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|
<?xml version='1.0' ?>
<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd" [
<!ENTITY % myents SYSTEM "entities.inc">
%myents;
]>
<!-- Condition System -->
<reference id="ref-conditions">
<title>CLSQL Condition System</title>
<partintro>
<para>
&clsql; provides and uses a condition system in which all errors
and warnings are of type <link
linkend="sql-condition"><errortype>sql-condition</errortype></link>. This
section describes the various subclasses of <link
linkend="sql-condition"><errortype>sql-condition</errortype></link>
defined by &clsql;. Details are also provided for how they are
used in &clsql; and intended to be signalled in user
code. Finally, slot accessors for some of the condition types
are described.
</para>
</partintro>
<refentry id="backend-warning-behavior">
<refmeta>
<refentrytitle>*BACKEND-WARNING-BEHAVIOR*</refentrytitle>
</refmeta>
<refnamediv>
<refname>*BACKEND-WARNING-BEHAVIOR*</refname>
<refpurpose>Controls behaviour on warnings from underlying RDBMS.</refpurpose>
<refclass>Variable</refclass>
</refnamediv>
<refsect1>
<title>Value Type</title>
<para>
Meaningful values are <symbol>:warn</symbol>,
<symbol>:error</symbol>, <symbol>:ignore</symbol> and &nil;.
</para>
</refsect1>
<refsect1>
<title>Initial Value</title>
<para><symbol>:warn</symbol></para>
</refsect1>
<refsect1>
<title>Description</title>
<para>
Action to perform on warning messages
from backend. Default is to <symbol>:warn</symbol>. May also be
set to <symbol>:error</symbol> to signal an error or
<symbol>:ignore</symbol> or &nil; to silently ignore the
warning.
</para>
</refsect1>
<refsect1>
<title>Examples</title>
<screen>
<!-- examples -->
</screen>
</refsect1>
<refsect1>
<title>Affected By</title>
<para>None.</para>
</refsect1>
<refsect1>
<title>See Also</title>
<para>None.</para>
</refsect1>
<refsect1>
<title>Notes</title>
<para><symbol>*backend-warning-behaviour*</symbol> is a &clsql;
extension.</para>
</refsect1>
</refentry>
<refentry id="sql-condition">
<refmeta>
<refentrytitle>SQL-CONDITION</refentrytitle>
</refmeta>
<refnamediv>
<refname>SQL-CONDITION</refname>
<refpurpose>the super-type of all
&clsql;-specific
conditions</refpurpose>
<refclass>Condition Type</refclass>
</refnamediv>
<refsect1>
<title>Class Precedence List</title>
<para>
<simplelist type="inline">
<member><link linkend="sql-condition"><errortype>sql-condition</errortype></link></member>
<member><errortype>condition</errortype></member>
<member><errortype>t</errortype></member>
</simplelist>
</para>
</refsect1>
<refsect1>
<title>Description</title>
<para>
This is the super-type of all &clsql;-specific conditions
defined by &clsql;, or any of it's database-specific
interfaces. There are no defined initialization arguments nor
any accessors.
</para>
</refsect1>
<refsect1>
<title>Notes</title>
<para><errortype>sql-condition</errortype> is a &clsql;
extension.</para>
</refsect1>
</refentry>
<refentry id="sql-error">
<refmeta>
<refentrytitle>SQL-ERROR</refentrytitle>
</refmeta>
<refnamediv>
<refname>SQL-ERROR</refname>
<refpurpose>the super-type of all
&clsql;-specific
errors</refpurpose>
<refclass>Condition Type</refclass>
</refnamediv>
<refsect1>
<title>Class Precedence List</title>
<para>
<simplelist type="inline">
<member><link linkend="sql-error"><errortype>sql-error</errortype></link></member>
<member><errortype>simple-error</errortype></member>
<member><errortype>simple-condition</errortype></member>
<member><errortype>error</errortype></member>
<member><errortype>serious-condition</errortype></member>
<member><link linkend="sql-condition"><errortype>sql-condition</errortype></link></member>
<member><errortype>condition</errortype></member>
<member><errortype>t</errortype></member>
</simplelist>
</para>
</refsect1>
<refsect1>
<title>Description</title>
<para>
This is the super-type of all &clsql;-specific conditions that
represent errors, as defined by &clsql;, or any of it's
database-specific interfaces. There are no defined
initialization arguments nor any accessors.
</para>
</refsect1>
<refsect1>
<title>Notes</title>
<para><errortype>sql-error</errortype> is a &clsql; extension.</para>
</refsect1>
</refentry>
<refentry id="sql-warning">
<refmeta>
<refentrytitle>SQL-WARNING</refentrytitle>
</refmeta>
<refnamediv>
<refname>SQL-WARNING</refname>
<refpurpose>the super-type of all
&clsql;-specific
warnings</refpurpose>
<refclass>Condition Type</refclass>
</refnamediv>
<refsect1>
<title>Class Precedence List</title>
<para>
<simplelist type="inline">
<member><link linkend="sql-warning"><errortype>sql-warning</errortype></link></member>
<member><errortype>warning</errortype></member>
<member><link linkend="sql-condition"><errortype>sql-condition</errortype></link></member>
<member><errortype>condition</errortype></member>
<member><errortype>t</errortype></member>
</simplelist>
</para>
</refsect1>
<refsect1>
<title>Description</title>
<para>
This is the super-type of all &clsql;-specific conditions that
represent warnings, as defined by &clsql;, or any of it's
database-specific interfaces. There are no defined
initialization arguments nor any accessors.
</para>
</refsect1>
<refsect1>
<title>Notes</title>
<para><errortype>sql-warning</errortype> is a &clsql; extension.</para>
</refsect1>
</refentry>
<refentry id="sql-database-warning">
<refmeta>
<refentrytitle>SQL-DATABASE-WARNING</refentrytitle>
</refmeta>
<refnamediv>
<refname>SQL-DATABASE-WARNING</refname>
<refpurpose>Used to warn while accessing a
&clsql; database.</refpurpose>
<refclass>Condition Type</refclass>
</refnamediv>
<refsect1>
<title>Class Precedence List</title>
<para>
<simplelist type="inline">
<member><link linkend="sql-database-warning"><errortype>sql-database-warning</errortype></link></member>
<member><link linkend="sql-warning"><errortype>sql-warning</errortype></link></member>
<member><errortype>warning</errortype></member>
<member><link linkend="sql-condition"><errortype>sql-condition</errortype></link></member>
<member><errortype>condition</errortype></member>
<member><errortype>t</errortype></member>
</simplelist>
</para>
</refsect1>
<refsect1>
<title>Description</title>
<para>
This condition represents warnings signalled while accessing
a database.
</para>
<para>
The following initialization arguments and accessors exist:
</para>
<segmentedlist>
<segtitle>Initarg</segtitle>
<segtitle>Accessor</segtitle>
<segtitle>Description</segtitle>
<seglistitem>
<seg><symbol>:database</symbol></seg>
<seg><function>sql-warning-database</function></seg>
<seg>The database object that was involved in the
incident.</seg>
</seglistitem>
</segmentedlist>
</refsect1>
<refsect1>
<title>Notes</title>
<para><errortype>sql-database-warning</errortype> is a &clsql;
extension.</para>
</refsect1>
</refentry>
<!-- Specific Conditions -->
<refentry id="sql-user-error">
<refmeta>
<refentrytitle>SQL-USER-ERROR</refentrytitle>
</refmeta>
<refnamediv>
<refname>SQL-USER-ERROR</refname>
<refpurpose>condition representing errors because of invalid
parameters from the library user.</refpurpose>
<refclass>Condition Type</refclass>
</refnamediv>
<refsect1>
<title>Class Precedence List</title>
<para>
<simplelist type="inline">
<member><errortype>sql-user-error</errortype></member>
<member><link linkend="sql-error"><errortype>sql-error</errortype></link></member>
<member><errortype>simple-error</errortype></member>
<member><errortype>simple-condition</errortype></member>
<member><errortype>error</errortype></member>
<member><errortype>serious-condition</errortype></member>
<member><link linkend="sql-condition"><errortype>sql-condition</errortype></link></member>
<member><errortype>condition</errortype></member>
<member><errortype>t</errortype></member>
</simplelist>
</para>
</refsect1>
<refsect1>
<title>Description</title>
<para>
This condition represents errors that occur because the user
supplies invalid data to &clsql;. This includes errors such
as an invalid format connection specification or an error in
the syntax for the <function>LOOP</function> macro extensions.
</para>
<para>
The following initialization arguments and accessors exist:
</para>
<segmentedlist>
<segtitle>Initarg</segtitle>
<segtitle>Accessor</segtitle>
<segtitle>Description</segtitle>
<seglistitem>
<seg><symbol>:message</symbol></seg>
<seg><function>sql-user-error-message</function></seg>
<seg>The error message.</seg>
</seglistitem>
</segmentedlist>
</refsect1>
<refsect1>
<title>Notes</title>
<para>The slot accessor
<function>sql-user-error-message</function> is a &clsql;
extension.</para>
</refsect1>
</refentry>
<refentry id="sql-database-error">
<refmeta>
<refentrytitle>SQL-DATABASE-ERROR</refentrytitle>
</refmeta>
<refnamediv>
<refname>SQL-DATABASE-ERROR</refname>
<refpurpose>condition representing errors during query or
command execution</refpurpose>
<refclass>Condition Type</refclass>
</refnamediv>
<refsect1>
<title>Class Precedence List</title>
<para>
<simplelist type="inline">
<member><link linkend="sql-database-error"><errortype>sql-database-error</errortype></link></member>
<member><link linkend="sql-error"><errortype>sql-error</errortype></link></member>
<member><errortype>simple-error</errortype></member>
<member><errortype>simple-condition</errortype></member>
<member><errortype>error</errortype></member>
<member><errortype>serious-condition</errortype></member>
<member><link linkend="sql-condition"><errortype>sql-condition</errortype></link></member>
<member><errortype>condition</errortype></member>
<member><errortype>t</errortype></member>
</simplelist>
</para>
</refsect1>
<refsect1>
<title>Description</title>
<para>
This condition represents errors that occur while executing
SQL statements, either as part of query operations or command
execution, either explicitly or implicitly, as caused e.g. by
<function>with-transaction</function>.
</para>
<para>
The following initialization arguments and accessors exist:
</para>
<segmentedlist>
<segtitle>Initarg</segtitle>
<segtitle>Accessor</segtitle>
<segtitle>Description</segtitle>
<seglistitem>
<seg><symbol>:database</symbol></seg>
<seg><function>sql-error-database</function></seg>
<seg>The database object that was involved in the
incident.</seg>
</seglistitem>
<seglistitem>
<seg><symbol>:error-id</symbol></seg>
<seg><function>sql-error-error-id</function></seg>
<seg>The numeric or symbolic error specification
returned by the database back-end. The values and
semantics of this are interface specific.</seg>
</seglistitem>
<seglistitem>
<seg><symbol>:secondary-error-id</symbol></seg>
<seg><function>sql-error-secondary-error-id</function></seg>
<seg>The secondary numeric or symbolic error specification
returned by the database back-end. The values and
semantics of this are interface specific.</seg>
</seglistitem>
<seglistitem>
<seg><symbol>:message</symbol></seg>
<seg><function>sql-error-database-message</function></seg>
<seg>A string describing the problem that occurred,
possibly one returned by the database back-end.</seg>
</seglistitem>
</segmentedlist>
</refsect1>
<refsect1>
<title>Notes</title>
<para>
The slot accessor
<function>sql-error-database</function> is a &clsql;
extension.
</para>
</refsect1>
</refentry>
<refentry id="sql-connection-error">
<refmeta>
<refentrytitle>SQL-CONNECTION-ERROR</refentrytitle>
</refmeta>
<refnamediv>
<refname>SQL-CONNECTION-ERROR</refname>
<refpurpose>condition representing errors during
connection</refpurpose>
<refclass>Condition Type</refclass>
</refnamediv>
<refsect1>
<title>Class Precedence List</title>
<para>
<simplelist type="inline">
<member><link linkend="sql-connection-error"><errortype>sql-connection-error</errortype></link></member>
<member><link linkend="sql-database-error"><errortype>sql-database-error</errortype></link></member>
<member><link linkend="sql-error"><errortype>sql-error</errortype></link></member>
<member><errortype>simple-error</errortype></member>
<member><errortype>simple-condition</errortype></member>
<member><errortype>error</errortype></member>
<member><errortype>serious-condition</errortype></member>
<member><link linkend="sql-condition"><errortype>sql-condition</errortype></link></member>
<member><errortype>condition</errortype></member>
<member><errortype>t</errortype></member>
</simplelist>
</para>
</refsect1>
<refsect1>
<title>Description</title>
<para>
This condition represents errors that occur while trying to
connect to a database.
</para>
<para>
The following initialization arguments and accessors exist:
</para>
<segmentedlist>
<segtitle>Initarg</segtitle>
<segtitle>Accessor</segtitle>
<segtitle>Description</segtitle>
<seglistitem>
<seg><symbol>:database-type</symbol></seg>
<seg><function>sql-error-database-type</function></seg>
<seg>Database type for the connection attempt</seg>
</seglistitem>
<seglistitem>
<seg><symbol>:connection-spec</symbol></seg>
<seg><function>sql-error-connection-spec</function></seg>
<seg>The connection specification used in the
connection attempt.</seg>
</seglistitem>
<seglistitem>
<seg><symbol>:database</symbol></seg>
<seg><function>sql-error-database</function></seg>
<seg>The database object that was involved in the
incident.</seg>
</seglistitem>
<seglistitem>
<seg><symbol>:error-id</symbol></seg>
<seg><function>sql-error-error-id</function></seg>
<seg>The numeric or symbolic error specification
returned by the database back-end. The values and
semantics of this are interface specific.</seg>
</seglistitem>
<seglistitem>
<seg><symbol>:secondary-error-id</symbol></seg>
<seg><function>sql-error-secondary-error-id</function></seg>
<seg>The secondary numeric or symbolic error specification
returned by the database back-end. The values and
semantics of this are interface specific.</seg>
</seglistitem>
<seglistitem>
<seg><symbol>:message</symbol></seg>
<seg><function>sql-database-error-error</function></seg>
<seg>A string describing the problem that occurred,
possibly one returned by the database back-end.</seg>
</seglistitem>
</segmentedlist>
</refsect1>
<refsect1>
<title>Notes</title>
<para>
The slot accessors
<function>sql-error-database</function>,
<function>sql-error-database-type</function> and
<function>sql-error-connection-spec</function> are
&clsql; extensions.
</para>
</refsect1>
</refentry>
<refentry id="sql-database-data-error">
<refmeta>
<refentrytitle>SQL-DATABASE-DATA-ERROR</refentrytitle>
</refmeta>
<refnamediv>
<refname>SQL-DATABASE-DATA-ERROR</refname>
<refpurpose>Used to signal an error with the SQL data passed
to a database.</refpurpose>
<refclass>Condition Type</refclass>
</refnamediv>
<refsect1>
<title>Class Precedence List</title>
<para>
<simplelist type="inline">
<member><errortype>sql-database-data-error</errortype></member>
<member><link linkend="sql-database-error"><errortype>sql-database-error</errortype></link></member>
<member><link linkend="sql-error"><errortype>sql-error</errortype></link></member>
<member><errortype>simple-error</errortype></member>
<member><errortype>simple-condition</errortype></member>
<member><errortype>error</errortype></member>
<member><errortype>serious-condition</errortype></member>
<member><link linkend="sql-condition"><errortype>sql-condition</errortype></link></member>
<member><errortype>condition</errortype></member>
<member><errortype>t</errortype></member>
</simplelist>
</para>
</refsect1>
<refsect1>
<title>Description</title>
<para>This condition represents errors that occur while
executing SQL statements, specifically as a result of
malformed SQL expressions.
</para>
<para>
The following initialization arguments and accessors exist:
</para>
<segmentedlist>
<segtitle>Initarg</segtitle>
<segtitle>Accessor</segtitle>
<segtitle>Description</segtitle>
<seglistitem>
<seg><symbol>:expression</symbol></seg>
<seg><function>sql-error-expression</function></seg>
<seg>The SQL expression whose execution caused the error.</seg>
</seglistitem>
<seglistitem>
<seg><symbol>:database</symbol></seg>
<seg><function>sql-error-database</function></seg>
<seg>The database object that was involved in the
incident.</seg>
</seglistitem>
<seglistitem>
<seg><symbol>:error-id</symbol></seg>
<seg><function>sql-error-error-id</function></seg>
<seg>The numeric or symbolic error specification
returned by the database back-end. The values and
semantics of this are interface specific.</seg>
</seglistitem>
<seglistitem>
<seg><symbol>:secondary-error-id</symbol></seg>
<seg><function>sql-error-secondary-error-id</function></seg>
<seg>The secondary numeric or symbolic error specification
returned by the database back-end. The values and
semantics of this are interface specific.</seg>
</seglistitem>
<seglistitem>
<seg><symbol>:message</symbol></seg>
<seg><function>sql-error-database-message</function></seg>
<seg>A string describing the problem that occurred,
possibly one returned by the database back-end.</seg>
</seglistitem>
</segmentedlist>
</refsect1>
<refsect1>
<title>Notes</title>
<para>
The slot accessors
<function>sql-error-database</function> and
<function>sql-error-expression</function> are
&clsql; extensions.
</para>
</refsect1>
</refentry>
<refentry id="sql-temporary-error">
<refmeta>
<refentrytitle>SQL-TEMPORARY-ERROR</refentrytitle>
</refmeta>
<refnamediv>
<refname>SQL-TEMPORARY-ERROR</refname>
<refpurpose>Used to signal a temporary error in the database
backend.</refpurpose>
<refclass>Condition Type</refclass>
</refnamediv>
<refsect1>
<title>Class Precedence List</title>
<para>
<simplelist type="inline">
<member><errortype>sql-temporary-error</errortype></member>
<member><link linkend="sql-database-error"><errortype>sql-database-error</errortype></link></member>
<member><link linkend="sql-error"><errortype>sql-error</errortype></link></member>
<member><errortype>simple-error</errortype></member>
<member><errortype>simple-condition</errortype></member>
<member><errortype>error</errortype></member>
<member><errortype>serious-condition</errortype></member>
<member><link linkend="sql-condition"><errortype>sql-condition</errortype></link></member>
<member><errortype>condition</errortype></member>
<member><errortype>t</errortype></member>
</simplelist>
</para>
</refsect1>
<refsect1>
<title>Description</title>
<para>
This condition represents errors occurring when the database
cannot currently process a valid interaction because, for
example, it is still executing another command possibly issued
by another user.
</para>
<para>
The following initialization arguments and accessors exist:
</para>
<segmentedlist>
<segtitle>Initarg</segtitle>
<segtitle>Accessor</segtitle>
<segtitle>Description</segtitle>
<seglistitem>
<seg><symbol>:database</symbol></seg>
<seg><function>sql-error-database</function></seg>
<seg>The database object that was involved in the
incident.</seg>
</seglistitem>
<seglistitem>
<seg><symbol>:error-id</symbol></seg>
<seg><function>sql-error-error-id</function></seg>
<seg>The numeric or symbolic error specification
returned by the database back-end. The values and
semantics of this are interface specific.</seg>
</seglistitem>
<seglistitem>
<seg><symbol>:secondary-error-id</symbol></seg>
<seg><function>sql-error-secondary-error-id</function></seg>
<seg>The secondary numeric or symbolic error specification
returned by the database back-end. The values and
semantics of this are interface specific.</seg>
</seglistitem>
<seglistitem>
<seg><symbol>:message</symbol></seg>
<seg><function>sql-error-database-message</function></seg>
<seg>A string describing the problem that occurred,
possibly one returned by the database back-end.</seg>
</seglistitem>
</segmentedlist>
</refsect1>
<refsect1>
<title>Notes</title>
<para>
The slot accessor
<function>sql-error-database</function> is a &clsql;
extension.
</para>
</refsect1>
</refentry>
<refentry id="sql-timeout-error">
<refmeta>
<refentrytitle>SQL-TIMEOUT-ERROR</refentrytitle>
</refmeta>
<refnamediv>
<refname>SQL-TIMEOUT-ERROR</refname>
<refpurpose>condition representing errors when a connection
times out.</refpurpose>
<refclass>Condition Type</refclass>
</refnamediv>
<refsect1>
<title>Class Precedence List</title>
<para>
<simplelist type="inline">
<member><link linkend="sql-connection-error"><errortype>sql-connection-error</errortype></link></member>
<member><link linkend="sql-database-error"><errortype>sql-database-error</errortype></link></member>
<member><link linkend="sql-error"><errortype>sql-error</errortype></link></member>
<member><errortype>simple-error</errortype></member>
<member><errortype>simple-condition</errortype></member>
<member><errortype>error</errortype></member>
<member><errortype>serious-condition</errortype></member>
<member><link linkend="sql-condition"><errortype>sql-condition</errortype></link></member>
<member><errortype>condition</errortype></member>
<member><errortype>t</errortype></member>
</simplelist>
</para>
</refsect1>
<refsect1>
<title>Description</title>
<para>This condition represents errors that occur when the
database times out while processing some operation. The
following initialization arguments and accessors exist:</para>
<segmentedlist>
<segtitle>Initarg</segtitle>
<segtitle>Accessor</segtitle>
<segtitle>Description</segtitle>
<seglistitem>
<seg><symbol>:database-type</symbol></seg>
<seg><function>sql-error-database-type</function></seg>
<seg>Database type for the connection attempt</seg>
</seglistitem>
<seglistitem>
<seg><symbol>:connection-spec</symbol></seg>
<seg><function>sql-error-connection-spec</function></seg>
<seg>The connection specification used in the
connection attempt.</seg>
</seglistitem>
<seglistitem>
<seg><symbol>:database</symbol></seg>
<seg><function>sql-error-database</function></seg>
<seg>The database object that was involved in the
incident.</seg>
</seglistitem>
<seglistitem>
<seg><symbol>:error-id</symbol></seg>
<seg><function>sql-error-error-id</function></seg>
<seg>The numeric or symbolic error specification
returned by the database back-end. The values and
semantics of this are interface specific.</seg>
</seglistitem>
<seglistitem>
<seg><symbol>:secondary-error-id</symbol></seg>
<seg><function>sql-error-secondary-error-id</function></seg>
<seg>The secondary numeric or symbolic error specification
returned by the database back-end. The values and
semantics of this are interface specific.</seg>
</seglistitem>
<seglistitem>
<seg><symbol>:message</symbol></seg>
<seg><function>sql-error-database-message</function></seg>
<seg>A string describing the problem that occurred,
possibly one returned by the database back-end.</seg>
</seglistitem>
</segmentedlist>
</refsect1>
<refsect1>
<title>Notes</title>
<para>
The slot accessors
<function>sql-error-database</function>,
<function>sql-error-database-type</function> and
<function>sql-error-connection-spec</function> are
&clsql; extensions.
</para>
</refsect1>
</refentry>
<refentry id="sql-fatal-error">
<refmeta>
<refentrytitle>SQL-FATAL-ERROR</refentrytitle>
</refmeta>
<refnamediv>
<refname>SQL-FATAL-ERROR</refname>
<refpurpose>condition representing a fatal error in a database
connection</refpurpose>
<refclass>Condition Type</refclass>
</refnamediv>
<refsect1>
<title>Class Precedence List</title>
<para>
<simplelist type="inline">
<member><link linkend="sql-connection-error"><errortype>sql-connection-error</errortype></link></member>
<member><link linkend="sql-database-error"><errortype>sql-database-error</errortype></link></member>
<member><link linkend="sql-error"><errortype>sql-error</errortype></link></member>
<member><errortype>simple-error</errortype></member>
<member><errortype>simple-condition</errortype></member>
<member><errortype>error</errortype></member>
<member><errortype>serious-condition</errortype></member>
<member><link linkend="sql-condition"><errortype>sql-condition</errortype></link></member>
<member><errortype>condition</errortype></member>
<member><errortype>t</errortype></member>
</simplelist>
</para>
</refsect1>
<refsect1>
<title>Description</title>
<para>This condition represents errors occurring when the
database connection is no longer usable.
</para>
<para>
The following initialization arguments and accessors exist:
</para>
<segmentedlist>
<segtitle>Initarg</segtitle>
<segtitle>Accessor</segtitle>
<segtitle>Description</segtitle>
<seglistitem>
<seg><symbol>:database-type</symbol></seg>
<seg><function>sql-error-database-type</function></seg>
<seg>Database type for the connection attempt</seg>
</seglistitem>
<seglistitem>
<seg><symbol>:connection-spec</symbol></seg>
<seg><function>sql-error-connection-spec</function></seg>
<seg>The connection specification used in the
connection attempt.</seg>
</seglistitem>
<seglistitem>
<seg><symbol>:database</symbol></seg>
<seg><function>sql-error-database</function></seg>
<seg>The database object that was involved in the
incident.</seg>
</seglistitem>
<seglistitem>
<seg><symbol>:error-id</symbol></seg>
<seg><function>sql-error-error-id</function></seg>
<seg>The numeric or symbolic error specification
returned by the database back-end. The values and
semantics of this are interface specific.</seg>
</seglistitem>
<seglistitem>
<seg><symbol>:secondary-error-id</symbol></seg>
<seg><function>sql-error-secondary-error-id</function></seg>
<seg>The secondary numeric or symbolic error specification
returned by the database back-end. The values and
semantics of this are interface specific.</seg>
</seglistitem>
<seglistitem>
<seg><symbol>:message</symbol></seg>
<seg><function>sql-error-database-message</function></seg>
<seg>A string describing the problem that occurred,
possibly one returned by the database back-end.</seg>
</seglistitem>
</segmentedlist>
</refsect1>
<refsect1>
<title>Notes</title>
<para>
The slot accessors
<function>sql-error-database</function>,
<function>sql-error-database-type</function> and
<function>sql-error-connection-spec</function> are
&clsql; extensions.
</para>
</refsect1>
</refentry>
</reference>
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