Added writing capabilities to ObjectProcessor, completed db integration

At this moment the client is not able to receive to objects sent
consecutively. This will be worked on in a future commit and should be
fixed before merging this branch into develop.

src/main/resources/META-INF/persistence.xml

@@ -0,0 +1,29 @@
+<persistence xmlns="http://xmlns.jcp.org/xml/ns/persistence"
+	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence
+             http://xmlns.jcp.org/xml/ns/persistence/persistence_2_1.xsd"
+	version="2.1">
+
+	<persistence-unit name="envoy"
+		transaction-type="RESOURCE_LOCAL">
+
+		<properties>
+			<property name="javax.persistence.jdbc.driver"
+				value="org.postgresql.Driver" /> <!-- DB Driver -->
+			<property name="javax.persistence.jdbc.url"
+				value="jdbc:postgresql://localhost/envoy" /> <!-- BD Mane -->
+			<property name="javax.persistence.jdbc.user" value="envoy" /> <!-- DB User -->
+			<property name="javax.persistence.jdbc.password"
+				value="envoy" /> <!-- DB Password -->
+
+			<property name="hibernate.dialect"
+				value="org.hibernate.dialect.PostgreSQL95Dialect" /> <!-- DB Dialect -->
+			<property name="hibernate.hbm2ddl.auto" value="update" /> <!-- create / create-drop / update -->
+
+			<property name="hibernate.show_sql" value="true" /> <!-- Show SQL in console -->
+			<property name="hibernate.format_sql" value="true" /> <!-- Show SQL formatted -->
+		</properties>
+
+	</persistence-unit>
+
+</persistence>