Java HandlesEvent.value方法代码示例

import net.sourceforge.stripes.action.HandlesEvent; //导入方法依赖的package包/类
/**
 * Ensure the default event name is set if the binding uses the $event parameter.
 * Can only be done safely after the event mappings have been processed.
 * see http://www.stripesframework.org/jira/browse/STS-803
 */
void initDefaultValueWithDefaultHandlerIfNeeded(ActionResolver actionResolver) {
    if (PARAMETER_NAME_EVENT.equals(name)) {
        Method defaultHandler;
        try {
            defaultHandler = actionResolver.getDefaultHandler(beanClass);
        } catch (StripesServletException e) {
            throw new StripesRuntimeException("Caught an exception trying to get default handler for ActionBean '" + beanClass.getName() +
                    "'. Make sure this ActionBean has a default handler.", e);
        }
        HandlesEvent annotation = defaultHandler.getAnnotation(HandlesEvent.class);
        if (annotation != null) {
            this.defaultValue = annotation.value();
        } else {
            this.defaultValue = defaultHandler.getName();
        }
    }
}
 

import net.sourceforge.stripes.action.HandlesEvent; //导入方法依赖的package包/类
/**
 * Get the parameter's default value, which may be null.
 * 
 * @return the default value
 */
public String getDefaultValue() {
    // for $event parameters with no explicit default value, get default from action resolver
    if (this.defaultValue == null && PARAMETER_NAME_EVENT.equals(name)) {
        try {
            Method defaultHandler = StripesFilter.getConfiguration().getActionResolver()
                    .getDefaultHandler(beanClass);
            HandlesEvent annotation = defaultHandler.getAnnotation(HandlesEvent.class);
            if (annotation != null)
                this.defaultValue = annotation.value();
            else
                this.defaultValue = defaultHandler.getName();
        }
        catch (Exception e) {
            /* Ignore any exceptions and just return null. */
        }
    }

    return defaultValue;
}
 

import net.sourceforge.stripes.action.HandlesEvent; //导入方法依赖的package包/类
/**
 * Responsible for determining the name of the event handled by this method, if indeed
 * it handles one at all.  By default looks for the HandlesEvent annotations and returns
 * it's value if present.
 *
 * @param handler a method that might or might not be a handler method
 * @return the name of the event handled, or null
 */
public String getHandledEvent(Method handler) {
    HandlesEvent mapping = handler.getAnnotation(HandlesEvent.class);
    if (mapping != null) {
        return mapping.value();
    }
    else {
        return null;
    }
}
 

import net.sourceforge.stripes.action.HandlesEvent; //导入方法依赖的package包/类
/**
 * Responsible for determining the name of the event handled by this method,
 * if indeed it handles one at all. By default looks for the HandlesEvent
 * annotations and returns it's value if present.
 * 
 * @param handler
 *            a method that might or might not be a handler method
 * @return the name of the event handled, or null
 */
public String getHandledEvent(Method handler) {
    HandlesEvent mapping = handler.getAnnotation(HandlesEvent.class);
    if (mapping != null) {
        return mapping.value();
    } else {
        return null;
    }
}