* Adds given category data from request to database
* <p>
* @param category Category instance
+ * <p>
* @throws
* org.mxchange.jshopcore.exceptions.CategoryTitleAlreadyUsedException If
* the category's title has been used
* Adds given product data from request to database
* <p>
* @param product Product instance
+ * <p>
* @throws
* org.mxchange.jshopcore.exceptions.ProductTitleAlreadyUsedException If the
* * product's title has been used
* Checks whether given category title is already used
* <p>
* @param title Title of category to check
+ * <p>
* @return Whether it has been found
*/
private boolean isCategoryTitleUsed (final String title) {
* Checks if category's title is already used.
* <p>
* @param category Category instance
+ * <p>
* @return Whether the product title is already used
*/
private boolean isCategoryTitleUsed (final Category category) {
* Checks if product's title is already used.
* <p>
* @param product Product instance
+ * <p>
* @return Whether the product title is already used
*/
private boolean isProductTitleUsed (final Product product) {