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Client APIs and tools
You can use the HCL Informix® implementation of client APIs to develop applications for Informix database servers.
Informix® Object Interface for C++ Guide
The Informix® Object Interface for C++ Programmer's Guide describes how to develop HCL Informix client applications by using the object-oriented C++ programming language.
Operation class reference
This section is an alphabetized reference that lists and describes the operation classes. Each class has an assignment operator and a copy constructor, which are not listed in the tables of methods.
The ITRoutineManager class

Client APIs and tools
You can use the HCL Informix® implementation of client APIs to develop applications for Informix database servers.
- Change Data Capture API Programmer's Guide
  The Informix® Change Data Capture API Programmer's Guide describes how to program applications to process changed data from HCL Informix databases using the Informix Change Data Capture API.
- Embedded SQLJ for HCL Informix®
  The Informix® Embedded SQLJ User's Guide contains information about using Informix Embedded SQLJ.
- ESQL/C Guide
  The Informix® ESQL/C Programmer's Manual explains how to use Informix ESQL/C, the Informix implementation of Embedded Structured Query Language (SQL) for C (ESQL/C), to create client applications with database-management capabilities.
- GLS User's Guide
  The Informix® GLS User's Guide describes the Global Language Support (GLS) feature available in Informix products.
- API
  The Informix® GLS API Programmer's Guide describes the global language support (GLS) application programming interface (API) available in Informix ESQL/C and HCL Informix DataBlade® modules.
- Informix® Object Interface for C++ Guide
  The Informix® Object Interface for C++ Programmer's Guide describes how to develop HCL Informix client applications by using the object-oriented C++ programming language.
  - Architecture of the object interface for C++
    The encapsulates HCL Informix® database server features into a class hierarchy.
  - Issue database queries and retrieve results
    To interact with a database, your C++ client application uses the operation classes of the . These classes have methods for opening database connections, submitting queries, and manipulating database cursors. This section describes how to use these methods.
  - Access data values
    This section describes the specific value interfaces in detail, and shows how to modify value objects and extract information through the value interfaces into host variables in your application.
  - Create and extend value objects
    When you retrieve values from the HCL Informix® database by using the , the values are returned as value objects. Value objects are created by the Object Interface for C++ by using an extensible class factory that maps Informix data types to C++ objects.
  - Operation class reference
    This section is an alphabetized reference that lists and describes the operation classes. Each class has an assignment operator and a copy constructor, which are not listed in the tables of methods.
  - Value interface reference
    This section lists and describes the value interfaces. The ITFactoryList and ITPreserveData classes provide support for value interfaces.
  - Appendixes
    This section contains additional reference information.
- Informix® ODBC Driver Guide
  The Informix® ODBC Driver Programmer's Manual serves as a user guide and reference for Informix ODBC Driver, which is the Informix implementation of the Microsoft™ Open Database Connectivity (ODBC) interface, Version 3.0.
- .NET provider options
  The Data Server Provider for .NET DB2® provider option is the preferred Informix® provider for developing new applications.
- Informix 4GL
  This topic provides a link to the documentation.
- Informix® JDBC Driver Guide
  The Informix® JDBC Driver Programmer's Guide describes how to install, load, and use Informix JDBC Driver to connect to the Informix database from within a Java™ application or applet.
- Informix International Language Supplement (ILS) User Guide
  These topics include information about the translated user interface files for Informix® UNIX™ products, locales, and code set conversion tables
- Informix® OLE DB Provider Guide
  The Informix® OLE DB Provider Programmer's Guide describes the software requirements for using Informix OLE DB Provider, show how to install and configure the provider for your use, and explain how to use Informix OLE DB Provider to enable client applications, such as ActiveX Data Object (ADO) applications and web pages, to access data on the Informix server.

The ITRoutineManager class

Base class: ITErrorManager

This functionality provided by this class is only supported with HCL Informix® databases.

The ITRoutineManager class provides an alternative way to execute server routines. When using ITRoutineManager, a connection does not have to be checked out to get or execute a routine (and a value object, therefore, can use it), and the execution of the routine commences faster (since there is no SQL to parse). See The ITConnection class for information about connection checkout.

This class provides the following methods.


Method	Description
ITRoutineManager(ITConnection &)	Creates a Routine Manager for the specified connection.
ITBool GetRoutine(const ITString & signature)	Gets the descriptor for the registered routine from the server so the routine can be executed later by ExecForValue(). Returns `TRUE` if it gets the routine descriptor, `FALSE` otherwise.
const ITTypeInfo *ResultType() const	Returns a pointer to an ITTypeInfo instance that encapsulates the type of the return value of the routine. It returns `NULL` if did not get the routine.
int NumParams() const	Returns the number of parameters the routine accepts, `-1` if did not get the routine.
const ITTypeInfo *ParamType(int paramno) const	Returns a pointer to an ITTypeInfo instance that encapsulates the type of the specified parameter. It returns `NULL` if did not get the routine or if the argument is out of bounds.
ITValue *Param(int paramno) const	Returns a pointer to the parameter value object, `NULL` if did not get the routine or if the argument is out of bounds.
ITBool SetParam(int paramno, ITDatum *pdatum)	Sets the parameter value object for a specified parameter index to the pdatum. Returns `TRUE` on success, `FALSE` if did not get the routine or if the parameter is out of bounds, or the ITDatum is not of the same type as the corresponding routine parameter type.
ITValue ExecForValue(ITEssential *outerunkn = NULL)	Executes the routine with the set parameters. Returns a pointer to the ITValue interface of the value object, instantiated for the return value. Returns `NULL` if did not get the routine or if execution failed.