New features and fixes

[codercms]

Changes:

• Fixed "prepare" method that always returns true (even when an error has occurred)
• Added "resultStatus" property so you can figure out how to interpret the result
• Added "resultDiag" property that can be very useful for error message building and for errors troubleshooting.
• Added "fieldCount" method that returns number of columns in the result set

Testing error in prepare query

$connection = new \Swoole\Coroutine\PostgreSQL();
$connection->connect("host=127.0.0.1 port=5432 user=postgres dbname=test");

$result = $connection->prepare('123', 'SELECT FROM rere');
var_dump($result, $connection);

$result = $connection->prepare('123', 'SELECT 1');
var_dump($result, $connection);

Output is (click me):

bool(false)
object(Swoole\Coroutine\PostgreSQL)#5 (4) {
  ["error"]=>
  string(86) "ERROR:  relation "rere" does not exist
LINE 1: SELECT FROM rere
                    ^
"
  ["errCode"]=>
  int(0)
  ["resultStatus"]=>
  int(7)
  ["resultDiag"]=>
  array(17) {
    ["severity"]=>
    string(5) "ERROR"
    ["sqlstate"]=>
    string(5) "42P01"
    ["message_primary"]=>
    string(30) "relation "rere" does not exist"
    ["message_detail"]=>
    NULL
    ["message_hint"]=>
    NULL
    ["statement_position"]=>
    string(2) "13"
    ["internal_position"]=>
    NULL
    ["internal_query"]=>
    NULL
    ["content"]=>
    NULL
    ["schema_name"]=>
    NULL
    ["table_name"]=>
    NULL
    ["column_name"]=>
    NULL
    ["datatype_name"]=>
    NULL
    ["constraint_name"]=>
    NULL
    ["source_file"]=>
    string(16) "parse_relation.c"
    ["source_line"]=>
    string(4) "1191"
    ["source_function"]=>
    string(15) "parserOpenTable"
  }
}
bool(true)
object(Swoole\Coroutine\PostgreSQL)#5 (4) {
  ["error"]=>
  NULL
  ["errCode"]=>
  int(0)
  ["resultStatus"]=>
  int(1)
  ["resultDiag"]=>
  NULL
}

Testing error in query

$result = $connection->query('SELECT * FROM test WHERE undefined_colmun = 1');
var_dump($result, $connection);
$result = $connection->query('SELECT * FROM test LIMIT 1');
var_dump($result, $connection);

Output is (click me):

bool(false)
object(Swoole\Coroutine\PostgreSQL)#5 (4) {
  ["error"]=>
  string(138) "ERROR:  column "undefined_colmun" does not exist
LINE 1: SELECT * FROM test WHERE undefined_colmun = 1
                                 ^
"
  ["errCode"]=>
  int(0)
  ["resultStatus"]=>
  int(7)
  ["resultDiag"]=>
  array(17) {
    ["severity"]=>
    string(5) "ERROR"
    ["sqlstate"]=>
    string(5) "42703"
    ["message_primary"]=>
    string(40) "column "undefined_colmun" does not exist"
    ["message_detail"]=>
    NULL
    ["message_hint"]=>
    NULL
    ["statement_position"]=>
    string(2) "26"
    ["internal_position"]=>
    NULL
    ["internal_query"]=>
    NULL
    ["content"]=>
    NULL
    ["schema_name"]=>
    NULL
    ["table_name"]=>
    NULL
    ["column_name"]=>
    NULL
    ["datatype_name"]=>
    NULL
    ["constraint_name"]=>
    NULL
    ["source_file"]=>
    string(16) "parse_relation.c"
    ["source_line"]=>
    string(4) "3349"
    ["source_function"]=>
    string(18) "errorMissingColumn"
  }
}
resource(17) of type (pgsql result)
object(Swoole\Coroutine\PostgreSQL)#5 (4) {
  ["error"]=>
  NULL
  ["errCode"]=>
  int(0)
  ["resultStatus"]=>
  int(2)
  ["resultDiag"]=>
  NULL
}

Testing constraint violation

$connection->query("CREATE TABLE test (domain VARCHAR(63), tld VARCHAR(63), PRIMARY KEY (domain, tld))");

$result = $connection->query("INSERT INTO test (domain, tld)VALUES('google', 'com')");
var_dump($result, $connection);
$result = $connection->query("INSERT INTO test (domain, tld)VALUES('google', 'com')");
var_dump($result, $connection);

Output is (click me):

resource(17) of type (pgsql result)
object(Swoole\Coroutine\PostgreSQL)#5 (4) {
  ["error"]=>
  NULL
  ["errCode"]=>
  int(0)
  ["resultStatus"]=>
  int(1)
  ["resultDiag"]=>
  NULL
}
bool(false)
object(Swoole\Coroutine\PostgreSQL)#5 (4) {
  ["error"]=>
  string(124) "ERROR:  duplicate key value violates unique constraint "test_pkey"
DETAIL:  Key (domain, tld)=(google, com) already exists.
"
  ["errCode"]=>
  int(0)
  ["resultStatus"]=>
  int(7)
  ["resultDiag"]=>
  array(17) {
    ["severity"]=>
    string(5) "ERROR"
    ["sqlstate"]=>
    string(5) "23505"
    ["message_primary"]=>
    string(58) "duplicate key value violates unique constraint "test_pkey""
    ["message_detail"]=>
    string(47) "Key (domain, tld)=(google, com) already exists."
    ["message_hint"]=>
    NULL
    ["statement_position"]=>
    NULL
    ["internal_position"]=>
    NULL
    ["internal_query"]=>
    NULL
    ["content"]=>
    NULL
    ["schema_name"]=>
    string(6) "public"
    ["table_name"]=>
    string(4) "test"
    ["column_name"]=>
    NULL
    ["datatype_name"]=>
    NULL
    ["constraint_name"]=>
    string(9) "test_pkey"
    ["source_file"]=>
    string(11) "nbtinsert.c"
    ["source_line"]=>
    string(3) "563"
    ["source_function"]=>
    string(16) "_bt_check_unique"
  }
}

[codercms]

Actually all tests performed on the feature/new-features branch (which is based on latest stable 08c47e4 commit and with this fix applied #36), because for this moment it's impossible to build this extension from the master branch due to breaking changes (Swoole 4.5.4 which is not released yet)