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The first step is to create the schema that we will use in our examples. The following code begins this process by defining an object type address that can hold the address of a house or apartment in the United States. The map function get_address() (signified by the keywords map member function preceding the function name) may be a new concept to many of you. Very briefly, a map method is an optional method that provides a basis for comparing objects by mapping object instances to one of the scalar types DATE, NUMBER, or VARCHAR2, or to an ANSI SQL type such as CHARACTER or REAL. Please see the section Methods for Comparing Objects of 1 in the Oracle document Oracle Database Application Developer s Guide Object Relational Features (10g Release 1) for more details. benchmark@ORA10G> create or replace type address as object 2 ( 3 line1 varchar2(50), 4 line2 varchar2(50), 5 street varchar2(50), 6 city varchar2(30), 7 state varchar2(2), 8 zip varchar2(10), 9 map member function get_address return varchar2 10 ) 11 not final; 12 / Type created. We create the type body that contains the implementation of the function get_address(). Note how we map the address to a varchar2 by concatenating different attributes of the address separated by a space: benchmark@ORA10G> create or replace type body address 2 as 3 map member function get_address 4 return varchar2 5 is 6 l_address varchar2(200); 7 begin 8 l_address := line1|| ' ' || 9 line2 || ' ' || 10 street || ' ' || 11 city || ' ' || 12 state || ' ' || 13 zip; 14 15 return l_address; 16 end; 17 end; 18 / Type body created. vb.net code 39 reader VB . NET Image: Example to Read Code 39 Barcode with VB . NET Codes in ...
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NET Code 39 barcode Reader Control is an advanced developer-library for . NET class ... NET Code 39 barcode scanner can read barcode images using VB . Now that we have an object type, we need to create a table that will store the data contained in the object type. In the following code snippet, we create an object table, address_table, that contains rows of type address: benchmark@ORA10G> create table address_table of address; Table created. We end the section with a piece of code that inserts an address object into the table address_table: benchmark@ORA10G> declare 2 l_address address; 3 begin 4 l_address := address( '145 Apt # 7','', 'Wander St', 5 'Mountain View', 'CA', '94055' ); 6 insert into address_table values ( l_address ); 7 commit; 8 dbms_output.put_line ( l_address.get_address() ); 9 end; 10 / 145 Apt # 7 Wander St Mountain View CA 94055 PL/SQL procedure successfully completed. Note Although the 3-tier fat mode off-loads processing to the clients and improves system performance, vb.net code 39 reader C# . NET Code 39 Barcode Reader Control | Free C# Code to Scan ...
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NET Code 39 Barcode Reader , Reading Code - 39 barcode images in .NET, C#, VB . NET , ASP.NET applications. The IExtenderProvider interface defines just one method: CanExtend(). This method is called by Windows Forms to ask the extender control whether it wishes to extend any given control. Windows Forms automatically calls CanExtend() for every control on the form: public bool CanExtend(object extendee) { if (IsPropertyImplemented(extendee, "ReadOnly") || IsPropertyImplemented(extendee, "Enabled")) return true; else return false; } The ReadWriteAuthorization control can extend any control that implements either a ReadOnly or Enabled property. This covers most controls, making ReadWriteAuthorization broadly useful. If the potential target control implements either of these properties, a true result is returned to indicate that the control will be extended. The IsPropertyImplemented() method is a helper that uses reflection to check for the existence of the specified properties on the target control: private static bool IsPropertyImplemented( object obj, string propertyName) { if (obj.GetType().GetProperty(propertyName, BindingFlags.FlattenHierarchy | BindingFlags.Instance | BindingFlags.Public) != null) return true; else return false; } I assume that you ve set up your environment as specified in the earlier section Setting Up the JPublisher Environment. We ll now create custom classes for the object type address using JPublisher. First, we ll pass command-line parameters to JPublisher. We ll then repeat the process by using the JPublisher properties file and input file. Using JPublisher Command-Line Parameters The following command generates a class called book.ch10.jpub.MyAddress that extends another generated class, book.ch10.jpub.Address, to add a Java method corresponding to the method get_address() in the object type address. The object type itself will be mapped to the MyAddress class. (Note that the final line is the output of the program run and is not part of the command itself. It lists the object types for which JPublisher is generating Java classes.) B:\code\book\ch10\jpub>jpub -user=benchmark/benchmark -methods=none -builtintypes=jdbc -numbertypes=objectjdbc -usertypes=jdbc -sql address:Address:MyAddress -package=book.ch10.jpub BENCHMARK.ADDRESS The meaning of each command-line option is as follows: -user=benchmark/benchmark: The username and password for connecting to the database. vb.net code 39 reader Visual Studio . NET Barcode Scanner Library API for . NET Barcode ...
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