96 lines
2.3 KiB
PHP
96 lines
2.3 KiB
PHP
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<?php
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/**
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* Icinga Backend Abstract
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*
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* @package Icinga\Backend
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*/
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namespace Icinga\Backend;
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use Icinga\Application\Config;
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abstract class AbstractBackend
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{
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protected $config;
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protected $extensions = array();
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/**
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* Backend constructor, should not be overwritten
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*
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* Makes sure that $this->config exists. Config is a Zend_Config
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* object right now, only the main Config is an Icinga one
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*
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* return void
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*/
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final public function __construct(\Zend_Config $config = null)
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{
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if ($config == null)
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$config = new \Zend_Config(array());
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$this->config = $config;
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$this->init();
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}
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/**
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* Override this function for initialization tasks
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*
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* return void
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*/
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protected function init() {}
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/**
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* Dummy function for fluent code
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*
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* return \Icinga\Backend\Ido
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*/
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public function select()
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{
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return $this;
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}
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/**
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* Create a Query object instance for given virtual table and desired fields
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*
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* Leave fields empty to get all available properties
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*
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* @param string Virtual table name
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* @param array Fields
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* return \Icinga\Backend\Ido\Query
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*/
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public function from($virtual_table, $fields = array())
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{
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$classname = $this->tableToClassName($virtual_table);
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if (! class_exists($classname)) {
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throw new \Exception(sprintf('Asking for invalid virtual table %s', $classname));
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}
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$query = new $classname($this, $fields);
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return $query;
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}
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public function hasView($virtual_table)
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{
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return class_exists($this->tableToClassName($virtual_table));
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}
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protected function tableToClassName($virtual_table)
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{
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if (strpos($virtual_table,"/") !== false) {
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list($module, $classname) = explode("/",$virtual_table,2);
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$class = array_pop(explode("\\",get_class($this)));
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return 'Icinga\\'.ucfirst($module).'\\Backend\\'.$class.'\\'.ucfirst($classname).'Query';
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} else {
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return get_class($this) . '\\' . ucfirst($virtual_table . 'Query');
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}
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}
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public function getName()
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{
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return preg_replace('~^.+\\\(.+?)$~', '$1', get_class($this));
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}
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public function __toString()
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{
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return $this->getName();
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}
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}
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