X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=src%2Forg%2Fmxchange%2Fjshopcore%2Fmodel%2Fcustomer%2FCustomerUtils.java;h=5eb699c9c32aa74aa56e76504d195b1e5e919f98;hb=672084ab2c551cbff8c8c424780ed344f7c13925;hp=e712d771953cb3555ba7d4eb5ed2bd3c2f33e765;hpb=bfdaf7bd8f98ad11892b5c6c38eb301985785d3a;p=jcustomer-core.git

diff --git a/src/org/mxchange/jshopcore/model/customer/CustomerUtils.java b/src/org/mxchange/jshopcore/model/customer/CustomerUtils.java
index e712d77..5eb699c 100644
--- a/src/org/mxchange/jshopcore/model/customer/CustomerUtils.java
+++ b/src/org/mxchange/jshopcore/model/customer/CustomerUtils.java
@@ -16,17 +16,18 @@
  */
 package org.mxchange.jshopcore.model.customer;
 
-import java.sql.Connection;
-import java.sql.PreparedStatement;
-import java.sql.ResultSet;
 import java.sql.SQLException;
-import java.text.MessageFormat;
+import javax.persistence.EntityManager;
+import javax.persistence.EntityNotFoundException;
+import org.apache.commons.codec.binary.Base64;
+import org.apache.commons.codec.digest.Sha2Crypt;
 import org.mxchange.jcore.BaseFrameworkSystem;
-import org.mxchange.jcoreeelogger.beans.local.logger.LoggerBeanLocal;
+import org.mxchange.jshopcore.model.order.Orderable;
+import org.mxchange.jshopcore.model.order.ShopOrder;
 
 /**
  * An utilities class for customers
- *
+ * <p>
  * @author Roland Haeder
  */
 public class CustomerUtils extends BaseFrameworkSystem {
@@ -39,69 +40,112 @@ public class CustomerUtils extends BaseFrameworkSystem {
 
 	/**
 	 * Generates an unique customer number by checking is existence
-	 *
-	 * @param connection Connection instance
-	 * @param logger Logger instance
+	 * <p>
+	 * @param em Entity manager instance
 	 * @return Generated customer number (not used before)
 	 * @throws java.sql.SQLException If any SQL error occured
 	 */
-	public static String generateCustomerNumber (final Connection connection, final LoggerBeanLocal logger) throws SQLException {
-		// logger cannot be null
-		if (null == logger) {
-			// Abort here
-			throw new NullPointerException("logger is null");
-		}
-
+	public static String generateCustomerNumber (final EntityManager em) throws SQLException {
 		// Trace message
-		logger.logTrace(MessageFormat.format("generateCustomerNumber: connection={0},logger={1} - CALLED!", connection, logger));
+		// TODO: utils.getLogger().logTrace(MessageFormat.format("generateCustomerNumber: connection={0} - CALLED!", connection));
 
-		// connection cannot be null
-		if (null == connection) {
+		// em cannot be null
+		if (null == em) {
 			// Abort here
-			throw new NullPointerException("connection is null");
+			throw new NullPointerException("em is null"); //NOI18N
+		} else if (!em.isOpen()) {
+			// Not open
+			throw new IllegalStateException("Entity manager is closed.");
 		}
 
-		// Prepare statement
-		PreparedStatement statement = connection.prepareStatement("SELECT `id` FROM `customer` WHERE `customer_number` = ? LIMIT 1");
+		// Fake customer instance
+		Customer customer = null;
 
 		// Generate number
-		String customerNumber = Long.toString(Math.round(Math.random() * 100000)) + "-" +  Long.toString(Math.round(Math.random() * 1000));
+		String customerNumber = null;
 
 		// Default is found
 		boolean isFound = true;
 
+		// Declare variables
+		long part1;
+		long part2;
+
 		// Is the number used?
 		while (isFound) {
-			// Debug message
-			logger.logDebug(MessageFormat.format("generateCustomerNumber: customerNumber={0}", customerNumber));
+			// Both number parts
+			part1 = Math.round(Math.random() * 100_000);
+			part2 = Math.round(Math.random() * 1_000);
+
+			// Generate new number
+			customerNumber = String.format("%s-%s", part1, part2); //NOI18N
+
+			// Try it
+			try {
+				// Get instance
+				customer = em.getReference(ShopCustomer.class, customerNumber);
+			} catch (final EntityNotFoundException ex) {
+				// Not found
+				isFound = false;
+			}
+		}
+
+		// Trace message
+		// TODO: utils.getLogger().logTrace(MessageFormat.format("generateCustomerNumber: customerNumber={0} - EXIT!", customerNumber));
+		// Found one
+		return customerNumber;
+	}
 
-			// Insert customer number
-			statement.setString(0, customerNumber);
+	/**
+	 * Generates an unique access key.
+	 * <p>
+	 * @param em Entity manager instance
+	 * @param customer Customer instance
+	 * @return An unique access key
+	 */
+	public static String generateAccessKey (final EntityManager em, final Customer customer) {
+		// Trace message
+		// TODO: utils.getLogger().logTrace(MessageFormat.format("generateAccessKey: connection={0} - CALLED!", connection));
 
-			// Find it
-			statement.execute();
+		// em cannot be null
+		if (null == em) {
+			// Abort here
+			throw new NullPointerException("em is null"); //NOI18N
+		} else if (!em.isOpen()) {
+			// Not open
+			throw new IllegalStateException("Entity manager is closed.");
+		}
 
-			// Get result
-			ResultSet result = statement.getResultSet();
+		// Generate fake order instance
+		Orderable orderable = null;
 
-			// Rewind it
-			result.beforeFirst();
+		// Generate access keyy
+		String accessKey = null;
 
-			// Found a record?
-			if (result.isLast()) {
-				// Not found
+		// Default is found
+		boolean isFound = true;
+
+		// Is the number used?
+		while (isFound) {
+			// Both number parts
+			String randString = String.format("%s:%s:%s", Long.toHexString(Math.round(Math.random() * 1_000_000)), em, customer.getCustomerNumber());
+
+			// Generate access key, use SHA512 hashing and BASE64-encoding for strong key generation
+			accessKey = Base64.encodeBase64String(Sha2Crypt.sha512Crypt(randString.getBytes()).getBytes()).substring(0, 100);
+
+			// Try this
+			try {
+				// Get reference
+				orderable = em.getReference(ShopOrder.class, accessKey);
+			} catch (final EntityNotFoundException ex) {
+				// Not found, so abort loop here
 				isFound = false;
-				break;
 			}
-
-			// Generate new number
-			customerNumber = Long.toString(Math.round(Math.random() * 100000)) + "-" +  Long.toString(Math.round(Math.random() * 1000));
 		}
 
 		// Trace message
-		logger.logTrace(MessageFormat.format("generateCustomerNumber: customerNumber={0} - EXIT!", customerNumber));
-
+		// TODO: utils.getLogger().logTrace(MessageFormat.format("generateAccessKey: accessKey={0} - EXIT!", accessKey));
 		// Found one
-		return customerNumber;
+		return accessKey;
 	}
 }