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Extending Informix®
Beyond standard relational database objects, HCL Informix® can be extended to handle specialized data types, access methods, routines, and other objects. Informix includes many built-in extensions that are fully integrated in the database server. Informix also provides DataBlade® modules, which are packages of extended database objects for a particular purpose and that are installed separately from the database server. Alternatively, you can create your own user-defined objects for Informix.
Informix® extensions and DataBlade® modules
These topics describe how to use built-in database extensions and separately installed DataBlade® modules.
Spatial Data User's Guide
The contains information to assist you in using the Informix® spatial extension. The Informix spatial extension adds custom data types and supporting routines to the server.
Appendixes
Error messages
Error messages and their explanations
USE41
The projection string for your SRID is invalid in %FUNCTION%.

Extending Informix®
Beyond standard relational database objects, HCL Informix® can be extended to handle specialized data types, access methods, routines, and other objects. Informix includes many built-in extensions that are fully integrated in the database server. Informix also provides DataBlade® modules, which are packages of extended database objects for a particular purpose and that are installed separately from the database server. Alternatively, you can create your own user-defined objects for Informix.
- Informix® extensions and DataBlade® modules
  These topics describe how to use built-in database extensions and separately installed DataBlade® modules.
  - Database Extensions User's Guide
    The Informix® Database Extensions User's Guide explains how to use the database extensions that come with HCL Informix: Large Object Locator, MQ messaging, binary data types, basic text search, node data type, and SQL packages.
  - Performing XML Publishing
    The Informix® XML User's Guide includes information about using built-in functions for XML publishing with Informix.
  - Spatial Data User's Guide
    The contains information to assist you in using the Informix® spatial extension. The Informix spatial extension adds custom data types and supporting routines to the server.
    - Getting started with spatial data
      The Informix® spatial solution embeds a geographic information system (GIS) within the Informix database server. The Informix spatial data types integrate spatial and non-spatial data, providing a seamless point of access using SQL (Structured Query Language).
    - Spatial data types
      Informix® spatial data types are divided into two categories: the base geometry subclasses and the homogeneous collection subclasses.
    - Data exchange formats
      You can use several different GIS data exchange formats for spatial data.
    - R-tree indexes
      An index organizes access to data so that entries can be found quickly, without searching every row. The R-tree access method enables you to index multidimensional objects.
    - Run parallel queries
      Running queries in parallel distributes the work for one aspect of a query among several processors and can dramatically improve performance.
    - Estimate your spatial data
      The total amount of space you need for spatial data is equal to the size of spatial tables plus the size of the spatial indexes.
    - Spatial functions
      Use specific spatial data type functions to perform operations on spatial data.
    - Spatial Java™ API
      The spatial Java™ API enables Java applications to access geometry features that are stored in databases that contain spatial data. The spatial Java API provides classes to work with spatial objects from Java client-side programs. The client-side objects are called value objects. Spatial value objects can also be created and examined by Java methods that parallel some of the spatial data functions.
    - Appendixes
      - Load and unload shapefile data
        Use the infoshp, loadshp, and unloadshp utilities for working with spatial data contained in ESRI shapefiles.
      - OGC well-known text representation of spatial reference systems
        These topics explain how to represent a spatial reference system using a text string and provides information about supported units of measure, spheroids, datums, prime meridians, and projections.
      - OGC well-known text representation of geometry
      - OGC well-known binary representation of geometry
      - ESRI shape representation
      - Error messages
        Error messages and their explanations
        USE01
        Unable to establish a connection in %FUNCTION%.
        7USE02
        Function %FUNCTION% is unable to allocate memory.
        USE03
        Invalid geometry in %FUNCTION%.
        USE04
        Function %FUNCTION% not applicable to type %TYPE%.
        USE05
        This function is not yet implemented.
        USE06
        Unknown ESRI shape library error (%ERRCODE%) in %FUNCTION%.
        USE07
        Internal SAPI error. %SAPIFUNC% returned %RETVAL%. Failure in %FUNCNAME%.
        USE08
        Nearest-neighbor queries require an index scan.
        USE09
        Unknown or unsupported shape file type (%TYPE%) found in %FUNCTION%.
        USE10
        Unknown or unsupported OpenGIS WKB type (%TYPE%) found in %FUNCTION%.
        USE11
        Invalid SRID %SRID% or NULL in %FUNCTION%.
        USE12
        Unknown or unsupported geometry type (%TYPE%) found in %FUNCTION%.
        USE13
        Spatial DataBlade® not installed correctly: the spatial_references table does not exist.
        USE14
        Unknown spatial reference identifier %SRID%.
        USE15
        Invalid coordinate reference system object in function %FUNCTION%.
        USE16
        Unable to get the geometry data pointer from the server in %FUNCTION%.
        USE17
        Geometry verification failed.
        USE18
        Buffer operation failed.
        USE19
        Coordinates out of bounds in %FUNCTION%.
        USE20
        Invalid parameter in function %FUNCTION%.
        USE21
        Geometry integrity error in function %FUNCTION%.
        USE22
        Too many points in feature.
        USE23
        Spatial reference conflict, %SRID1% vs %SRID2%.
        USE24
        Incompatible geometries in function %FUNCTION%.
        USE25
        Subscript %SUBSCRIPT% out of range in function %FUNCTION%.
        USE26
        Subtype mismatch: received subtype=%TYPE1%, expected subtype=%TYPE2%.
        USE27
        Unknown or unsupported geometry data structure version (%VERSION%) found in %FUNCTION%.
        USE28
        Invalid text in %FUNCTION%.
        USE29
        Unexpected system error in %FUNCTION%.
        USE30
        Overlapping polygon rings in %FUNCTION%.
        USE31
        Too few points for geometry type in %FUNCTION%.
        USE32
        Polygon does not close in %FUNCTION%.
        USE33
        Interior ring not enclosed by exterior ring in %FUNCTION%.
        USE34
        Polygon has no area in %FUNCTION%.
        USE35
        Polygon ring contains a spike in %FUNCTION%.
        USE36
        Multipolygon exterior rings overlap in %FUNCTION%.
        USE37
        The geometry boundary is self-intersecting in %FUNCTION%.
        USE38
        The geometry has too many parts in %FUNCTION%.
        USE39
        Mismatched text string parentheses in %FUNCTION%.
        USE40
        Unknown or unsupported ESRI entity type (%TYPE%) found in %FUNCTION%.
        USE41
        The projection string for your SRID is invalid in %FUNCTION%.
        USE42
        Nearest-neighbor queries are not supported by the current version of the server.
        USE43
        %PARAM1% value must be less than %PARAM2% value.
        USE44
        Unknown OGIS WKB byte-order byte encountered in %FUNCTION%.
        USE45
        OGIS WKB geometry collection type is not supported.
        USE46
        USE47
        Cannot create SE_Metadata lohandle file %NAME%. Check directory permissions.
        USE48
        SE_Metadata lohandle file %FILE% not found, unreadable, or corrupt. Execute function SE_MetadataInit to reinitialize.
        USE49
        SE_MetadataTable is a read only table.
        USE50
        Vertex not found in %FUNCTION%.
        USE51
        SE_Metadata smart blob is corrupt or unreadable.
        USE52
        SE_Metadata memory cache is locked.
        USE53
        Spatial datablade assert failure. File = %FILE%, line = %LINE%.
        USE54
        You must create a default sbspace before you can register the Spatial DataBlade®.
        -674
        Routine (%FUNCTION%) cannot be resolved.
  - Spatiotemporal Search for Moving Objects User's Guide
    The describes how to program applications to search data from moving objects in HCL Informix® databases using the spatiotemporal search extension.
  - TimeSeries Data User's Guide
    The Informix® TimeSeries Data User's Guide contains information to assist you in using the TimeSeries extension with HCL Informix.
- Creating extensions
  You can create user-defined data types, routines, access methods, and other database objects to suit your needs. You can use application programming interfaces to write user-defined routines and applications that access data in Informix® databases.

USE41

The projection string for your SRID is invalid in %FUNCTION%.

The projection string stored in the spatial_references table was determined to be invalid.

Compare the projection string with the valid projection strings listed in OGC well-known text representation of spatial reference systems.