added persistence functionality (JPA with Hibernate ORM and PostgreSQL JDBC driver) to save hits data to postgres database

.idea/artifacts/web_lab3_ear_exploded.xml

@@ -0,0 +1,8 @@
+<component name="ArtifactManager">
+  <artifact type="exploded-ear" name="web-lab3:ear exploded">
+    <output-path>$PROJECT_DIR$/out/artifacts/web_lab3_ear_exploded</output-path>
+    <root id="root">
+      <element id="javaee-facet-resources" facet="web-lab3/javaeeApplication/javaEEApplication" />
+    </root>
+  </artifact>
+</component>

.idea/artifacts/web_lab3_main_ear_exploded.xml

@@ -0,0 +1,8 @@
+<component name="ArtifactManager">
+  <artifact type="exploded-ear" name="web-lab3.main:ear exploded">
+    <output-path>$PROJECT_DIR$/out/artifacts/web_lab3_main_ear_exploded</output-path>
+    <root id="root">
+      <element id="javaee-facet-resources" facet="web-lab3.main/javaeeApplication/javaEEApplication" />
+    </root>
+  </artifact>
+</component>

.idea/dataSources.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="DataSourceManagerImpl" format="xml" multifile-model="true">
+    <data-source source="LOCAL" name="helios postgres" uuid="1d89802b-1b14-4f1f-bdf1-c835d25f1fd2">
+      <driver-ref>postgresql</driver-ref>
+      <synchronize>true</synchronize>
+      <jdbc-driver>org.postgresql.Driver</jdbc-driver>
+      <jdbc-url>jdbc:postgresql://pg:5432/studs</jdbc-url>
+      <working-dir>$ProjectFileDir$</working-dir>
+    </data-source>
+  </component>
+</project>

.idea/deployment.xml

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="PublishConfigData" remoteFilesAllowedToDisappearOnAutoupload="false">
+    <serverData>
+      <paths name="helios">
+        <serverdata>
+          <mappings>
+            <mapping deploy="web\lab3\main" local="$PROJECT_DIR$/src/main" web="web\lab3\main" />
+            <mapping deploy="web\lab3\test" local="$PROJECT_DIR$/src/test" web="web\lab3\test" />
+            <mapping deploy="web\lab3" local="$PROJECT_DIR$" web="web\lab3" />
+          </mappings>
+        </serverdata>
+      </paths>
+    </serverData>
+  </component>
+</project>

.idea/modules/META-INF/orm.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<entity-mappings xmlns="https://jakarta.ee/xml/ns/persistence/orm"
+                 version="3.0">
+
+</entity-mappings>

.idea/modules/META-INF/persistence.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<persistence xmlns="https://jakarta.ee/xml/ns/persistence"
+             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+             xsi:schemaLocation="https://jakarta.ee/xml/ns/persistence https://jakarta.ee/xml/ns/persistence/persistence_3_0.xsd"
+             version="3.0">
+  <persistence-unit name="default">
+
+  </persistence-unit>
+</persistence>

.idea/webServers.xml

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="WebServers">
+    <option name="servers">
+      <webServer id="c14c7a48-1f31-4ae7-816f-cf7bb40354cf" name="helios" url="http://helios.se.ifmo.ru">
+        <fileTransfer rootFolder="/home/studs/s316304" accessType="SFTP" host="helios.se.ifmo.ru" port="2222" sshConfigId="d2a90d61-c2d5-41f1-bfff-50b7f6ebca77" sshConfig="s316304@helios.se.ifmo.ru:2222 password">
+          <advancedOptions>
+            <advancedOptions dataProtectionLevel="Private" keepAliveTimeout="0" passiveMode="true" shareSSLContext="true" />
+          </advancedOptions>
+        </fileTransfer>
+      </webServer>
+    </option>
+  </component>
+</project>

src/main/META-INF/application.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<application xmlns="http://xmlns.jcp.org/xml/ns/javaee"
+             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+             xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/application_8.xsd"
+             version="8">
+
+</application>

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

@@ -3,5 +3,5 @@
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee
                       http://xmlns.jcp.org/xml/ns/javaee/beans_1_1.xsd"
-       bean-discovery-mode="all">
+       bean-discovery-mode="annotated">
 </beans>

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

@@ -1,8 +1,8 @@
 <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
-<persistence xmlns="http://xmlns.jcp.org/xml/ns/persistence"
+<persistence xmlns="https://jakarta.ee/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_2.xsd"
-             version="2.2">
+             xsi:schemaLocation="https://jakarta.ee/xml/ns/persistence https://jakarta.ee/xml/ns/persistence/persistence_3_0.xsd"
+             version="3.0">
   <persistence-unit name="default">
 
   </persistence-unit>

src/main/resources/hibernate.cfg.xml

@@ -0,0 +1,15 @@
+<?xml version='1.0' encoding='utf-8'?>
+<!DOCTYPE hibernate-configuration PUBLIC
+    "-//Hibernate/Hibernate Configuration DTD//EN"
+    "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
+<hibernate-configuration>
+  <session-factory>
+    <property name="connection.url"/>
+    <property name="connection.driver_class"/>
+    <!-- <property name="connection.username"/> -->
+    <!-- <property name="connection.password"/> -->
+
+    <!-- DB schema will be updated if needed -->
+    <!-- <property name="hibernate.hbm2ddl.auto">update</property> -->
+  </session-factory>
+</hibernate-configuration>

src/main/webapp/WEB-INF/beans.xml

@@ -1,7 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<beans xmlns="http://xmlns.jcp.org/xml/ns/javaee"
-       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-       xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee
-                      http://xmlns.jcp.org/xml/ns/javaee/beans_1_1.xsd"
-       bean-discovery-mode="annotated">
-</beans>