Simple .NET/ASP.NET PDF document editor web control SDK

In the chapters that follow, we offer you a road map that enables you to navigate the application layers, choose what to use with each layer, and move information between layers Part 1 starts with this chapter, which provides you with an overview of NET architectural problems and some examples of solutions This gives you some concrete endpoints that show what your journey may look like Then, we ll move the focus to the point where a request comes into a web server This may be a request for a Web Form (an ASPX page), but it may also be a request for a Web Service, a Remoted component, or some custom processor specific to your application We take broad view of ASP NET in this book, looking at its full features rather than focusing just on Web Forms.

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/* ORAData interface */ public Datum toDatum(Connection c) throws SQLException { return _struct.toDatum(c, _SQL_NAME); } /* ORADataFactory interface */ public ORAData create(Datum d, int sqlType) throws SQLException { return create(null, d, sqlType); } protected ORAData create(Employee o, Datum d, int sqlType) throws SQLException { if (d == null) return null; if (o == null) o = new Employee(); o._struct = new MutableStruct((STRUCT) d, _sqlType, _factory); return o; } /* accessor methods */ public java.math.BigDecimal getEmpNo() throws SQLException { return (java.math.BigDecimal) _struct.getAttribute(0); } public void setEmpNo(java.math.BigDecimal empNo) throws SQLException { _struct.setAttribute(0, empNo); } public String getName() throws SQLException { return (String) _struct.getAttribute(1); } public void setName(String name) throws SQLException { _struct.setAttribute(1, name); } public EmployeeRef getManager() throws SQLException { return (EmployeeRef) _struct.getAttribute(2); } public void setManager(EmployeeRef manager) throws SQLException { _struct.setAttribute(2, manager); } }

Stored procedures can also perform deletions or updates (executed via the ExecuteNonQuery() method of the command object) or return data through out parameters. These can be defined using the OUTPUT keyword after a single parameter definition in the stored procedure. When calling the stored procedure, the out parameter has to have its direction set to ParameterDirection.Output, and after executing the stored procedure, its return value can be read using the Value property of the given parameter.

The following code listing is for the class DemoCustomRefQueryAndUpdate. It shows how to use the EmployeeRef and Employee classes to query and update the reference objects. I provided explanatory comments within the code where required. /** This program demonstrates how, using custom classes, you can * 1. query a ref object * 2. dereference it to get its value * 3. update its value and store it back in the database * COMPATIBLITY NOTE: * runs successfully against 9.2.0.1.0 and 10.1.0.2.0

Regardless of what s being requested, web server requests travel a common pathway How do these requests travel from Internet Information Services (IIS) to ASP NET, and what are the points of extensibility along the way We ll examine this process in 2 In 3 and 4, we ll focus on ASP NET as a presentation tier We ll look at how you can maximize code reuse at the presentation tier, as well as discuss the internals for how an instance of a Page object becomes a stream of HTML We ll show you how the full features of the browser can be leveraged for the presentation tier, and will cover some of the improvements and new features of version 20 of the Framework In Part 2, we begin by discussing security in the .

Many of the database tasks you saw earlier in this chapter can be easily performed using the built-in capabilities of Visual Studio. It also gives you good tools for working with stored procedures and views, building SQL queries, or designing entity models.

*/ import java.sql.SQLException; import java.sql.Connection; import java.sql.PreparedStatement; import java.sql.Ref; import oracle.jdbc.OracleConnection; import oracle.jdbc.OracleResultSet; import book.util.JDBCUtil; import book.util.Util; import book.ch11.ref.jpub.Employee; import book.ch11.ref.jpub.EmployeeRef; class DemoCustomRefQueryAndUpdate { public static void main(String args[]) throws SQLException { Util.checkProgramUsage( args ); Connection conn = null; try { conn = JDBCUtil.getConnection("benchmark", "benchmark", args[0]); The method _doSelectRef() demonstrates how to select a Ref object: _doSelectRef( conn ); The method _doUpdateRef() demonstrates how to update a Ref object so that it points to a different row after the update: _doUpdateRef( conn ); } finally { // release JDBC resources in the finally clause. JDBCUtil.close( conn ); } } Querying a Ref Object The method _doSelectRef() is defined as follows: private static void _doSelectRef( Connection conn ) throws SQLException { We define a query statement that selects all columns of the table emp_table_with_ref including the reference column manager: String stmtString = "select e.emp_no, e.name, e.manager" + " from emp_table_with_ref e"; PreparedStatement pstmt = null;