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<?php
/* Icinga Web 2 | (c) 2013 Icinga Development Team | GPLv2+ */
namespace Icinga\Module\Monitoring\Backend\Ido\Query;
use Icinga\Data\Filter\FilterExpression;
use Zend_Db_Expr;
use Zend_Db_Select;
use Icinga\Data\Filter\Filter;
/**
* Query for host and service comment history records
*/
class CommenthistoryQuery extends IdoQuery
{
/**
* {@inheritdoc}
*/
protected $columnMap = array(
'commenthistory' => array(
'id' => 'ch.id',
'object_type' => 'ch.object_type'
),
'history' => array(
'type' => 'ch.type',
'timestamp' => 'ch.timestamp',
'object_id' => 'ch.object_id',
'state' => 'ch.state',
'output' => 'ch.output'
),
'hosts' => array(
'host_display_name' => 'ch.host_display_name',
'host_name' => 'ch.host_name'
),
'services' => array(
'service_description' => 'ch.service_description',
'service_display_name' => 'ch.service_display_name',
'service_host_name' => 'ch.service_host_name'
)
);
/**
* The union
*
* @var Zend_Db_Select
*/
protected $commentHistoryQuery;
/**
* Subqueries used for the comment history query
*
* @var IdoQuery[]
*/
protected $subQueries = array();
/**
* Whether to additionally select all history columns
*
* @var bool
*/
protected $fetchHistoryColumns = false;
/**
* {@inheritdoc}
*/
public function allowsCustomVars()
{
foreach ($this->subQueries as $query) {
if (! $query->allowsCustomVars()) {
return false;
}
}
return true;
}
/**
* {@inheritdoc}
*/
protected function joinBaseTables()
{
$this->commentHistoryQuery = $this->db->select();
$this->select->from(
array('ch' => $this->commentHistoryQuery),
array()
);
$this->joinedVirtualTables['commenthistory'] = true;
}
/**
* Join history related columns and tables
*/
protected function joinHistory()
{
// TODO: Ensure that one is selecting the history columns first...
$this->fetchHistoryColumns = true;
$this->requireVirtualTable('hosts');
$this->requireVirtualTable('services');
}
/**
* Join hosts
*/
protected function joinHosts()
{
$columns = array_keys(
$this->columnMap['commenthistory'] + $this->columnMap['hosts']
);
foreach ($this->columnMap['services'] as $column => $_) {
$columns[$column] = new Zend_Db_Expr('NULL');
}
if ($this->fetchHistoryColumns) {
$columns = array_merge($columns, array_keys($this->columnMap['history']));
}
$hosts = $this->createSubQuery('Hostcommenthistory', $columns);
$this->subQueries[] = $hosts;
$this->commentHistoryQuery->union(array($hosts), Zend_Db_Select::SQL_UNION_ALL);
}
/**
* Join services
*/
protected function joinServices()
{
$columns = array_keys(
$this->columnMap['commenthistory'] + $this->columnMap['hosts'] + $this->columnMap['services']
);
if ($this->fetchHistoryColumns) {
$columns = array_merge($columns, array_keys($this->columnMap['history']));
}
$services = $this->createSubQuery('Servicecommenthistory', $columns);
$this->subQueries[] = $services;
$this->commentHistoryQuery->union(array($services), Zend_Db_Select::SQL_UNION_ALL);
}
/**
* {@inheritdoc}
*/
public function order($columnOrAlias, $dir = null)
{
foreach ($this->subQueries as $sub) {
$sub->requireColumn($columnOrAlias);
}
return parent::order($columnOrAlias, $dir);
}
/**
* {@inheritdoc}
*/
public function where($condition, $value = null)
{
$this->requireColumn($condition);
foreach ($this->subQueries as $sub) {
$sub->where($condition, $value);
}
return $this;
}
/**
* {@inheritdoc}
*/
public function addFilter(Filter $filter)
{
foreach ($this->subQueries as $sub) {
$sub->applyFilter(clone $filter);
}
return $this;
}
public function whereEx(FilterExpression $ex)
{
$this->requireColumn($ex->getColumn());
foreach ($this->subQueries as $sub) {
$sub->whereEx($ex);
}
return $this;
}
}
|
