protected function executeDropTable(DropStatement $statement, ExecutionContext $context)
{
foreach ($statement->getSubjects() as $tableNameValue) {
$tableName = $this->valueResolver->resolveValue($tableNameValue, $context);
$this->schemaManager->dropTable($tableName);
}
$databaseSchema = $this->schemaManager->getSchema();
$result = new TemporaryResult();
$result->setIsSuccess(!$databaseSchema->tableExists($tableName));
return $result;
}
public function convertSqlToJob(SQLTokenIterator $tokens)
{
$tokens->seekTokenNum(SqlToken::T_DROP());
if ($tokens->getCurrentTokenNumber() !== SqlToken::T_DROP()) {
throw new ErrorException("Tried to parse sql-drop when token-iterator does not point to T_DROP!");
}
$dropJob = new DropStatement();
if ($tokens->seekTokenNum(SqlToken::T_TEMPORARY())) {
$dropJob->setIsTemporary(true);
}
switch (true) {
case $tokens->seekTokenNum(SqlToken::T_SCHEMA(), TokenIterator::NEXT):
case $tokens->seekTokenNum(SqlToken::T_DATABASE()):
$dropJob->setType(DropStatement::TYPE_DATABASE);
break;
case $tokens->seekTokenNum(SqlToken::T_TABLE()):
$dropJob->setType(DropStatement::TYPE_TABLE);
break;
case $tokens->seekTokenNum(SqlToken::T_VIEW()):
$dropJob->setType(DropStatement::TYPE_VIEW);
break;
}
if ($tokens->seekTokenNum(SqlToken::T_IF())) {
if (!$tokens->seekTokenNum(SqlToken::T_EXISTS())) {
throw new MalformedSqlException("Malformed drop-statement (missing T_EXISTS after T_IF)!");
}
$dropJob->setOnlyIfExist(true);
} else {
$dropJob->setOnlyIfExist(false);
}
do {
if (!$this->valueParser->canParseTokens($tokens)) {
throw new MalformedSqlException("Missing a subject to drop for T_DROP statement!", $tokens);
}
$subject = $this->valueParser->convertSqlToJob($tokens);
$dropJob->addSubject($subject);
} while ($tokens->seekTokenText(','));
if ($tokens->seekTokenNum(SqlToken::T_RESTRICT())) {
$dropJob->setReferenceOption(ReferenceOption::RESTRICT());
if ($tokens->seekTokenNum(SqlToken::T_CASCADE())) {
throw new MalformedSqlException("Conflicting T_RESTRICT with T_CASCADE!", $tokens);
}
}
if ($tokens->seekTokenNum(SqlToken::T_CASCADE())) {
$dropJob->setReferenceOption(ReferenceOption::CASCADE());
if ($tokens->seekTokenNum(SqlToken::T_RESTRICT())) {
throw new MalformedSqlException("Conflicting T_RESTRICT with T_CASCADE!", $tokens);
}
}
return $dropJob;
}
