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5e4adcfea2
The service overview required a few fixes for issues that occured because the StatusDat Query class now inherits from Data/AbstractQuery. refs #4178
74 lines
2.9 KiB
PHP
74 lines
2.9 KiB
PHP
<?php
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// {{{ICINGA_LICENSE_HEADER}}}
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/**
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* This file is part of Icinga 2 Web.
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*
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* Icinga 2 Web - Head for multiple monitoring backends.
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* Copyright (C) 2013 Icinga Development Team
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* @copyright 2013 Icinga Development Team <info@icinga.org>
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* @license http://www.gnu.org/licenses/gpl-2.0.txt GPL, version 2
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* @author Icinga Development Team <info@icinga.org>
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*/
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// {{{ICINGA_LICENSE_HEADER}}}
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namespace Icinga\Protocol\Statusdat\View;
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/**
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* Interface for statusdat classes that provide a specific view on the dataset
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*
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* Views define special get and exists operations for fields that are not directly available
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* in a resultset, but exist under another name or can be accessed by loading an additional object
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* during runtime.
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*
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* @see Icinga\Backend\DataView\ObjectRemappingView For an implementation of mapping field names
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* to storage specific names, e.g. service_state being status.current_state in status.dat views.
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*
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* @see Icinga\Backend\MonitoringObjectList For the typical usage of this class. It is not wrapped
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* around the monitoring object, so we don't use __get() or __set() and always have to give the
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* item we'd like to access.
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*/
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interface AccessorStrategy
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{
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/**
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* Returns a field for the item, or throws an Exception if the field doesn't exist
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*
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* @param $item The item to access
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* @param $field The field of the item that should be accessed
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* @return string The content of the field
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*
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* @throws \InvalidArgumentException when the field does not exist
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*/
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public function get(&$item, $field);
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/**
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* Returns the name that the field has in the specific backend. Might not be available for every field/view
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* @param $field The field name that should be translated
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* @return string The real name of this field
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*/
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public function getNormalizedFieldName($field);
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/**
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* Returns true if the field exists on the specific item, otherwise false
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*
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* @param $item The item to access
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* @param $field The field to check on the $item
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* @return bool True when the field exists, otherwise false
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*/
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public function exists(&$item, $field);
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}
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