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562 lines
19 KiB
ObjectPascal
562 lines
19 KiB
ObjectPascal
unit dbstructures.postgresql;
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interface
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uses
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dbstructures;
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type
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// PostgreSQL structures
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TPQConnectStatus = (CONNECTION_OK, CONNECTION_BAD, CONNECTION_STARTED, CONNECTION_MADE, CONNECTION_AWAITING_RESPONSE, CONNECTION_AUTH_OK, CONNECTION_SETENV, CONNECTION_SSL_STARTUP, CONNECTION_NEEDED);
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PPGconn = Pointer;
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PPGresult = Pointer;
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POid = Cardinal;
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TPostgreSQLLib = class(TDbLib)
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PQconnectdb: function(const ConnInfo: PAnsiChar): PPGconn cdecl;
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PQerrorMessage: function(const Handle: PPGconn): PAnsiChar cdecl;
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PQresultErrorMessage: function(const Result: PPGresult): PAnsiChar cdecl;
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PQresultErrorField: function(const Result: PPGresult; fieldcode: Integer): PAnsiChar;
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PQfinish: procedure(const Handle: PPGconn);
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PQstatus: function(const Handle: PPGconn): TPQConnectStatus cdecl;
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PQsendQuery: function(const Handle: PPGconn; command: PAnsiChar): Integer cdecl;
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PQgetResult: function(const Handle: PPGconn): PPGresult cdecl;
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PQbackendPID: function(const Handle: PPGconn): Integer cdecl;
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PQcmdTuples: function(Result: PPGresult): PAnsiChar; cdecl;
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PQntuples: function(Result: PPGresult): Integer; cdecl;
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PQclear: procedure(Result: PPGresult); cdecl;
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PQnfields: function(Result: PPGresult): Integer; cdecl;
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PQfname: function(const Result: PPGresult; column_number: Integer): PAnsiChar; cdecl;
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PQftype: function(const Result: PPGresult; column_number: Integer): POid; cdecl;
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PQftable: function(const Result: PPGresult; column_number: Integer): POid; cdecl;
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PQgetvalue: function(const Result: PPGresult; row_number: Integer; column_number: Integer): PAnsiChar; cdecl;
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PQgetlength: function(const Result: PPGresult; row_number: Integer; column_number: Integer): Integer; cdecl;
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PQgetisnull: function(const Result: PPGresult; row_number: Integer; column_number: Integer): Integer; cdecl;
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PQlibVersion: function(): Integer; cdecl;
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protected
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procedure AssignProcedures; override;
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end;
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var
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PostgreSQLDatatypes: Array[0..37] of TDBDatatype =
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(
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(
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Index: dbdtUnknown;
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NativeTypes: '99999';
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Name: 'UNKNOWN';
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Description: 'Unknown data type';
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HasLength: False;
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RequiresLength: False;
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HasBinary: False;
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HasDefault: False;
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LoadPart: False;
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Category: dtcOther;
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),
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(
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Index: dbdtSmallint;
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NativeTypes: '21';
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Name: 'SMALLINT';
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Names: 'smallint|int2';
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Description: 'Small-range integer. Range: -32768 to +32767. Storage Size: 2 Bytes.';
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HasLength: False;
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RequiresLength: False;
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HasBinary: False;
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HasDefault: False;
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LoadPart: False;
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ValueMustMatch: '^\d{1,5}$';
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Category: dtcInteger;
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),
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(
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Index: dbdtInt;
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// 26 = oid, 28 = xid
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NativeTypes: '23|26|28';
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Name: 'INTEGER';
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Names: 'integer|int4|int|oid|xid';
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Description: 'Typical choice for integer. Range: -2147483648 to +2147483647. Storage Size: 4 Bytes.';
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HasLength: False;
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RequiresLength: False;
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HasBinary: False;
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HasDefault: False;
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LoadPart: False;
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ValueMustMatch: '^\d{1,10}$';
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Category: dtcInteger;
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),
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(
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Index: dbdtBigint;
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NativeTypes: '20';
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Name: 'BIGINT';
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Names: 'bigint|int8';
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Description: 'Large-range integer. Range: -9223372036854775808 to 9223372036854775807. Storage Size: 8 Bytes.';
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HasLength: False;
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RequiresLength: False;
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HasBinary: False;
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HasDefault: False;
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LoadPart: False;
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ValueMustMatch: '^\d{1,19}$';
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Category: dtcInteger;
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),
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(
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Index: dbdtSerial;
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Name: 'SERIAL';
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Names: 'serial|serial4';
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Description: 'Autoincrementing integer. Range: 1 to 2147483647. Storage Size: 4 Bytes.';
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HasLength: False;
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RequiresLength: False;
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HasBinary: False;
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HasDefault: False;
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LoadPart: False;
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Category: dtcInteger;
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),
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(
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Index: dbdtBigSerial;
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Name: 'BIGSERIAL';
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Names: 'bigserial|serial8';
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Description: 'Large autoincrementing integer. Range: 1 to 9223372036854775807. Storage Size: 8 Bytes.';
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HasLength: False;
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RequiresLength: False;
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HasBinary: False;
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HasDefault: False;
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LoadPart: False;
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Category: dtcInteger;
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),
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(
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Index: dbdtVarBit;
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NativeTypes: '1562';
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Name: 'BIT VARYING';
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Names: 'bit varying|varbit';
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Description: 'Variable-length bit string.';
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HasLength: True;
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RequiresLength: False;
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HasBinary: False;
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HasDefault: True;
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LoadPart: False;
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Category: dtcInteger;
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),
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(
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Index: dbdtBit;
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NativeTypes: '1560';
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Name: 'BIT';
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Names: 'bit';
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Description: 'Fixed-length bit string.';
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HasLength: True;
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RequiresLength: False;
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HasBinary: False;
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HasDefault: True;
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LoadPart: False;
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Category: dtcInteger;
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),
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(
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Index: dbdtNumeric;
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NativeTypes: '1700';
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Name: 'NUMERIC';
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Names: 'numeric|float8|decimal';
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Description: 'User-specified precision, exact. Range: no limit. Storage Size: variable.';
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HasLength: True;
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RequiresLength: False;
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HasBinary: False;
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HasDefault: False;
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LoadPart: False;
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Category: dtcReal;
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),
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(
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Index: dbdtReal;
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NativeTypes: '700';
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Name: 'REAL';
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Names: 'real|float4';
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Description: 'Variable-precision, inexact. Range: 6 decimal digits precision. Storage Size: 4 Bytes.';
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HasLength: True;
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RequiresLength: False;
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HasBinary: False;
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HasDefault: False;
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LoadPart: False;
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Category: dtcReal;
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),
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(
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Index: dbdtDoublePrecision;
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NativeTypes: '701|1700';
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Name: 'DOUBLE PRECISION';
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Names: 'double precision|float8';
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Description: 'Variable-precision, inexact. Range: 15 decimal digits precision. Storage Size: 8 Bytes.';
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HasLength: True;
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RequiresLength: False;
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HasBinary: False;
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HasDefault: False;
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LoadPart: False;
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Category: dtcReal;
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),
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(
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Index: dbdtMoney;
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NativeTypes: '790';
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Name: 'MONEY';
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Description: 'Currency amount. Range: -92233720368547758.08 to +92233720368547758.07. Storage Size: 8 Bytes.';
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HasLength: True;
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RequiresLength: False;
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HasBinary: False;
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HasDefault: False;
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LoadPart: False;
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Category: dtcReal;
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),
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(
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Index: dbdtChar;
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NativeTypes: '18|1042';
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Name: 'CHAR';
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Names: 'CHARACTER';
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Description: 'Fixed-length, blank padded.';
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HasLength: True;
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RequiresLength: False;
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HasBinary: False;
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HasDefault: False;
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LoadPart: True;
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Category: dtcText;
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),
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(
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Index: dbdtVarchar;
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NativeTypes: '18|19|24|1043|1043';
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Name: 'VARCHAR';
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Names: 'char|bpchar|varchar|name|enum|character varying';
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Description: 'Variable-length with limit.';
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HasLength: True;
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RequiresLength: False;
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HasBinary: False;
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HasDefault: False;
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LoadPart: True;
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Category: dtcText;
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),
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(
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Index: dbdtText;
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NativeTypes: '25|22|30|143|629|651|719|791|1000|1028|1040|1041|1115|1182|1183|1185|1187|1231|1263|1270|1561|1563|2201|2207|2211|2949|2951|3643|3644|3645|3735|3770';
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Name: 'TEXT';
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Names: 'text|int2vector|oidvector|bool';
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Description: 'Variable unlimited length.';
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HasLength: False;
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RequiresLength: False;
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HasBinary: False;
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HasDefault: False;
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LoadPart: True;
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Category: dtcText;
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),
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(
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Index: dbdtCidr;
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NativeTypes: '650';
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Name: 'CIDR';
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Names: 'cidr';
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Description: 'IPv4 and IPv6 networks. Storage size: 7 or 19 bytes';
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HasLength: False;
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RequiresLength: False;
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HasBinary: False;
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HasDefault: False;
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LoadPart: False;
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Category: dtcText;
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),
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(
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Index: dbdtInet;
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NativeTypes: '869';
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Name: 'INET';
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Names: 'inet';
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Description: 'IPv4 and IPv6 hosts and networks. Storage size: 7 or 19 bytes';
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HasLength: False;
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RequiresLength: False;
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HasBinary: False;
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HasDefault: False;
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LoadPart: False;
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Category: dtcText;
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),
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(
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Index: dbdtMacaddr;
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NativeTypes: '829';
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Name: 'MACADDR';
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Names: 'macaddr';
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Description: 'MAC addresses. Storage size: 6 bytes';
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HasLength: False;
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RequiresLength: False;
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HasBinary: False;
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HasDefault: False;
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LoadPart: False;
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Category: dtcText;
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),
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(
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Index: dbdtDate;
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NativeTypes: '1082';
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Name: 'DATE';
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Description: 'Calendar date (year, month, day).';
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HasLength: False;
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RequiresLength: False;
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HasBinary: False;
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HasDefault: False;
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LoadPart: False;
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Format: 'yyyy-mm-dd';
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Category: dtcTemporal;
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),
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(
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Index: dbdtTime;
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NativeTypes: '1083';
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Name: 'TIME';
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Description: 'Time of day.';
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HasLength: False;
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RequiresLength: False;
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HasBinary: False;
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HasDefault: False;
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LoadPart: False;
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Format: 'hh:nn:ss';
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Category: dtcTemporal;
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),
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(
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Index: dbdtDatetime;
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NativeTypes: '1082|1114|702';
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Name: 'TIMESTAMP';
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Names: 'timestamp|datetime|abstime|timestamp without time zone';
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Description: 'Date and time without timezone, e.g. "2020-06-27 16:24:41".';
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HasLength: False;
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RequiresLength: False;
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HasBinary: False;
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HasDefault: False;
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LoadPart: False;
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Format: 'yyyy-mm-dd hh:nn:ss';
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Category: dtcTemporal;
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),
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(
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Index: dbdtDatetime2;
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NativeTypes: '1184';
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Name: 'TIMESTAMPTZ';
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Names: 'timestamptz|timestamp with time zone';
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Description: 'Date and time with time zone, e.g. "2020-06-27 16:24:41+02".';
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HasLength: False;
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RequiresLength: False;
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HasBinary: False;
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HasDefault: False;
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LoadPart: False;
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Format: 'yyyy-mm-dd hh:nn:ss';
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Category: dtcTemporal;
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),
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(
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Index: dbdtDate;
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NativeTypes: '1082';
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Name: 'DATE';
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Description: 'Calendar date (year, month, day).';
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HasLength: False;
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RequiresLength: False;
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HasBinary: False;
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HasDefault: False;
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LoadPart: False;
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Format: 'yyyy-mm-dd';
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Category: dtcTemporal;
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),
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(
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Index: dbdtInterval;
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NativeTypes: '1186';
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Name: 'INTERVAL';
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Description: 'time interval from -178000000 years to 178000000 years';
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HasLength: False;
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RequiresLength: False;
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HasBinary: False;
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HasDefault: False;
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LoadPart: False;
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Format: 'yyyy-mm-dd hh:nn:ss';
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Category: dtcTemporal;
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),
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(
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Index: dbdtBlob;
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NativeTypes: '17';
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Name: 'BYTEA';
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Description: 'Binary data ("byte array").';
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HasLength: False;
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RequiresLength: False;
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HasBinary: False;
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HasDefault: False;
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LoadPart: True;
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Category: dtcBinary;
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),
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(
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Index: dbdtPoint;
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NativeTypes: '600';
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Name: 'POINT';
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Description: 'Point on a plane (x,y). Storage size: 16 bytes.';
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HasLength: True;
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RequiresLength: False;
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HasBinary: False;
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HasDefault: False;
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LoadPart: False;
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Category: dtcSpatial;
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),
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(
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Index: dbdtLinestring;
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NativeTypes: '628';
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Name: 'LINE';
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Description: 'Infinite line ((x1,y1),(x2,y2)). Storage size: 32 bytes.';
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HasLength: True;
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RequiresLength: False;
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HasBinary: False;
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HasDefault: False;
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LoadPart: False;
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Category: dtcSpatial;
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),
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(
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Index: dbdtLineSegment;
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NativeTypes: '601';
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Name: 'LSEG';
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Description: 'Finite line segment ((x1,y1),(x2,y2)). Storage size: 32 bytes.';
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HasLength: True;
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RequiresLength: False;
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HasBinary: False;
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HasDefault: False;
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LoadPart: False;
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Category: dtcSpatial;
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),
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(
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Index: dbdtBox;
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NativeTypes: '603';
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Name: 'BOX';
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Description: 'Rectangular box ((x1,y1),(x2,y2)). Storage size: 32 bytes.';
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HasLength: True;
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RequiresLength: False;
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HasBinary: False;
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HasDefault: False;
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LoadPart: False;
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Category: dtcSpatial;
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),
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(
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Index: dbdtPath;
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NativeTypes: '602';
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Name: 'PATH';
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Description: 'Closed path (similar to polygon) ((x1,y1),...). Storage size: 16+16n bytes.';
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HasLength: True;
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RequiresLength: False;
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HasBinary: False;
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HasDefault: False;
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LoadPart: False;
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Category: dtcSpatial;
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),
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(
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Index: dbdtPolygon;
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NativeTypes: '604';
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Name: 'POLYGON';
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Description: 'Closed path (similar to polygon) ((x1,y1),...). Storage size: 40+16n bytes.';
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HasLength: True;
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RequiresLength: False;
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HasBinary: False;
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HasDefault: False;
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LoadPart: False;
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Category: dtcSpatial;
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),
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(
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Index: dbdtCircle;
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NativeTypes: '718';
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Name: 'CIRCLE';
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Description: 'Circle <(x,y),r> (center point and radius). Storage size: 24 bytes.';
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HasLength: True;
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RequiresLength: False;
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HasBinary: False;
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HasDefault: False;
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LoadPart: False;
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Category: dtcSpatial;
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),
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(
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Index: dbdtBool;
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NativeTypes: '16';
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Name: 'BOOLEAN';
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Names: 'boolean|bool';
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Description: 'State of true or false. Storage size: 1 byte.';
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HasLength: False;
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RequiresLength: False;
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HasBinary: False;
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HasDefault: False;
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LoadPart: False;
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ValueMustMatch: '^(true|false)$';
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Category: dtcOther;
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),
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(
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Index: dbdtRegClass;
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NativeTypes: '2205';
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Name: 'REGCLASS';
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Names: 'regclass';
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Description: 'Relation name';
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HasLength: False;
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RequiresLength: False;
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HasBinary: False;
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HasDefault: False;
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LoadPart: False;
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Category: dtcOther;
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),
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(
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Index: dbdtRegProc;
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NativeTypes: '24';
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Name: 'REGPROC';
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Names: 'regproc|regprocedure';
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Description: 'Function name';
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HasLength: False;
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RequiresLength: False;
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HasBinary: False;
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HasDefault: False;
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LoadPart: False;
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Category: dtcOther;
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),
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(
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Index: dbdtJson;
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NativeTypes: '114';
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Name: 'JSON';
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Names: 'json';
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Description: 'JavaScript Object Notation data';
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HasLength: False;
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RequiresLength: False;
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HasBinary: False;
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HasDefault: False;
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LoadPart: False;
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Category: dtcText;
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),
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(
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Index: dbdtJsonB;
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NativeTypes: '3802';
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Name: 'JSONB';
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Names: 'jsonb';
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Description: 'JavaScript Object Notation data in a binary form';
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HasLength: False;
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RequiresLength: False;
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HasBinary: False;
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HasDefault: False;
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LoadPart: False;
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Category: dtcText;
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),
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(
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Index: dbdtUniqueidentifier;
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NativeTypes: '2950';
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Name: 'UUID';
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Names: 'uuid';
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Description: 'The data type uuid stores Universally Unique Identifiers (UUID) as defined by RFC 4122, ISO/IEC 9834-8:2005, and related standards.';
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HasLength: False;
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RequiresLength: False;
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HasBinary: False;
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HasDefault: False;
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LoadPart: False;
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ValueMustMatch: '^\{?[a-f0-9]{8}-?[a-f0-9]{4}-?[a-f0-9]{4}-?[a-f0-9]{4}-?[a-f0-9]{12}\}?$';
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Category: dtcText;
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)
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);
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implementation
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procedure TPostgreSQLLib.AssignProcedures;
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begin
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AssignProc(@PQconnectdb, 'PQconnectdb');
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AssignProc(@PQerrorMessage, 'PQerrorMessage');
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AssignProc(@PQresultErrorMessage, 'PQresultErrorMessage');
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AssignProc(@PQresultErrorField, 'PQresultErrorField');
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AssignProc(@PQfinish, 'PQfinish');
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AssignProc(@PQstatus, 'PQstatus');
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AssignProc(@PQsendQuery, 'PQsendQuery');
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AssignProc(@PQgetResult, 'PQgetResult');
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AssignProc(@PQbackendPID, 'PQbackendPID');
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AssignProc(@PQcmdTuples, 'PQcmdTuples');
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AssignProc(@PQntuples, 'PQntuples');
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AssignProc(@PQclear, 'PQclear');
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AssignProc(@PQnfields, 'PQnfields');
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AssignProc(@PQfname, 'PQfname');
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AssignProc(@PQftype, 'PQftype');
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AssignProc(@PQftable, 'PQftable');
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AssignProc(@PQgetvalue, 'PQgetvalue');
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AssignProc(@PQgetlength, 'PQgetlength');
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AssignProc(@PQgetisnull, 'PQgetisnull');
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AssignProc(@PQlibVersion, 'PQlibVersion');
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end;
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end.
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