<?php
/**
* Page DocBlock definition
* @package org.zadara.marius.pax
*/
/**
* Class definition for a hash-map.
* This class will contain associations between variables and theirs value.
*
* @author Marius Zadara <marius@zadara.org>
* @category Classes
* @copyright (C) 2008-2009 Marius Zadara
* @license Free for non-comercial use
* @package org.zadara.marius.pax
* @final
* @see PAXObject
* @see IConfig
* @version 6.0
* @since 5.0
*/
final class Config extends PAXObject implements IConfig
{
/**
* The hash-map associations array.
*
* @access private
* @var array
*/
private $hashmap;
/**
* Class constructor.
*
* @access public
*/
public function __construct()
{
// call the parent's constructor first
parent::__construct();
// init the hash-map
// at this moment set it to NULL to preserve memory
$this->hashmap = null;
}
/**
* Method to set a variable to a value in the hash-map.
* If the key already exists, the value wil be updated.
*
* @access public
* @param string <b>$variable</b> The variable name
* @param mixed <b>$value</b> The variable value
* @return void
*/
public function set($variable, $value)
{
// check the hash-map
if (is_null($this->hashmap))
$this->hashmap = array();
// set the variable to its value
$this->hashmap[$variable] = $value;
}
/**
* Method to get the variabile value from the hash-map.
*
* @access public
* @param string <b>$variable</b> The variable name
* @param mixed <b>$defaultValue</b> The variable default value (used in case the variabile has not been found)
* @return mixed The value of the variables as defined
*/
public function get($variable, $defaultValue=NULL)
{
// if the hash-map has not been set,
// return the default value
if (is_null($this->hashmap))
return $defaultValue;
// if the variable is not set in the hash-map,
// return the default value
if (!isset($this->hashmap[$variable]))
return $defaultValue;
// at this point, the variable is set
// return its value from the hash-map
return $this->hashmap[$variable];
}
/**
* Method to return only the keys.
*
* @access public
* @return array The list of all the keys
*/
public function getKeys()
{
if (is_null($this->hashmap))
return false;
if (!is_array($this->hashmap))
return false;
return array_keys($this->hashmap);
}
/**
* Method to return only the values.
*
* @access public
* @return array The list of all the values
*/
public function getValues()
{
if (is_null($this->hashmap))
return false;
if (!is_array($this->hashmap))
return false;
return array_values($this->hashmap);
}
/**
* Method to delete a key.
*
* @access public
* @param string <b>$key</b> The name of the key
* @return boolean True/False if the key has been deleted
*/
public function deleteKey($key)
{
if (is_null($this->hashmap))
return false;
if (!is_array($this->hashmap))
return false;
if (isset($this->hashmap[$key]))
{
unset($this->hashmap[$key]);
return true;
}
return false;
}
/**
* Method to delete the keys matching a pattern.
* The match is performed case insensitive.
*
* @access public
* @param string <b>$pattern</b> The pattern to use when searching for the keys
* @return boolean True/False if the key(s) has been deleted
*/
public function deleteKeysLike($pattern)
{
if (is_null($this->hashmap))
return false;
if (!is_array($this->hashmap))
return false;
$keysDeleted = false;
// parse the hash-map list
foreach ($this->hashmap as $keyName => $keyValue)
{
// search the pattern inside the key name
if (stripos($keyName, $pattern) !== false)
{
// if found, then try to delete the key
if ($this->deleteKey($keyName))
$keysDeleted = true;
}
}
return $keysDeleted;
}
/**
* Method to get the key-value pairs from the hash-map.
* Due to construction of the hash-map, will return the content of te hash-map.
*
* @access public
* @return array The object's content
*/
public function getKeyValuePairs()
{
if (is_null($this->hashmap))
return false;
if (!is_array($this->hashmap))
return false;
return $this->hashmap;
}
/**
* Method to search if a key exists.
*
* @access public
* @param string <b>$key</b> The key searched
* @return boolean True/False if the key has been found or not
*/
public function keyExists($key)
{
if (is_null($this->hashmap))
return false;
if (!is_array($this->hashmap))
return false;
return isset($this->hashmap[$key]);
}
/**
* Class destructor.
*
* @access public
*/
function __destruct()
{
// nothing special to do at this moment
}
}
?>
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