NAME¶

Alzabo::Exceptions - Creates all exception subclasses used in Alzabo.

SYNOPSIS¶

  use Alzabo::Exceptions;

DESCRIPTION¶

Using this class creates all the exceptions classes used by Alzabo (via the "Exception::Class" class). See "Exception::Class" for more information on how this is done.

EXCEPTION CLASSES¶

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Alzabo::Exception

This is the base class for all exceptions generated within Alzabo (all exceptions should return true for "$@->isa('Alzabo::Exception')" except those that are generated via internal Perl errors).

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Alzabo::Exception::Driver

An error occured while accessing a database. See "Alzabo::Driver" for more details.

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Alzabo::Exception::Eval

An attempt to eval something returned an error.

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Alzabo::Exception::Logic

Alzabo was asked to do something logically impossible, like retrieve rows for a table without a primary key.

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Alzabo::Exception::NoSuchRow

An attempt was made to fetch data from the database with a primary key that does not actually exist in the specified table.

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Alzabo::Exception::NotNullable

An attempt was made to set a non-nullable column to "NULL". The "column_name", "table_name", and "schema_name" fields can be used to identify the exact column.

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Alzabo::Exception::Panic

This exception is thrown when something completely unexpected happens (think Monty Python).

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Alzabo::Exception::Params

This exception is thrown when there is a problem with the parameters passed to a method or function. These problems can include missing parameters, invalid values, etc.

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Alzabo::Exception::RDBMSRules

A rule for the relevant RDBMS was violated (bad schema name, table name, column attribute, etc.)

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Alzabo::Exception::ReferentialIntegrity

An insert/update/delete was attempted that would violate referential integrity constraints.

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Alzabo::Exception::SQL

An error thrown when there is an attempt to generate invalid SQL via the Alzabo::SQLMaker module.

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Alzabo::Exception::Storable

A error when trying to freeze, thaw, or clone an object using Storable.

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Alzabo::Exception::System

Some sort of system call (file read/write, stat, etc.) failed.

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Alzabo::Exception::VirtualMethod

A virtual method was called. This indicates that this method should be subclassed.

AUTHOR¶

Dave Rolsky, <autarch@urth.org>