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<?php
require_once 'thirdparty/spyc/spyc.php';
/**
* Uses the Spyc library to parse a YAML document (see http://yaml.org).
* YAML is a simple markup languages that uses tabs and colons instead of the more verbose XML tags,
* and because of this much better for developers creating files by hand.
*
* The contents of the YAML file are broken into three levels:
* - Top level: class names - Page and ErrorPage. This is the name of the dataobject class that should be created.
* The fact that ErrorPage is actually a subclass is irrelevant to the system populating the database.
* Each identifier you specify delimits a new database record.
* This means that every record needs to have an identifier, whether you use it or not.
* - Third level: fields - each field for the record is listed as a 3rd level entry.
* In most cases, the field's raw content is provided.
* However, if you want to define a relationship, you can do so using "=>"
*
* There are a couple of lines like this:
* <code>
* Parent: =>Page.about
* </code>
* This will tell the system to set the ParentID database field to the ID of the Page object with the identifier
* 'about'. This can be used on any has-one or many-many relationship.
* Note that we use the name of the relationship (Parent), and not the name of the database field (ParentID)
*
* On many-many relationships, you should specify a comma separated list of values.
* <code>
* MyRelation: =>Class.inst1,=>Class.inst2,=>Class.inst3
* </code>
*
* An crucial thing to note is that the YAML file specifies DataObjects, not database records.
* The database is populated by instantiating DataObject objects, setting the fields listed, and calling write().
* This means that any onBeforeWrite() or default value logic will be executed as part of the test.
* This forms the basis of our testURLGeneration() test above.
*
* For example, the URLSegment value of Page.staffduplicate is the same as the URLSegment value of Page.staff.
* When the fixture is set up, the URLSegment value of Page.staffduplicate will actually be my-staff-2.
*
* Finally, be aware that requireDefaultRecords() is not called by the database populator -
* so you will need to specify standard pages such as 404 and home in your YAML file.
*
* <code>
* Page:
* home:
* Title: Home
* about:
* Title: About Us
* staff:
* Title: Staff
* URLSegment: my-staff
* Parent: =>Page.about
* staffduplicate:
* Title: Staff
* URLSegment: my-staff
* Parent: =>Page.about
* products:
* Title: Products
* ErrorPage:
* 404:
* Title: Page not Found
* ErrorCode: 404
* </code>
*
* @package framework
* @subpackage core
*
* @see http://code.google.com/p/spyc/
*/
class YamlFixture extends Object {
/**
* Absolute path to the .yml fixture file
*
* @var string
*/
protected $fixtureFile;
/**
* String containing fixture
*
* @var String
*/
protected $fixtureString;
/**
* @param String Absolute file path, or relative path to {@link Director::baseFolder()}
*/
public function __construct($fixture) {
if(false !== strpos($fixture, "\n")) {
$this->fixtureString = $fixture;
} else {
if(!Director::is_absolute($fixture)) $fixture = Director::baseFolder().'/'. $fixture;
if(!file_exists($fixture)) {
throw new InvalidArgumentException('YamlFixture::__construct(): Fixture path "' . $fixture
. '" not found');
}
$this->fixtureFile = $fixture;
}
parent::__construct();
}
/**
* @return String Absolute file path
*/
public function getFixtureFile() {
return $this->fixtureFile;
}
/**
* @return String Fixture string
*/
public function getFixtureString() {
return $this->fixtureString;
}
/**
* Persists the YAML data in a FixtureFactory,
* which in turn saves them into the database.
* Please use the passed in factory to access the fixtures afterwards.
*
* @param FixtureFactory $factory
*/
public function writeInto(FixtureFactory $factory) {
$parser = new Spyc();
if (isset($this->fixtureString)) {
$fixtureContent = $parser->load($this->fixtureString);
} else {
$fixtureContent = $parser->loadFile($this->fixtureFile);
}
foreach($fixtureContent as $class => $items) {
foreach($items as $identifier => $data) {
if(ClassInfo::exists($class)) {
$factory->createObject($class, $identifier, $data);
} else {
$factory->createRaw($class, $identifier, $data);
}
}
}
}
}
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