Difference between revisions of "Zh/Documentation/DevGuide/ProUNO/Java/Mapping of Singletons"
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Latest revision as of 02:46, 14 May 2009
以下形式的新式 singleton
singleton Name: XIfc;
被映射成同名的公共 Java 类。该类有单一方法
public static XIfc get(com.sun.star.uno.XComponentContext context) { ... }
在 Java 中，这种 singleton getter 方法的语义如下：
- singleton getter 使用 com.sun.star.uno.XComponentContext:getValueByName 获取 singleton 实例（在 “
/singletons/” 命名空间内）。 - 如果未获取 singleton 实例，则 singleton getter 会抛出 com.sun.star.uno.DeploymentException 并以失败告终。实际结果是 singleton getter 或者返回所请求服务的 singleton 非空实例，或者抛出异常；singleton getter 决不会返回空实例。
没有将旧式 singleton 映射成 Java 语言绑定
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