Added CRUD to Products and added Validation to dialog

src/main/java/org/example/petshopdesktop/DTOs/ProductDTO.java

@@ -11,17 +11,15 @@ import org.example.petshopdesktop.models.Product;
 public class ProductDTO {
     private SimpleIntegerProperty prodId;
     private SimpleStringProperty prodName;
-    private SimpleStringProperty prodSku;
     private SimpleDoubleProperty prodPrice;
     private SimpleIntegerProperty categoryId; //used for edit and delete
     private SimpleStringProperty categoryName;
     private SimpleStringProperty prodDesc;
 
     //constructor
-    public ProductDTO(int prodId, String prodName, String prodSku, double prodPrice, int categoryId, String categoryName, String prodDesc) {
+    public ProductDTO(int prodId, String prodName, double prodPrice, int categoryId, String categoryName, String prodDesc) {
         this.prodId = new SimpleIntegerProperty(prodId);
         this.prodName = new SimpleStringProperty(prodName);
-        this.prodSku = new SimpleStringProperty(prodSku);
         this.prodPrice = new SimpleDoubleProperty(prodPrice);
         this.categoryId = new SimpleIntegerProperty(categoryId);
         this.categoryName = new SimpleStringProperty(categoryName);
@@ -53,18 +51,6 @@ public class ProductDTO {
         this.prodName.set(prodName);
     }
 
-    public String getProdSku() {
-        return prodSku.get();
-    }
-
-    public SimpleStringProperty prodSkuProperty() {
-        return prodSku;
-    }
-
-    public void setProdSku(String prodSku) {
-        this.prodSku.set(prodSku);
-    }
-
     public double getProdPrice() {
         return prodPrice.get();
     }
@@ -121,7 +107,6 @@ public class ProductDTO {
         Product product = new Product(
                 getProdId(),
                 getProdName(),
-                getProdSku(),
                 getProdPrice(),
                 getCategoryId(),
                 getProdDesc()

src/main/java/org/example/petshopdesktop/Validator.java

@@ -0,0 +1,131 @@
+package org.example.petshopdesktop;
+
+public class Validator {
+
+    /**
+     * Checks if string is not empty
+     * @param value string to check
+     * @param name name of the input
+     * @return error msg if string is not empty, otherwise empty
+     */
+    public static String isPresent(String value, String name){
+        String msg =""; //OK so far
+        if(value.isEmpty() || name.isBlank()){
+            msg += name + " is required. \n";
+        }
+        return msg;
+    }
+
+    /**
+     * Checks if the input is a non-negative double
+     * @param value input of string
+     * @param name name of input
+     * @return error msg if input is not a number or negative, otherwise empty
+     */
+    public static String isNonNegativeDouble(String value, String name){
+        String msg =""; //OK so far
+        double result;
+        try{
+            result = Double.parseDouble(value);
+            if (result < 0){
+                msg += name + " must be greater than or equal 0. \n";
+            }
+        }
+        catch (NumberFormatException e){
+            msg += name + " must be a number.\n";
+        }
+        return msg;
+    }
+
+    /**
+     * Checks if the input is a double in 2 different range
+     * @param value input of string
+     * @param name name of inpt
+     * @param minValue min value of range
+     * @param maxValue max value of range
+     * @return error msg if input is out of range, otherwise empty
+     */
+    public static String isDoubleInRange(String value, String name, double minValue, double maxValue){
+        String msg =""; //OK so far
+        double result;
+        try{
+            result = Double.parseDouble(value);
+            if (result < minValue || result > maxValue){
+                msg += name + " must be between " + minValue + " and " + maxValue + "\n";
+            }
+        }
+        catch (NumberFormatException e){
+            msg += name + " must be a number.\n";
+        }
+        return msg;
+    }
+
+    /**
+     * Checks if the input is a non-negative integer
+     * @param value input of string
+     * @param name name of input
+     * @return error msg if input is not a number or negative, otherwise empty
+     */
+    public static String isNonNegativeInteger(String value, String name){
+        String msg =""; //OK so far
+        int result;
+        try{
+            result = Integer.parseInt(value);
+            if (result < 0){
+                msg += name + " must be greater than or equal 0. \n";
+            }
+        }
+        catch (NumberFormatException e){
+            msg += name + " must be a whole number.\n";
+        }
+        return msg;
+    }
+
+    /**
+     * check if the string is a given amount of characters or fewer
+     * @param value input of string
+     * @param name name of input
+     * @return error msg if input is more than given characters length
+     */
+    public static String isLessThanVarChars(String value, String name, int length){
+        String msg ="";
+        if (value.length() > length){
+            msg += name + " must be less than " + length + " characters. \n";
+        }
+        return msg;
+    }
+
+    /**
+     * Checks if the input is a valid email format
+     * @param value input of string
+     * @param name name of input
+     * @return error msg if input is not a valid email format, otherwise empty
+     */
+    public static String isValidEmail(String value, String name){
+        String msg = ""; //OK so far
+        // Email regex
+        String regex = "^[A-Za-z0-9+_.-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,}$";
+
+        if (!value.matches(regex)){
+            msg += name + " is not in a valid format. \n";
+        }
+        return msg;
+    }
+
+    /**
+     * Checks if the input is a valid phone number in format XXX-XXX-XXXX
+     * @param value input of string
+     * @param name name of input
+     * @return error msg if input is not in valid phone format, otherwise empty
+     */
+    public static String isValidPhoneNumber(String value, String name){
+        String msg = ""; //OK so far
+        // Phone regex
+        String regex = "^\\d{3}-\\d{3}-\\d{4}$";
+
+        if (!value.matches(regex)){
+            msg += name + " must be in format XXX-XXX-XXXX. \n";
+        }
+        return msg;
+    }
+}

src/main/java/org/example/petshopdesktop/controllers/ProductController.java

@@ -4,16 +4,24 @@ import javafx.collections.FXCollections;
 import javafx.collections.ObservableList;
 import javafx.event.ActionEvent;
 import javafx.fxml.FXML;
-import javafx.scene.control.Button;
-import javafx.scene.control.TableColumn;
-import javafx.scene.control.TableView;
-import javafx.scene.control.TextField;
+import javafx.fxml.FXMLLoader;
+import javafx.scene.Scene;
+import javafx.scene.control.*;
 import javafx.scene.control.cell.PropertyValueFactory;
+import javafx.stage.Modality;
+import javafx.stage.Stage;
 import org.example.petshopdesktop.DTOs.ProductDTO;
+import org.example.petshopdesktop.controllers.dialogcontrollers.ProductDialogController;
+import org.example.petshopdesktop.controllers.dialogcontrollers.SupplierDialogController;
 import org.example.petshopdesktop.database.ProductDB;
+import org.example.petshopdesktop.database.SupplierDB;
 import org.example.petshopdesktop.models.Product;
+import org.example.petshopdesktop.models.Supplier;
 
+import java.io.IOException;
 import java.sql.SQLException;
+import java.sql.SQLIntegrityConstraintViolationException;
+import java.util.Optional;
 
 /**
  * The controller for any operations in the products view
@@ -44,9 +52,6 @@ public class ProductController {
     @FXML
     private TableColumn<ProductDTO, Double> colProductPrice;
 
-    @FXML
-    private TableColumn<ProductDTO, String> colProductSKU;
-
     @FXML
     private TableView<ProductDTO> tvProducts;
 
@@ -68,19 +73,31 @@ public class ProductController {
         //set up table columns
         colProductId.setCellValueFactory(new PropertyValueFactory<ProductDTO,Integer>("prodId"));
         colProductName.setCellValueFactory(new PropertyValueFactory<ProductDTO,String>("prodName"));
-        colProductSKU.setCellValueFactory(new PropertyValueFactory<ProductDTO,String>("prodSku"));
         colProductPrice.setCellValueFactory(new PropertyValueFactory<ProductDTO,Double>("prodPrice"));
         colProductCategory.setCellValueFactory(new PropertyValueFactory<ProductDTO,String>("categoryName"));
         colProductDesc.setCellValueFactory(new PropertyValueFactory<ProductDTO,String>("prodDesc"));
 
-        displayProducts();
+        displayProduct();
+
+        //EventListener to Enable buttons when a row is selected
+        tvProducts.getSelectionModel().selectedItemProperty().addListener(
+                (observable, oldValue, newValue) -> {
+                    btnEdit.setDisable(false);
+                    btnDelete.setDisable(false);
+                }
+        );
+
+        //EventListener to search when text is changed on searchbar
+        txtSearch.textProperty().addListener((observable, oldValue, newValue) -> {
+            displayFilteredProduct(newValue);
+        });
 
     }
 
     /**
      * Display the productDTO to table view
      */
-    private void displayProducts(){
+    private void displayProduct(){
         //Erase old content
         data.clear();
 
@@ -95,20 +112,148 @@ public class ProductController {
         tvProducts.setItems(data);
     }
 
-
+    /**
+     * open a new dialog for adding a product
+     * @param event
+     */
     @FXML
     void btnAddClicked(ActionEvent event) {
-
+        mode = "Add";
+        openDialog(null,mode);
     }
 
+    /**
+     * Delete a selected product when delete is clicked
+     * @param event click event for button
+     */
     @FXML
     void btnDeleteClicked(ActionEvent event) {
+        int numRows = 0;
+        //set selected product
+        ProductDTO selectedProduct = tvProducts.getSelectionModel().getSelectedItem();
 
+        //ask user to confirm
+        Alert question = new Alert(Alert.AlertType.CONFIRMATION);
+        question.setHeaderText("Please confirm delete");
+        question.setContentText("Are you sure you want to delete this product?");
+        Optional<ButtonType> result = question.showAndWait(); //show alert and wait for response
+
+        //if confirmed,start deletion
+        if (result.isPresent() && result.get() == ButtonType.OK) {
+            int prodId = selectedProduct.getProdId();
+
+            //try deleting
+            try{
+                numRows = ProductDB.deleteProduct(prodId);
+            }
+            catch (SQLIntegrityConstraintViolationException e){
+                Alert alert = new Alert(Alert.AlertType.ERROR);
+                alert.setHeaderText("Database Operation Error");
+                alert.setContentText("Delete failed\n" +
+                        "the selected product is being referred in another table");
+                alert.showAndWait();
+                return;
+            }
+            catch (SQLException e) {
+                throw new RuntimeException(e);
+            }
+
+            //prompt user of any errors
+            if (numRows == 0){
+                Alert alert = new Alert(Alert.AlertType.ERROR);
+                alert.setHeaderText("Database Operation Error");
+                alert.setContentText("Delete failed");
+                alert.showAndWait();
+            }
+            else{
+                //prompt user of delete conformation
+                Alert alert = new Alert(Alert.AlertType.CONFIRMATION);
+                alert.setHeaderText("Database Operation Confirmed");
+                alert.setContentText("Delete successful");
+                alert.showAndWait();
+                //refresh display and reset inputs
+                displayProduct();
+                btnDelete.setDisable(true);
+                btnEdit.setDisable(true);
+                txtSearch.setText("");
+            }
+        }
     }
 
+    /**
+     * Open a new dialog for editing a product
+     * @param event click event for button
+     */
     @FXML
     void btnEditClicked(ActionEvent event) {
+        //set selected product
+        ProductDTO selectedProduct = tvProducts.getSelectionModel().getSelectedItem();
 
+        if (selectedProduct != null) {
+            mode = "Edit";
+            openDialog(selectedProduct, mode);
+        }
+    }
+
+    /**
+     * Filter the table given the string from the searchbar
+     * @param filter word to filter table
+     */
+    private void displayFilteredProduct(String filter){
+        data.clear();
+        try{
+            if (txtSearch.getText() == null || txtSearch.getText().isEmpty()){
+                displayProduct(); //If search bar is empty just display everything
+            }
+            else{
+                //Filter the using the keyword
+                data = ProductDB.getFilteredProductDTOs(filter);
+                tvProducts.setItems(data);
+            }
+        } catch (Exception e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    /**
+     * Function to open the new Dialog for edit or adding
+     * depending on the mode given
+     * @param product the product entity for editing, null if adding
+     * @param mode the mode the dialog should be in
+     */
+    private void openDialog(ProductDTO product, String mode){
+        //Get new view
+        FXMLLoader fxmlLoader = new FXMLLoader(getClass().getResource("/org/example/petshopdesktop/dialogviews/product-dialog-view.fxml"));
+        Scene scene = null;
+        try{
+            scene = new Scene(fxmlLoader.load());
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+        ProductDialogController dialogController = fxmlLoader.getController(); //controller associated with this view
+        dialogController.setMode(mode);
+
+        //Open the dialog depending on the mode
+        if(mode.equals("Edit")){
+            //Make it display suppliers details in dialog
+            dialogController.displayProductDetails(product);
+        }
+        Stage dialogStage = new Stage();
+        dialogStage.initModality(Modality.APPLICATION_MODAL); //make it modal
+        if(mode.equals("Add")){
+            dialogStage.setTitle("Add Product");
+        }
+        else {
+            dialogStage.setTitle("Edit Product");
+        }
+        dialogStage.setScene(scene);
+        dialogStage.showAndWait();
+
+        //When dialog closes update table view and disable edit and delete buttons, and reset search bar
+        displayProduct();
+        btnDelete.setDisable(true);
+        btnEdit.setDisable(true);
+        txtSearch.setText("");
     }
 
 }

src/main/java/org/example/petshopdesktop/controllers/SupplierController.java

@@ -74,7 +74,7 @@ public class SupplierController {
 
         displaySupplier();
 
-        // Enable buttons when a row is selected
+        //EventListener to Enable buttons when a row is selected
         tvSuppliers.getSelectionModel().selectedItemProperty().addListener(
                 (observable, oldValue, newValue) -> {
                     btnEdit.setDisable(false);
@@ -82,6 +82,11 @@ public class SupplierController {
                 }
         );
 
+        //EventListener to search when text is changed on searchbar
+        txtSearch.textProperty().addListener((observable, oldValue, newValue) -> {
+            displayFilteredSupplier(newValue);
+        });
+
 
     }
 
@@ -100,10 +105,30 @@ public class SupplierController {
         tvSuppliers.setItems(data);
     }
 
+    /**
+     * Filter the table given the string from the searchbar
+     * @param filter word to filter table
+     */
+    private void displayFilteredSupplier(String filter){
+        data.clear();
+        try{
+            if (txtSearch.getText() == null || txtSearch.getText().isEmpty()){
+                displaySupplier(); //If search bar is empty just display everything
+            }
+            else{
+                //Filter the using the keyword
+                data = SupplierDB.getFilteredSuppliers(filter);
+                tvSuppliers.setItems(data);
+            }
+        } catch (Exception e) {
+            throw new RuntimeException(e);
+        }
+    }
+
 
     /**
      * open a new dialog for adding a supplier
-     * @param event
+     * @param event click event for button
      */
     @FXML
     void btnAddClicked(ActionEvent event) {
@@ -112,8 +137,8 @@ public class SupplierController {
     }
 
     /**
-     *
-     * @param event
+     * Delete a selected supplier when delete is clicked
+     * @param event click event for button
      */
     @FXML
     void btnDeleteClicked(ActionEvent event) {
@@ -162,13 +187,16 @@ public class SupplierController {
                 alert.showAndWait();
                 //refresh display
                 displaySupplier();
+                btnDelete.setDisable(true);
+                btnEdit.setDisable(true);
+                txtSearch.setText("");
             }
         }
     }
 
     /**
      * Open a new dialog for editing a supplier
-     * @param event click event
+     * @param event click event for button
      */
     @FXML
     void btnEditClicked(ActionEvent event) {
@@ -184,12 +212,12 @@ public class SupplierController {
     /**
      * Function to open the new Dialog for edit or adding
      * depending on the mode given
-     * @param supplier the supplier entity fo editing, null if adding
+     * @param supplier the supplier entity for editing, null if adding
      * @param mode the mode the dialog should be in
      */
     private void openDialog(Supplier supplier, String mode){
         //Get new view
-        FXMLLoader fxmlLoader = new FXMLLoader(getClass().getResource("/org/example/petshopdesktop/dialogviews/supplier-dialog-view.fxml")); //CHECK
+        FXMLLoader fxmlLoader = new FXMLLoader(getClass().getResource("/org/example/petshopdesktop/dialogviews/supplier-dialog-view.fxml"));
         Scene scene = null;
         try{
             scene = new Scene(fxmlLoader.load());
@@ -215,10 +243,11 @@ public class SupplierController {
         dialogStage.setScene(scene);
         dialogStage.showAndWait();
 
-        //When dialog closes update table view and disable edit and delete buttons
+        //When dialog closes update table view and disable edit and delete buttons, and reset search bar
         displaySupplier();
         btnDelete.setDisable(true);
         btnEdit.setDisable(true);
+        txtSearch.setText("");
     }
 
-}
+}

src/main/java/org/example/petshopdesktop/controllers/dialogcontrollers/ProductDialogController.java

@@ -0,0 +1,211 @@
+package org.example.petshopdesktop.controllers.dialogcontrollers;
+
+import javafx.collections.FXCollections;
+import javafx.collections.ObservableList;
+import javafx.event.EventHandler;
+import javafx.fxml.FXML;
+import javafx.scene.Node;
+import javafx.scene.control.*;
+import javafx.scene.input.MouseEvent;
+import javafx.stage.Stage;
+import org.example.petshopdesktop.DTOs.ProductDTO;
+import org.example.petshopdesktop.Validator;
+import org.example.petshopdesktop.database.CategoryDB;
+import org.example.petshopdesktop.database.ProductDB;
+import org.example.petshopdesktop.models.Category;
+import org.example.petshopdesktop.models.Product;
+import org.example.petshopdesktop.models.Supplier;
+
+import java.sql.SQLException;
+import java.util.ArrayList;
+
+public class ProductDialogController {
+
+    @FXML
+    private Button btnCancel;
+
+    @FXML
+    private Button btnSave;
+
+    @FXML
+    private ComboBox<Category> cbProdCategory;
+
+    @FXML
+    private Label lblMode;
+
+    @FXML
+    private Label lblProdId;
+
+    @FXML
+    private TextField txtProdDesc;
+
+    @FXML
+    private TextField txtProdName;
+
+    @FXML
+    private TextField txtProdPrice;
+
+    private String mode = null;
+
+    /**
+     * Add event listeners to buttons when dialog loads
+     */
+    @FXML
+    void initialize() {
+        //Set up mouse handlers for buttons
+        btnSave.setOnMouseClicked(new EventHandler<MouseEvent>() {
+            @Override
+            public void handle(MouseEvent mouseEvent) {
+                buttonSaveClicked(mouseEvent);
+            }
+        });
+
+        btnCancel.setOnMouseClicked(new EventHandler<MouseEvent>() {
+            @Override
+            public void handle(MouseEvent mouseEvent) {
+                closeStage(mouseEvent);
+            }
+        });
+
+        //Set up combobox for selecting category
+        try {
+            //set up combobox
+            ObservableList<Category> categories = FXCollections.observableArrayList(); //empty list
+            categories = CategoryDB.getCategories();
+            cbProdCategory.setItems(categories);
+        } catch (SQLException e) {
+            throw new RuntimeException(e);
+        }
+
+    }
+
+    private void buttonSaveClicked(MouseEvent mouseEvent) {
+        int numRow = 0; //how many rows affected
+        String errorMsg = ""; //error message for validation
+
+        //Check Validation (input required)
+        errorMsg += Validator.isPresent(txtProdName.getText(), "Product Name");
+        errorMsg += Validator.isPresent(txtProdPrice.getText(), "Product Price");
+        if (cbProdCategory.getSelectionModel().getSelectedItem() == null) {
+            errorMsg += "Category is required \n";
+        }
+
+        //Check validation (length size)
+        errorMsg += Validator.isLessThanVarChars(txtProdName.getText(), "Product Name", 100);
+        errorMsg += Validator.isLessThanVarChars(txtProdDesc.getText(), "Description", 100);
+        errorMsg += Validator.isLessThanVarChars(txtProdPrice.getText(), "Product Price", 12);
+
+        //Check Validation (format)
+        errorMsg += Validator.isNonNegativeDouble(txtProdPrice.getText(), "Product Price");
+
+        if (errorMsg.isEmpty()) { //no validation errors detected
+            Product product = collectProduct(); //get product info
+            if (mode.equals("Add")){ //add mode
+                try{
+                    numRow = ProductDB.insertProduct(product);
+                } catch (SQLException e) {
+                    throw new RuntimeException(e);
+                }
+            }
+            else { //edit
+                try{
+                    numRow = ProductDB.updateProduct(product.getProdId(),product);
+                } catch (SQLException e) {
+                    throw new RuntimeException(e);
+                }
+            }
+
+            //if no rows were affected then there was an error (prompt user of error)
+            if (numRow == 0){
+                Alert alert = new Alert(Alert.AlertType.ERROR);
+                alert.setHeaderText("Database Operation Error");
+                alert.setContentText(mode + " failed");
+                alert.showAndWait();
+                closeStage(mouseEvent);
+            }
+            else {
+                //tell the user operation was successful
+                Alert alert = new Alert(Alert.AlertType.CONFIRMATION);
+                alert.setHeaderText("Database Operation Confirmed");
+                alert.setContentText(mode + " succeeded");
+                alert.showAndWait();
+                closeStage(mouseEvent);
+            }
+        }
+        else{ //Display validation errors
+            Alert alert = new Alert(Alert.AlertType.ERROR);
+            alert.setHeaderText("Input Error");
+            alert.setContentText(errorMsg);
+            alert.showAndWait();
+        }
+    }
+
+    /**
+     * Collect the product info
+     * @return product info with the id or the new product
+     */
+    private Product collectProduct(){
+        int prodId = 0;
+        Product product = null;
+
+        if(lblProdId.isVisible()){ //Edit mode
+            //get product id from lblId (split the string so we only get the int)
+            prodId = Integer.parseInt(lblProdId.getText().split(": ")[1]);
+        }
+        product = new Product(
+                prodId,
+                txtProdName.getText(),
+                Double.parseDouble(txtProdPrice.getText()),
+                cbProdCategory.getSelectionModel().getSelectedItem().getCategoryId(),
+                txtProdDesc.getText()
+        );
+        return product;
+    }
+
+    /**
+     * Display the product data in text fields and combobox
+     * @param product the supplier entity containing data to display
+     */
+    public void displayProductDetails(ProductDTO product){
+        if (product!=null){
+            lblProdId.setText("ID: " + product.getProdId());
+            txtProdName.setText(product.getProdName());
+            txtProdDesc.setText(product.getProdDesc());
+            txtProdPrice.setText(product.getProdPrice() + "");
+
+            //get the right combobox selection
+            for (Category category : cbProdCategory.getItems()) {
+                if(category.getCategoryId() == product.getCategoryId()){
+                    cbProdCategory.setValue(category);
+                }
+            }
+
+        }
+    }
+
+    /**
+     * Close the window
+     * @param mouseEvent mouse event to close
+     */
+    private void closeStage(MouseEvent mouseEvent) {
+        Node node = (Node) mouseEvent.getSource();
+        Stage stage = (Stage) node.getScene().getWindow();
+        stage.close();
+    }
+
+    /**
+     * Set the mode of the dialog
+     * @param mode the mode to for the dialog
+     */
+    public void setMode(String mode) {
+        this.mode = mode;
+        lblMode.setText(mode + " Product");
+        if(mode.equals("Add")) {
+            lblProdId.setVisible(false);
+        }
+        else if(mode.equals("Edit")) {
+            lblProdId.setVisible(true);
+        }
+    }
+
+}

src/main/java/org/example/petshopdesktop/controllers/dialogcontrollers/SupplierDialogController.java

@@ -9,6 +9,7 @@ import javafx.scene.control.Label;
 import javafx.scene.control.TextField;
 import javafx.scene.input.MouseEvent;
 import javafx.stage.Stage;
+import org.example.petshopdesktop.Validator;
 import org.example.petshopdesktop.database.SupplierDB;
 import org.example.petshopdesktop.models.Supplier;
 
@@ -45,6 +46,9 @@ public class SupplierDialogController {
 
     private String mode = null;
 
+    /**
+     * Add event listeners to buttons when dialog loads
+     */
     @FXML
     void initialize() {
         //Set up mouse handlers for buttons
@@ -67,7 +71,22 @@ public class SupplierDialogController {
         int numRow = 0; //how many rows affected
         String errorMsg = ""; //error message for validation
 
-        //TODO: Import validation class and validate text fields here
+        //Check validation (input required)
+        errorMsg += Validator.isPresent(txtCompanyName.getText(), "Company Name");
+        errorMsg += Validator.isPresent(txtContactFirstName.getText(), "Contact First Name");
+        errorMsg += Validator.isPresent(txtContactLastName.getText(), "Contact Last Name");
+        errorMsg += Validator.isPresent(txtEmail.getText(), "Email Address");
+        errorMsg += Validator.isPresent(txtPhone.getText(), "Phone Number");
+
+        //Check validation (Length size)
+        errorMsg += Validator.isLessThanVarChars(txtCompanyName.getText(),"Company Name", 100);
+        errorMsg += Validator.isLessThanVarChars(txtContactFirstName.getText(), "Contact First Name", 50);
+        errorMsg += Validator.isLessThanVarChars(txtContactLastName.getText(), "Contact Last Name", 50);
+        errorMsg += Validator.isLessThanVarChars(txtEmail.getText(), "Email Address", 100);
+
+        //Check validation (format)
+        errorMsg += Validator.isValidEmail(txtEmail.getText(), "Email Address");
+        errorMsg += Validator.isValidPhoneNumber(txtPhone.getText(), "Phone Number");
 
         if(errorMsg.isEmpty()){ //no validation errors detected
             Supplier supplier = collectSupplier(); //get supplier info

src/main/java/org/example/petshopdesktop/database/CategoryDB.java

@@ -0,0 +1,41 @@
+package org.example.petshopdesktop.database;
+
+import javafx.collections.FXCollections;
+import javafx.collections.ObservableList;
+import org.example.petshopdesktop.models.Category;
+import org.example.petshopdesktop.models.Product;
+
+import java.sql.Connection;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.sql.Statement;
+
+public class CategoryDB {
+    /**
+     * gets all the category into an observable list
+     * @return a list of all the category
+     * @throws SQLException if failed to find categories in the database
+     */
+    public static ObservableList<Category> getCategories() throws SQLException{
+        //Connect to the database
+        ObservableList<Category> categories = FXCollections.observableArrayList();
+        Connection conn = ConnectionDB.getConnection();
+
+        //Execute Query
+        Statement stmt = conn.createStatement();
+        ResultSet rs = stmt.executeQuery("SELECT * FROM category");
+
+        //While there is still data add categories to the list
+        while(rs.next()){
+            Category category = new Category(
+                    rs.getInt(1),
+                    rs.getString(2),
+                    rs.getString(3));
+            categories.add(category);
+        }
+
+        //close connection and return categories
+        conn.close();
+        return categories;
+    }
+}

src/main/java/org/example/petshopdesktop/database/ProductDB.java

@@ -4,11 +4,9 @@ import javafx.collections.FXCollections;
 import javafx.collections.ObservableList;
 import org.example.petshopdesktop.DTOs.ProductDTO;
 import org.example.petshopdesktop.models.Product;
+import org.example.petshopdesktop.models.Supplier;
 
-import java.io.FileInputStream;
-import java.io.IOException;
 import java.sql.*;
-import java.util.Properties;
 
 /**
  * A class containing all the methods relating to CRUD on Products table
@@ -34,10 +32,9 @@ public class ProductDB {
             Product product = new Product(
                     rs.getInt(1),
                     rs.getString(2),
-                    rs.getString(3),
-                    rs.getDouble(4),
-                    rs.getInt(5),
-                    rs.getString(6));
+                    rs.getDouble(3),
+                    rs.getInt(4),
+                    rs.getString(5));
             products.add(product);
         }
 
@@ -58,7 +55,7 @@ public class ProductDB {
 
         //Execute Query
         Statement stmt = conn.createStatement();
-        String sql = "SELECT p.prodId, p.prodName, p.prodSku, p.prodPrice, p.categoryId, c.categoryName, p.prodDesc " +
+        String sql = "SELECT p.prodId, p.prodName, p.prodPrice, p.categoryId, c.categoryName, p.prodDesc " +
                 "FROM product p " +
                 "LEFT JOIN category c ON p.categoryId = c.categoryId";
         ResultSet rs = stmt.executeQuery(sql);
@@ -68,11 +65,10 @@ public class ProductDB {
             ProductDTO product = new ProductDTO(
                     rs.getInt(1),
                     rs.getString(2),
-                    rs.getString(3),
-                    rs.getDouble(4),
-                    rs.getInt(5),
-                    rs.getString(6),
-                    rs.getString(7));
+                    rs.getDouble(3),
+                    rs.getInt(4),
+                    rs.getString(5),
+                    rs.getString(6));
             products.add(product);
         }
 
@@ -80,4 +76,137 @@ public class ProductDB {
         conn.close();
         return products;
     }
+
+    /**
+     * Inserts a new product to the database
+     * @param product product entity to be inserted
+     * @return number of rows affected in the database
+     * @throws SQLException if insertion failed
+     */
+    public static int insertProduct(Product product) throws SQLException {
+        int numRows = 0;
+
+        Connection conn = ConnectionDB.getConnection();
+        String sql = "INSERT INTO product (prodId, prodName, prodPrice, categoryId, prodDesc)" +
+                "VALUES (?, ?, ?, ?, ?)";
+
+        //These are the values from product to put into the query above
+        PreparedStatement stmt = conn.prepareStatement(sql);
+        stmt.setInt(1, product.getProdId());
+        stmt.setString(2, product.getProdName());
+        stmt.setDouble(3, product.getProdPrice());
+        stmt.setInt(4, product.getCategoryId());
+        stmt.setString(5, product.getProdDesc());
+
+        //update the number of rows affected, return and close connection
+        numRows = stmt.executeUpdate();
+        conn.close();
+
+        return numRows;
+    }
+
+    /**
+     * Update an existing product to the database
+     * @param prodId id of product
+     * @param product new product data
+     * @return number of rows affected in the database
+     * @throws SQLException if update failed
+     */
+    public static int updateProduct(int prodId, Product product) throws SQLException {
+        int numRows = 0;
+
+        Connection conn = ConnectionDB.getConnection();
+        String sql = "UPDATE product SET " +
+                " prodName = ?, " +
+                " prodPrice = ?, " +
+                " categoryId = ?, " +
+                " prodDesc = ? " +
+                " WHERE prodId = ?";
+
+        //update values to query
+        PreparedStatement stmt = conn.prepareStatement(sql);
+        stmt.setString(1, product.getProdName());
+        stmt.setDouble(2, product.getProdPrice());
+        stmt.setInt(3, product.getCategoryId());
+        stmt.setString(4, product.getProdDesc());
+        stmt.setInt(5, prodId);
+
+        //Update rows and close connection
+        numRows = stmt.executeUpdate();
+        conn.close();
+
+        return numRows;
+    }
+
+    /**
+     * Delete a product from the database
+     * @param prodId product id to be deleted
+     * @return number of rows affected in the database
+     * @throws SQLException if delete failed
+     */
+    public static int deleteProduct(int prodId) throws SQLException {
+        int numRows = 0;
+        Connection conn = ConnectionDB.getConnection();
+
+        String sql = "DELETE FROM product WHERE prodId = ?";
+        PreparedStatement stmt = conn.prepareStatement(sql);
+
+        stmt.setInt(1, prodId);
+
+        //close connection and update rows affected
+        numRows = stmt.executeUpdate();
+        conn.close();
+
+        return numRows;
+    }
+
+    /**
+     * Gets a list of productDTOs that is filtered by a given string
+     * @param filter the word to filter table
+     * @return ObservableList of ProductDTOs with the filtered data
+     * @throws SQLException if getting products failed
+     */
+    public static ObservableList<ProductDTO> getFilteredProductDTOs(String filter) throws SQLException {
+        //Connect to the database
+        ObservableList<ProductDTO> products = FXCollections.observableArrayList();
+        Connection conn = ConnectionDB.getConnection();
+
+        //Get SQL query for filtered word
+        String sql =
+                "SELECT p.prodId, p.prodName, p.prodPrice, p.categoryId, c.categoryName, p.prodDesc" +
+                        " FROM product p" +
+                        " LEFT JOIN category c ON p.categoryId = c.categoryId" +
+                        " WHERE " +
+                        "prodName LIKE ? OR " +
+                        "prodPrice LIKE ? OR " +
+                        "categoryName LIKE ? OR " +
+                        "prodDesc LIKE ?";
+
+        //add % wildcard so the query can use LIKE to filter data
+        String filteredString = "%" + filter + "%";
+
+        PreparedStatement stmt = conn.prepareStatement(sql);
+        stmt.setString(1, filteredString);
+        stmt.setString(2, filteredString);
+        stmt.setString(3, filteredString);
+        stmt.setString(4, filteredString);
+
+        //execute query
+        ResultSet rs = stmt.executeQuery();
+
+        //While there is still data add products to the list
+        while(rs.next()){
+            ProductDTO product = new ProductDTO(
+                    rs.getInt(1),
+                    rs.getString(2),
+                    rs.getDouble(3),
+                    rs.getInt(4),
+                    rs.getString(5),
+                    rs.getString(6));
+            products.add(product);
+        }
+
+        conn.close();
+        return products;
+    }
 }

src/main/java/org/example/petshopdesktop/database/SupplierDB.java

@@ -26,7 +26,7 @@ public class SupplierDB {
         Statement stmt = conn.createStatement();
         ResultSet rs = stmt.executeQuery("SELECT * FROM supplier");
 
-        //While there is still data add products to the list
+        //While there is still data add suppliers to the list
         while(rs.next()){
             Supplier supplier = new Supplier(
                     rs.getInt(1),
@@ -127,4 +127,54 @@ public class SupplierDB {
 
         return numRows;
     }
+
+    /**
+     * Gets a list of Suppliers that is filtered by a given string
+     * @param filter the word to filter table
+     * @return ObservableList of suppliers with the filtered data
+     * @throws SQLException if getting suppliers failed
+     */
+    public static ObservableList<Supplier> getFilteredSuppliers(String filter) throws SQLException {
+        //Connect to the database
+        ObservableList<Supplier> suppliers = FXCollections.observableArrayList();
+        Connection conn = ConnectionDB.getConnection();
+
+        //Get SQL query for filtered word
+        String sql =
+                "SELECT * FROM supplier" +
+                " WHERE " +
+                "supCompany LIKE ? OR " +
+                "supContactFirstName LIKE ? OR " +
+                "supContactLastName LIKE ? OR " +
+                "supEmail LIKE ? OR " +
+                "supPhone LIKE ?";
+
+        //add % wildcard so the query can use LIKE to filter data
+        String filteredString = "%" + filter + "%";
+
+        PreparedStatement stmt = conn.prepareStatement(sql);
+        stmt.setString(1, filteredString);
+        stmt.setString(2, filteredString);
+        stmt.setString(3, filteredString);
+        stmt.setString(4, filteredString);
+        stmt.setString(5, filteredString);
+
+        //execute query
+        ResultSet rs = stmt.executeQuery();
+
+        //While there is still data add suppliers to the list
+        while(rs.next()){
+            Supplier supplier = new Supplier(
+                    rs.getInt(1),
+                    rs.getString(2),
+                    rs.getString(3),
+                    rs.getString(4),
+                    rs.getString(5),
+                    rs.getString(6));
+            suppliers.add(supplier);
+        }
+
+        conn.close();
+        return suppliers;
+    }
 }

src/main/java/org/example/petshopdesktop/models/Category.java

@@ -0,0 +1,59 @@
+package org.example.petshopdesktop.models;
+
+import javafx.beans.property.SimpleIntegerProperty;
+import javafx.beans.property.SimpleStringProperty;
+
+public class Category {
+    private SimpleIntegerProperty categoryId;
+    private SimpleStringProperty categoryName;
+    private SimpleStringProperty categoryType;
+
+    //Constrctor
+    public Category(int categoryId, String categoryName, String categoryType) {
+        this.categoryId = new SimpleIntegerProperty(categoryId);
+        this.categoryName = new SimpleStringProperty(categoryName);
+        this.categoryType = new SimpleStringProperty(categoryType);
+    }
+
+    //getters and setters
+    public int getCategoryId() {
+        return categoryId.get();
+    }
+
+    public SimpleIntegerProperty categoryIdProperty() {
+        return categoryId;
+    }
+
+    public void setCategoryId(int categoryId) {
+        this.categoryId.set(categoryId);
+    }
+
+    public String getCategoryName() {
+        return categoryName.get();
+    }
+
+    public SimpleStringProperty categoryNameProperty() {
+        return categoryName;
+    }
+
+    public void setCategoryName(String categoryName) {
+        this.categoryName.set(categoryName);
+    }
+
+    public String getCategoryType() {
+        return categoryType.get();
+    }
+
+    public SimpleStringProperty categoryTypeProperty() {
+        return categoryType;
+    }
+
+    public void setCategoryType(String categoryType) {
+        this.categoryType.set(categoryType);
+    }
+
+    @Override
+    public String toString() {
+        return getCategoryName();
+    }
+}

src/main/java/org/example/petshopdesktop/models/Product.java

@@ -10,16 +10,14 @@ import javafx.beans.property.SimpleStringProperty;
 public class Product {
     private SimpleIntegerProperty prodId;
     private SimpleStringProperty prodName;
-    private SimpleStringProperty prodSku;
     private SimpleDoubleProperty prodPrice;
     private SimpleIntegerProperty categoryId;
     private SimpleStringProperty prodDesc;
 
     //constructor
-    public Product(int prodId, String prodName, String prodSku, double prodPrice, int categoryId, String prodDesc) {
+    public Product(int prodId, String prodName, double prodPrice, int categoryId, String prodDesc) {
         this.prodId = new SimpleIntegerProperty(prodId);
         this.prodName = new SimpleStringProperty(prodName);
-        this.prodSku = new SimpleStringProperty(prodSku);
         this.prodPrice = new SimpleDoubleProperty(prodPrice);
         this.categoryId = new SimpleIntegerProperty(categoryId);
         this.prodDesc = new SimpleStringProperty(prodDesc);
@@ -50,18 +48,6 @@ public class Product {
         this.prodName.set(prodName);
     }
 
-    public String getProdSku() {
-        return prodSku.get();
-    }
-
-    public SimpleStringProperty prodSkuProperty() {
-        return prodSku;
-    }
-
-    public void setProdSku(String prodSku) {
-        this.prodSku.set(prodSku);
-    }
-
     public double getProdPrice() {
         return prodPrice.get();
     }

src/main/resources/org/example/petshopdesktop/dialogviews/product-dialog-view.fxml

@@ -0,0 +1,149 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<?import javafx.geometry.Insets?>
+<?import javafx.scene.control.Button?>
+<?import javafx.scene.control.ComboBox?>
+<?import javafx.scene.control.Label?>
+<?import javafx.scene.control.TextField?>
+<?import javafx.scene.layout.ColumnConstraints?>
+<?import javafx.scene.layout.GridPane?>
+<?import javafx.scene.layout.HBox?>
+<?import javafx.scene.layout.Region?>
+<?import javafx.scene.layout.RowConstraints?>
+<?import javafx.scene.layout.VBox?>
+<?import javafx.scene.text.Font?>
+
+<VBox minHeight="-Infinity" minWidth="-Infinity" prefHeight="523.0" prefWidth="790.0" spacing="20.0" style="-fx-font-size: 14px;" xmlns="http://javafx.com/javafx/25" xmlns:fx="http://javafx.com/fxml/1" fx:controller="org.example.petshopdesktop.controllers.dialogcontrollers.ProductDialogController">
+   <children>
+      <HBox alignment="CENTER_LEFT" prefHeight="79.0" prefWidth="727.0" spacing="20.0" style="-fx-background-color: #2C3E50; -fx-background-radius: 14;">
+         <children>
+            <VBox alignment="CENTER_LEFT" prefHeight="79.0" prefWidth="246.0">
+               <children>
+                  <Label fx:id="lblMode" prefHeight="54.0" prefWidth="246.0" text="Mode Product" textFill="WHITE">
+                     <font>
+                        <Font name="Comic Sans MS Bold" size="30.0" />
+                     </font>
+                  </Label>
+                  <Label fx:id="lblProdId" text="ID: 1" textFill="#ffe66d">
+                     <font>
+                        <Font size="14.0" />
+                     </font>
+                     <VBox.margin>
+                        <Insets top="10.0" />
+                     </VBox.margin>
+                  </Label>
+               </children>
+               <padding>
+                  <Insets bottom="10.0" left="10.0" right="10.0" top="10.0" />
+               </padding>
+               <HBox.margin>
+                  <Insets />
+               </HBox.margin>
+            </VBox>
+            <Region prefHeight="79.0" prefWidth="243.0" HBox.hgrow="ALWAYS" />
+            <Button fx:id="btnCancel" layoutX="391.0" layoutY="38.0" mnemonicParsing="false" style="-fx-background-color: #E74c3c; -fx-cursor: hand; -fx-background-radius: 8;" text="Cancel" textFill="WHITE">
+               <font>
+                  <Font name="System Bold" size="14.0" />
+               </font>
+               <padding>
+                  <Insets bottom="12.0" left="24.0" right="24.0" top="12.0" />
+               </padding>
+            </Button>
+            <Button fx:id="btnSave" layoutX="520.0" layoutY="38.0" mnemonicParsing="false" style="-fx-background-color: #3fe06a; -fx-cursor: hand; -fx-background-radius: 8;" text="Save" textFill="WHITE">
+               <font>
+                  <Font name="System Bold" size="14.0" />
+               </font>
+               <padding>
+                  <Insets bottom="12.0" left="24.0" right="24.0" top="12.0" />
+               </padding>
+            </Button>
+         </children>
+         <padding>
+            <Insets left="15.0" right="15.0" />
+         </padding>
+      </HBox>
+      <VBox prefHeight="370.0" prefWidth="750.0" style="-fx-background-color: white; -fx-background-radius: 14; -fx-border-width: 2; -fx-border-color: #5580b5; -fx-border-radius: 14;">
+         <children>
+            <GridPane hgap="25.0" VBox.vgrow="ALWAYS">
+              <columnConstraints>
+                <ColumnConstraints hgrow="SOMETIMES" minWidth="10.0" prefWidth="100.0" />
+                <ColumnConstraints hgrow="SOMETIMES" minWidth="10.0" prefWidth="100.0" />
+              </columnConstraints>
+              <rowConstraints>
+                <RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
+                <RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
+                <RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
+              </rowConstraints>
+               <children>
+                  <VBox prefHeight="200.0" prefWidth="100.0" spacing="8.0">
+                     <children>
+                        <Label text="Product Name:" textFill="#2c3e50">
+                           <font>
+                              <Font name="System Bold" size="16.0" />
+                           </font>
+                        </Label>
+                        <TextField fx:id="txtProdName" style="-fx-border-color: #E8EBED; -fx-border-width: 2; -fx-border-radius: 10; -fx-background-radius: 10;">
+                           <padding>
+                              <Insets bottom="7.0" left="10.0" right="10.0" top="7.0" />
+                           </padding>
+                        </TextField>
+                     </children>
+                  </VBox>
+                  <VBox prefHeight="200.0" prefWidth="100.0" spacing="8.0" GridPane.columnIndex="1">
+                     <children>
+                        <Label text="Product Price:" textFill="#2c3e50">
+                           <font>
+                              <Font name="System Bold" size="16.0" />
+                           </font>
+                        </Label>
+                        <TextField fx:id="txtProdPrice" style="-fx-border-color: #E8EBED; -fx-border-width: 2; -fx-border-radius: 10; -fx-background-radius: 10;">
+                           <padding>
+                              <Insets bottom="7.0" left="10.0" right="10.0" top="7.0" />
+                           </padding>
+                        </TextField>
+                     </children>
+                  </VBox>
+                  <VBox prefHeight="200.0" prefWidth="100.0" spacing="8.0" GridPane.rowIndex="1">
+                     <children>
+                        <Label text="Category:" textFill="#2c3e50">
+                           <font>
+                              <Font name="System Bold" size="16.0" />
+                           </font>
+                        </Label>
+                        <ComboBox fx:id="cbProdCategory" prefHeight="29.0" prefWidth="336.0" promptText="Select Category" style="-fx-border-color: #E8EBED; -fx-border-width: 2; -fx-border-radius: 10; -fx-background-radius: 10; -fx-background-color: white;">
+                           <padding>
+                              <Insets bottom="3.0" left="10.0" right="10.0" top="3.0" />
+                           </padding>
+                        </ComboBox>
+                     </children>
+                  </VBox>
+                  <VBox prefHeight="200.0" prefWidth="100.0" spacing="8.0" GridPane.columnIndex="1" GridPane.rowIndex="1">
+                     <children>
+                        <Label text="Description:" textFill="#2c3e50">
+                           <font>
+                              <Font name="System Bold" size="16.0" />
+                           </font>
+                        </Label>
+                        <TextField fx:id="txtProdDesc" style="-fx-border-color: #E8EBED; -fx-border-width: 2; -fx-border-radius: 10; -fx-background-radius: 10;">
+                           <padding>
+                              <Insets bottom="7.0" left="10.0" right="10.0" top="7.0" />
+                           </padding>
+                        </TextField>
+                     </children>
+                  </VBox>
+                  <VBox prefHeight="200.0" prefWidth="100.0" spacing="8.0" GridPane.rowIndex="2" />
+               </children>
+               <VBox.margin>
+                  <Insets bottom="15.0" left="15.0" right="15.0" top="15.0" />
+               </VBox.margin>
+            </GridPane>
+         </children>
+         <padding>
+            <Insets bottom="15.0" left="15.0" right="15.0" top="15.0" />
+         </padding>
+      </VBox>
+   </children>
+   <padding>
+      <Insets bottom="20.0" left="20.0" right="20.0" top="20.0" />
+   </padding>
+</VBox>

src/main/resources/org/example/petshopdesktop/modelviews/product-view.fxml

@@ -68,11 +68,10 @@
       <TableView fx:id="tvProducts" prefHeight="362.0" prefWidth="752.0" style="-fx-background-color: white; -fx-background-radius: 12;" VBox.vgrow="ALWAYS">
         <columns>
           <TableColumn fx:id="colProductId" prefWidth="60.0" text="ID" />
-          <TableColumn fx:id="colProductName" prefWidth="150.0" text="Name" />
-            <TableColumn fx:id="colProductCategory" prefWidth="150.0" text="Category" />
-            <TableColumn fx:id="colProductDesc" prefWidth="220.0" text="Description" />
-            <TableColumn fx:id="colProductPrice" prefWidth="100.0" text="Price" />
-            <TableColumn fx:id="colProductSKU" prefWidth="70.2857666015625" text="SKU" />
+          <TableColumn fx:id="colProductName" prefWidth="170.85714721679688" text="Name" />
+            <TableColumn fx:id="colProductCategory" prefWidth="195.4285888671875" text="Category" />
+            <TableColumn fx:id="colProductDesc" prefWidth="210.28570556640625" text="Description" />
+            <TableColumn fx:id="colProductPrice" prefWidth="115.4285888671875" text="Price" />
         </columns>
       </TableView>
    </children>