implemented business methods findContactByEmailAddress() and isEmailAddressRegistered()

diff --git a/src/java/org/mxchange/jcontacts/contact/PizzaContactSessionBean.java b/src/java/org/mxchange/jcontacts/contact/PizzaContactSessionBean.java
index 569cea5e09b3a937aaab16eb8ebba44cb200ca47..29b765a93f8db868619c798945059256ee099286 100644 (file)
--- a/src/java/org/mxchange/jcontacts/contact/PizzaContactSessionBean.java
+++ b/src/java/org/mxchange/jcontacts/contact/PizzaContactSessionBean.java
@@ -80,6 +80,48 @@ public class PizzaContactSessionBean extends BasePizzaDatabaseBean implements Co
                return contact;
        }
 
+       @Override
+       public Contact findContactByEmailAddress (final String emailAddress) throws ContactNotFoundException {
+               // Log trace message
+               this.getLoggerBeanLocal().logTrace(MessageFormat.format("findContactByEmailAddress: emailAddress={0} - CALLED!", emailAddress)); //NOI18N
+
+               // The parameter must be valid
+               if (null == emailAddress) {
+                       // Throw NPE
+                       throw new NullPointerException("emailAddress is null"); //NOI18N
+               } else if (emailAddress.isEmpty()) {
+                       // Not valid
+                       throw new IllegalArgumentException("emailAddress is empty"); //NOI18N
+               }
+
+               // Get query instance
+               Query query = this.getEntityManager().createNamedQuery("SearchContactByEmailAddress", UserContact.class); //NOI18N
+
+               // Set parameter
+               query.setParameter("emailAddress", emailAddress); //NOI18N
+
+               // Init contact instance
+               Contact contact;
+
+               // Try to find a result
+               try {
+                       // Find a single result
+                       contact = (Contact) query.getSingleResult();
+
+                       // Log trace message
+                       this.getLoggerBeanLocal().logTrace(MessageFormat.format("findContactByEmailAddress: Found contact={0}", contact)); //NOI18N
+               } catch (final NoResultException ex) {
+                       // No result found
+                       throw new ContactNotFoundException(emailAddress, ex);
+               }
+
+               // Log trace message
+               this.getLoggerBeanLocal().logTrace(MessageFormat.format("findContactByEmailAddress: contact={0} - EXIT!", contact)); //NOI18N
+
+               // Return found instance
+               return contact;
+       }
+
        @Override
        public Contact findContactById (final Long contactId) throws ContactNotFoundException {
                // Log trace message
@@ -160,6 +202,43 @@ public class PizzaContactSessionBean extends BasePizzaDatabaseBean implements Co
                return emailAddresses;
        }
 
+       @Override
+       public boolean isEmailAddressRegistered (final String emailAddress) {
+               // Log trace message
+               this.getLoggerBeanLocal().logTrace(MessageFormat.format("isEmailAddressRegistered: emailAddress={0} - CALLED!", emailAddress)); //NOI18N
+
+               // The email address should be valid
+               if (null == emailAddress) {
+                       // Is null
+                       throw new NullPointerException("emailAddress is null");
+               } else if (emailAddress.isEmpty()) {
+                       // Is empty
+                       throw new IllegalArgumentException("emailAddress is empty");
+               }
+
+               // Default is not found
+               boolean isFound = false;
+
+               try {
+                       // Ask other method for contact instance
+                       Contact contact = this.findContactByEmailAddress(emailAddress);
+
+                       // Log debug message
+                       this.getLoggerBeanLocal().logDebug(MessageFormat.format("isEmailAddressRegistered: Found contact={0} for emailAddress={1}", contact, emailAddress));
+
+                       // It is found ...
+                       isFound = true;
+               } catch (final ContactNotFoundException ex) {
+                       // @TODO Was not found, log exception for spam check?
+               }
+
+               // Log trace message
+               this.getLoggerBeanLocal().logTrace(MessageFormat.format("isEmailAddressRegistered: isFound={0} - EXIT!", isFound));
+
+               // Return status
+               return isFound;
+       }
+
        @Override
        public Contact lookupContact (final Contact contact) {
                // Log trace message