Chapter 9. Appendix

9.1. Example POJO

The example POJO classes used for are: Person, Student, and Address. Below are their defintion (note that neither class implements Serializable ).

public class Person {
   String name=null;
   int age=0;
   Map hobbies=null;
   Address address=null;
   Set skills;
   List languages;

   public String getName() { return name; }
   public void setName(String name) {; }

   public int getAge() { return age; }
   public void setAge(int age) { this.age = age; }

   public Map getHobbies() { return hobbies; }
   public void setHobbies(Map hobbies) { this.hobbies = hobbies; }

   public Address getAddress() { return address; }
   public void setAddress(Address address) { this.address = address; }

   public Set getSkills() { return skills; }
   public void setSkills(Set skills) { this.skills = skills; }

   public List getLanguages() { return languages; }
   public void setLanguages(List languages) { this.languages = languages; }
public class Student extends Person {
   String year=null;

   public String getYear() { return year; }
   public void setYear(String year) { this.year=year; }
public class Address {
   String street=null;
   String city=null;
   int zip=0;

   public String getStreet() { return street; }
   public void setStreet(String street) { this.street=street; }

9.2. Sample configuration xml

Below is a sample xml configuration for PojoCache. Today, it uses the same configuration option as that of TreeCache super-class except the MBean service class (if you are deploying it under JBoss).

<?xml version="1.0" encoding="UTF-8" ?>

<mbean code="org.jboss.cache.aop.PojoCache" name="jboss.cache:service=PojoCache">

<!--         Configure the TransactionManager -->
<attribute name="TransactionManagerLookupClass">org.jboss.cache.DummyTransactionManagerLookup</attribute>

<!--             Isolation level : SERIALIZABLE
                            REPEATABLE_READ (default)
<attribute name="IsolationLevel">REPEATABLE_READ</attribute>

<!--              Valid modes are LOCAL, REPL_ASYNC and REPL_SYNC -->
<attribute name="CacheMode">REPL_SYNC</attribute>

<!--         Just used for async repl: use a replication queue -->
<attribute name="UseReplQueue">false</attribute>

<!--             Replication interval for replication queue (in ms) -->
<attribute name="ReplQueueInterval">0</attribute>

<!--             Max number of elements which trigger replication -->
<attribute name="ReplQueueMaxElements">0</attribute>

<!--  Name of cluster. Needs to be the same for all clusters, in order
           to find each other
<attribute name="ClusterName">TreeCache-Cluster</attribute>

<!--  JGroups protocol stack properties. Can also be a URL,
           e.g. file:/home/bela/default.xml
         <attribute name="ClusterProperties"></attribute>
<attribute name="ClusterConfig">

<!--  UDP: if you have a multihomed machine,
              set the bind_addr attribute to the appropriate NIC IP address, e.g bind_addr=""
<!--  UDP: On Windows machines, because of the media sense feature
               being broken with multicast (even after disabling media sense)
               set the loopback attribute to true
<UDP mcast_addr="" mcast_port="48866" ip_ttl="64" ip_mcast="true" mcast_send_buf_size="150000" mcast_recv_buf_size="80000" ucast_send_buf_size="150000" ucast_recv_buf_size="80000" loopback="false" />
<PING timeout="2000" num_initial_members="3" up_thread="false" down_thread="false" />
<MERGE2 min_interval="10000" max_interval="20000" />
<VERIFY_SUSPECT timeout="1500" up_thread="false" down_thread="false" />
<pbcast.NAKACK gc_lag="50" retransmit_timeout="600,1200,2400,4800" max_xmit_size="8192" up_thread="false" down_thread="false" />
<UNICAST timeout="600,1200,2400" window_size="100" min_threshold="10" down_thread="false" />
<pbcast.STABLE desired_avg_gossip="20000" up_thread="false" down_thread="false" />
<FRAG frag_size="8192" down_thread="false" up_thread="false" />
<pbcast.GMS join_timeout="5000" join_retry_timeout="2000" shun="true" print_local_addr="true" />
<pbcast.STATE_TRANSFER up_thread="true" down_thread="true" />

<!--         Whether or not to fetch state on joining a cluster -->
<attribute name="FetchStateOnStartup">true</attribute>

<!--             The max amount of time (in milliseconds) we wait until the
            initial state (ie. the contents of the cache) are retrieved from
            existing members in a clustered environment

<attribute name="InitialStateRetrievalTimeout">5000</attribute>

<!--             Number of milliseconds to wait until all responses for a
            synchronous call have been received.
<attribute name="SyncReplTimeout">15000</attribute>

<!--  Max number of milliseconds to wait for a lock acquisition -->
<attribute name="LockAcquisitionTimeout">10000</attribute>

<!--  Name of the eviction policy class. -->
<attribute name="EvictionPolicyClass" />