Here an example:

 The first message, 2009andC++ together, ops

Replacing  ‘and’ to ‘ and ‘, line 50

Share This | Email this page to a friend

The new DataSnap is completely independent from COM/DCOM and takes advantage of the DBX Framework. Basically you will transfer information between client and server, using the DBX Framework data types is very easy. So you are be able to execute server methods through the DataSet, and manipulating the returns as DBXReader and ClientDataSet.

Building a Server Side

To build a new DataSnap Server application, you basically need three components.

• DSServer - Server Component, control the server connection allowing to handle thought the events onConnect, onDisconnect, onError activities on the server.
• DSTCPServerTransport - Component responsible to transfer the information between client and server thought the port specified as a property. Also you can define the buffer kb size.
• DSServerClass - Register the server methods to the client.

But, how and what can I expose to the DataSnap Client?

All public methods from any class descendent of TPersistence class could be exposed, since the class contain the compile directive {$MethodInfo ON} and is registered by DSServerClass.

Yes, it works for remote data module.

Below an example, a class exposed in my DataSnap server, contain 3 public methods.

Client Side

Let’s talk about the client side. How to connect and execute methods on the server?

The client side connection is based on DBXClient, which means you just need the SQLConnection(dbExpress), define the host name, port and DBXClient driver.

Using DBXClient as the driver you will take advantage of the entire DBX Framework, for example transfer DBXReader between client and server is very easy.

There are many ways to execute the methods exposed on the server, below are some examples using the methods from figure 1.

Executing methods through SqlServerMethod component

One way to execute the methods on the server is using the new SqlServerMethod component, this component inherits from CustomSQLDataSet, which means you will be able to execute server side methods using a DataSet, input/output parameters will be represented by Params property.

 Executing methods through SQLDataSet component

A new CommandType named DataSnap.ServerMethods was added to the SQLDataSet component, which allows you to execute server side methods, returning DBXReader allows you to have bi-directional cursor through the ClientDataSet.

This is a small introduction about things you can do using the new DataSnap. Stay tuned we will bring more details and examples about DataSnap.

Share This | Email this page to a friend

Anonymous method is a procedure or function that does not have a name associated with it. An anonymous method treats a block of code as an entity that can be assigned to a variable or used as a parameter to a method. In addition, an anonymous method can refer to variables and bind values to the variables in the context in which the method is defined.

Suppose you need to execute part of one code more them once, this code is only necessary in this method, you can define this code as anonymous, look the example below.

Simple and shorter the code is that uses anonymous methods. This is ideal if you want to explicitly and simply define these methods and use them immediately without the overhead and effort of creating a class that may never be used anywhere else. The resulting code is easier to understand.

A very important feature of anonymous methods is that they may reference variables that are visible to them where they were defined, these variables can be bound to values and wrapped up with a reference to the anonymous method.

The variable adder contains an anonymous method that binds the value 20 to the variable y referenced in the anonymous method’s code block. This binding persists even if the value goes out of scope.

Share This | Email this page to a friend

I wll demonstrate how Delphi for PHP brings visual development to the world of PHP, and how powerful is our PHP editor, debugger and profiler. Below a list of features will you see in this presentation:

• Source code features
  • Error Insight
  • Sync Edit
  • Structure Pane
  • Code Insight
  • Change tracking
  • Macro record
  • Code Folding
  • Bookmarks
  • Multiple editors
  • UTF-8 support
  • phpDoc support
  • Customize the editor
  • Code formatter
• Running and debugging a PHP legacy application
• Visual Designer and Templated forms
• Zend framework
• Build a database access

Register here

See you soon!!

Share This | Email this page to a friend

If you wanna help FireFox, click here for more information.

Share This | Email this page to a friend

Share This | Email this page to a friend

Both of the Delphi Days were great and unique opportunities to talk our community and answer the main question: “What will happen with Delphi?”.  The answer is very simple, LONG LIFE FOR DELPHI.

During the event the attendees had an opportunity to see Delphi for PHP 2 and Delphi/400, our most recently released products.

Both JBuilder Day as well as Delphi Day were successful.   The new JBuilder 2008 with Application Factories is an answer to many Java issues;  not just to support web development, frameworks, libraries, etc., but to help developers to share ideas, to transform their intention into reality and dramatically improve productivity.

This week more 4 JBuilder events to go!  Two in Mexico City and one in Guadalajara and Monterrey.

Share This | Email this page to a friend

ER/Studio is independent of the database, offering native integration with MySQL, Oracle, Sysbase, and DB2. To connect to other databases, you can use ODBC, and in the screen shot below you can see the famous example database from InterBase, the employee.ib represented in ER/Studio.

ER/Studio provides a lot of functionality and definitely will make your life easier with features like: reverse engineering, synchronization, data warehouse support, and the complete database management.

This is just the beginning!!!

Share This | Email this page to a friend

There are some updates on this version, especially on the smarty template, now with the new HTML Designer we can see the templates in the IDE.

After you download the example read the Readme file and my first post about this demo.

Download -> http://cc.codegear.com/item/25575

Have fun!!

Share This | Email this page to a friend

Share This | Email this page to a friend