流程
当您使用流程组件构建涉及多个组件的应用时,您的实现可能会变得有些混乱。为了简化这些用例,我们添加了一个ComponentFlow
,它可以将多个组件的执行链接在一起作为一个“流程”。
以下列表显示了 shell 中流程及其输出的示例
static class FlowSampleComplex {
@Autowired
private ComponentFlow.Builder componentFlowBuilder;
public void runFlow() {
List<SelectItem> single1SelectItems = Arrays.asList(SelectItem.of("key1", "value1"),
SelectItem.of("key2", "value2"));
List<SelectItem> multi1SelectItems = Arrays.asList(SelectItem.of("key1", "value1"),
SelectItem.of("key2", "value2"), SelectItem.of("key3", "value3"));
ComponentFlow flow = componentFlowBuilder.clone().reset()
.withStringInput("field1")
.name("Field1")
.defaultValue("defaultField1Value")
.and()
.withStringInput("field2")
.name("Field2")
.and()
.withConfirmationInput("confirmation1")
.name("Confirmation1")
.and()
.withPathInput("path1")
.name("Path1")
.and()
.withSingleItemSelector("single1")
.name("Single1")
.selectItems(single1SelectItems)
.and()
.withMultiItemSelector("multi1")
.name("Multi1")
.selectItems(multi1SelectItems)
.and()
.build();
flow.run();
}
}
组件的正常执行顺序与构建器中定义的顺序相同。可以通过使用next
函数并返回目标组件ID来有条件地选择在流程中跳转到哪里。如果返回的 ID 为null 或不存在,则流程基本上会在那里停止。
static class FlowSampleConditional {
@Autowired
private ComponentFlow.Builder componentFlowBuilder;
public void runFlow() {
Map<String, String> single1SelectItems = new HashMap<>();
single1SelectItems.put("Field1", "field1");
single1SelectItems.put("Field2", "field2");
ComponentFlow flow = componentFlowBuilder.clone().reset()
.withSingleItemSelector("single1")
.name("Single1")
.selectItems(single1SelectItems)
.next(ctx -> ctx.getResultItem().get().getItem())
.and()
.withStringInput("field1")
.name("Field1")
.defaultValue("defaultField1Value")
.next(ctx -> null)
.and()
.withStringInput("field2")
.name("Field2")
.defaultValue("defaultField2Value")
.next(ctx -> null)
.and()
.build();
flow.run();
}
}
运行流程的结果返回ComponentFlowResult ,您可以使用它来执行进一步的操作。 |