function __construct(GROUPRequest &$props, READER &$reader = NULL, $flags = 0)
{
global $DEFAULT_MISSING_VALUE;
parent::__construct($props);
$opts = $this->req->GetOptions();
$this->md5_postfix = $opts->Get('use_md5_postfix');
if ($reader) {
$this->reader =& $reader;
} else {
if ($this->req->srv['disconnected']) {
if ($flags & CACHE::CREATE_UPDATER) {
throw new ADEIException(translate("It is not possible to create CACHE updater on disconnected data source"));
}
$this->reader = NULL;
} else {
if ($this->cache_reader) {
$this->reader = NULL;
} else {
try {
$this->reader = $props->CreateReader(REQUEST::READER_FORBID_CACHEREADER);
} catch (ADEIException $ae) {
if ($flags & CACHE::CREATE_UPDATER) {
throw $ae;
}
if ($opts->Get('overcome_reader_faults')) {
$this->reader = NULL;
$reader_exception = $ae;
} else {
throw $ae;
}
}
}
}
if (!$this->reader) {
try {
$this->reader = $props->CreateCacheReader($this);
} catch (ADEIException $ae) {
if ($reader_exception) {
$reader_exception->MergeRecoveryException($ae);
throw $reader_exception;
}
throw $ae;
}
}
}
if ($this->reader) {
if (!$this->reader->srvid || !$this->reader->dbname) {
throw new ADEIException(translate("Invalid READER is supplied to the caching engine"));
}
$grinfo = $props->GetGroupInfo();
$this->group = $this->reader->CreateGroup($grinfo);
$this->default_db_server = $this->reader->srvid;
$this->default_db_name = $this->reader->dbname;
$this->default_db_group = $this->group->gid;
$this->SetDefaultPostfix();
/*
We don't expect any changes here at the moment
$opts = $this->req->GetCustomOptions($this->default_db_server, $this->default_db_name, $this->default_db_group);
*/
$mres = $opts->Get("min_resolution");
if ($mres && is_array($mres)) {
$mres = $mres[$this->group->gid];
}
$cache_config = $opts->Get('cache_config');
$this->resolution = new RESOLUTION($mres, $cache_config);
} else {
$this->group = false;
$this->resolution = false;
}
$this->use_subseconds = !$opts->Get('ignore_subseconds');
$this->omit_raw_cache = $opts->Get('omit_raw_cache');
if ($this->omit_raw_cache) {
throw new ADEIException(translate("Option 'omit_raw_cache' is not supported yet"));
$this->fill_raw_first = false;
} else {
$this->fill_raw_first = $opts->Get('fill_raw_first');
}
$this->optimize_empty_cache = $opts->Get('optimize_empty_cache');
$this->cache_reader = $opts->Get('use_cache_reader');
$this->ignore_invalid_data = $opts->Get('ignore_invalid_data');
$this->items = 0;
if ($flags & CACHE::CREATE_UPDATER) {
if ($opts->Get("disable_caching")) {
throw new ADEIException(translate("Caching is disabled"), ADEIException::DISABLED);
}
$this->current_raw_end = false;
$this->current_cache_end = false;
$this->current_cache_resolution = false;
if ($this->md5_postfix) {
$this->MD5Check();
}
if ($this->fill_raw_first) {
$this->all_mask = false;
}
$this->trace_timings = $opts->Get("trace_timings");
$this->data_filter = $this->reader->CreateDataFilter($this->group);
}
}
