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

  • 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 the OWNER column.

Column Datatype NULL Description

OWNER

VARCHAR2(128)

NOT NULL

Owner of the Java class

NAME

VARCHAR2(4000)

Name of the Java class

INTERFACES

NUMBER

Number of interfaces that this Java class implements

INNER_CLASSES

NUMBER

Number of inner classes that this Java class contains

FIELDS

NUMBER

Number of locally declared fields that this Java class contains

STATIC_FIELDS

NUMBER

Number of locally declared static fields that this Java class contains

METHODS

NUMBER

Number of locally declared methods that this Java class contains

STATIC_METHODS

NUMBER

Number of locally declared static methods that this Java class contains

NATIVE_METHODS

NUMBER

Number of locally declared native methods that this Java class contains

See Also:

  • “DBA_JAVA_LAYOUTS”

  • “USER_JAVA_LAYOUTS”


数据运维技术 » Oracle 视图 ALL_JAVA_LAYOUTS 官方解释,作用,如何使用详细说明