info/DesignPatternsPHP
1
0
Fork 0
mirror of https://github.com/DesignPatternsPHP/DesignPatternsPHP.git synced 2025-08-03 21:47:25 +02:00
Code Issues Projects Releases Wiki Activity

documentation (commiting now from Guadeloupe)

Browse Source
This commit is contained in:
Trismegiste
2013-08-17 19:41:18 -04:00
parent 9a2536bc56
commit 67bdb9fede
3 changed files with 18 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
Visitor/Role.php
View File

@@ -9,13 +9,14 @@ namespace DesignPatterns\Visitor;
* The Visitor Pattern lets you outsource operations on objects to other objects. The main reason to do this is to keep * The Visitor Pattern lets you outsource operations on objects to other objects. The main reason to do this is to keep
* a seperation of concerns. But classes have to define an contract to allow visitors (the "accept" method in the example below). * a seperation of concerns. But classes have to define an contract to allow visitors (the "accept" method in the example below).
* *
* The contract is an abstract class but you can have also a clean interface * The contract is an abstract class but you can have also a clean interface.
* In that case, each Visitee has to choose itself which method to invoke on the visitor.
*/ */
abstract class Role abstract class Role
{ {
/** /**
* This method handle a double dispatch based on the shortname of the Visitee * This method handles a double dispatch based on the shortname of the Visitee
* *
* Feel free to override it if your object must call another visiting behavior * Feel free to override it if your object must call another visiting behavior
* *

8
Visitor/RolePrintVisitor.php
View File

@@ -5,16 +5,22 @@ namespace DesignPatterns\Visitor;
/** /**
* Visitor Pattern * Visitor Pattern
* *
* An implementation of a Visitor * An implementation of a concrete Visitor
*/ */
class RolePrintVisitor implements RoleVisitor class RolePrintVisitor implements RoleVisitor
{ {
/**
* @inheritdoc
*/
public function visitGroup(Group $role) public function visitGroup(Group $role)
{ {
echo "Role: " . $role->getName(); echo "Role: " . $role->getName();
} }
/**
* @inheritdoc
*/
public function visitUser(User $role) public function visitUser(User $role)
{ {
echo "Role: " . $role->getName(); echo "Role: " . $role->getName();

10
Visitor/RoleVisitor.php
View File

@@ -5,13 +5,19 @@ namespace DesignPatterns\Visitor;
/** /**
* Visitor Pattern * Visitor Pattern
* *
* The contract for the visitor * The contract for the visitor.
*
* Note 1 : in C++ or java, with method polymorphism based on type-hint, there are many
* methods visit() with different type for the 'role' parameter.
*
* Note 2 : the visitor must not choose itself which method to
* invoke, it is the Visitee that make this decision.
*/ */
interface RoleVisitor interface RoleVisitor
{ {
/** /**
* Visit a user object * Visit a User object
* *
* @param \DesignPatterns\Visitor\User $role * @param \DesignPatterns\Visitor\User $role
*/ */