mirror of
https://github.com/FirebirdSQL/firebird.git
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133 lines
4.1 KiB
C++
133 lines
4.1 KiB
C++
//____________________________________________________________
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//
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// PROGRAM: JRD Access Method
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// MODULE: jrdmet.cpp
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// DESCRIPTION: Non-database meta data for internal JRD stuff
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//
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// The contents of this file are subject to the Interbase Public
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// License Version 1.0 (the "License"); you may not use this file
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// except in compliance with the License. You may obtain a copy
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// of the License at http://www.Inprise.com/IPL.html
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//
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// Software distributed under the License is distributed on an
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// "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express
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// or implied. See the License for the specific language governing
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// rights and limitations under the License.
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//
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// The Original Code was created by Inprise Corporation
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// and its predecessors. Portions created by Inprise Corporation are
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// Copyright (C) Inprise Corporation.
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//
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// All Rights Reserved.
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// Contributor(s): ______________________________________.
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// TMN (Mike Nordell) 11.APR.2001 - Reduce compiler warnings
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// There however is still a bunch of constness errors in this file
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//
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//
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//
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#include "firebird.h"
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#include "../jrd/ibase.h"
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#include "../jrd/common.h"
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#include "../jrd/constants.h"
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#include "../jrd/ods.h"
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#include "../gpre/gpre.h"
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#define GPRE
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#include "../jrd/ini.h"
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#undef GPRE
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#include "../gpre/hsh_proto.h"
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#include "../gpre/jrdme_proto.h"
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#include "../gpre/msc_proto.h"
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//____________________________________________________________
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//
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// Initialize in memory meta data.
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//
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void JRDMET_init( DBB db)
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{
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const int* relfld = relfields;
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while (relfld[RFLD_R_NAME]) {
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gpre_rel* relation = (gpre_rel*) MSC_alloc(REL_LEN);
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relation->rel_database = db;
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relation->rel_next = db->dbb_relations;
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relation->rel_id = relfld[RFLD_R_ID];
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db->dbb_relations = relation;
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gpre_sym* symbol = (gpre_sym*) MSC_alloc(SYM_LEN);
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relation->rel_symbol = symbol;
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symbol->sym_type = SYM_relation;
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symbol->sym_object = (gpre_ctx*) relation;
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symbol->sym_string = names[relfld[RFLD_R_NAME]];
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HSH_insert(symbol);
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const int* fld = relfld + RFLD_RPT;
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for (int n = 0; fld[RFLD_F_NAME]; ++n, fld += RFLD_F_LENGTH)
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{
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const gfld* gfield = (fld[RFLD_F_UPD_MINOR]) ?
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&gfields[fld[RFLD_F_UPD_ID]] :
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&gfields[fld[RFLD_F_ID]];
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gpre_fld* field = (gpre_fld*) MSC_alloc(FLD_LEN);
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relation->rel_fields = field;
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field->fld_relation = relation;
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field->fld_next = relation->rel_fields;
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field->fld_id = n;
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field->fld_length = gfield->gfld_length;
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field->fld_dtype = gfield->gfld_dtype;
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field->fld_sub_type = gfield->gfld_sub_type;
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if (field->fld_dtype == dtype_varying ||
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field->fld_dtype == dtype_text)
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{
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field->fld_dtype = dtype_cstring;
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field->fld_flags |= FLD_text;
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++field->fld_length;
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if (gfield->gfld_sub_type == dsc_text_type_metadata) {
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field->fld_flags |= FLD_charset;
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field->fld_charset_id = CS_METADATA;
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field->fld_collate_id = COLLATE_NONE;
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field->fld_ttype = ttype_metadata;
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}
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else {
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field->fld_flags |= FLD_charset;
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field->fld_charset_id = CS_NONE;
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field->fld_collate_id = COLLATE_NONE;
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field->fld_ttype = ttype_none;
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}
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}
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else if (field->fld_dtype == dtype_blob) {
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field->fld_dtype = dtype_blob;
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field->fld_flags |= FLD_blob;
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if (gfield->gfld_sub_type == isc_blob_text)
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field->fld_charset_id = CS_METADATA;
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}
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field->fld_symbol = symbol = (gpre_sym*) MSC_alloc(SYM_LEN);
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symbol->sym_type = SYM_field;
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symbol->sym_object = (gpre_ctx*) field;
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symbol->sym_string = names[fld[RFLD_F_NAME]];
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HSH_insert(symbol);
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field->fld_global = symbol = (gpre_sym*) MSC_alloc(SYM_LEN);
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symbol->sym_type = SYM_field;
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symbol->sym_object = (gpre_ctx*) field;
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symbol->sym_string = names[gfield->gfld_name];
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}
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relfld = fld + 1;
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}
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for (const rtyp* rtype = types; rtype->rtyp_name; rtype++) {
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field_type* type = (field_type*) MSC_alloc(TYP_LEN);
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gpre_sym* symbol = (gpre_sym*) MSC_alloc(SYM_LEN);
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type->typ_symbol = symbol;
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type->typ_value = rtype->rtyp_value;
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symbol->sym_type = SYM_type;
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symbol->sym_object = (gpre_ctx*) type;
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symbol->sym_string = rtype->rtyp_name;
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HSH_insert(symbol);
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}
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}
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