501 lines
15 KiB
C
501 lines
15 KiB
C
#include "scheme48.h"
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#include <stdio.h>
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/* ODBC header files */
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#include <sql.h>
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#include <sqlext.h>
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#include <sqltypes.h>
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/* darwin 6.1 sql header files do not define SQLLEN */
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#ifndef SQLLEN
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#define SQLLEN SQLINTEGER
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#endif
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#define ERROR_MSG_BUFFER_LEN 255
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#define ODBC_MAX_STR_LEN 255
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#define ODBC_MAX_DRIVER_NAME_LEN ODBC_MAX_STR_LEN
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#define ODBC_GET_INFO_MAX_LEN ODBC_MAX_STR_LEN
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#define ODBC_GET_CONNECT_ATTR_MAX_LEN ODBC_MAX_STR_LEN
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#define ODBC_GET_STMT_ATTR_MAX_LEN ODBC_MAX_STR_LEN
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#define ODBC_GET_DATA_MAX_STR_LEN ODBC_MAX_STR_LEN
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#define ODBC_DESCRIBE_COL_MAX_STR_LEN ODBC_MAX_STR_LEN
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#define ODBC_MAX_CURSOR_NAME_STR_LEN ODBC_MAX_STR_LEN
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#define ODBC_MAX_NATIVE_SQL_STR_LEN ODBC_MAX_STR_LEN
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#define ODBC_MAX_GET_DESC_FIELD_STR_LEN ODBC_MAX_STR_LEN
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#define ODBC_RETVAL_BUFFER_INITIAL_SIZE 3
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#define ODBC_DEBUG_MSGS 1
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#define ODBC_RAISE_EXCEPTION(MSG) s48_raise_string_os_error(MSG)
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#ifdef ODBC_DEBUG_MSGS
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#define ODBC_DEBUG_DIAGREC(ht, h) odbc_debug_msgs(ht, h);
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#else
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#define ODBC_DEBUG_DIAGREC(ht, h) ;
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#endif
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#ifdef ODBC_DEBUG_MSGS
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#define ODBC_DEBUG_PRINTF_1(str) printf(str);
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#define ODBC_DEBUG_PRINTF_2(str, arg) printf(str, arg);
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#define ODBC_DEBUG_PRINTF_3(str, arg1, arg2) printf(str, arg1, arg2);
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#define ODBC_DEBUG_PRINTF_4(str, arg1, arg2, arg3) printf(str, arg1, arg2, arg3);
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#define ODBC_DEBUG_PRINTF_5(str, arg1, arg2, arg3, arg4) printf(str, arg1, arg2, arg3, arg4);
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#else
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#define ODBC_DEBUG_PRINTF_1(str) ;
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#define ODBC_DEBUG_PRINTF_2(str, arg) ;
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#define ODBC_DEBUG_PRINTF_3(str, arg1, arg2) ;
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#define ODBC_DEBUG_PRINTF_4(str, arg1, arg2, arg3) ;
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#define ODBC_DEBUG_PRINTF_5(str, arg1, arg2, arg3, arg4) ;
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#endif
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/* offsets for scheme records */
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/* some useful macros */
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#define ODBC_SUCCESS(retval) ((retval == SQL_SUCCESS) || (retval == SQL_SUCCESS_WITH_INFO))
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/* corresponds to sql-date */
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static s48_value sql_date_record_type = S48_FALSE;
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#define SR_SQL_DATE_YEAR 0
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#define SR_SQL_DATE_MONTH 1
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#define SR_SQL_DATE_DAY 2
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/* corresponds to sql-time */
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static s48_value sql_time_record_type = S48_FALSE;
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#define SR_SQL_TIME_HOUR 0
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#define SR_SQL_TIME_MINUTE 1
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#define SR_SQL_TIME_SECOND 2
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/* corresponds to sql-timestamp */
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static s48_value sql_timestamp_record_type = S48_FALSE;
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#define SR_SQL_TIMESTAMP_YEAR 0
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#define SR_SQL_TIMESTAMP_MONTH 1
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#define SR_SQL_TIMESTAMP_DAY 2
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#define SR_SQL_TIMESTAMP_HOUR 3
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#define SR_SQL_TIMESTAMP_MINUTE 4
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#define SR_SQL_TIMESTAMP_SECOND 5
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#define SR_SQL_TIMESTAMP_FRACTION 6
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/* corresponds to sql-numeric */
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#define SR_SQL_NUMERIC_PRECISION 0
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#define SR_SQL_NUMERIC_SCALE 1
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#define SR_SQL_NUMERIC_SIGN 2
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#define SR_SQL_NUMERIC_VALUE 3
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/* corresponds to odbc-column */
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static s48_value odbc_column_record_type = S48_FALSE;
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#define SR_ODBC_COLUMN_NAME 0
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#define SR_ODBC_COLUMN_TYPE 1
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#define SR_ODBC_COLUMN_SIZE 2
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#define SR_ODBC_COLUMN_DIGITS 3
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#define SR_ODBC_COLUMN_NULLABLE 4
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/* corresponds to odbc-diag */
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static s48_value odbc_diag_record_type = S48_FALSE;
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#define SR_ODBC_DIAG_SQL_STATE 0
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#define SR_ODBC_DIAG_NATIVE_ERROR 1
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#define SR_ODBC_DIAG_MESSAGE 2
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/* corresponds to odbc-parameter */
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static s48_value odbc_parameter_record_type = S48_FALSE;
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#define SR_ODBC_PARAMETER_TYPE 0
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#define SR_ODBC_PARAMETER_SIZE 1
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#define SR_ODBC_PARAMETER_DIGITS 2
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#define SR_ODBC_PARAMETER_NULLABLE 3
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/* stuff needed for SQLBindCol() */
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/* correspons to bindcol-buffer */
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static s48_value bindcol_buffer_record_type = S48_FALSE;
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#define SR_BINDCOL_BUFFER_POINTER 0
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#define SR_BINDCOL_BUFFER_LENGTH 1
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#define SR_BINDCOL_BUFFER_TARGET_TYPE 2
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static s48_value signal_unbound_column = S48_FALSE;
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static s48_value signal_buffer_exceeded = S48_FALSE;
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typedef struct bindcol_col_rec *ColumnRecPtr;
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typedef struct bindcol_col_rec {
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SQLUSMALLINT col_no;
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void *col_buffer;
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SQLSMALLINT target_type;
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SQLLEN buffer_len;
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SQLLEN buffer_needed;
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ColumnRecPtr next;
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} ColumnRec;
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typedef struct bindcol_stmt_rec *StmtRecPtr;
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typedef struct bindcol_stmt_rec {
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SQLHSTMT stmt_handle;
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ColumnRecPtr col_recs;
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StmtRecPtr next;
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} StmtRec;
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/* global variables */
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StmtRecPtr global_bindcol_list = NULL;
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/* helper functions needed for SQLBindCol() */
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ColumnRecPtr bindcol_lookup_binding(SQLHSTMT stmt_handle, SQLUSMALLINT column_no);
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s48_value bindcol_lookup_binding_scheme(s48_value stmt_handle, s48_value column_no);
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void bindcol_bind_column(SQLHSTMT stmt_handle, SQLUSMALLINT column_no, ColumnRecPtr new_col);
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void bindcol_unbind_colum(SQLHSTMT stmt_handle, SQLUSMALLINT column_no);
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s48_value bindcol_finalize_bindcols(s48_value stmt_handle);
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s48_value odbc_sql_bindcol(s48_value stmt_handle, s48_value column_no,
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s48_value target_type, s48_value buffer_len);
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/*
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*
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* PART 1
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*
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* Connecting to a data source
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*
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*/
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/* Call SQLAllocHandle and get an environment handle. After that
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* call odbc_set_environment to set the ODBC version */
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s48_value odbc_alloc_environment_handle();
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/* given a valid environment handle (type SQLHENV) this function
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* sets the environment attributes. This needs to be done before
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* allocating a connection handle */
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void odbc_sql_set_env_attr(SQLHENV env_handle);
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/* Given a valid environment handle get a connection handle */
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s48_value odbc_alloc_connection_handle(s48_value env_handle);
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/* Given a valid connection handle get a statement handle */
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s48_value odbc_alloc_statement_handle(s48_value stmt_handle);
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/* for ODBC 1.0 compatibility */
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s48_value odbc_sql_alloc_env();
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s48_value odbc_sql_alloc_connect(s48_value env_handle);
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s48_value odbc_sql_alloc_stmt(s48_value conn_handle);
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/* Connect to a server */
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s48_value odbc_sql_connect(s48_value connection_handle,
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s48_value ds_name,
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s48_value user_name,
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s48_value authentication);
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s48_value odbc_sql_browse_connect(s48_value conn_handle, s48_value conn_string);
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/*
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*
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* PART 2
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*
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* Obtaining information about a driver and data source
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*
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*/
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/* Returns a list of available data sources. */
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s48_value odbc_sql_data_sources(s48_value env_handle);
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/* Returns the list of installed drivers and their attributes. */
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s48_value odbc_sql_drivers(s48_value env_handle);
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/* Returns information about a specific driver and data source.
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* (use if the information is an integer) */
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s48_value odbc_sql_get_info_int(s48_value conn_handle, s48_value info_key);
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/* Returns information about a specific driver and data source.
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* (use if the information is a string) */
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s48_value odbc_sql_get_info_string(s48_value conn_handle, s48_value info_key);
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/* Returns supported driver functions. */
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s48_value odbc_sql_get_func_exists(s48_value conn_handle, s48_value fun_id);
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/* Returns information about supported data types. */
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s48_value odbc_sql_get_type_info(s48_value stmt_handle, s48_value data_type);
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/*
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*
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* PART 3
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*
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* Setting and retrieving driver attributes
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*
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*/
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s48_value odbc_sql_set_connect_attr_int(s48_value conn_handle,
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s48_value attribute,
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s48_value value);
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s48_value odbc_sql_set_connect_attr_string(s48_value conn_handle,
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s48_value attribute,
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s48_value value);
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s48_value odbc_sql_get_connect_attr_string(s48_value conn_handle,
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s48_value attribute);
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s48_value odbc_sql_get_connect_attr_int(s48_value conn_handle,
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s48_value attribute);
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s48_value odbc_sql_set_env_attr_int(s48_value env_handle,
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s48_value attribute,
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s48_value value);
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s48_value odbc_sql_get_env_attr_int(s48_value env_handle,
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s48_value attribute,
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s48_value value);
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s48_value odbc_sql_set_stmt_attr_int(s48_value stmt_handle,
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s48_value attribute,
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s48_value value);
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s48_value odbc_sql_set_stmt_attr_string(s48_value stmt_handle,
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s48_value attribute,
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s48_value value);
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s48_value odbc_sql_get_stmt_attr_int(s48_value stmt_handle,
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s48_value attribute);
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s48_value odbc_sql_get_stmt_attr_string(s48_value stmt_handle,
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s48_value attribute);
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/*
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*
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* part 4
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*
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* Setting and retrieving descriptor fields
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*
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*/
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/* Returns the value of a single descriptor field (for integers) */
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s48_value odbc_sql_get_desc_field_int(s48_value desc_handle, s48_value rec_number,
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s48_value field_id);
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/* Returns the value of a single descriptor field (for strings/binary data) */
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s48_value odbc_sql_get_desc_field_string(s48_value desc_handle, s48_value rec_number,
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s48_value field_id);
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/*
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*
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* PART 5
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*
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* Preparing SQL requests
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*
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*/
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/* Prepare a SQL statement for execution */
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s48_value odbc_sql_prepare(s48_value stmt_handle, s48_value stmt_txt);
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s48_value odbc_sql_bind_parameter_exec_out(s48_value stmt_handle,
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s48_value param_vals);
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s48_value odbc_sql_get_cursor_name(s48_value stmt_handle);
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void odbc_sql_set_cursor_name(s48_value stmt_handle, s48_value cursorname);
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/*
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*
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* PART 6
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*
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* Submitting requests
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*
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*/
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s48_value odbc_sql_execute(s48_value stmt_handle);
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s48_value odbc_sql_execute_direct(s48_value stmt_handle, s48_value stmt);
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/* Returns the text of an SQL statement as translated by the driver. */
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s48_value odbc_sql_native_sql(s48_value conn_handle, s48_value stmt_txt);
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/* Returns the description for a specific parameter in a statement */
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s48_value odbc_sql_describe_param(s48_value stmt_handle, s48_value parameter_no);
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/* Returns the number of parameters in a statement */
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s48_value odbc_sql_num_params(s48_value stmt_handle);
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/*
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*
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* PART 7
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*
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* Retrieving results and information about results
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*
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*/
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s48_value odbc_sql_row_count(s48_value stmt_handle);
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s48_value odbc_sql_get_data(s48_value stmt_handle, s48_value column_number,
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s48_value target_type, s48_value buffer_size);
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/* Positions a cursor within a fetched block of data and allows an application
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to refresh data in the rowset or to update or delete data in the result
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set */
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s48_value odbc_sql_set_pos(s48_value stmt_handle, s48_value row_number,
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s48_value operation, s48_value lock_type);
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/* Performs bulk insertions and bulk bookmark operations, including
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update, delete, and fetch by bookmark. */
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s48_value odbc_sql_bulk_operations(s48_value stmt_handle, s48_value operation);
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/* Determines whether there are more result sets available and, if so,
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initializes processing for the next result set */
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s48_value odbc_sql_more_results(s48_value stmt_handle);
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s48_value odbc_sql_fetch(s48_value stmt_handle);
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s48_value odbc_sql_num_result_cols(s48_value stmt_handle);
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s48_value odbc_sql_describe_col(s48_value stmt_handle, s48_value column_number);
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/* Describes attributes of a column in the result set */
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s48_value odbc_sql_col_attribute(s48_value stmt_handle, s48_value column_number,
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s48_value field_id);
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/*
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*
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* PART 8
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*
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* Obtaining information about the data source's
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* system tables (catalog functions)
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*
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*/
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/* Returns a list of columns and associated privileges for one or more tables */
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s48_value odbc_sql_column_privileges(s48_value stmt_handle, s48_value catalog_name,
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s48_value schema_name, s48_value table_name,
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s48_value column_name);
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/* Returns the list of column names in a specified table */
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s48_value odbc_sql_columns(s48_value stmt_handle, s48_value catalog_name,
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s48_value schema_name, s48_value table_name,
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s48_value column_name);
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/* Returns a list of columns names that make up foreign keys,
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if the exist for a specified table */
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s48_value odbc_sql_foreign_keys(s48_value stmt_handle, s48_value pk_catalog_name,
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s48_value pk_schema_name, s48_value pk_table_name,
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s48_value fk_catalog_name, s48_value fk_schema_name,
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s48_value fk_table_name);
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/* Returns the list of column names that make up the primary key for a table */
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s48_value odbc_sql_primary_keys(s48_value stmt_handle, s48_value catalog_name,
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s48_value schema_name, s48_value table_name);
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/* Returns the list of input and output parameters, as well as the columns
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that make up the result set for the specified procedures */
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s48_value odbc_sql_procedure_columns(s48_value stmt_handle, s48_value catalog_name,
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s48_value schema_name, s48_value proc_name,
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s48_value column_name);
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/* Returns the list of procedure names stored in a specific data source. */
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s48_value odbc_sql_procedures(s48_value stmt_handle, s48_value catalog_name,
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s48_value schema_name, s48_value proc_name);
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/* Returns information about the optimal set of columns that uniquely identifies
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a row in a specified table, or the columns that are automatically updated
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when any value in the row is updated by a transaction */
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s48_value odbc_sql_special_columns(s48_value stmt_handle, s48_value identifier_type,
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s48_value catalog_name, s48_value schema_name,
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s48_value table_name, s48_value scope,
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s48_value nullable);
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/* Returns statistics about a single table and the list of indexes associated
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with the table */
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s48_value odbc_sql_statistics(s48_value stmt_handle, s48_value catalog_name,
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s48_value schema_name, s48_value table_name,
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s48_value unique, s48_value reserved);
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/* Returns a list of tables and the privileges associated with each table */
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s48_value odbc_sql_table_privileges(s48_value stmt_handle, s48_value catalog_name,
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s48_value schema_name, s48_value table_name);
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/* Returns the list of table names stored in a specific data source */
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s48_value odbc_sql_tables(s48_value stmt_handle, s48_value catalog_name,
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s48_value schema_name, s48_value table_name,
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s48_value table_type);
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/*
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*
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* PART 9
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*
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* Terminating a statement
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*
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*/
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/* Ends statement processing, discards pending resilt, and,
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* optionally, frees all resources associated with the
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* statement handle */
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s48_value odbc_sql_free_statement(s48_value stmt_handle, s48_value option);
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/* Closes a cursor that has been opened on a statement handle */
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s48_value odbc_sql_close_cursor(s48_value stmt_handle);
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/* Cancels an SQL statement */
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s48_value odbc_sql_cancel(s48_value stmt_handle);
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/* Commits or rolls back a transaction */
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s48_value odbc_sql_endtran(s48_value handle_type, s48_value handle,
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s48_value completion_type);
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/*
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*
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* PART 10
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*
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* Terminating a connection
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*
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*/
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/* Closes the connection */
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s48_value odbc_sql_disconnect(s48_value conn_handle);
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/* Free a handle */
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s48_value odbc_sql_free_handle(s48_value handle_type, s48_value handle);
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/*
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*
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* PART 11
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*
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* misc. functions
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*
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*/
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s48_value odbc_sql_get_diag_recs(s48_value handle_type, s48_value handle);
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#ifdef ODBC_DEBUG_MSGS
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/* print detailed debug information */
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void odbc_debug_msgs(SQLSMALLINT handle_type, SQLHANDLE handle);
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#endif
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/* convert Scheme sql-date record to SQL_DATE_STRUCT */
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void sql_date_record_to_struct(s48_value sql_date, SQL_DATE_STRUCT *ds);
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/* convert SQL_DATE_STRUCT to Scheme sql-date record */
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s48_value struct_to_sql_date_record(SQL_DATE_STRUCT *ds);
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/* convert Scheme sql-time record to SQL_TIME_STRUCT */
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void sql_time_record_to_struct(s48_value sql_time, SQL_TIME_STRUCT *ts);
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/* convert SQL_TIME_STRUCT to Scheme sql-time record */
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s48_value struct_to_sql_time_record(SQL_TIME_STRUCT *ts);
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/* convert SQL_TIME_STRUCT to Scheme sql-time record */
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s48_value struct_to_sql_time_record(SQL_TIME_STRUCT *ts);
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/* convert Scheme sql-timestamp record to SQL_TIMESTAMP_STRUCT */
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void sql_timestamp_record_to_struct(s48_value sql_timestamp,
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SQL_TIMESTAMP_STRUCT *ts);
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void odbc_sql_alloc(void **buffer, size_t buffer_len, size_t type_len);
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size_t sizeof_sql_c_type_identifier(SQLSMALLINT ctypeid);
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s48_value buffer_to_s48_value(void *buffer, SQLSMALLINT ctypeid);
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void s48_init_odbc(void);
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