitTest.java

+package es.uvigo.esei.daa.entities;
+
+import static org.hamcrest.CoreMatchers.equalTo;
+import static org.hamcrest.CoreMatchers.is;
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.junit.Assert.assertTrue;
+
+import org.junit.Test;
+
+import nl.jqno.equalsverifier.EqualsVerifier;
+import nl.jqno.equalsverifier.Warning;
+
+public class PetsUnitTest {
+	@Test
+	public void testPetIntStringInt() {
+		final int id = 1;
+		final String name = "Laia";
+		final int ownerId = 4;
+		
+		final Pet pet = new Pet(id, name, ownerId);
+		
+		assertThat(pet.getId(), is(equalTo(id)));
+		assertThat(pet.getpet_name(), is(equalTo(name)));
+		assertThat(pet.getowner_id(), is(equalTo(ownerId)));
+	}
+
+	@Test(expected = NullPointerException.class)
+	public void testPetIntStringIntNullName() {
+		new Pet(1, null, 2);
+	}
+
+	@Test
+	public void testSetName() {
+		final int id = 1;
+		final int ownerId = 2;
+		
+		final Pet pet = new Pet(id, "Laia", 2);
+		pet.setPetName("Beethoven");
+		
+		assertThat(pet.getId(), is(equalTo(id)));
+		assertThat(pet.getpet_name(), is(equalTo("Beethoven")));
+		assertThat(pet.getowner_id(), is(equalTo(ownerId)));
+	}
+
+	@Test(expected = NullPointerException.class)
+	public void testSetNullName() {
+		final Pet pet= new Pet(1, "Beethoven", 2);
+		
+		pet.setPetName(null);
+	}
+
+	@Test
+	public void testSetOwnerId() {
+		final int id = 1;
+		final String name = "Beethoven";
+		
+		final Pet pet= new Pet(id, name, 2);
+		pet.setOwnerId(6);
+		
+		assertThat(pet.getId(), is(equalTo(id)));
+		assertThat(pet.getpet_name(), is(equalTo(name)));
+		assertThat(pet.getowner_id(), is(equalTo(6)));
+	}
+
+	@Test
+	public void testEqualsObject() {
+		final Pet petA = new Pet(1, "Name A", 2);
+		final Pet petB = new Pet(1, "Name B", 2);
+		
+		assertTrue(petB.equals(petA));
+	}
+
+//Error: cannot define class using reflection, downgradear java
+	@Test
+	public void testEqualsHashcode() {
+		EqualsVerifier.forClass(Pet.class)
+			.withIgnoredFields("pet_name", "owner_id")
+			.suppress(Warning.STRICT_INHERITANCE)
+			.suppress(Warning.NONFINAL_FIELDS)
+		.verify();
+	}
+}

src/test/java/es/uvigo/esei/daa/matchers/IsEqualToPet.java

+package es.uvigo.esei.daa.matchers;
+
+import org.hamcrest.Factory;
+import org.hamcrest.Matcher;
+
+import es.uvigo.esei.daa.entities.Pet;
+
+public class IsEqualToPet extends IsEqualToEntity<Pet> {
+	public IsEqualToPet(Pet entity) {
+		super(entity);
+	}
+
+	@Override
+	protected boolean matchesSafely(Pet actual) {
+		this.clearDescribeTo();
+		
+		if (actual == null) {
+			this.addTemplatedDescription("actual", expected.toString());
+			return false;
+		} else {
+			return checkAttribute("id", Pet::getId, actual)
+				&& checkAttribute("pet_name", Pet::getpet_name, actual)
+				&& checkAttribute("owner_id", Pet::getowner_id, actual);
+		}
+	}
+
+	/**
+	 * Factory method that creates a new {@link IsEqualToEntity} matcher with
+	 * the provided {@link Pet} as the expected value.
+	 * 
+	 * @param pet the expected pet
+	 * @return a new {@link IsEqualToEntity} matcher with the provided
+	 * {@link Pet} as the expected value.
+	 */
+	@Factory
+	public static IsEqualToPet equalsToPet(Pet pet) {
+		return new IsEqualToPet(pet);
+	}
+	
+	/**
+	 * Factory method that returns a new {@link Matcher} that includes several
+	 * {@link IsEqualToPet} matchers, each one using an {@link Pet} of the
+	 * provided ones as the expected value.
+	 * 
+	 * @param pets the pets to be used as the expected values.
+	 * @return a new {@link Matcher} that includes several
+	 * {@link IsEqualToPet} matchers, each one using an {@link Pet} of the
+	 * provided ones as the expected value.
+	 * @see IsEqualToEntity#containsEntityInAnyOrder(java.util.function.Function, Object...)
+	 */
+	@Factory
+	public static Matcher<Iterable<? extends Pet>> containsPetsInAnyOrder(Pet ... pets) {
+		return containsEntityInAnyOrder(IsEqualToPet::equalsToPet, pets);
+	}
+}
+

src/test/java/es/uvigo/esei/daa/suites/IntegrationTestSuite.java

@@ -5,11 +5,13 @@ import org.junit.runners.Suite;
 import org.junit.runners.Suite.SuiteClasses;
 
 import es.uvigo.esei.daa.rest.PeopleResourceTest;
+import es.uvigo.esei.daa.rest.PetsResourceTest;
 import es.uvigo.esei.daa.rest.UsersResourceTest;
 
 @SuiteClasses({ 
 	PeopleResourceTest.class,
-	UsersResourceTest.class
+	UsersResourceTest.class,
+	PetsResourceTest.class
 })
 @RunWith(Suite.class)
 public class IntegrationTestSuite {

src/test/java/es/uvigo/esei/daa/suites/UnitTestSuite.java

@@ -5,9 +5,11 @@ import org.junit.runners.Suite;
 import org.junit.runners.Suite.SuiteClasses;
 
 import es.uvigo.esei.daa.entities.PersonUnitTest;
+import es.uvigo.esei.daa.entities.PetsUnitTest;
 
 @SuiteClasses({
-	PersonUnitTest.class
+	PersonUnitTest.class,
+	PetsUnitTest.class
 })
 @RunWith(Suite.class)
 public class UnitTestSuite {

src/test/resources/datasets/dataset-add.xml

@@ -16,4 +16,12 @@
 
 	<users login="admin" password="713bfda78870bf9d1b261f565286f85e97ee614efe5f0faf7c34e7ca4f65baca" role="ADMIN"/>
 	<users login="normal" password="7bf24d6ca2242430343ab7e3efb89559a47784eea1123be989c1b2fb2ef66e83" role="USER" />
+	
+	<pets id="1" pet_name="Tofe" owner_id="2"/>
+	<pets id="2" pet_name="Niki" owner_id="3"/>
+	<pets id="3" pet_name="Tobi" owner_id="1"/>
+	<pets id="4" pet_name="Tara" owner_id="2"/>
+	<pets id="5" pet_name="Tim" owner_id="5"/>
+	<pets id="6" pet_name="Trosky" owner_id="6"/>
+	
 </dataset>
\ No newline at end of file

src/test/resources/datasets/dataset-delete.xml

@@ -14,4 +14,12 @@
 
 	<users login="admin" password="713bfda78870bf9d1b261f565286f85e97ee614efe5f0faf7c34e7ca4f65baca" role="ADMIN"/>
 	<users login="normal" password="7bf24d6ca2242430343ab7e3efb89559a47784eea1123be989c1b2fb2ef66e83" role="USER" />
+	
+	<pets id="1" pet_name="Tofe" owner_id="2"/>
+	<pets id="2" pet_name="Niki" owner_id="3"/>
+	<pets id="3" pet_name="Tobi" owner_id="1"/>
+	<pets id="4" pet_name="Tara" owner_id="2"/>
+	<pets id="5" pet_name="Tim" owner_id="5"/>
+	<pets id="6" pet_name="Trosky" owner_id="6"/>
+	
 </dataset>
\ No newline at end of file

src/test/resources/datasets/dataset-modify.xml

@@ -15,4 +15,11 @@
 
 	<users login="admin" password="713bfda78870bf9d1b261f565286f85e97ee614efe5f0faf7c34e7ca4f65baca" role="ADMIN"/>
 	<users login="normal" password="7bf24d6ca2242430343ab7e3efb89559a47784eea1123be989c1b2fb2ef66e83" role="USER" />
+	
+	<pets id="1" pet_name="Tofe" owner_id="2"/>
+	<pets id="2" pet_name="Niki" owner_id="3"/>
+	<pets id="3" pet_name="Tobi" owner_id="1"/>
+	<pets id="4" pet_name="Tara" owner_id="2"/>
+	<pets id="5" pet_name="Tim" owner_id="5"/>
+	<pets id="6" pet_name="Trosky" owner_id="6"/>
 </dataset>
\ No newline at end of file

src/test/resources/datasets/dataset-pets-add.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE dataset SYSTEM "dataset.dtd">
+
+<dataset>
+	<people id="1" name="Antón" surname="Álvarez" />
+	<people id="2" name="Ana" surname="Amargo" />
+	<people id="3" name="Manuel" surname="Martínez" />
+	<people id="4" name="María" surname="Márquez" />
+	<people id="5" name="Lorenzo" surname="López" />
+	<people id="6" name="Laura" surname="Laredo" />
+	<people id="7" name="Perico" surname="Palotes" />
+	<people id="8" name="Patricia" surname="Pérez" />
+	<people id="9" name="Julia" surname="Justa" />
+	<people id="10" name="Juan" surname="Jiménez" />
+
+	<users login="admin" password="713bfda78870bf9d1b261f565286f85e97ee614efe5f0faf7c34e7ca4f65baca" role="ADMIN"/>
+	<users login="normal" password="7bf24d6ca2242430343ab7e3efb89559a47784eea1123be989c1b2fb2ef66e83" role="USER" />
+	
+	<pets id="1" pet_name="Tofe" owner_id="2"/>
+	<pets id="2" pet_name="Niki" owner_id="3"/>
+	<pets id="3" pet_name="Tobi" owner_id="1"/>
+	<pets id="4" pet_name="Tara" owner_id="2"/>
+	<pets id="5" pet_name="Tim" owner_id="5"/>
+	<pets id="6" pet_name="Trosky" owner_id="6"/>
+	<pets id="7" pet_name="Miku" owner_id="4"/>
+	
+</dataset>
\ No newline at end of file

src/test/resources/datasets/dataset-pets-delete.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE dataset SYSTEM "dataset.dtd">
+
+<dataset>
+	<people id="1" name="Antón" surname="Álvarez" />
+	<people id="2" name="Ana" surname="Amargo" />
+	<people id="3" name="Manuel" surname="Martínez" />
+	<people id="4" name="María" surname="Márquez" />
+	<people id="5" name="Lorenzo" surname="López" />
+	<people id="6" name="Laura" surname="Laredo" />
+	<people id="7" name="Perico" surname="Palotes" />
+	<people id="8" name="Patricia" surname="Pérez" />
+	<people id="9" name="Julia" surname="Justa" />
+	<people id="10" name="Juan" surname="Jiménez" />
+
+	<users login="admin" password="713bfda78870bf9d1b261f565286f85e97ee614efe5f0faf7c34e7ca4f65baca" role="ADMIN"/>
+	<users login="normal" password="7bf24d6ca2242430343ab7e3efb89559a47784eea1123be989c1b2fb2ef66e83" role="USER" />
+	
+	<pets id="1" pet_name="Tofe" owner_id="2"/>
+	<pets id="2" pet_name="Niki" owner_id="3"/>
+	<pets id="3" pet_name="Tobi" owner_id="1"/>
+	<pets id="4" pet_name="Tara" owner_id="2"/>
+	<pets id="6" pet_name="Trosky" owner_id="6"/>
+	
+</dataset>
\ No newline at end of file

src/test/resources/datasets/dataset-pets-modify.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE dataset SYSTEM "dataset.dtd">
+
+<dataset>
+	<people id="1" name="Antón" surname="Álvarez" />
+	<people id="2" name="Ana" surname="Amargo" />
+	<people id="3" name="Manuel" surname="Martínez" />
+	<people id="4" name="María" surname="Márquez" />
+	<people id="5" name="Lorenzo" surname="López" />
+	<people id="6" name="Laura" surname="Laredo" />
+	<people id="7" name="Perico" surname="Palotes" />
+	<people id="8" name="Patricia" surname="Pérez" />
+	<people id="9" name="Julia" surname="Justa" />
+	<people id="10" name="Juan" surname="Jiménez" />
+
+	<users login="admin" password="713bfda78870bf9d1b261f565286f85e97ee614efe5f0faf7c34e7ca4f65baca" role="ADMIN"/>
+	<users login="normal" password="7bf24d6ca2242430343ab7e3efb89559a47784eea1123be989c1b2fb2ef66e83" role="USER" />
+	
+	<pets id="1" pet_name="Tofe" owner_id="2"/>
+	<pets id="2" pet_name="Niki" owner_id="3"/>
+	<pets id="3" pet_name="Tobi" owner_id="1"/>
+	<pets id="4" pet_name="Tara" owner_id="2"/>
+	<pets id="5" pet_name="Miku" owner_id="4"/>
+	<pets id="6" pet_name="Trosky" owner_id="6"/>
+	
+</dataset>
\ No newline at end of file

src/test/resources/datasets/dataset.dtd

 <?xml version="1.0" encoding="UTF-8"?>
-<!ELEMENT dataset (people*, users*)>
+<!ELEMENT dataset (people*, users*, pets*)>
 <!ELEMENT people EMPTY>
 <!ELEMENT users EMPTY>
+<!ELEMENT pets EMPTY>
 <!ATTLIST people
     id CDATA #IMPLIED
     name CDATA #IMPLIED
@@ -12,3 +13,8 @@
     password CDATA #IMPLIED
     role CDATA #IMPLIED
 >
+<!ATTLIST pets
+	id CDATA #IMPLIED
+	pet_name CDATA #IMPLIED
+	owner_id CDATA #IMPLIED
+>
\ No newline at end of file

src/test/resources/datasets/dataset.xml

@@ -15,4 +15,12 @@
 
 	<users login="admin" password="713bfda78870bf9d1b261f565286f85e97ee614efe5f0faf7c34e7ca4f65baca" role="ADMIN"/>
 	<users login="normal" password="7bf24d6ca2242430343ab7e3efb89559a47784eea1123be989c1b2fb2ef66e83" role="USER" />
+	
+	<pets id="1" pet_name="Tofe" owner_id="2"/>
+	<pets id="2" pet_name="Niki" owner_id="3"/>
+	<pets id="3" pet_name="Tobi" owner_id="1"/>
+	<pets id="4" pet_name="Tara" owner_id="2"/>
+	<pets id="5" pet_name="Tim" owner_id="5"/>
+	<pets id="6" pet_name="Trosky" owner_id="6"/>
+	
 </dataset>
\ No newline at end of file

src/test/resources/db/hsqldb-drop.sql

 DROP TABLE People IF EXISTS;
 DROP TABLE Users IF EXISTS;
+DROP TABLE Pets IF EXISTS;

src/test/resources/db/hsqldb.sql

@@ -11,3 +11,9 @@ CREATE TABLE users (
 	role VARCHAR(5) NOT NULL,
 	PRIMARY KEY (login)
 );
+
+CREATE TABLE pets (
+	id INTEGER GENERATED BY DEFAULT AS IDENTITY (START WITH 1, INCREMENT BY 1) NOT NULL,
+	pet_name VARCHAR(50) NOT NULL,
+	owner_id INT NOT NULL
+);