| Key: |
ZF-1139
|
| Type: |
New Feature
|
| Status: |
Resolved
|
| Resolution: |
Fixed
|
| Priority: |
Major
|
| Assignee: |
Darby Felton
|
| Reporter: |
Gavin
|
| Votes: |
0
|
| Watchers: |
2
|
|
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|
 Google issue summary
|
|
|
Zend Framework
Created: 26/Mar/07 01:56 PM
Updated: 19/Sep/07 02:19 PM
|
|
| Component/s: |
Zend_Session
|
| Affects Version/s: |
0.8.0,
0.9.0,
0.9.1
|
| Fix Version/s: |
0.9.3
|
|
Simple operations like counting and filtering are supported indirectly via Zend_Session_Namespace::getIterator() .
However, there are many other logical operations for set data types (e.g. Zend Framework session namespaces) that are not supported, including elementary "union". Thus, if a developer has an array of key => value pairs, the developer must iterate over the entire array, setting corresponding members in the desired namespace, one pair at a time.
require_once 'Zend/Session.php';
$namespace = new Zend_Session_Namespace('myspace');
$namespace->tree = 'cherry';
$namespace->rock = 'marble';
$namespace->apply(
'array_merge',
array('tree' => 'apple', 'fruit' => 'peach'),
array('flower' => 'rose'));
echo "After applySet(): ";
print_r($_SESSION);
$namespace->applySet(
'array_merge',
array('tree' => 'apple', 'fruit' => 'peach'),
array('flower' => 'rose'));
echo "After applySet(): ";
print_r($_SESSION);
Outputs:
After applySet(): Array
(
[myspace] => Array
(
[tree] => cherry
[rock] => marble
)
)
After applySet(): Array
(
[myspace] => Array
(
[tree] => apple
[rock] => marble
[fruit] => peach
[flower] => rose
)
)
As an experimental patch to explore possibilities, consider the following:
Index: Namespace.php
===================================================================
--- Namespace.php (revision 4225)
+++ Namespace.php (working copy)
@@ -255,6 +255,48 @@
/**
+ * apply() - enables applying user-selected function, such as array_merge() to the namespace
+ * Caveat: ignores members expiring now.
+ *
+ * Example:
+ * $namespace->apply('array_merge', array('tree' => 'apple', 'fruit' => 'peach'), array('flower' => 'rose'));
+ * $namespace->apply('count');
+ *
+ * @param string $callback - callback function
+ * @param mixed OPTIONAL arguments passed to the callback function
+ */
+ public function apply($callback)
+ {
+ $arg_list = func_get_args();
+ $arg_list[0] = $_SESSION[$this->_namespace];
+ return call_user_func_array($callback, $arg_list);
+ }
+
+
+ /**
+ * applySet() - enables applying user-selected function, and sets entire namespace to the result
+ * Result of $callback must be an array. Caveat: ignores members expiring now.
+ *
+ * Example:
+ * $namespace->applySet('array_merge', array('tree' => 'apple', 'fruit' => 'peach'), array('flower' => 'rose'));
+ *
+ * @param string $callback - callback function
+ * @param mixed OPTIONAL arguments passed to the callback function
+ */
+ public function applySet($callback)
+ {
+ $arg_list = func_get_args();
+ $arg_list[0] = $_SESSION[$this->_namespace];
+ $result = call_user_func_array($callback, $arg_list);
+ if (!is_array($result)) {
+ throw new Zend_Session_Exception("Result must be an array. Got: " . gettype($result));
+ }
+ $_SESSION[$this->_namespace] = $result;
+ return $result;
+ }
+
+
+ /**
* __isset() - determine if a variable in this object's namespace is set
*
* @param string $name - programmatic name of a key, in a <key,value> pair in the current namespace
Cleanup of metadata associated with session variables dropped by applySet(), if any, is not done in this patch, but should be added (i.e. todo).
|
|
Description
|
Simple operations like counting and filtering are supported indirectly via Zend_Session_Namespace::getIterator().
However, there are many other logical operations for set data types (e.g. Zend Framework session namespaces) that are not supported, including elementary "union". Thus, if a developer has an array of key => value pairs, the developer must iterate over the entire array, setting corresponding members in the desired namespace, one pair at a time.
require_once 'Zend/Session.php';
$namespace = new Zend_Session_Namespace('myspace');
$namespace->tree = 'cherry';
$namespace->rock = 'marble';
$namespace->apply(
'array_merge',
array('tree' => 'apple', 'fruit' => 'peach'),
array('flower' => 'rose'));
echo "After applySet(): ";
print_r($_SESSION);
$namespace->applySet(
'array_merge',
array('tree' => 'apple', 'fruit' => 'peach'),
array('flower' => 'rose'));
echo "After applySet(): ";
print_r($_SESSION);
Outputs:
After applySet(): Array
(
[myspace] => Array
(
[tree] => cherry
[rock] => marble
)
)
After applySet(): Array
(
[myspace] => Array
(
[tree] => apple
[rock] => marble
[fruit] => peach
[flower] => rose
)
)
As an experimental patch to explore possibilities, consider the following:
Index: Namespace.php
===================================================================
--- Namespace.php (revision 4225)
+++ Namespace.php (working copy)
@@ -255,6 +255,48 @@
/**
+ * apply() - enables applying user-selected function, such as array_merge() to the namespace
+ * Caveat: ignores members expiring now.
+ *
+ * Example:
+ * $namespace->apply('array_merge', array('tree' => 'apple', 'fruit' => 'peach'), array('flower' => 'rose'));
+ * $namespace->apply('count');
+ *
+ * @param string $callback - callback function
+ * @param mixed OPTIONAL arguments passed to the callback function
+ */
+ public function apply($callback)
+ {
+ $arg_list = func_get_args();
+ $arg_list[0] = $_SESSION[$this->_namespace];
+ return call_user_func_array($callback, $arg_list);
+ }
+
+
+ /**
+ * applySet() - enables applying user-selected function, and sets entire namespace to the result
+ * Result of $callback must be an array. Caveat: ignores members expiring now.
+ *
+ * Example:
+ * $namespace->applySet('array_merge', array('tree' => 'apple', 'fruit' => 'peach'), array('flower' => 'rose'));
+ *
+ * @param string $callback - callback function
+ * @param mixed OPTIONAL arguments passed to the callback function
+ */
+ public function applySet($callback)
+ {
+ $arg_list = func_get_args();
+ $arg_list[0] = $_SESSION[$this->_namespace];
+ $result = call_user_func_array($callback, $arg_list);
+ if (!is_array($result)) {
+ throw new Zend_Session_Exception("Result must be an array. Got: " . gettype($result));
+ }
+ $_SESSION[$this->_namespace] = $result;
+ return $result;
+ }
+
+
+ /**
* __isset() - determine if a variable in this object's namespace is set
*
* @param string $name - programmatic name of a key, in a <key,value> pair in the current namespace
Cleanup of metadata associated with session variables dropped by applySet(), if any, is not done in this patch, but should be added (i.e. todo). |
Show » |
|
Enable applying user-specified callbacks to namespaces
