Oracle 视图 ALL_JAVA_LAYOUTS 官方解释,作用,如何使用详细说明
本站中文解释
ALL_JAVA_LAYOUTS视图允许用户查询他们当前用户空间中被编译的Java布局(Layout)的属性。编译以后的Java布局文件由一个布局类和一个或多个字节码文件组成,字节码文件在各种数据库操作中,如 ‘CREATE SYNONYM’ 或 ‘CREATE PROCEDURE’ 时会被参考。
在使用ALL_JAVA_LAYOUTS视图时,需要查看某个Java布局的几个属性:布局 ID(表示 Java 布局的编号)、布局名称(布局类的完整名)、源语言(表示 Java 布局源代码是用 Java 编写的)以及创建日期(表示 Java 布局何时被编译)。
所以,使用例如SELECT * FROM ALL_JAVA_LAYOUTS这样的查询语句就可以得到各个Java布局的上述属性。语句可以添加条件,如 WHERE layout_name = ‘layout_name’ 来限定查询结果。
官方英文解释
ALL_JAVA_LAYOUTS
displays class layout information about the stored Java classes accessible to the current user.
Related Views
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DBA_JAVA_LAYOUTS
displays class layout information about all stored Java classes in the database. -
USER_JAVA_LAYOUTS
displays class layout information about the stored Java classes owned by the current user. This view does not display theOWNER
column.
Column | Datatype | NULL | Description |
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Owner of the Java class |
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Name of the Java class |
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Number of interfaces that this Java class implements |
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Number of inner classes that this Java class contains |
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Number of locally declared fields that this Java class contains |
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Number of locally declared static fields that this Java class contains |
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Number of locally declared methods that this Java class contains |
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Number of locally declared static methods that this Java class contains |
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Number of locally declared native methods that this Java class contains |
See Also:
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“DBA_JAVA_LAYOUTS”
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“USER_JAVA_LAYOUTS”