screen,menu,form等里面的action

以screen为例
其他类似

screen的action内容是由
ModelScreenAction负责处理的。
其他类似的还有
ModelFormAction
ModelMenuAction
ModelTreeAction

其方法
是读取每个子元素，并初始化处理方式的。
先看
property-map的处理是由 actions.add(new PropertyMap(modelScreen, actionElement));
PropertyMap负责处理的。
public static List<ModelScreenAction> readSubActions(ModelScreen modelScreen, Element parentElement) {
        List<ModelScreenAction> actions = FastList.newInstance();

        List<? extends Element> actionElementList = UtilXml.childElementList(parentElement);
        for (Element actionElement: actionElementList) {
            if ("set".equals(actionElement.getNodeName())) {
                actions.add(new SetField(modelScreen, actionElement));
            } else if ("property-map".equals(actionElement.getNodeName())) {
                actions.add(new PropertyMap(modelScreen, actionElement));
            } else if ("property-to-field".equals(actionElement.getNodeName())) {
                actions.add(new PropertyToField(modelScreen, actionElement));
            } else if ("script".equals(actionElement.getNodeName())) {
                actions.add(new Script(modelScreen, actionElement));
            } else if ("service".equals(actionElement.getNodeName())) {
                actions.add(new Service(modelScreen, actionElement));
            } else if ("entity-one".equals(actionElement.getNodeName())) {
                actions.add(new EntityOne(modelScreen, actionElement));
            } else if ("entity-and".equals(actionElement.getNodeName())) {
                actions.add(new EntityAnd(modelScreen, actionElement));
            } else if ("entity-condition".equals(actionElement.getNodeName())) {
                actions.add(new EntityCondition(modelScreen, actionElement));
            } else if ("get-related-one".equals(actionElement.getNodeName())) {
                actions.add(new GetRelatedOne(modelScreen, actionElement));
            } else if ("get-related".equals(actionElement.getNodeName())) {
                actions.add(new GetRelated(modelScreen, actionElement));
            } else {
                throw new IllegalArgumentException("Action element not supported with name: " + actionElement.getNodeName());
            }
        }

        return actions;
    }



PropertyMap 是ModelScreenAction的子类，它的实现如下

@Override
        public void runAction(Map<String, Object> context) {
            String globalStr = this.globalExdr.expandString(context);
            // default to false
            boolean global = "true".equals(globalStr);

            Locale locale = (Locale) context.get("locale");
            String resource = this.resourceExdr.expandString(context, locale);

            ResourceBundleMapWrapper existingPropMap = this.mapNameAcsr.get(context);
            if (existingPropMap == null) {
                this.mapNameAcsr.put(context, UtilProperties.getResourceBundleMap(resource, locale, context));
            } else {
                try {
                    existingPropMap.addBottomResourceBundle(resource);
                } catch (IllegalArgumentException e) {
                    // log the error, but don't let it kill everything just for a typo or bad char in an l10n file
                    Debug.logError(e, "Error adding resource bundle [" + resource + "]: " + e.toString(), module);
                }
            }

            if (global) {
                Map<String, Object> globalCtx = UtilGenerics.checkMap(context.get("globalContext"));
                if (globalCtx != null) {
                    ResourceBundleMapWrapper globalExistingPropMap = this.mapNameAcsr.get(globalCtx);
                    if (globalExistingPropMap == null) {
                        this.mapNameAcsr.put(globalCtx, UtilProperties.getResourceBundleMap(resource, locale, context));
                    } else {
                        // is it the same object? if not add it in here too...
                        if (existingPropMap != globalExistingPropMap) {
                            try {
                                globalExistingPropMap.addBottomResourceBundle(resource);
                            } catch (IllegalArgumentException e) {
                                // log the error, but don't let it kill everything just for a typo or bad char in an l10n file
                                Debug.logError(e, "Error adding resource bundle [" + resource + "]: " + e.toString(), module);
                            }
                        }
                    }
                }
            }
        }
    }

这里顺带提下
最后会调用UtilProperties的resolvePropertiesUrl方法来生成实际的资源名字。
这个方法有代码

url = FlexibleLocation.resolveLocation(resourceName + ".properties");
            if (url != null) {
                return url;
            }
            // Check for Java XML properties file
            url = FlexibleLocation.resolveLocation(resourceName + ".xml");
            if (url != null) {
                return url;
            }

可见ofbiz10.4是先查询properties文件是否存在，再检查xml文件是否存在。