Red Hat Summit Red Hat SummitSuporteConsoleDesenvolvedoresComeçar um testeContato

Este conteúdo não está disponível no idioma selecionado.

9.2.7. Example

The simple example below illustrates the relationships between activation, termination and commitment:

Example 9.4. Relationships Between Activation, Termination, and Commitment

{
      . . .
      O1 objct1 = new objct1(Name-A);/* (i) bind to "old" persistent object A */
      O2 objct2 = new objct2();	 /* create a "new" persistent object */
      OTS.current().begin();		 /* (ii) start of atomic action */
      
      objct1.op(...);		      /* (iii) object activation and invocations */
      objct2.op(...);
      . . .
      OTS.current().commit(true); 	/* (iv) tx commits & objects deactivated */
      } 					/* (v) */
Copy to Clipboard Toggle word wrap
The execution of the above code involves the following sequence of activities:
  1. Creation of bindings to persistent objects. This might involve the creation of stub objects and a call to remote objects. The above example re-binds to an existing persistent object identified by Name-A, and a new persistent object. A naming system for remote objects maintains the mapping between object names and locations and is described in a later chapter.
  2. Start of the atomic transaction.
  3. Operation invocations. As a part of a given invocation, the object implementation ensures that it is locked in read or write mode, assuming no lock conflict, and initialized, if necessary, with the latest committed state from the object store. The first time a lock is acquired on an object within a transaction, the object’s state is also acquired from the object store.
  4. Commit of the top-level action. This includes updating the state of any modified objects in the object store.
  5. Breaking of the previously created bindings.
Voltar ao topo
Red Hat logoGithubredditYoutubeTwitter

Aprender

Experimente, compre e venda

Comunidades

Sobre a documentação da Red Hat

Ajudamos os usuários da Red Hat a inovar e atingir seus objetivos com nossos produtos e serviços com conteúdo em que podem confiar. Explore nossas atualizações recentes.

Tornando o open source mais inclusivo

A Red Hat está comprometida em substituir a linguagem problemática em nosso código, documentação e propriedades da web. Para mais detalhes veja o Blog da Red Hat.

Sobre a Red Hat

Fornecemos soluções robustas que facilitam o trabalho das empresas em plataformas e ambientes, desde o data center principal até a borda da rede.

Theme

© 2025 Red Hat