SQLJ

Application Developer will insure that this SQLJ file is transformed into a Java file.

When you attempt to drop and recreate the stored procedure, but did not remove the JAR file before calling sqlj. install_jar again.

For the first situation, you will have to call sqlj. remove_jar first before you call sqlj. install_jar to install the JAR file again.

At this point, you will need to add code to your Java main method and you will have to create a SQLJ method.

Although it is not covered in this article, it is still possible to use SQLJ to develop Stored Procedures.

The SQLJ has three components: a translator, customizer, and a run-time environment.

Once the environment is set up, you should be able to create and deploy your own Java (or SQLJ) stored procedure.

In the second part, learn how to deploy an SQLJ application into a WebSphere Application Server and do a test run in that environment.

In this particular example, the JAR file was not created prior to invoking the sqlj. install_jar routine to install the JAR file.

These SQLJ tools call Java programs that provide tooling necessary for customizing and binding SQLJ applications.

SQLJ can perform syntactic and semantic checking on the code, using database connections at compile time.

SQLJ provides a simplified way of processing SQL statements.

SQLJ provides the unique ability to develop using static SQL statements and control access at the DB2 package level.

This tutorial assumes that the user is familiar with SQLJ and JDBC concepts.

Now, we have to add bean methods to invoke our business logic in the SQLJ files.

SQLJ is a standard development model for data access from Java applications.

The package for SQLJ application is generated at the time db2sqljcustomize is executed.

This will bring up the SQLJ Wizard shown next.

It also supports embedded SQL for Java (SQLJ), Java user-defined functions (UDFs), and Java stored procedures.

The translator produces Java code based on the embedded SQL statements within a source SQLJ program.

Or you can simply call sqlj. replace_jar if you want to replace the JAR file with updated class files.

Translating the application generates a standard Java source file, plus an SQLJ serialized profile (sqljapp_SJProfile0. ser).

One key advantage of pureQuery over SQLJ is the ease of enabling static SQL access in a way that is more streamlined.

The SQLJ standard now provides SQL-based database access from Java apps.

Possible values for relational databases are JDBC and SQLJ.

SQLJ. REPLACE_JAR: This will "replace" a JAR file with a new copy in DB2.

Translation of SQLJ applications produce . class files and one or more serialized profiles.

JDBC and SQLJ are used to access databases in your Java programs.

SQLJ programs require fewer lines of code than JDBC programs.

Enter the package name and the file name and then select Finish to create the SQLJ file.

SQLJ The syntax extensions for Java result sets are as specified in the proposed SQLJ1 standard.

You can also use the DWB to develop SQLJ applications, and create, edit, and run SQL statements and XML queries.

JDBC and SQLJ can interoperate in the same application.

The Java main method will simply invoke the SQLJ method.

After the discovery that JSQL was a trademarked term, JSQL was renamed to SQLJ.

"Static" only exists within applications, such as SQL stored procedures, and embedded SQL in applications (such as Java's SQLJ).

You can also use the Data Stuidio to develop SQLJ applications, and create, edit, and run SQL statements and XML queries.

We will create a SQLJ method, which reads an employee record given the employee number from the DB2 SAMPLE database.

In the first part, learn how to build, customize, and test an SQLJ application using Rational Application Developer.

Now we will create a SQLJ file to contain our business logic.

For SQLJ stored procedures, bind the serialized profiles to the target server incorporating the bind options from the Deploy wizard

Use SQL for Java (SQLJ) to read and update data in a DB2 database

Go ahead and use the above steps to create a second SQLJ file named

Install the JAR file using the DB2-supplied SQLJ_INSTALL_JAR stored procedure against the target server

Step 2: Writing a simple SQLJ application

Information Technology - SQLJ - Part 2: SQL Types using the JAVATM Programming Language

Now, we can add our business logic. In the SQLJ files we created as follows

J2EE 1. 4 and JDBC 3. 0 compliance with the new DB2 UDB universal driver (which includes significantly enhanced SQLJ support)