From: Roland Haeder <roland@mxchange.org>
Date: Fri, 31 Jul 2015 06:37:35 +0000 (+0200)
Subject: Handled / throw some exceptions
X-Git-Url: https://git.mxchange.org/?a=commitdiff_plain;h=2a18cd0b61e88043c3e6c3d4b653462cf1c81915;p=addressbook-lib.git

Handled / throw some exceptions
Signed-off-by:Roland Häder <roland@mxchange.org>
---

diff --git a/Addressbook/src/org/mxchange/addressbook/database/backend/mysql/MySqlDatabaseBackend.java b/Addressbook/src/org/mxchange/addressbook/database/backend/mysql/MySqlDatabaseBackend.java
index d863cb2..d95afb3 100644
--- a/Addressbook/src/org/mxchange/addressbook/database/backend/mysql/MySqlDatabaseBackend.java
+++ b/Addressbook/src/org/mxchange/addressbook/database/backend/mysql/MySqlDatabaseBackend.java
@@ -129,6 +129,9 @@ public class MySqlDatabaseBackend extends BaseDatabaseBackend implements Databas
 
 	@Override
 	public int getTotalCount () throws SQLException {
+		// Trace message
+		this.getLogger().trace(MessageFormat.format("tableName={0} - CALLED!", this.getTableName())); //NOI18N
+
 		// Nothing counted by default
 		int count = 0;
 
@@ -143,10 +146,19 @@ public class MySqlDatabaseBackend extends BaseDatabaseBackend implements Databas
 			// Get integer from 'cnt' alias (see statement)
 			count = set.getInt("cnt"); //NOI18N
 
+			// Debug message
+			this.getLogger().debug(MessageFormat.format("count={0}", count)); //NOI18N
+
 			// Go back to beginning
 			set.beforeFirst();
+		} else {
+			// Empty result
+			this.getLogger().warn(MessageFormat.format("COUNT() query didn't return any result on table {0}.", this.getTableName())); //NOI18N
 		}
 
+		// Trace message
+		this.getLogger().trace(MessageFormat.format("count={0} - EXIT!", count)); //NOI18N
+
 		// Return result
 		return count;
 	}
diff --git a/Addressbook/src/org/mxchange/addressbook/database/frontend/contact/ContactDatabaseFrontend.java b/Addressbook/src/org/mxchange/addressbook/database/frontend/contact/ContactDatabaseFrontend.java
index 2f4edd0..dc5cdb0 100644
--- a/Addressbook/src/org/mxchange/addressbook/database/frontend/contact/ContactDatabaseFrontend.java
+++ b/Addressbook/src/org/mxchange/addressbook/database/frontend/contact/ContactDatabaseFrontend.java
@@ -139,7 +139,7 @@ public class ContactDatabaseFrontend extends BaseDatabaseFrontend implements Con
 	 * @return Total contact count
 	 */
 	@Override
-	public int getContactsCount () {
+	public int getContactsCount () throws SQLException {
 		// And deligate to backend
 		return this.getBackend().getTotalCount(); //NOI18N
 	}
@@ -209,7 +209,7 @@ public class ContactDatabaseFrontend extends BaseDatabaseFrontend implements Con
 	 * @return Whether own contact is found
 	 */
 	@Override
-	public boolean isOwnContactFound () {
+	public boolean isOwnContactFound () throws SQLException {
 		// Deligate this call to backend
 		return this.getBackend().isRowFound(ContactDatabaseConstants.COLUMN_NAME_OWN_CONTACT, true);
 	}
diff --git a/Addressbook/src/org/mxchange/addressbook/database/frontend/contact/ContactWrapper.java b/Addressbook/src/org/mxchange/addressbook/database/frontend/contact/ContactWrapper.java
index fdf0cf3..011f1a5 100644
--- a/Addressbook/src/org/mxchange/addressbook/database/frontend/contact/ContactWrapper.java
+++ b/Addressbook/src/org/mxchange/addressbook/database/frontend/contact/ContactWrapper.java
@@ -16,6 +16,7 @@
  */
 package org.mxchange.addressbook.database.frontend.contact;
 
+import java.sql.SQLException;
 import org.mxchange.addressbook.contact.Contact;
 import org.mxchange.addressbook.database.frontend.DatabaseWrapper;
 import org.mxchange.addressbook.exceptions.BadTokenException;
@@ -44,8 +45,9 @@ public interface ContactWrapper extends DatabaseWrapper {
 	 * Some "getter" for total contacts count
 	 *
 	 * @return Total contacts count
+	 * @throws java.sql.SQLException If any SQL error occurs
 	 */
-	public int getContactsCount ();
+	public int getContactsCount () throws SQLException;
 
 	/**
 	 * Checks if given Contact is found
@@ -67,6 +69,7 @@ public interface ContactWrapper extends DatabaseWrapper {
 	 * Checks whether own contact is found
 	 * 
 	 * @return Whether own contact is found
+	 * @throws java.sql.SQLException If any SQL error occurs
 	 */
-	public boolean isOwnContactFound ();
+	public boolean isOwnContactFound () throws SQLException;
 }
diff --git a/Addressbook/src/org/mxchange/addressbook/manager/contact/ContactManager.java b/Addressbook/src/org/mxchange/addressbook/manager/contact/ContactManager.java
index 93ed118..66cd7ee 100644
--- a/Addressbook/src/org/mxchange/addressbook/manager/contact/ContactManager.java
+++ b/Addressbook/src/org/mxchange/addressbook/manager/contact/ContactManager.java
@@ -16,6 +16,7 @@
  */
 package org.mxchange.addressbook.manager.contact;
 
+import java.sql.SQLException;
 import java.text.MessageFormat;
 import java.util.ArrayList;
 import java.util.Iterator;
@@ -518,8 +519,16 @@ public class ContactManager extends BaseManager implements ManageableContact {
 		// Trace message
 		this.getLogger().trace("CALLED!"); //NOI18N
 
-		// Deligate this call to frontend
-		boolean isAdded = this.getContactDatabase().isOwnContactFound();
+		// Init variable
+		boolean isAdded = false;
+
+		try {
+			// Deligate this call to frontend
+			isAdded = this.getContactDatabase().isOwnContactFound();
+		} catch (final SQLException ex) {
+			// Something bad happened
+			this.abortProgramWithException(ex);
+		}
 
 		// Trace message
 		this.getLogger().trace(MessageFormat.format("isAdded={0} : EXIT!", isAdded)); //NOI18N
@@ -578,7 +587,18 @@ public class ContactManager extends BaseManager implements ManageableContact {
 	 */
 	@Override
 	public final int size () {
-		return this.getContactDatabase().getContactsCount();
+		// Init size
+		int size = -1;
+
+		try {
+			size = this.getContactDatabase().getContactsCount();
+		} catch (final SQLException ex) {
+			// Something happened
+			this.abortProgramWithException(ex);
+		}
+
+		// Return amount
+		return size;
 	}
 
 	/**