/**
* 回调函数，用于分析查询中包含的关联表名称
*
* @param string $table_name
*
* @return string
*/
function _parseTableName($table_name)
{
if (strpos($table_name, '.') !== false) {
list($schema, $table_name) = explode('.', $table_name);
} else {
$schema = null;
}
if (is_null($this->_meta) || !isset($this->_meta->associations[$table_name])) {
return $table_name;
}
$assoc = $this->_meta->getAssoc($table_name)->init();
$target_table = $assoc->target_meta->table;
if ($schema && $target_table->schema && $target_table->schema != $schema) {
return "{$schema}.{$table_name}";
}
$assoc_table_name = $assoc->target_meta->table->getFullTableName();
$current_table_name = $this->_getCurrentTableName();
switch ($assoc->type) {
case QDB::HAS_MANY:
case QDB::HAS_ONE:
case QDB::BELONGS_TO:
$key = "{$assoc->type}-{$assoc_table_name}";
if (!isset($this->_joined_tables[$key])) {
$this->joinInner($assoc_table_name, '', "{$assoc_table_name}.{$assoc->target_key} = " . "{$current_table_name}.{$assoc->source_key}");
$this->_joined_tables[$key] = true;
}
break;
case QDB::MANY_TO_MANY:
$mid_table_name = $assoc->mid_table->getFullTableName();
$key = "{$assoc->type}-{$mid_table_name}";
if (!isset($this->_joined_tables[$key])) {
$this->joinInner($mid_table_name, '', "{$mid_table_name}.{$assoc->mid_source_key} = " . "{$current_table_name}.{$assoc->source_key}");
$this->joinInner($assoc_table_name, '', "{$assoc_table_name}.{$assoc->target_key} = " . "{$mid_table_name}.{$assoc->mid_target_key}");
$this->_joined_tables[$key] = true;
}
break;
}
return $assoc_table_name;
}
