Get Environment Variable (QtmhGetEnv) API

Parameters

Required Parameter Group:

1

Receiver variable

Output

Char(*)

2

Length of receiver variable

Input

Binary(4)

3

Length of response

Output

Binary(4)

4

Request variable

Input

Char(*)

5

Length of request variable

Input

Binary(4)

6

Error Code

I/O

CHAR(*)

The QtmhGetEnv API allows you to get the value set by the server for a particular HTTP environment variable.

Required parameter group

Receiver variable

OUTPUT:CHAR(*)

The output variable that contains the value set by the server for the requested environment variable. In CGI input mode %%MIXED%%, this value will be in CCSID 37; otherwise, it will be in the CCSID of the current job. Note that the QUERY_STRING in %%BINARY%% mode is not converted by the server.

Length of receiver variable

INPUT:BINARY(4)

The input variable containing the length of the space provided to receive the environment variable’s value.

Length of response

OUTPUT:BINARY(4)

The output variable that contains the length of the environment variable’s value. When the API is unable to determine the value for the requested environment variable, the length of the environment variable value is set to zero. When the size required for the environment variable value is larger than the length of the receiver variable, the size required to receive the value is returned.

Request variable

INPUT:CHAR(*)

The input variable containing the desired environment variable’s name.

Length of request variable

INPUT:BINARY(4)

The input variable containing the length of the desired environment variable’s name.

Error Code

I/O:CHAR(*)

Chapter 2. Application Programming Interfaces 25

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IBM AS/400E manual Get Environment Variable QtmhGetEnv API
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AS/400E specifications

The IBM AS/400E, now more commonly known as IBM i, is a robust and versatile midrange server that has been designed to provide a comprehensive computing solution for businesses of all sizes. First introduced in the late 1980s, the AS/400 series has undergone multiple enhancements and rebranding, with the AS/400E being one of the notable iterations. This powerful platform is closely associated with IBM's commitment to reliability, scalability, and integrated business solutions.

One of the main features of the AS/400E is its highly integrated architecture that combines hardware and software into a cohesive system. This integration allows for seamless operations, reducing the complexity typically associated with managing disparate systems. The system is powered by IBM's proprietary OS/400 operating system, which has evolved into IBM i, featuring advanced capabilities like object-oriented programming, integrated database management, and security features that are essential for enterprise environments.

A key characteristic of the AS/400E is its robust database support, primarily through the use of DB2 for i. This integrated database management system enables efficient data handling and retrieval, facilitating real-time business analytics and reporting. Furthermore, the platform supports a variety of programming languages, including RPG, COBOL, and Java, making it flexible for developers who require diverse tools for application development.

The AS/400E is also known for its exceptional reliability and uptime, making it a preferred choice for critical business applications in industries such as finance, healthcare, and manufacturing. This reliability is backed by advanced error detection and correction mechanisms, as well as redundancy features that help prevent data loss and minimize downtime.

In terms of scalability, the AS/400E can effortlessly expand to accommodate growing business demands. Organizations can increase processing power by adding more resources without significant disruption. This scalability, combined with the system’s built-in virtualization capabilities, allows businesses to optimize resource usage and streamline operations.

Security is another defining feature of the AS/400E. The platform incorporates various layers of security measures, including user authentication, encryption, and comprehensive auditing capabilities, ensuring that sensitive business data is protected against unauthorized access.

Overall, the IBM AS/400E remains a powerful tool in the enterprise computing landscape, providing businesses with an integrated, reliable, and secure solution for their technological needs. Its enduring popularity is a testament to its capability to evolve with changing business requirements while maintaining its core attributes of high performance and stability.
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