Upgrading to schema v1.1

Upgrading Models from Schema Version 1.0 to 1.1¶

In xPDO 2.0.0-rc3, a new schema element for describing table indexes was added to the object element of the xPDO schema. To maintain backwards compatibility in the runtime code with older schemas, where the indexes were described using the index and index_group attributes of the field elements, schemas created with this new element must be differentiated from the older schemas. As a result, the version attribute was added to the model element with a value of 1.1. All legacy models without the version element are assumed to be version 1.0.

To make conversion of existing mysql models easier, a tool is provided in xPDO that can be executed from the command line or a browser.

xpdo/tools/schema/upgrade-mysql-1.1.php¶

This simple tool takes a few arguments and automatically converts your 1.0 model's index definitions to the 1.1 format and adds version="1.1" to the model element.

• Required Arguments
  • pkg — The name of the model package being converted.
  • pkg_path — The root path of the model package.
  • schema_name — The xPDO schema filename to convert.
  • schema_path — The path to the schema file.
• Optional Arguments
  • backup_path — The path to write the backup schema file. If not specified, the backup is written to the same directory (schema_path).
  • backup_prefix — A string to prepend to the backup schema file. Default is '~'.
  • dsn — A valid PDO DSN connection string.
  • dbuser — A valid database user with access to the specified DSN.
  • dbpass — The password for the specified dbuser.
  • regen — If true, will regenerate the model after the schema is updated.
  • write — If true, will write the updated schema to file and backup the original.
  • echo — If true, will echo the updated schema to STDOUT.
  • debug — Sets the debug level of xPDO; if true, echo is automatically set true.
  • include — An external properties file to include arguments from.
  • error_reporting — Set the PHP error_reporting level for the script. Default is -1 (does not report errors).
  • display_errors — Set the PHP display_errors setting. Default is true.

Argument Rules¶

• At least one of the four arguments, echo, write, regen, or debug, must be set.
• The write argument cannot be used when the debug argument is true.
• regen can only be used when write is set or the schema is already at version 1.1.

Usage¶

realpath() used on path arguments All values for _path arguments (and the include argument) are passed through realpath().

Running as CLI script¶

CLI arguments for the script are specified in the format:

--argument[=value]

boolean arguments If the equal sign and value are not provided, the argument value is set to boolean true.

Here is an example CLI usage:

user@hostname:/home/user/xpdo$ php xpdo/tools/schema/upgrade-mysql-1.1.php --pkg=sample --pkg_path=models/ --schema_name=sample.mysql.schema.xml --schema_path=schemas/ --echo --write --regen

Alternatively, you can use the include argument to set properties from an external file.

An example properties file, sample.schema.properties.php:

<?php
$pkg='sample';
$pkg_path='models/';
$schema_name='sample.mysql.schema.xml';
$schema_path='schemas/';
$echo=true;
$write=true;
$regen=true;

And the example CLI call to use the properties file:

user@hostname:/home/user/xpdo$ php xpdo/tools/schema/upgrade-mysql-1.1.php --include=sample.schema.properties.php

CLI arguments override properties file Please note that any arguments provided in the CLI call will override values set in and included from the properties file.

Running as web request¶

You can also execute the script as a web request, passing the arguments as $_REQUEST variables, $_GET, $_POST, or $_COOKIE. An example URL for such a call might look like this:

http://localhost/food/xpdo/tools/schema/upgrade-mysql-1.1.php?pkg=sample&pkg_path=models/&schema_name=sample.mysql.schema.xml&schema_path=schemas/&echo=true&write=true&regen=true

boolean arguments To set a boolean value of true, make sure you pass the string 'true', otherwise the value is assumed to be boolean false.