From 30f5640c849a70f40c41989e3caa790892424b41 Mon Sep 17 00:00:00 2001
From: Roland Haeder <roland@mxchange.org>
Date: Thu, 15 Oct 2015 12:17:44 +0200
Subject: [PATCH] =?utf8?q?added=20cache=20(back!)=20for=20user=20status=20?=
 =?utf8?q?and=20let=20the=20status=20being=20updated=20on=20registration?=
 =?utf8?q?=20Signed-off-by:Roland=20H=C3=A4der=20<roland@mxchange.org>?=
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---
 .../validator/user/UserIdValidator.java       | 62 ++++++++++++++++++-
 1 file changed, 60 insertions(+), 2 deletions(-)

diff --git a/src/org/mxchange/addressbook/validator/user/UserIdValidator.java b/src/org/mxchange/addressbook/validator/user/UserIdValidator.java
index e8836f6..a3ff257 100644
--- a/src/org/mxchange/addressbook/validator/user/UserIdValidator.java
+++ b/src/org/mxchange/addressbook/validator/user/UserIdValidator.java
@@ -17,7 +17,10 @@
 package org.mxchange.addressbook.validator.user;
 
 import java.text.MessageFormat;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.ConcurrentMap;
 import javax.ejb.EJB;
+import javax.enterprise.event.Observes;
 import javax.faces.application.FacesMessage;
 import javax.faces.component.UIComponent;
 import javax.faces.context.FacesContext;
@@ -25,6 +28,8 @@ import javax.faces.validator.FacesValidator;
 import javax.faces.validator.Validator;
 import javax.faces.validator.ValidatorException;
 import org.mxchange.jcoreee.validator.number.BaseLongValidator;
+import org.mxchange.jusercore.events.registration.UserRegisteredEvent;
+import org.mxchange.jusercore.model.user.User;
 import org.mxchange.jusercore.model.user.UserSessionBeanRemote;
 
 /**
@@ -46,6 +51,19 @@ public class UserIdValidator extends BaseLongValidator implements Validator {
 	@EJB (mappedName = "ejb/stateless-user")
 	private UserSessionBeanRemote userBean;
 
+	/**
+	 * Cached user status
+	 */
+	private final ConcurrentMap<Long, Boolean> cachedStatus;
+
+	/**
+	 * Default constructor
+	 */
+	public UserIdValidator () {
+		// Init map
+		this.cachedStatus = new ConcurrentHashMap<>(0);
+	}
+
 	@Override
 	public void validate (final FacesContext context, final UIComponent component, final Object value) throws ValidatorException {
 		// Trace message
@@ -60,8 +78,20 @@ public class UserIdValidator extends BaseLongValidator implements Validator {
 		// Cast value
 		Long number = (Long) value;
 
-		// Get status
-		Boolean ifUserExists = this.userBean.ifUserIdExists(number);
+		// Define variable
+		Boolean ifUserExists = false;
+
+		// Is a map entry there?
+		if (this.cachedStatus.containsKey(number)) {
+			// Get from cache
+			ifUserExists = this.cachedStatus.get(number);
+		} else {
+			// Get status
+			ifUserExists = this.userBean.ifUserIdExists(number);
+
+			// Add to cache
+			this.cachedStatus.put(number, ifUserExists);
+		}
 
 		// Is the address book id valid?
 		if (!ifUserExists) {
@@ -72,4 +102,32 @@ public class UserIdValidator extends BaseLongValidator implements Validator {
 		// Trace message
 		//this.getLogger().logTrace("validate: EXIT!"); //NOI18N
 	}
+
+	/**
+	 * Event fired when the user registration is complete
+	 * <p>
+	 * @param event User registration event
+	 */
+	public void afterRegistration (final @Observes UserRegisteredEvent event) {
+		// event should not be null
+		if (null == event) {
+			// Throw NPE
+			throw new NullPointerException("event is null"); //NOI18N
+		} else if (event.getUser() == null) {
+			// Throw NPE again
+			throw new NullPointerException("event.user is null"); //NOI18N
+		} else if (event.getUser().getUserId() == null) {
+			// userId is null
+			throw new NullPointerException("event.user.userId is null"); //NOI18N
+		} else if (event.getUser().getUserId() < 1) {
+			// Not avalid id
+			throw new IllegalArgumentException(MessageFormat.format("userId of user={0} is not valid: {1}", event.getUser(), event.getUser().getUserId())); //NOI18N
+		}
+
+		// Get user instance
+		User registeredUser = event.getUser();
+
+		// Update cache
+		this.cachedStatus.put(registeredUser.getUserId(), Boolean.TRUE);
+	}
 }
-- 
2.39.2