$ tar xvzf apache-tomcat-7.0.26.tar.gz
$ sudo mv apache-tomcat-7.0.26/ /usr/share/tomcat7

JAVA_HOME="/usr/lib/jvm/java-7-sun/"
JRE_HOME="/usr/lib/jvm/java-7-sun/jre"
PATH="/usr/local/sbin:/usr/games:$JAVA_HOME:$JRE_HOME"

JAVA_HOME="/usr/lib/jvm/java-7-sun/"
JRE_HOME="/usr/lib/jvm/java-7-sun/jre"

<user username="yourAdminUsername" password="yourAdminPassword"
 roles="manager-gui,admin-gui,manager,admin,manager-script,admin-script"/>

$ sudo /usr/share/tomcat7/bin/startup.sh

$ cd /tmp
$ wget http://127.0.0.1:8080

$ iptables -I INPUT 1 -i lo -j ACCEPT
$ iptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
$ iptables -A INPUT -p tcp --dport 80 -j ACCEPT
$ iptables -A INPUT -p tcp --dport 22 -j ACCEPT
$ iptables -A INPUT -j DROP
$ iptables -t nat -A PREROUTING -p tcp --dport 80 -j REDIRECT --to-port 8080
$ iptables -I INPUT 3 -p tcp --dport 8080 -j ACCEPT
$ iptables -t nat -A OUTPUT -o lo -p tcp --dport 80 -j REDIRECT --to-port 8080
$ iptables-save > /etc/iptables.rules

    <dependency>
      <groupId>com.spaceprogram</groupId>
      <artifactId>simplejpa</artifactId>
      <version>1.5</version>
    </dependency>

mvn install:install-file
 -Dfile=PathToJARFile\simplejpa-1.5.jar
 -DgroupId=com.spaceprogram
 -DartifactId=simplejpa -Dversion=1.5 -Dpackaging=jar -DgeneratePom=true

 <dependencies>
    <dependency>
      <groupId>cglib</groupId>
      <artifactId>cglib-nodep</artifactId>
      <version>2.2.2</version>
    </dependency>
    <dependency>
      <groupId>com.amazonaws</groupId>
      <artifactId>aws-java-sdk</artifactId>
      <version>1.0.002</version>
    </dependency>
    <dependency>
      <groupId>com.spaceprogram</groupId>
      <artifactId>kitty-cache</artifactId>
      <version>1.2</version>
    </dependency>
    <dependency>
      <groupId>commons-codec</groupId>
      <artifactId>commons-codec</artifactId>
      <version>1.6</version>
    </dependency>
    <dependency>
      <groupId>commons-collections</groupId>
      <artifactId>commons-collections</artifactId>
      <version>3.2.1</version>
    </dependency>
    <dependency>
      <groupId>commons-lang</groupId>
      <artifactId>commons-lang</artifactId>
      <version>2.6</version>
    </dependency>
    <dependency>
      <groupId>commons-logging</groupId>
      <artifactId>commons-logging</artifactId>
      <version>1.1.1</version>
    </dependency>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>3.8.1</version>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>net.sf.ehcache</groupId>
      <artifactId>ehcache-core</artifactId>
      <version>2.5.0</version>
    </dependency>
    <dependency>
      <groupId>net.sf.scannotation</groupId>
      <artifactId>scannotation</artifactId>
      <version>1.0.2</version>
    </dependency>
    <dependency>
      <groupId>org.apache.httpcomponents</groupId>
      <artifactId>httpclient</artifactId>
      <version>4.1.2</version>
    </dependency>
    <dependency>
      <groupId>org.hibernate</groupId>
      <artifactId>ejb3-persistence</artifactId>
      <version>1.0.2.GA</version>
    </dependency>
    <dependency>
      <groupId>org.javassist</groupId>
      <artifactId>javassist</artifactId>
      <version>3.15.0-GA</version>
    </dependency>
    <!-- SimpleJPA -->
    <dependency>
      <groupId>com.spaceprogram</groupId>
      <artifactId>simplejpa</artifactId>
      <version>1.5</version>
    </dependency>
  </dependencies>

<my_element xyz="ABC3"/>

<my_element xyz="ABC21,a1"/>

<p><input type="text" name="date1" id="date1" /></p>
<p><input type="text" name="date2" id="date2" /></p>

<provider>org.hibernate.ejb.HibernatePersistence</provider>
<shared-cache-mode>ENABLE_SELECTIVE</shared-cache-mode>
<properties>
  <property name="hibernate.cache.provider_class" 
    value="org.hibernate.cache.SingletonEhCacheProvider" />
  <property name="hibernate.cache.provider_configuration" value="/ehcache.xml" />
  <property name="hibernate.cache.use_second_level_cache" value="true" />
  <property name="hibernate.cache.use_query_cache" value="true" />
</properties>

  <diskStore path="user.dir/mywebapp-special-cache-folder"/>
 
  <defaultCache eternal="false" overflowToDisk="false"
    maxElementsInMemory="1000" timeToIdleSeconds="30" timeToLiveSeconds="60"/>
 
  <cache name="com.xyz.domain.EntityTwo" eternal="false" overflowToDisk="true" 
    maxElementsInMemory="1000" timeToIdleSeconds="300" timeToLiveSeconds="600"
    diskPersistent="true" diskExpiryThreadIntervalSeconds="300"/>
 
  <cache name="com.xyz.domain.EntityOne" eternal="false" overflowToDisk="true" 
    maxElementsInMemory="1000" timeToIdleSeconds="300" timeToLiveSeconds="600" 
    diskPersistent="true" diskExpiryThreadIntervalSeconds="300"/>
 
  <cache name="com.xyz.domain.EntityOne.images" eternal="false" 
    overflowToDisk="true" 
    maxElementsInMemory="1000" timeToIdleSeconds="300" timeToLiveSeconds="600" 
    diskPersistent="true" diskExpiryThreadIntervalSeconds="300"/>

<!-- there should be a way out of hardcoding the location of the properties file -->
<bean 
  class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
  <property name="location" value="/WEB-INF/spring-hes-db.properties" />
</bean>
 
<!-- ENTITY MANAGER FACTORY -->
<!-- LocalEntityManagerFactoryBean did not work for me -->
<bean id="emf-p" 
  class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
  <property name="persistenceUnitManager" ref="pum"/>
  <property name="persistenceUnitName" value="pu1"/>
  <property name="dataSource" ref="dataSource-p" />
  <property name="jpaVendorAdapter">
    <bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
      <property name="database" value="MYSQL" />
      <property name="showSql" value="true" />
      <property name="generateDdl" value="true" />
      <property name="databasePlatform" value="org.hibernate.dialect.MySQLDialect"/>
    </bean>
  </property>
</bean>
 
<!-- TRANSACTION MANAGER -->
<bean id="transactionManager" 
  class="org.springframework.orm.jpa.JpaTransactionManager">
  <property name="entityManagerFactory" ref="emf-p"/>
  <property name="dataSource" ref="dataSource-p"/>
</bean>
 
<!-- DATA SOURCES -->
<bean id="dataSource-p" 
    class="org.springframework.jdbc.datasource.DriverManagerDataSource">
  <property name="driverClassName" value="com.mysql.jdbc.Driver" />
  <property name="url" 
    value="jdbc:mysql://${db.host}:${db.port}/${db.name}"/>
  <property name="username" value="${db.username}" />
  <property name="password" value="${db.password}" />
</bean>
 
<!-- JPA TEMPLATE -->
<bean id="jpaTemplate" class="org.springframework.orm.jpa.JpaTemplate">
 <property name="entityManagerFactory" ref="emf-p" />
</bean>
 
<!-- DAOs -->
<bean id="entityOneDao" class="hes.db.impl.EntityOneDAOImpl">
  <property name="jpaTemplate" ref="jpaTemplate"/>
</bean>
 
<!-- PERSISTENCE UNIT -->
<bean id="pum" 
  class="org.springframework.orm.jpa.persistenceunit.DefaultPersistenceUnitManager">
  <property name="persistenceXmlLocations">
    <list>
      <value>META-INF/persistence.xml</value>
    </list>
  </property>
  <property name="dataSources">
    <map>
      <entry key="remoteDataSource" value-ref="dataSource-p" />
    </map>
  </property>
  <property name="defaultDataSource" ref="dataSource-p"/>
</bean>

@Entity
@Table(name = "entity1")
public class EntityOne implements Serializable {
  @Id
  @GeneratedValue(strategy = GenerationType.AUTO)
  @Column(name = "e1_id")
  private Long id;
 
  @OneToOne(fetch = FetchType.LAZY, optional = true)
  @JoinTable(name = "entity1_entity2_map",
    joinColumns = @JoinColumn(name = "e1_id"),
    inverseJoinColumns = @JoinColumn(name = "e2_id"))
  private EntityTwo anImage;
 
  //Other code
}

@Entity
@Table(name = "entity2")
public class EntityTwo implements Serializable {
  @Id
  @GeneratedValue(strategy = GenerationType.AUTO)
  @Column(name = "e2_id")
  private Long id;
 
  @OneToOne(mappedBy = "anImage", optional = true)
  private EntityOne e1;
 
  //Other code
}

    com.xyz.domain.EntityOne
    com.xyz.domain.EntityTwo
    <!-- other configurations -->