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Again, move code for loading libmysql.dll - the right place is now the connection object itself, which loads the library on demand, in SetActive(). This enables the application to start independently of an existent library, raising an error when pressing the connect button. Also, this is a first step towards multi-dbms.

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This commit is contained in:
Ansgar Becker
2011-02-17 00:26:53 +00:00
parent de7ba86e23
commit b50659135c
10 changed files with 479 additions and 799 deletions
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91
source/mysql_structures.pas
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@ -7,10 +7,97 @@ unit mysql_structures;
interface
uses
Classes, Graphics, Windows, SysUtils, mysql_api;
Classes, Graphics, Windows, SysUtils;
{$I const.inc}
const
// General declarations
MYSQL_ERRMSG_SIZE = 512;
SQLSTATE_LENGTH = 5;
SCRAMBLE_LENGTH = 20;
MYSQL_PORT = 3306;
LOCAL_HOST = 'localhost';
NAME_LEN = 64;
PROTOCOL_VERSION = 10;
FRM_VER = 6;
// Field's flags
NOT_NULL_FLAG = 1;
PRI_KEY_FLAG = 2;
UNIQUE_KEY_FLAG = 4;
MULTIPLE_KEY_FLAG = 8;
BLOB_FLAG = 16;
UNSIGNED_FLAG = 32;
ZEROFILL_FLAG = 64;
BINARY_FLAG = 128;
ENUM_FLAG = 256;
AUTO_INCREMENT_FLAG = 512;
TIMESTAMP_FLAG = 1024;
SET_FLAG = 2048;
NUM_FLAG = 32768;
PART_KEY_FLAG = 16384;
GROUP_FLAG = 32768;
UNIQUE_FLAG = 65536;
BINCMP_FLAG = 131072;
// Client connection options
CLIENT_LONG_PASSWORD = 1;
CLIENT_FOUND_ROWS = 2; // Found instead of affected rows
CLIENT_LONG_FLAG = 4;
CLIENT_CONNECT_WITH_DB = 8;
CLIENT_NO_SCHEMA = 16; // Don't allow database.table.column
CLIENT_COMPRESS = 32;
CLIENT_ODBC = 64;
CLIENT_LOCAL_FILES = 128;
CLIENT_IGNORE_SPACE = 256; // Ignore spaces before '('
CLIENT_PROTOCOL_41 = 512;
CLIENT_INTERACTIVE = 1024;
CLIENT_SSL = 2048; // Switch to SSL after handshake
CLIENT_IGNORE_SIGPIPE = 4096;
CLIENT_TRANSACTIONS = 8192;
CLIENT_RESERVED = 16384;
CLIENT_SECURE_CONNECTION = 32768;
CLIENT_MULTI_STATEMENTS = 65536;
CLIENT_MULTI_RESULTS = 131072;
CLIENT_SSL_VERIFY_SERVER_CERT = 67108864;
CLIENT_REMEMBER_OPTIONS = 134217728;
// Enum Field Types
FIELD_TYPE_DECIMAL = 0;
FIELD_TYPE_TINY = 1;
FIELD_TYPE_SHORT = 2;
FIELD_TYPE_LONG = 3;
FIELD_TYPE_FLOAT = 4;
FIELD_TYPE_DOUBLE = 5;
FIELD_TYPE_NULL = 6;
FIELD_TYPE_TIMESTAMP = 7;
FIELD_TYPE_LONGLONG = 8;
FIELD_TYPE_INT24 = 9;
FIELD_TYPE_DATE = 10;
FIELD_TYPE_TIME = 11;
FIELD_TYPE_DATETIME = 12;
FIELD_TYPE_YEAR = 13;
FIELD_TYPE_NEWDATE = 14;
FIELD_TYPE_VARCHAR = 15;
FIELD_TYPE_BIT = 16;
FIELD_TYPE_NEWDECIMAL = 246;
FIELD_TYPE_ENUM = 247;
FIELD_TYPE_SET = 248;
FIELD_TYPE_TINY_BLOB = 249;
FIELD_TYPE_MEDIUM_BLOB = 250;
FIELD_TYPE_LONG_BLOB = 251;
FIELD_TYPE_BLOB = 252;
FIELD_TYPE_VAR_STRING = 253;
FIELD_TYPE_STRING = 254;
FIELD_TYPE_GEOMETRY = 255;
COLLATION_BINARY = 63;
// Equivalent to COLLATION_BINARY, this is what a new driver returns when connected to a pre-4.1 server.
COLLATION_NONE = 0;
type
// MySQL data types
TDatatypeIndex = (dtTinyint, dtSmallint, dtMediumint, dtInt, dtBigint,
@ -28,7 +115,7 @@ type
// MySQL data type structure
TDatatype = record
Index: TDatatypeIndex;
NativeType: Cardinal; // See field types in mysql_api.pas
NativeType: Cardinal; // See field types
Name: String;
Description: String;
HasLength: Boolean; // Can have Length- or Set-attribute?