Examples of org.springframework.webflow.execution.repository.impl.DefaultFlowExecutionRepository

Package org.springframework.webflow.execution.repository.impl

Examples of org.springframework.webflow.execution.repository.impl.DefaultFlowExecutionRepository

org.springframework.webflow.execution.repository.impl.DefaultFlowExecutionRepository
The default flow execution repository implementation. Takes one to {@link #getMaxSnapshots() max} flow execution snapshots, where each snapshot represents a copy of a {@link FlowExecution} taken at a point in time.
The set of active flow executions are managed by a {@link ConversationManager} implementation, which this repositorydelegates to.
This repository is responsible for:
- Beginning a new {@link Conversation} when a {@link FlowExecution} is assigned a persistent key. Eachconversation is assigned a unique conversation id which forms one part of the flow execution key.
- Taking {@link FlowExecutionSnapshot execution snapshots} to persist flow execution state. A snapshot is a copyof the execution created at a point in time that can be restored and continued. Snapshotting supports users going back in their browser to continue their flow execution from a previoius point.
- Ending conversations when flow executions end.
This repository implementation also provides support for execution invalidation after completion, where once a logical flow execution completes, it and all of its snapshots are removed. This cleans up memory and prevents the possibility of duplicate submission after completion. @author Keith Donald

    if (conversionService == null) {
      conversionService = new DefaultConversionService();
    }
    MutableAttributeMap executionAttributes = createFlowExecutionAttributes();
    FlowExecutionImplFactory executionFactory = createFlowExecutionFactory(executionAttributes);
    DefaultFlowExecutionRepository executionRepository = createFlowExecutionRepository(executionFactory);
    executionFactory.setExecutionKeyFactory(executionRepository);
    flowExecutor = new FlowExecutorImpl(flowDefinitionLocator, executionFactory, executionRepository);
  }

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  }


  private DefaultFlowExecutionRepository createFlowExecutionRepository(FlowExecutionFactory executionFactory) {
    ConversationManager conversationManager = createConversationManager();
    FlowExecutionSnapshotFactory snapshotFactory = createFlowExecutionSnapshotFactory(executionFactory);
    DefaultFlowExecutionRepository rep = new DefaultFlowExecutionRepository(conversationManager, snapshotFactory);
    if (maxFlowExecutionSnapshots != null) {
      rep.setMaxSnapshots(maxFlowExecutionSnapshots.intValue());
    }
    return rep;
  }

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    if (conversionService == null) {
      conversionService = new DefaultConversionService();
    }
    MutableAttributeMap<Object> executionAttributes = createFlowExecutionAttributes();
    FlowExecutionImplFactory executionFactory = createFlowExecutionFactory(executionAttributes);
    DefaultFlowExecutionRepository executionRepository = createFlowExecutionRepository(executionFactory);
    executionFactory.setExecutionKeyFactory(executionRepository);
    flowExecutor = new FlowExecutorImpl(flowDefinitionLocator, executionFactory, executionRepository);
  }

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  }


  private DefaultFlowExecutionRepository createFlowExecutionRepository(FlowExecutionFactory executionFactory) {
    ConversationManager conversationManager = createConversationManager();
    FlowExecutionSnapshotFactory snapshotFactory = createFlowExecutionSnapshotFactory(executionFactory);
    DefaultFlowExecutionRepository rep = new DefaultFlowExecutionRepository(conversationManager, snapshotFactory);
    if (maxFlowExecutionSnapshots != null) {
      rep.setMaxSnapshots(maxFlowExecutionSnapshots);
    }
    return rep;
  }

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  /**
   * Create and return a {@link FlowExecutor} instance.
   */
  public FlowExecutor build() {
    FlowExecutionImplFactory executionFactory = getExecutionFactory();
    DefaultFlowExecutionRepository executionRepository = getFlowExecutionRepository(executionFactory);
    executionFactory.setExecutionKeyFactory(executionRepository);
    return new FlowExecutorImpl(this.flowRegistry, executionFactory, executionRepository);
  }

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  }


  private DefaultFlowExecutionRepository getFlowExecutionRepository(FlowExecutionFactory executionFactory) {
    ConversationManager manager = getConversationManager();
    FlowExecutionSnapshotFactory snapshotFactory = getSnapshotFactory(executionFactory);
    DefaultFlowExecutionRepository repository = new DefaultFlowExecutionRepository(manager, snapshotFactory);
    if (this.maxFlowExecutionSnapshots != null) {
      repository.setMaxSnapshots((this.maxFlowExecutionSnapshots == 0) ? 1 : this.maxFlowExecutionSnapshots);
    }
    return repository;
  }

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Related Classes of org.springframework.webflow.execution.repository.impl.DefaultFlowExecutionRepository

org.springframework.webflow.config.FlowExecutorBuilder

org.springframework.webflow.config.FlowExecutorFactoryBean

org.springframework.webflow.conversation.Conversation

org.springframework.webflow.execution.FlowExecutionKey

org.springframework.webflow.execution.repository.snapshot.FlowExecutionSnapshot

org.springframework.webflow.execution.repository.FlowExecutionRestorationFailureException

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