Digging Through The Guts Of Enterprise Php

Digging Through the Guts of Enterprise PHP 9/19/08 10:58 AM 1. Digging Through the Guts of Enterprise PHP A Case Study Shawn Lauriat IBM Rational Build Forge 2. Introductions Me Advisory Engineer, Lead UI/G11N Developer @ IBM Rational Build Forge Author, Advanced Ajax: Architectures and Best Practices http://frozen-o.com/blog/ Build Forge quot;It automates and accelerates build and release processes through server pooling and fault tolerance for Agile development and streamlined software delivery.quot; a.k.a. process automation tool 3. Disclaimer The views expressed in this commentary are the author's own and do not necessarily reflect those of IBM. 4. Overview I will not: Teach you to use PHP5 features I will: Show PHP5 features' usefulness Show PHP5 features in code Show PHP5 features in action 5. Interfaces http://localhost/enterpriseguts/ Page 1 of 6

Digging Through the Guts of Enterprise PHP 9/19/08 10:58 AM class -> Instance Definition interface -> Instance Requirements Definition interface + type hinting = more stable code with less effort 6. BuildForge_Services_Serializable /** Used for object transportation */ interface BuildForge_Services_Serializable { /** @param array|null $data */ public function fromArray(array $data = null); /** @return array */ public function toArray(); } 7. BuildForge_Services_DBO_Snapshottable /** Create snapshot metadata */ $snapshot = BuildForge_Services_DBO_Snapshot::createSnapshot( $services, quot;My New Snapshotquot;, quot;A Comment about My New Snapshotquot; ); /** Get a new snapshot of the $originalOne */ return $originalOne->snapshot( $snapshot->getUuid(), new BuildForge_Services_DBO_SnapshotRequest(true), false ); 8. Inheritance BuildForge_Services_DBO_Project http://localhost/enterpriseguts/ Page 2 of 6

Digging Through the Guts of Enterprise PHP 9/19/08 10:58 AM Fields Custom Methods implements BuildForge_Services_DBO_Snapshottable extends BuildForge_Services_UUIDDBO ::getUuid() ::isLive() extends BuildForge_Services_DBO implements BuildForge_Services_Serializable ::__construct() 9. Iterators interface Iterator extends Traversable { function rewind(); function current(); function key(); function next(); function valid(); } 10. Using Iterators for scalability The Class Tree Iterator OuterIterator BuildForge_Services_Iterator BuildForge_Services_ProjectIterator Iterator BuildForge_Services_ValueIterator 11. Using Iterators for Scalability The Code http://localhost/enterpriseguts/ Page 3 of 6

Digging Through the Guts of Enterprise PHP 9/19/08 10:58 AM class BuildForge_Services_DBO_ProjectIterator extends BuildForge_Services_Iterator { public function current() { $current = parent::current(); if (empty($current)) return $current; $project = new BuildForge_Services_DBO_Project($this->conn); $project->fromArray($current); return $project; } } // Elsewhere in the app... $projects = BuildForge_Services_DBO_Project::iterateAll($services); foreach ($projects as $project) { // Do stuff } 12. Design Patterns 13. Model-View-Controller Code class Projects { public function render() { $projects = BuildForge_Services_DBO_Project http://localhost/enterpriseguts/ Page 4 of 6

Digging Through the Guts of Enterprise PHP 9/19/08 10:58 AM ::iterateFiltered( $this->services, $filter ); $this->view->register_object('listing', $projects); } } <tbody id=quot;listingquot;> <?php try { foreach ($_['listing'] as $project_instance) { print '<tr>'; // etc. print '</tr>'; } } catch (Exception $e) { /* do something */ } ?> </tbody> 14. Observer to Track State class BuildForge_ServicesConnection implements BuildForge_Strings_Localizer { protected function createResponse() { $this->mode = BUILDFORGE_SERVICES_MODE_READ; $response = new BuildForge_Services_JSONResponse($this); $response->attach($this); return $response; } public function update(SplSubject $subject) { $this->mode = BUILDFORGE_SERVICES_MODE_IDLE; } } 15. Observer to Track State class BuildForge_Services_Response extends BuildForge_Utilities_Observable { public function __destruct() { $this->readRemaining(); $this->notify(); } } http://localhost/enterpriseguts/ Page 5 of 6

Digging Through the Guts of Enterprise PHP 9/19/08 10:58 AM 16. Other PHP-Specific Additions __toString() for all DBOs print $project; /* prints: Project[projectId=5bd405d70c3f1000d081238b009625ac, level=6, name=Project One, class=58BB01F0-836A-11DD-A3D4- 8B1B7F9F254D, selectorId=5bd403da0c3f100086e8238b0043b5da, tag=BUILD_$B, envId=, active=1, snotify=0, pnotify=0, fnotify=0, maxThread=0, runLimit=0, tagSync=, sticky=, passChainId=, failChainId=, geoId=, isDefaultSnapshot=1, snapshotUuid=!Snapshot, snapshotSetUuid=5bd405d30c3f1000d080238b009625ac, parentUuid=, steps= <Step[stepUuid=5bd405de0c3f1000d082238b009625ac, projectId=5bd405d70c3f1000d081238b009625ac, stepId=1, envId=, filterId=, inlineChainId=, description=Step one, stepType=REGULAR, dir=/, passNotify=0, failNotify=0, onFail=HALT, selectorId=, threaded=NO, absolute=, timeout=300, maxIterations=100, level=0, broadcast=, commandText=echo quot;hiquot;, elseCommandText=, conditionText=, passChainId=, failChainId=, elseInlineId=, active=1, passWait=, failWait=]>] */ __clone() for clone keyword support $projectTwo = clone $projectOne; $projectTwo->setName('Look, a new Project!'); $projectTwo->create(); 17. These make my life easier Object-Oriented Inheritance Interfaces Type hinting Exceptions Iterators 18. What I can't wait to use next Namespaces Unicode Late Static Bindings Closures try { } catch { } finally { } (Please?) 19. Questions? http://localhost/enterpriseguts/ Page 6 of 6

Digging Through The Guts Of Enterprise Php

by ZendCon

Accessibility

Categories

Upload Details

Usage Rights

Statistics