Oracle Coherence初啼

Oracle Coherence初啼

     昨天写了个Coherence的小例子，使用了Oracle Enterprise Pack for Eclipse，直接用它创建了一个ADF项目，连带创建了JPA项目，在Configuration里添加了Coherence，这样就有了配套的jar包了。
     Coherence利用多播自动组成集群，类可以不实现序列化接口，这是一个简单的例子：

public  class Cat  {
 
     private String name;
     private  int age;
     private String sex;
      

     public Cat() {
         super();

    }

     public Cat(String name,  int age, String sex) {
         super();
         this.name = name;
         this.age = age;
         this.sex = sex;
    }

服务类：

public   class  CatService {
 

     public  Cat getCat(String name){
        NamedCache cache  =  CacheFactory.getCache( " AnimalCache " );
        Cat cat  =  (Cat) cache.get(name);
         if (cat == null ){
             long  age  =  Math.round(Math.random()  *   10 ) + 5 ;
            cat  =   new  Cat(name,( int ) age, " male " );
            cache.put(name, cat);
        }
         return  cat;
    }
}

测试：
 

public   class  CatServiceTest {
    CatService catService = new  CatService();
    @Before
     public   void  setUp()  throws  Exception {
        CacheFactory.ensureCluster();
    }

    @After
     public   void  tearDown()  throws  Exception {
        CacheFactory.shutdown(); 
    }

    @Test
     public   void  test() {
        Cat tomCat = catService.getCat( " tom " );
        Cat tomCatFromCache = catService.getCat( " tom " );
        System.out.println(tomCat);
        assertEquals(tomCat, tomCatFromCache);
    }

}

   Coherence推荐采用pof作为Serializer，这样不需要实现序列化接口，而且性能非常高，需要做以下几件事实现这个：
    1 创建Serializer类：
    

public   class  CatSerializer  implements  PofSerializer {

    @Override
     public  Object deserialize(PofReader pofReader)  throws  IOException {
         String sName = pofReader.readString( 0 );
         Cat cat = new  Cat();
         cat.setName(sName);
         pofReader.registerIdentity(cat);
         cat.setAge(pofReader.readInt( 1 ));
         cat.setSex(pofReader.readString( 2 ));
         pofReader.readRemainder();
         return  cat;
    }

    @Override
     public   void  serialize(PofWriter pofWriter, Object object)  throws  IOException {
         Cat cat = (Cat)object;
         pofWriter.writeString( 0 ,cat.getName());
         pofWriter.writeInt( 1 , cat.getAge());
         pofWriter.writeString( 2 , cat.getSex());
         pofWriter.writeRemainder( null );
    }

}

    2 创建一个coherence-config文件，指定serializer，共有三个级别的指定，针对特定service，针对所有service，针对jvm，下面是针对所有service。
  

< cache-config  xmlns:xsi ="http://www.w3.org/2001/XMLSchema-instance"
    xmlns ="http://xmlns.oracle.com/coherence/coherence-cache-config"
    xsi:schemaLocation ="http://xmlns.oracle.com/coherence/coherence-cache-config http://xmlns.oracle.com/coherence/coherence-cache-config/1.1/coherence-cache-config.xsd" >
     <!--  The defaults element defines factory-wide default settings.  -->
     < defaults >
         <!--  Note: This element defines the default serializer for all services 
            defined within this cache configuration descriptor. Valid values include 
            full serializer definitions, as well as named references to serializers defined 
            within the "serializers" element of the operational configuration. Example 
            values include: java, pof. Default value is java.  -->
         <!-- <serializer system-property="tangosol.coherence.serializer" /> -->
         < serializer >
                 < instance >
                     < class-name > com.tangosol.io.pof.ConfigurablePofContext </ class-name >
                     < init-params >
                         < init-param >
                             < param-type > String </ param-type >
                             < param-value > custom-pof-config.xml </ param-value >
                         </ init-param >
                     </ init-params >
                 </ instance >
             </ serializer >

   3 编写custom-pof-config.xml，注册serializer：
    

<? xml version="1.0" ?>
< pof-config  xmlns:xsi ="http://www.w3.org/2001/XMLSchema-instance"
    xmlns ="http://xmlns.oracle.com/coherence/coherence-pof-config"
    xsi:schemaLocation ="http://xmlns.oracle.com/coherence/coherence-pof-config http://xmlns.oracle.com/coherence/coherence-pof-config/1.1/coherence-pof-config.xsd" >
     < user-type-list >
         <!--  include all "standard" Coherence POF user types  -->
         < include > coherence-pof-config.xml </ include >
         < user-type >
             < type-id > 1001 </ type-id >
             < class-name > org.jport.coherence.demo.Cat </ class-name >
             < serializer >
                 < class-name > org.jport.coherence.demo.CatSerializer </ class-name >
             </ serializer >
         </ user-type >

     </ user-type-list >
</ pof-config >

   4 指定这个自定义的coherence-config.xml，在jvm启动参数里：
    

-Dtangosol.coherence.cacheconfig = C:\workspace\AdfprjModel\src\custom-coherence-cache-config.xml

      由于我是用JUnit进行测试，因此就是把这个写在run junit的configuration里了。
   
   如果属性是引用了其他的类也没问题：
   

public   class  Cat  {
 
     private  String name;
     private   int  age;
     private  String sex;
     private  Owner owner;

public   class  Owner {
     private  String name;
     private  String phoneNumber;

     public  Owner(String name, String phoneNumber) {
         super ();
         this .name  =  name;
         this .phoneNumber  =  phoneNumber;
    }

   创建Owner的Serializer：
   

public   class  OwnerSerializer  implements  PofSerializer {

    @Override
     public  Object deserialize(PofReader pofReader)  throws  IOException {
         String sName = pofReader.readString( 0 );
         Owner owner = new  Owner();
         owner.setName(sName);
         pofReader.registerIdentity(owner);
         owner.setPhoneNumber(pofReader.readString( 1 ));
         
         pofReader.readRemainder();
         return  owner;
    }

    @Override
     public   void  serialize(PofWriter pofWriter, Object object)  throws  IOException {
        Owner owner = (Owner)object;
         pofWriter.writeString( 0 ,owner.getName());         
         pofWriter.writeString( 1 , owner.getPhoneNumber());
         pofWriter.writeRemainder( null );
    }

}

  修改Cat的Serializer：
  

public   class  CatSerializer  implements  PofSerializer {

    @Override
     public  Object deserialize(PofReader pofReader)  throws  IOException {
         String sName = pofReader.readString( 0 );
         Cat cat = new  Cat();
         cat.setName(sName);
         pofReader.registerIdentity(cat);
         cat.setAge(pofReader.readInt( 1 ));
         cat.setSex(pofReader.readString( 2 ));
          cat.setOwner((Owner) pofReader.readObject( 3 ));        
         pofReader.readRemainder();
return  cat;
    }

    @Override
     public   void  serialize(PofWriter pofWriter, Object object)  throws  IOException {
         Cat cat = (Cat)object;
         pofWriter.writeString( 0 ,cat.getName());
         pofWriter.writeInt( 1 , cat.getAge());
         pofWriter.writeString( 2 , cat.getSex());
          pofWriter.writeObject( 3 , cat.getOwner());
         pofWriter.writeRemainder( null );
    }

}

 
 然后在pof配置中新增该类型：
  

     < user-type >
             < type-id > 1002 </ type-id >
             < class-name > org.jport.coherence.demo.Owner </ class-name >
             < serializer >
                 < class-name > org.jport.coherence.demo.OwnerSerializer </ class-name >
             </ serializer >
         </ user-type >

   引用集合类：
  

public   class  Cat  {
 
     private  String name;
     private   int  age;
     private  String sex;
     private  Owner owner;
     private  List < Cat >  childrenCats;

  
   修改Cat服务类：
   

     public  Cat getCat(String name){
        NamedCache cache  =  CacheFactory.getCache( " AnimalCache " );
        Cat cat  =  (Cat) cache.get(name);
         if (cat == null ){
             int  age  = ( int ) Math.round(Math.random()  *   10 ) + 5 ;
            cat  =   new  Cat(name,  age, " male " );
            Owner owner  =   new  Owner( " sslaowan " , " 1212554525 " );
            cat.setOwner(owner);
            List < Cat >  childrenCats = new  ArrayList < Cat > ();
            Cat child1  =   new  Cat( " tt " ,age - 3 , " female " );
            child1.setOwner(owner);         
            Cat child2  =   new  Cat( " mm " ,age - 3 , " female " );
            child2.setOwner(owner);
            childrenCats.add(child1);
            childrenCats.add(child2);
            cat.setChildrenCats(childrenCats);
            cache.put(name, cat);
        }
         return  cat;
    }

     修改Serializer：
     

public   class  CatSerializer  implements  PofSerializer {

    @Override
     public  Object deserialize(PofReader pofReader)  throws  IOException {
         String sName = pofReader.readString( 0 );
         Cat cat = new  Cat();
         cat.setName(sName);
         pofReader.registerIdentity(cat);
         cat.setAge(pofReader.readInt( 1 ));
         cat.setSex(pofReader.readString( 2 ));
         cat.setOwner((Owner) pofReader.readObject( 3 ));
          cat.setChildrenCats((List < Cat > ) pofReader.readCollection( 4 ,  new  ArrayList < Cat > ()));        
         pofReader.readRemainder();
        return  cat;
    }

    @Override
     public   void  serialize(PofWriter pofWriter, Object object)  throws  IOException {
         Cat cat = (Cat)object;
         pofWriter.writeString( 0 ,cat.getName());
         pofWriter.writeInt( 1 , cat.getAge());
         pofWriter.writeString( 2 , cat.getSex());
         pofWriter.writeObject( 3 , cat.getOwner());
          pofWriter.writeCollection( 4 , cat.getChildrenCats(), Cat. class );
         pofWriter.writeRemainder( null );
    }

}

      测试结果如下：
   

Cat  [ name=tom, age=6, sex=male, owner=Owner [name=sslaowan, phoneNumber=1212554525 ] ,
    childrenCats = [ Cat [name=tt, age=3, sex=female, owner=Owner [name=sslaowan, phoneNumber=1212554525 ] ,  childrenCats = null] ,
                       Cat  [ name=mm, age=3, sex=female, owner=Owner [name=sslaowan, phoneNumber=1212554525 ] ,  childrenCats = null]]]

    运行多个节点加入集群，可以让JUnit测试
    

Group{Address = 224.3.7.0 ,  Port = 37000 ,  TTL = 4 }

MasterMemberSet(
  ThisMember = Member(Id = 4 ,  Timestamp = 2012 - 05 - 23   17 : 44 : 27.749 ,  Address = 192.168.56.1 : 8094 ,  MachineId = 14169 ,  Location = site: , machine:wanxing-PC , process: 12444 ,  Role = EclipseJdtRemoteTestRunner)
  OldestMember = Member(Id = 1 ,  Timestamp = 2012 - 05 - 23   17 : 35 : 23.01 ,  Address = 192.168.56.1 : 8088 ,  MachineId = 14169 ,  Location = site: , machine:wanxing-PC , process: 14536 ,  Role = EclipseJdtRemoteTestRunner)
  ActualMemberSet = MemberSet(Size = 4
    Member(Id = 1 ,  Timestamp = 2012 - 05 - 23   17 : 35 : 23.01 ,  Address = 192.168.56.1 : 8088 ,  MachineId = 14169 ,  Location = site: , machine:wanxing-PC , process: 14536 ,  Role = EclipseJdtRemoteTestRunner)
    Member(Id = 2 ,  Timestamp = 2012 - 05 - 23   17 : 35 : 28.781 ,  Address = 192.168.56.1 : 8090 ,  MachineId = 14169 ,  Location = site: , machine:wanxing-PC , process: 13692 ,  Role = EclipseJdtRemoteTestRunner)
    Member(Id = 3 ,  Timestamp = 2012 - 05 - 23   17 : 36 : 06.641 ,  Address = 192.168.56.1 : 8092 ,  MachineId = 14169 ,  Location = site: , machine:wanxing-PC , process: 14964 ,  Role = EclipseJdtRemoteTestRunner)
    Member(Id = 4 ,  Timestamp = 2012 - 05 - 23   17 : 44 : 27.749 ,  Address = 192.168.56.1 : 8094 ,  MachineId = 14169 ,  Location = site: , machine:wanxing-PC , process: 12444 ,  Role = EclipseJdtRemoteTestRunner)
    )
  MemberId|ServiceVersion|ServiceJoined|MemberState
     1 | 3.7.1 | 2012 - 05 - 23   17 : 35 : 23.01 |JOINED ,
     2 | 3.7.1 | 2012 - 05 - 23   17 : 35 : 28.781 |JOINED ,
     3 | 3.7.1 | 2012 - 05 - 23   17 : 36 : 06.641 |JOINED ,
     4 | 3.7.1 | 2012 - 05 - 23   17 : 44 : 27.769 |JOINED
  RecycleMillis = 1200000
  RecycleSet = MemberSet(Size = 0
    )
  )

TcpRing{Connections = [ 3 ] }
IpMonitor{AddressListSize = 0 }

关于pof的更多内容看这个：

http://docs.oracle.com/cd/E15357_01/coh.360/e15723/api_pof.htm#BABFHCGE