如图8的IXSCAN描述符所示，通过优化器利用的索引的领先列是PRODUCT _ NUMBER，其不为合并扫描联接提供所需的顺序。

As shown in the IXSCAN descriptor in Figure 8, the leading column of the index exploited by optimizer is PRODUCT_NUMBER, which does not provide the order required for merge scan join.

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使用这一简单更改配置文件的方法(在Spring情形中，更改xml描述符)，您可以更改组件的实现方式以使用不同的索引策略。

Using this approach of simply altering a configuration file (in the Spring case, an XML descriptor), you can change the component's implementation to use a different indexing strategy.

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在第二种情况下，文档转换器和索引引擎组件及其子组件通过描述符在外部进行定义，然后使用Spring进行实例化。

In the second scenario, the document translator and indexing engine components and their subcomponents are externally defined through a descriptor and are instantiated using Spring.

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可以使用 Entity 类中的 @index注释或ObjectGrid描述符XML文件中的 HashIndex插件配置指定每个索引。

Each index can be specified using the @index annotation in an Entity class or by using the HashIndex plug-in configuration in an ObjectGrid descriptor XML file.

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您的代码获取它需要的图像描述符，然后将其添加到图像注册表，并使用键为每个图像描述符建立索引。

The idea is that your code obtains the image descriptors it needs and adds them to the image registry, indexing each one with a key.

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我设置了PDOMManager来为项目索引创建仅有的PDOMFullIndexer，所以这里不再涉及首选项和描述符。

I've set the PDOMManager to create only PDOMFullIndexers for project indexing, so there are no preferences or descriptors involved.

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我设置了PDOMManager来为项目索引创建仅有的PDOMFullIndexer，所以这里不再涉及首选项和描述符。

I've set the PDOMManager to create only PDOMFullIndexers for project indexing, so there are no preferences or descriptors involved.

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