我正在研究 OFBiz 框架，我有一个问题。

我找到了一个创建数据资源的服务。（应用程序/内容/src/main/java/org/apache/ofbiz/内容/数据/DataServices.java）

但是我找不到定义数据资源实体的位置。通常，实体是在entitydef目录下的entitymodel. xml文件中定义的。但是，内容应用程序没有entitymodel.xml文件。只有eecas.xml文件。

目录树

<entity-eca xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:noNamespaceSchemaLocation="http://ofbiz.apache.org/dtds/entity-eca.xsd">

<!-- If the text in the database has changed for the data resource, we need to clear out anything depending on this cached value -->
<eca entity="ElectronicText" operation="store-remove" event="return">
    <action service="clearAssociatedRenderCache" mode="sync" />
</eca>

<!-- Content Keyword Indexing ECAs -->
<eca entity="Content" operation="create" event="return">
    <action service="indexContentKeywords" mode="sync" value-attr="contentInstance"/>
</eca>
<eca entity="Content" operation="store" event="return">
    <action service="indexContentKeywords" mode="sync"/>
</eca>
<eca entity="ContentAttribute" operation="create-store" event="return">
    <action service="indexContentKeywords" mode="sync"/>
</eca>
<eca entity="ContentMetaData" operation="create-store" event="return">
    <action service="indexContentKeywords" mode="sync"/>
</eca>
<eca entity="ContentRole" operation="create-store" event="return">
    <action service="indexContentKeywords" mode="sync"/>
</eca>
<eca entity="ProductContent" operation="create-store" event="return">
    <action service="indexContentKeywords" mode="sync"/>
</eca>
<eca entity="ProductCategoryContent" operation="create-store" event="return">
    <action service="indexContentKeywords" mode="sync"/>
</eca>
<eca entity="PartyContent" operation="create-store" event="return">
    <action service="indexContentKeywords" mode="sync"/>
</eca>
<eca entity="WebSiteContent" operation="create-store" event="return">
    <action service="indexContentKeywords" mode="sync"/>
</eca>
<eca entity="WorkEffortContent" operation="create-store" event="return">
    <action service="indexContentKeywords" mode="sync"/>
</eca>

而这个 eecas.xml 文件似乎与数据资源无关。它是一个明确存在的实体，但它到底在哪里定义？如果您能给我答案，我将不胜感激。