protected function processReferences(SystemTableMetaModelLoaderCallContext $callcontext, DataSourceMetaData $datasource) {
$foreignKeyConstraintCount = 0;
$constraintsProperties = $this->loadReferenceConstraintsProperties($callcontext, $datasource);
if (isset($constraintsProperties)) {
$constraintsColumnsPropertyFormatter = new QueryKeyResultFormatter(array(self::CN_TABLE_OWNER, self::CN_OBJECT_NAME), FALSE);
$constraintsColumnsProperties = $constraintsColumnsPropertyFormatter->formatRecords(
$this->loadConstraintColumnsProperties(
$callcontext, $datasource,
array(self::CONSTRAINT_TYPE__PRIMARY_KEY, self::CONSTRAINT_TYPE__REFERENCE)));
foreach ($constraintsProperties as $constraintProperties) {
$tableOwner = $this->adjustOwnerName($constraintProperties[self::CN_TABLE_OWNER]);
// ---------- preparing referring constraint properties
$constraintName = $constraintProperties[self::CN_OBJECT_NAME];
$constraintAccessKey = ArrayHelper::prepareCompositeKey(array($tableOwner, $constraintName));
// for some reason we do not have access to column configuration for referring constraint
if (!isset($constraintsColumnsProperties[$constraintAccessKey])) {
continue;
}
$constraintColumnsProperties = $constraintsColumnsProperties[$constraintAccessKey];
// we do not support composite references yet
if (count($constraintColumnsProperties) > 1) {
continue;
}
// ----------- preparing referenced constraint properties
$refConstraintName = $constraintProperties[self::CN_REFERENCED_OBJECT_NAME];
$refConstraintAccessKey = ArrayHelper::prepareCompositeKey(array($tableOwner, $refConstraintName));
// for some reason we do not have access to column configuration for referenced constraint
if (!isset($constraintsColumnsProperties[$refConstraintAccessKey])) {
continue;
}
$constraintColumnProperties = $constraintColumnsProperties[0];
$tableName = $this->adjustTableName($constraintColumnProperties[self::CN_TABLE_NAME]);
$tableAccessKey = ArrayHelper::prepareCompositeKey(array($tableOwner, $tableName));
if (!isset($callcontext->datasets[$tableAccessKey])) {
continue;
}
$refConstraintColumnProperties = $constraintsColumnsProperties[$refConstraintAccessKey][0];
$refTableName = $this->adjustTableName($refConstraintColumnProperties[self::CN_TABLE_NAME]);
$refTableAccessKey = ArrayHelper::prepareCompositeKey(array($tableOwner, $refTableName));
if (!isset($callcontext->datasets[$refTableAccessKey])) {
continue;
}
$columnName = $this->adjustColumnName($constraintColumnProperties[self::CN_COLUMN_NAME]);
$refColumnName = $this->adjustColumnName($refConstraintColumnProperties[self::CN_COLUMN_NAME]);
if ($tableName == $refTableName) {
LogHelper::log_warn(t(
"Self-reference is not supported yet: @tableName(@columnName)",
array('@tableName' => $tableName, '@columnName' => $columnName)));
continue;
}
$dataset = $callcontext->datasets[$tableAccessKey];
$column = $dataset->findColumn($columnName);
if (!isset($column)) {
continue;
}
$refDataset = $callcontext->datasets[$refTableAccessKey];
$refColumn = $refDataset->findColumn($refColumnName);
if (!isset($refColumn)) {
continue;
}
$logicalApplicationType = ReferencePathHelper::assembleReference($refDataset->name, $refColumnName);
if (isset($column->type->logicalApplicationType)) {
LogHelper::log_warn(t(
"Multi-reference is not supported yet for '@columnName' column from '@tableName' table: [@referenceExisting, @referenceNew]",
array(
'@tableName' => $tableName,
'@columnName' => $columnName,
'@referenceExisting' => $column->type->logicalApplicationType,
'@referenceNew' => $logicalApplicationType)));
continue;
}
$column->type->logicalApplicationType = $logicalApplicationType;
$foreignKeyConstraintCount++;
}
}
LogHelper::log_info(t(
'Processed system meta data about @constraintCount foreign key constraint(s)',
array('@constraintCount' => $foreignKeyConstraintCount)));
}
public function insertOrUpdateOrDeleteDatasetRecords(DataControllerCallContext $callcontext, AbstractDatasetManipulationRequest $request) {
$environment_metamodel = data_controller_get_environment_metamodel();
$metamodel = data_controller_get_metamodel();
$datasourceQueryHandler = DataSourceQueryFactory::getInstance()->getHandler($this->getDataSourceType());
$dataset = $metamodel->getDataset($request->datasetName);
$datasource = $environment_metamodel->getDataSource($dataset->datasourceName);
$recordMetaData = isset($request->recordsHolder->recordMetaData) ? $request->recordsHolder->recordMetaData : $dataset;
$isRecordIndexed = $request->recordsHolder instanceof IndexedRecordsHolder;
$keyColumnNames = $recordMetaData->getKeyColumnNames();
$nonkeyColumnNames = $recordMetaData->findNonKeyColumnNames();
// preparing a request to find existing records
$queryRequest = new DatasetQueryRequest($request->datasetName);
// loading only key columns from database
$queryRequest->addColumns($keyColumnNames);
// a request can be more efficient for single column key
if (count($keyColumnNames) == 1) {
list($keyColumnIndex, $keyColumnName) = each($keyColumnNames);
$keyColumnIdentifier = $isRecordIndexed ? $keyColumnIndex : $keyColumnName;
$keyValues = NULL;
foreach ($request->recordsHolder->records as $record) {
ArrayHelper::addUniqueValue($keyValues, $record->getColumnValue($keyColumnIdentifier, TRUE));
}
$queryRequest->addQueryValue(
0,
$keyColumnName, OperatorFactory::getInstance()->initiateHandler(EqualOperatorHandler::OPERATOR__NAME, array($keyValues)));
}
else {
for ($i = 0, $count = count($request->recordsHolder->records); $i < $count; $i++) {
$record = $request->recordsHolder->records[$i];
foreach ($keyColumnNames as $keyColumnIndex => $keyColumnName) {
$keyColumnIdentifier = $isRecordIndexed ? $keyColumnIndex : $keyColumnName;
$keyColumnValue = $record->getColumnValue($keyColumnIdentifier, TRUE);
$queryRequest->addQueryValue(
$i,
$keyColumnName, OperatorFactory::getInstance()->initiateHandler(EqualOperatorHandler::OPERATOR__NAME, $keyColumnValue));
}
}
}
// loading existing records ... if any
$existingRecordFormatter = new QueryKeyResultFormatter($keyColumnNames);
$existingRecords = $existingRecordFormatter->formatRecords($datasourceQueryHandler->queryDataset($callcontext, $queryRequest));
// sorting out records for insert, update and delete operations
$keyedRecords = $insertedRecordKeys = $updatedRecordKeys = $deletedRecordKeys = NULL;
foreach ($request->recordsHolder->records as $record) {
$keyParts = NULL;
foreach ($keyColumnNames as $keyColumnIndex => $keyColumnName) {
$keyColumnIdentifier = $isRecordIndexed ? $keyColumnIndex : $keyColumnName;
$keyParts[] = $record->getColumnValue($keyColumnIdentifier, TRUE);
}
$key = ArrayHelper::prepareCompositeKey($keyParts);
$keyedRecords[$key] = $record;
// checking if the record has to be deleted
$isDeletable = TRUE;
if (isset($nonkeyColumnNames)) {
foreach ($nonkeyColumnNames as $columnIndex => $columnName) {
$columnIdentifier = $isRecordIndexed ? $columnIndex : $columnName;
if ($record->getColumnValue($columnIdentifier) != NULL) {
$isDeletable = FALSE;
break;
}
}
}
else {
// the dataset has NO non-key columns. We should not delete these records
$isDeletable = FALSE;
}
if ($isDeletable) {
unset($insertedRecordKeys[$key]);
unset($updatedRecordKeys[$key]);
// the record physically present in database and needs to be deleted
if (isset($existingRecords[$key])) {
unset($existingRecords[$key]);
$deletedRecordKeys[$key] = TRUE;
}
}
elseif (isset($insertedRecordKeys[$key])) {
// the key has been already used to insert a record within this batch. This record needs to be part of update operation
$updatedRecordKeys[$key] = TRUE;
}
elseif (isset($existingRecords[$key])) {
$updatedRecordKeys[$key] = TRUE;
}
else {
$insertedRecordKeys[$key] = TRUE;
}
}
$sqls = NULL;
// deleting existing records
$deletedRecordCount = 0;
if (isset($deletedRecordKeys)) {
$deleteRecordHolder = $this->prepareRecordHolder($request, $keyedRecords, $deletedRecordKeys);
// preparing request
$deleteRequest = new DatasetDeleteRequest($request->datasetName, $deleteRecordHolder);
// preparing statements to delete records from the database
ArrayHelper::appendValue($sqls, $this->prepareDeleteDatasetRecordStatements($callcontext, $deleteRequest));
$deletedRecordCount = count($deleteRecordHolder->records);
}
// inserting new records
$insertedRecordCount = 0;
if (isset($insertedRecordKeys)) {
$insertRecordHolder = $this->prepareRecordHolder($request, $keyedRecords, $insertedRecordKeys);
// preparing request
$insertRequest = new DatasetInsertRequest($request->datasetName, $insertRecordHolder);
// preparing statements to insert records into the database
ArrayHelper::appendValue($sqls, $this->prepareInsertDatasetRecordStatements($callcontext, $insertRequest));
$insertedRecordCount = count($insertRecordHolder->records);
}
// updating existing records
$updatedRecordCount = 0;
if (isset($updatedRecordKeys)) {
$updateRecordHolder = $this->prepareRecordHolder($request, $keyedRecords, $updatedRecordKeys);
// preparing request
$updateRequest = new DatasetUpdateRequest($request->datasetName, $updateRecordHolder);
// preparing statements to update records in the database
ArrayHelper::appendValue($sqls, $this->prepareUpdateDatasetRecordStatements($callcontext, $updateRequest));
$updatedRecordCount = count($updateRecordHolder->records);
}
$affectedRecordCount = isset($sqls) ? $this->executeManipulationStatementBatch($datasource, $sqls) : 0;
if (($insertedRecordCount + $updatedRecordCount + $deletedRecordCount) < $affectedRecordCount) {
throw new IllegalStateException(t('Number of affected records is greater than expected number of inserted, updated and deleted records'));
}
return array($insertedRecordCount, $updatedRecordCount, $deletedRecordCount);
}
