以编程方式添加复合组件 [英] Adding composite component programmatically

问题描述

我想以编程方式将以下复合组件包括在内:

I would like to include below composite component programmatically:

<composite:interface>
    <composite:attribute name="sampleBean" />
    <composite:attribute name="autoCompleteMethod"
        method-signature="java.util.List autoCompleteMethod(java.lang.String)" />
</composite:interface>

在 Omnifaces 中，有一个功能:

// Programmatically include composite component.
Components.includeCompositeComponent(someParentComponent, libraryName, resourceName, id);

但是，我不清楚如何在获得的UIComponent实例中指定autoCompleteMethod.我该如何实现?

However, it isn't clear to me how to specify the autoCompleteMethod in the obtained UIComponent instance. How can I achieve this?

推荐答案

includeCompositeComponent()返回表示复合实现的UIComponent实例.

The includeCompositeComponent() returns an UIComponent instance representing the composite implementation.

UIComponent composite = Components.includeCompositeComponent(someParentComponent, libraryName, resourceName, id);

它的所有属性都可以被UIComponent#getAttributes()用作Map.

All of its attributes are available as a Map by UIComponent#getAttributes().

Map<String, Object> attributes = composite.getAttributes();

您可以使用

You can use Components#createMethodExpression() to create an EL method expression. Assuming that you intend to specify #{bean.complete}, here's an example:

MethodExpression autoCompleteMethod = Components.createMethodExpression("#{bean.complete}", List.class, String.class);

现在，只需将其设置为属性！

Now, just set it as attribute!

attributes.put("autoCompleteMethod", autoCompleteMethod);

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