/**
* Instantiate a single QueryNode object from a query cursor (e.g. a DB ResultSet).
* Cursor is automatically moved to the "next row" of the result set.
* Will return NULL if no cursor or if the cursor has no more rows in the resultset.
* @param QDatabaseResultBase $objDbResult cursor resource
* @return QueryNode next row resulting from the query
*/
public static function InstantiateCursor(QDatabaseResultBase $objDbResult)
{
// If blank resultset, then return empty result
if (!$objDbResult) {
return null;
}
// If empty resultset, then return empty result
$objDbRow = $objDbResult->GetNextRow();
if (!$objDbRow) {
return null;
}
// We need the Column Aliases
$strColumnAliasArray = $objDbResult->QueryBuilder->ColumnAliasArray;
if (!$strColumnAliasArray) {
$strColumnAliasArray = array();
}
// Pull Expansions (if applicable)
$strExpandAsArrayNodes = $objDbResult->QueryBuilder->ExpandAsArrayNodes;
// Load up the return result with a row and return it
return QueryNode::InstantiateDbRow($objDbRow, null, $strExpandAsArrayNodes, null, $strColumnAliasArray);
}
/**
* Instantiate a QueryCondition from a Database Row.
* Takes in an optional strAliasPrefix, used in case another Object::InstantiateDbRow
* is calling this QueryCondition::InstantiateDbRow in order to perform
* early binding on referenced objects.
* @param QDatabaseRowBase $objDbRow
* @param string $strAliasPrefix
* @param string $strExpandAsArrayNodes
* @param QBaseClass $objPreviousItem
* @param string[] $strColumnAliasArray
* @return QueryCondition
*/
public static function InstantiateDbRow($objDbRow, $strAliasPrefix = null, $strExpandAsArrayNodes = null, $objPreviousItem = null, $strColumnAliasArray = array())
{
// If blank row, return null
if (!$objDbRow) {
return null;
}
// Create a new instance of the QueryCondition object
$objToReturn = new QueryCondition();
$objToReturn->__blnRestored = true;
$strAliasName = array_key_exists($strAliasPrefix . 'id', $strColumnAliasArray) ? $strColumnAliasArray[$strAliasPrefix . 'id'] : $strAliasPrefix . 'id';
$objToReturn->intId = $objDbRow->GetColumn($strAliasName, 'Integer');
$strAliasName = array_key_exists($strAliasPrefix . 'search_query_id', $strColumnAliasArray) ? $strColumnAliasArray[$strAliasPrefix . 'search_query_id'] : $strAliasPrefix . 'search_query_id';
$objToReturn->intSearchQueryId = $objDbRow->GetColumn($strAliasName, 'Integer');
$strAliasName = array_key_exists($strAliasPrefix . 'or_query_condition_id', $strColumnAliasArray) ? $strColumnAliasArray[$strAliasPrefix . 'or_query_condition_id'] : $strAliasPrefix . 'or_query_condition_id';
$objToReturn->intOrQueryConditionId = $objDbRow->GetColumn($strAliasName, 'Integer');
$strAliasName = array_key_exists($strAliasPrefix . 'query_operation_id', $strColumnAliasArray) ? $strColumnAliasArray[$strAliasPrefix . 'query_operation_id'] : $strAliasPrefix . 'query_operation_id';
$objToReturn->intQueryOperationId = $objDbRow->GetColumn($strAliasName, 'Integer');
$strAliasName = array_key_exists($strAliasPrefix . 'query_node_id', $strColumnAliasArray) ? $strColumnAliasArray[$strAliasPrefix . 'query_node_id'] : $strAliasPrefix . 'query_node_id';
$objToReturn->intQueryNodeId = $objDbRow->GetColumn($strAliasName, 'Integer');
$strAliasName = array_key_exists($strAliasPrefix . 'value', $strColumnAliasArray) ? $strColumnAliasArray[$strAliasPrefix . 'value'] : $strAliasPrefix . 'value';
$objToReturn->strValue = $objDbRow->GetColumn($strAliasName, 'VarChar');
// Instantiate Virtual Attributes
foreach ($objDbRow->GetColumnNameArray() as $strColumnName => $mixValue) {
$strVirtualPrefix = $strAliasPrefix . '__';
$strVirtualPrefixLength = strlen($strVirtualPrefix);
if (substr($strColumnName, 0, $strVirtualPrefixLength) == $strVirtualPrefix) {
$objToReturn->__strVirtualAttributeArray[substr($strColumnName, $strVirtualPrefixLength)] = $mixValue;
}
}
// Prepare to Check for Early/Virtual Binding
if (!$strAliasPrefix) {
$strAliasPrefix = 'query_condition__';
}
// Check for SearchQuery Early Binding
$strAlias = $strAliasPrefix . 'search_query_id__id';
$strAliasName = array_key_exists($strAlias, $strColumnAliasArray) ? $strColumnAliasArray[$strAlias] : $strAlias;
if (!is_null($objDbRow->GetColumn($strAliasName))) {
$objToReturn->objSearchQuery = SearchQuery::InstantiateDbRow($objDbRow, $strAliasPrefix . 'search_query_id__', $strExpandAsArrayNodes, null, $strColumnAliasArray);
}
// Check for OrQueryCondition Early Binding
$strAlias = $strAliasPrefix . 'or_query_condition_id__id';
$strAliasName = array_key_exists($strAlias, $strColumnAliasArray) ? $strColumnAliasArray[$strAlias] : $strAlias;
if (!is_null($objDbRow->GetColumn($strAliasName))) {
$objToReturn->objOrQueryCondition = QueryCondition::InstantiateDbRow($objDbRow, $strAliasPrefix . 'or_query_condition_id__', $strExpandAsArrayNodes, null, $strColumnAliasArray);
}
// Check for QueryOperation Early Binding
$strAlias = $strAliasPrefix . 'query_operation_id__id';
$strAliasName = array_key_exists($strAlias, $strColumnAliasArray) ? $strColumnAliasArray[$strAlias] : $strAlias;
if (!is_null($objDbRow->GetColumn($strAliasName))) {
$objToReturn->objQueryOperation = QueryOperation::InstantiateDbRow($objDbRow, $strAliasPrefix . 'query_operation_id__', $strExpandAsArrayNodes, null, $strColumnAliasArray);
}
// Check for QueryNode Early Binding
$strAlias = $strAliasPrefix . 'query_node_id__id';
$strAliasName = array_key_exists($strAlias, $strColumnAliasArray) ? $strColumnAliasArray[$strAlias] : $strAlias;
if (!is_null($objDbRow->GetColumn($strAliasName))) {
$objToReturn->objQueryNode = QueryNode::InstantiateDbRow($objDbRow, $strAliasPrefix . 'query_node_id__', $strExpandAsArrayNodes, null, $strColumnAliasArray);
}
// Check for QueryConditionAsOr Unique ReverseReference Binding
$strAlias = $strAliasPrefix . 'queryconditionasor__id';
$strAliasName = array_key_exists($strAlias, $strColumnAliasArray) ? $strColumnAliasArray[$strAlias] : $strAlias;
if ($objDbRow->ColumnExists($strAliasName)) {
if (!is_null($objDbRow->GetColumn($strAliasName))) {
$objToReturn->objQueryConditionAsOr = QueryCondition::InstantiateDbRow($objDbRow, $strAliasPrefix . 'queryconditionasor__', $strExpandAsArrayNodes, null, $strColumnAliasArray);
} else {
// We ATTEMPTED to do an Early Bind but the Object Doesn't Exist
// Let's set to FALSE so that the object knows not to try and re-query again
$objToReturn->objQueryConditionAsOr = false;
}
}
return $objToReturn;
}
