public function __construct($object_model, $do, $old_values)
{
$this->object_model = $object_model;
$this->do = $do;
$type = SDO_DAS_Relational_DataObjectHelper::getApplicationType($do);
$old_values_of_any_changed_properties = SDO_DAS_Relational_SettingListHelper::getSettingsAsArray($old_values);
foreach ($this->do as $prop => $value) {
if ($this->object_model->isContainmentReferenceProperty($type, $prop)) {
// We ignore containment references - any changes to them appear elsewhere in the C/S
continue;
}
if (array_key_exists($prop, $old_values_of_any_changed_properties)) {
$this->settings_for_where_clause[$prop] = $old_values_of_any_changed_properties[$prop];
} else {
$this->settings_for_where_clause[$prop] = $value;
}
}
if (count($this->settings_for_where_clause) > 0) {
$this->convertNonContainmentReferencesFromObjectToPK();
$this->stmt = $this->toSQL($this->settings_for_where_clause);
$this->value_list = $this->buildValueList();
}
if (SDO_DAS_Relational::DEBUG_BUILD_PLAN) {
echo "adding update to plan for type {$type}\n";
}
}
public function computeSettingsForSetAndWhereClauses($object_model, $do, $old_values)
{
$old_values_of_any_changed_properties = SDO_DAS_Relational_SettingListHelper::getSettingsAsArray($old_values);
// iterate through data object and examine the primitive properties and non-containment references
// 1a. if there is an old value, and it differs from new value, then save the current value for the SET clause and the old value for the WHERE clause
// 1b. if there is an old value, but happens to be the same as the new value, ignore it - rare case
// 2. if there is no old value it has not changed so save the current value for the WHERE clause
// Properties that have been unset will not be seen when we iterate with foreach but that's OK, because:
// - we assign no meaning to unsetting a primitive or non-containment reference, so ignore it
// - unsetting a containment reference results in a delete appearing elsewhere in the change summary
$type = SDO_DAS_Relational_DataObjectHelper::getApplicationType($do);
foreach ($this->do as $prop => $value) {
if ($this->object_model->isContainmentReferenceProperty($type, $prop)) {
// We ignore containment references - updates to them will appear as creates or deletes elsewhere in the C/S
continue;
}
if (array_key_exists($prop, $old_values_of_any_changed_properties)) {
$old = $old_values_of_any_changed_properties[$prop];
$new = $this->do[$prop];
if ($new === $old) {
// it appeared to change but old === new so use whichever one you like for WHERE clause
$this->settings_for_where_clause[$prop] = $old;
} else {
// this is more likely - it did change
$this->settings_for_set_clause[$prop] = $new;
$this->settings_for_where_clause[$prop] = $old;
}
} else {
$this->settings_for_where_clause[$prop] = $do[$prop];
}
}
}
