Creating Object Types : Object Type « Object Oriented « Oracle PL/SQL Tutorial

Oracle PL/SQL Tutorial

1.	Introduction
2.	Query Select
3.	Set
4.	Insert Update Delete
5.	Sequences
6.	Table
7.	Table Joins
8.	View
9.	Index
10.	SQL Data Types
11.	Character String Functions
12.	Aggregate Functions
13.	Date Timestamp Functions
14.	Numerical Math Functions
15.	Conversion Functions
16.	Analytical Functions
17.	Miscellaneous Functions
18.	Regular Expressions Functions
19.	Statistical Functions
20.	Linear Regression Functions
21.	PL SQL Data Types
22.	PL SQL Statements
23.	PL SQL Operators
24.	PL SQL Programming
25.	Cursor
26.	Collections
27.	Function Procedure Packages
28.	Trigger
29.	SQL PLUS Session Environment
30.	System Tables Data Dictionary
31.	System Packages
32.	Object Oriented
33.	XML
34.	Large Objects
35.	Transaction
36.	User Privilege

Java

Java Tutorial

Java Source Code / Java Documentation

Illustrator Tutorials

GIMP Tutorials

C# / C Sharp

C# / CSharp Tutorial

C# / CSharp Open Source

SQL Server / T-SQL Tutorial

Flash / Flex / ActionScript

VBA / Excel / Access / Word

XML

XML Tutorial

Microsoft Office PowerPoint 2007 Tutorial

Microsoft Office Excel 2007 Tutorial

Microsoft Office Word 2007 Tutorial

Oracle PL/SQL Tutorial » Object Oriented » Object Type

32. 1. 1. Creating Object Types

Classes define attributes and methods.

Attributes are used to store an object's state, and methods are used to model an object's behaviors.

You create an object type using the CREATE [OR REPLACE] TYPE statement.


SQL>

SQL> CREATE Or Replace TYPE AddressType AS OBJECT (

  2    street VARCHAR2(15),

  3    city   VARCHAR2(15),

  4    state  CHAR(2),

  5    zip    VARCHAR2(5)

  6  );

  7  /


SQL> CREATE OR REPLACE TYPE address AS OBJECT

  2              (line1 VARCHAR2(20),

  3               line2 VARCHAR2(20),

  4               city VARCHAR2(20),

  5               state_code VARCHAR2(2),

  6               zip VARCHAR2(13));

  7  /



Type created.



SQL>

SQL> DECLARE

  2    off_add address :=address('19 J','R Rd','Vancouver','NJ','00000');

  3  BEGIN

  4    DBMS_OUTPUT.PUT_LINE(off_add.line1||' '||off_add.line2);

  5    DBMS_OUTPUT.PUT_LINE(off_add.city||', '||off_add.state_code||' '||off_add.zip);

  6  END;

  7  /

19 J R Rd

Vancouver, NJ 00000



PL/SQL procedure successfully completed.



SQL>

SQL>

32. 1. Object Type
	32. 1. 1.	Creating Object Types
	32. 1. 2.	Object instances and initialization
	32. 1. 3.	Nested object
	32. 1. 4.	Declare a function.
	32. 1. 5.	The MEMBER FUNCTION clause declares the getByDate() function.
	32. 1. 6.	The body defines the code for the method, and a body is created using the CREATE TYPE BODY statement.
	32. 1. 7.	Create a synonym and a public synonym for a type
	32. 1. 8.	Using DESCRIBE to Get Information on Object Types
	32. 1. 9.	Object types with member functions
	32. 1. 10.	add attribute
	32. 1. 11.	drop attribute
	32. 1. 12.	Object elements are referenced by using variable.attribute and variable.method notation.
	32. 1. 13.	Call data type member function in PL/SQL
	32. 1. 14.	Call data type constructor to initialize it
	32. 1. 15.	You must create an instance of the object first. With object types, you cannot just start assigning values to attributes.
	32. 1. 16.	You can set the depth to which DESCRIBE will show information using SET DESCRIBE DEPTH.
	32. 1. 17.	Use objects in SQL, First, you can use object types as attributes in a traditional relational way)
	32. 1. 18.	Alternatively, you can create an object table.
	32. 1. 19.	Use Object PL/SQL
	32. 1. 20.	Retrieve object as a whole
	32. 1. 21.	Using Objects
	32. 1. 22.	Combine user-defined type to create new type
	32. 1. 23.	Use self to reference member variable
	32. 1. 24.	Overloading based on user defined object types.

www.java2java.com | Contact Us

All other trademarks are property of their respective owners.