/**
* Look for table definition modifications and apply to real table
*
* @param $tableName
* @param $definition
*
* @throws Exception
*/
public function morphTable($tableName, $definition)
{
if (isset(self::$_databaseConfig->dbname)) {
$defaultSchema = self::$_databaseConfig->dbname;
} else {
$defaultSchema = null;
}
$tableExists = self::$_connection->tableExists($tableName, $defaultSchema);
if (isset($definition['columns'])) {
if (count($definition['columns']) == 0) {
throw new Exception('Table must have at least one column');
}
$fields = array();
foreach ($definition['columns'] as $tableColumn) {
if (!is_object($tableColumn)) {
throw new Exception('Table must have at least one column');
}
$fields[$tableColumn->getName()] = $tableColumn;
}
if ($tableExists == true) {
$localFields = array();
$description = self::$_connection->describeColumns($tableName, $defaultSchema);
foreach ($description as $field) {
$localFields[$field->getName()] = $field;
}
foreach ($fields as $fieldName => $tableColumn) {
if (!isset($localFields[$fieldName])) {
self::$_connection->addColumn($tableName, $tableColumn->getSchemaName(), $tableColumn);
} else {
$changed = false;
if ($localFields[$fieldName]->getType() != $tableColumn->getType()) {
$changed = true;
}
if ($localFields[$fieldName]->getSize() != $tableColumn->getSize()) {
$changed = true;
}
if ($tableColumn->isNotNull() != $localFields[$fieldName]->isNotNull()) {
$changed = true;
}
if ($changed == true) {
self::$_connection->modifyColumn($tableName, $tableColumn->getSchemaName(), $tableColumn);
}
}
}
foreach ($localFields as $fieldName => $localField) {
if (!isset($fields[$fieldName])) {
self::$_connection->dropColumn($tableName, null, $fieldName);
}
}
} else {
self::$_connection->createTable($tableName, $defaultSchema, $definition);
if (method_exists($this, 'afterCreateTable')) {
$this->afterCreateTable();
}
}
}
if (isset($definition['references'])) {
if ($tableExists == true) {
$references = array();
foreach ($definition['references'] as $tableReference) {
$references[$tableReference->getName()] = $tableReference;
}
$localReferences = array();
$activeReferences = self::$_connection->describeReferences($tableName, $defaultSchema);
foreach ($activeReferences as $activeReference) {
$localReferences[$activeReference->getName()] = array('referencedTable' => $activeReference->getReferencedTable(), 'columns' => $activeReference->getColumns(), 'referencedColumns' => $activeReference->getReferencedColumns());
}
foreach ($definition['references'] as $tableReference) {
if (!isset($localReferences[$tableReference->getName()])) {
self::$_connection->addForeignKey($tableName, $tableReference->getSchemaName(), $tableReference);
} else {
$changed = false;
if ($tableReference->getReferencedTable() != $localReferences[$tableReference->getName()]['referencedTable']) {
$changed = true;
}
if ($changed == false) {
if (count($tableReference->getColumns()) != count($localReferences[$tableReference->getName()]['columns'])) {
$changed = true;
}
}
if ($changed == false) {
if (count($tableReference->getReferencedColumns()) != count($localReferences[$tableReference->getName()]['referencedColumns'])) {
$changed = true;
}
}
if ($changed == false) {
foreach ($tableReference->getColumns() as $columnName) {
if (!in_array($columnName, $localReferences[$tableReference->getName()]['columns'])) {
$changed = true;
break;
}
}
}
if ($changed == false) {
foreach ($tableReference->getReferencedColumns() as $columnName) {
if (!in_array($columnName, $localReferences[$tableReference->getName()]['referencedColumns'])) {
$changed = true;
break;
}
}
}
if ($changed == true) {
self::$_connection->dropForeignKey($tableName, $tableReference->getSchemaName(), $tableReference->getName());
self::$_connection->addForeignKey($tableName, $tableReference->getSchemaName(), $tableReference);
}
}
}
foreach ($localReferences as $referenceName => $reference) {
if (!isset($references[$referenceName])) {
self::$_connection->dropForeignKey($tableName, null, $referenceName);
}
}
}
}
if (isset($definition['indexes'])) {
if ($tableExists == true) {
$indexes = array();
foreach ($definition['indexes'] as $tableIndex) {
$indexes[$tableIndex->getName()] = $tableIndex;
}
$localIndexes = array();
$actualIndexes = self::$_connection->describeIndexes($tableName, $defaultSchema);
foreach ($actualIndexes as $actualIndex) {
$localIndexes[$actualIndex->getName()] = $actualIndex->getColumns();
}
foreach ($definition['indexes'] as $tableIndex) {
if (!isset($localIndexes[$tableIndex->getName()])) {
if ($tableIndex->getName() == 'PRIMARY') {
self::$_connection->addPrimaryKey($tableName, $tableColumn->getSchemaName(), $tableIndex);
} else {
self::$_connection->addIndex($tableName, $tableColumn->getSchemaName(), $tableIndex);
}
} else {
$changed = false;
if (count($tableIndex->getColumns()) != count($localIndexes[$tableIndex->getName()])) {
$changed = true;
} else {
foreach ($tableIndex->getColumns() as $columnName) {
if (!in_array($columnName, $localIndexes[$tableIndex->getName()])) {
$changed = true;
break;
}
}
}
if ($changed == true) {
if ($tableIndex->getName() == 'PRIMARY') {
self::$_connection->dropPrimaryKey($tableName, $tableColumn->getSchemaName());
self::$_connection->addPrimaryKey($tableName, $tableColumn->getSchemaName(), $tableIndex);
} else {
self::$_connection->dropIndex($tableName, $tableColumn->getSchemaName(), $tableIndex->getName());
self::$_connection->addIndex($tableName, $tableColumn->getSchemaName(), $tableIndex);
}
}
}
}
foreach ($localIndexes as $indexName => $indexColumns) {
if (!isset($indexes[$indexName])) {
self::$_connection->dropIndex($tableName, null, $indexName);
}
}
}
}
}
