49 lines
1.3 KiB
Plaintext
49 lines
1.3 KiB
Plaintext
When data structures (scalar variables, collections, cursors) are declared in the package specification (not within any specific program), they can be referenced directly by any program running in a session with ``++EXECUTE++`` rights to the package.
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Instead, declare all package-level data in the package body and provide getter and setter functions in the package specification. Developers can then access the data using these methods and will automatically follow all rules you set upon data modification.
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By doing so you can guarantee data integrity, change your data structure implementation, and also track access to those data structures.
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== Noncompliant Code Example
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----
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-- Package specification
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CREATE PACKAGE employee AS
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name VARCHAR2(42); -- Non-Compliant
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END employee;
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/
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DROP PACKAGE employee;
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----
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== Compliant Solution
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----
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-- Package specification
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CREATE PACKAGE employee AS
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PROCEDURE setName (newName VARCHAR2);
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FUNCTION getName RETURN VARCHAR2;
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END employee;
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/
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-- Package body
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CREATE PACKAGE BODY employee AS
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name VARCHAR2(42);
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PROCEDURE setName (newName VARCHAR2) IS
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BEGIN
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name := newName;
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END;
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FUNCTION getName RETURN VARCHAR2 IS
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BEGIN
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RETURN name;
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END;
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END employee;
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/
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DROP PACKAGE BODY employee;
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DROP PACKAGE employee;
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----
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