Examples of org.springframework.webflow.engine.builder.FlowBuilder

Package org.springframework.webflow.engine.builder

Examples of org.springframework.webflow.engine.builder.FlowBuilder

org.springframework.webflow.engine.builder.FlowBuilder
Builder interface used to build a flow definition. The process of building a flow consists of the following steps:
1. Initialize this builder, creating the initial flow definition, by calling {@link #init(FlowBuilderContext)}.
2. Call {@link #buildVariables()} to create any variables of the flow and add them to the flow definition.
3. Call {@link #buildInputMapper()} to create and set the input mapper for the flow.
4. Call {@link #buildStartActions()} to create and add any start actions to the flow.
5. Call {@link #buildStates()} to create the states of the flow and add them to the flow definition.
6. Call {@link #buildGlobalTransitions()} to create any transitions shared by all states of the flow and add them tothe flow definition.
7. Call {@link #buildEndActions()} to create and add any end actions to the flow.
8. Call {@link #buildOutputMapper()} to create and set the output mapper for the flow.
9. Call {@link #buildExceptionHandlers()} to create the exception handlers of the flow and add them to the flowdefinition.
10. Call {@link #getFlow()} to return the fully-built {@link Flow} definition.
11. Dispose this builder, releasing any resources allocated during the building process by calling {@link #dispose()}.
Implementations should encapsulate flow construction logic, either for a specific kind of flow, for example, an OrderFlowBuilder built in Java code, or a generic flow builder strategy, like the XmlFlowBuilder, for building flows from an XML-definition.
Flow builders are used by the {@link FlowAssembler}, which acts as an assembler (director). Flow Builders may be reused, however, exercise caution when doing this as these objects are not thread safe. Also, for each use be sure to call init, followed by the build* methods, getFlow, and dispose completely in that order.
This is a good example of the classic GoF builder pattern. @see Flow @see FlowBuilderContext @see FlowAssembler @author Keith Donald @author Erwin Vervaet

      // expected
    }
  }


  public void testStateExceptionHandlingExceptionInEndState() {
    FlowBuilder builder = new AbstractFlowBuilder() {
      public void buildStates() throws FlowBuilderException {
        State state = new EndState(getFlow(), "end");
        state.getEntryActionList().add(new AbstractAction() {
          protected Event doExecute(RequestContext context) throws Exception {
            throw new NullPointerException("failing");

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   */
  protected final Flow buildFlow() {
    FlowDefinitionResource resource = getResource(getResourceFactory());
    flowBuilderContext = new MockFlowBuilderContext(resource.getId(), resource.getAttributes());
    configureFlowBuilderContext(flowBuilderContext);
    FlowBuilder builder = createFlowBuilder(resource);
    FlowAssembler assembler = new FlowAssembler(builder, flowBuilderContext);
    return assembler.assembleFlow();
  }

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      }
    }
  }


  private FlowDefinitionHolder createFlowDefinitionHolder(FlowDefinitionResource flowResource) {
    FlowBuilder builder = createFlowBuilder(flowResource);
    FlowBuilderContext builderContext = new FlowBuilderContextImpl(flowResource.getId(), flowResource
        .getAttributes(), flowRegistry, flowBuilderServices);
    FlowAssembler assembler = new FlowAssembler(builder, builderContext);
    return new DefaultFlowHolder(assembler);
  }

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  }


  private FlowDefinition buildFlowDefinition(FlowBuilderInfo builderInfo) {
    try {
      Class flowBuilderClass = loadClass(builderInfo.getClassName());
      FlowBuilder builder = (FlowBuilder) flowBuilderClass.newInstance();
      AttributeMap flowAttributes = getFlowAttributes(builderInfo.getAttributes());
      FlowBuilderContext builderContext = new FlowBuilderContextImpl(builderInfo.getId(), flowAttributes,
          flowRegistry, flowBuilderServices);
      FlowAssembler assembler = new FlowAssembler(builder, builderContext);
      return assembler.assembleFlow();

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      // expected
    }
  }


  public void testStateExceptionHandlingExceptionInEndState() {
    FlowBuilder builder = new AbstractFlowBuilder() {
      public void buildStates() throws FlowBuilderException {
        State state = new EndState(getFlow(), "end");
        state.getEntryActionList().add(new AbstractAction() {
          protected Event doExecute(RequestContext context) throws Exception {
            throw new NullPointerException("failing");

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   */
  protected final Flow buildFlow() {
    FlowDefinitionResource resource = getResource(getResourceFactory());
    flowBuilderContext = new MockFlowBuilderContext(resource.getId(), resource.getAttributes());
    configureFlowBuilderContext(flowBuilderContext);
    FlowBuilder builder = createFlowBuilder(resource);
    FlowAssembler assembler = new FlowAssembler(builder, flowBuilderContext);
    return assembler.assembleFlow();
  }

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      }
    }
  }


  private FlowDefinitionHolder createFlowDefinitionHolder(FlowDefinitionResource flowResource) {
    FlowBuilder builder = createFlowBuilder(flowResource);
    FlowBuilderContext builderContext = new FlowBuilderContextImpl(flowResource.getId(),
        flowResource.getAttributes(), flowRegistry, flowBuilderServices);
    FlowAssembler assembler = new FlowAssembler(builder, builderContext);
    return new DefaultFlowHolder(assembler);
  }

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  }


  private FlowDefinition buildFlowDefinition(FlowBuilderInfo builderInfo) {
    try {
      Class<?> flowBuilderClass = loadClass(builderInfo.getClassName());
      FlowBuilder builder = (FlowBuilder) flowBuilderClass.newInstance();
      AttributeMap<Object> flowAttributes = getFlowAttributes(builderInfo.getAttributes());
      FlowBuilderContext builderContext = new FlowBuilderContextImpl(builderInfo.getId(), flowAttributes,
          flowRegistry, flowBuilderServices);
      FlowAssembler assembler = new FlowAssembler(builder, builderContext);
      return assembler.assembleFlow();

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    } else {
      throw new IllegalArgumentException(resource
          + " is not a supported resource type; supported types are [.xml]");
    }
    FlowModelHolder flowModelHolder = new DefaultFlowModelHolder(flowModelBuilder);
    FlowBuilder flowBuilder = new FlowModelFlowBuilder(flowModelHolder);
    FlowBuilderContext builderContext = new FlowBuilderContextImpl(
        resource.getId(), resource.getAttributes(), flowRegistry, this.flowBuilderServices);
    FlowAssembler assembler = new FlowAssembler(flowBuilder, builderContext);
    DefaultFlowHolder flowHolder = new DefaultFlowHolder(assembler);

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Related Classes of org.springframework.webflow.engine.builder.FlowBuilder

org.springframework.webflow.config.FlowDefinitionRegistryBuilder

org.springframework.webflow.config.FlowRegistryFactoryBean

org.springframework.webflow.engine.support.TransitionExecutingFlowExecutionExceptionHandlerTests

org.springframework.webflow.test.execution.AbstractExternalizedFlowExecutionTests

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