DataBlade Developers Kit User's Guide Programming DataBlade Module Routines in C

In This Chapter

Prerequisite Tasks

C Programming Task Overview

Source Files Generated by BladeSmith

C Header File

C Source Code Files

Microsoft Visual C++ Files

Warning File

Using Generated Code

Identifying the Source of Generated Code

Comments in Generated Code

MI_FPARAM Function Argument

Server Connection Handle

Tracing and Error Handling

How Tracing Works

Adding Tracing and Error Handling

Enabling Tracing in a DataBlade Module

Enabling Tracing in a Database Session

Standard Error Messages

Utility Functions Generated by BladeSmith

The Gen_sscanf() Utility Function

The Gen_IsMMXMachine() Utility Function

Editing Opaque Type Support Routines in opaque.c

Text Input and Output Functions

The Generated Code

Customizing the Code

Smart Large Object Considerations

Examples

Binary Send and Receive Functions

The Generated Code

Customizing the Code

Examples

Text File Import and Export Functions

The Generated Code

Customizing the Code

Smart Large Object Considerations

Binary File Import and Export Functions

The Generated Code

Customizing the Code

Smart Large Object Considerations

The Assign and Destroy Routines

The Generated Code

Customizing the Code

Smart Large Object Considerations

Examples

LOhandles() Function

Comparison Functions

Compare Function

B-Tree Comparison Functions

R-Tree Comparison Functions

Mathematic Functions

The Generated Code

Completing the Code

Example

Concat() Function

Hash() Function

Editing Statistics Routines in statistics.c

The Statistics Collection Function

The Generated Code

Customizing the Code

The Statistics Print Function

The Statistics Minimum, Maximum, and Distribution Functions

The Generated Code

Completing the Code

Example

Editing Routines in udr.c

Most User-Defined Routines

The Generated Code

Completing the Code

Examples

Cast Support Functions

The Generated Code

Completing the Code

Example

Aggregate Functions

The Generated Code

Completing the Code

Selectivity Functions

The Generated Code

Completing the Code

Example

Iterator Functions

The Generated Code

Completing the Code

Example

Compiling DataBlade Module Code

Compiling with Tracing Support

Compiling on UNIX

Unresolved Symbols

Compiling with Debug Support

Compiling on Windows NT