1 /***************************************************************************
2 * Copyright (C) 2007 by www.databasecache.com *
3 * Contact: praba_tuty@databasecache.com *
5 * This program is free software; you can redistribute it and/or modify *
6 * it under the terms of the GNU General Public License as published by *
7 * the Free Software Foundation; either version 2 of the License, or *
8 * (at your option) any later version. *
10 * This program is distributed in the hope that it will be useful, *
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
13 * GNU General Public License for more details. *
15 ***************************************************************************/
17 #ifndef CATALOGTABLE_H
18 #define CATALOGTABLE_H
27 extern char ChunkName
[MAX_CHUNKS
][CHUNK_NAME_LEN
];
51 // chunk id 0 ->userChunkTable
53 // chunk id 10->DATABASE
57 // chunk id 14->ACCESS
59 // chunk id 16->INDEXFIELD
62 LockTableHashBucketId
= 1,
75 IndexFieldTableId
= 16,
76 ForeignKeyTableId
= 17,
77 ForeignKeyFieldTableId
= 18
84 char tblName_
[IDENTIFIER_LENGTH
];
86 size_t length_
; //length of the tuple
93 class CatalogTableTABLE
95 Database
*systemDatabase_
;
97 CatalogTableTABLE(Database
*db
) { systemDatabase_
= db
; }
99 //Last argument is OUT parameter which will contain the
100 //pointer to the inserted tuple
101 DbRetVal
insert(const char *name
, int id
, size_t size
,
102 int numFlds
, void* chunk
, void *&tptr
);
104 //Second argument is OUT parameter which will contain the
105 //chunk pointer of this table
106 //Third argument is OUT parameter which will contain the
107 //pointer to the removed tuple
108 DbRetVal
remove(const char *name
, void *&chunk
, void *&tptr
);
110 DbRetVal
getChunkAndTblPtr(const char *name
, void *&chunk
, void *&tptr
);
111 DbRetVal
setChunkPtr(const char *name
, void *firstPage
, void *curPage
);
119 char fldName_
[IDENTIFIER_LENGTH
];
120 int tblID_
; //table id where this field resides
121 void* tblPtr_
; //pointer to tuple in catalog table TABLE
123 size_t length_
; //length of the field
124 size_t offset_
; //offset (in bytes) into tuple
125 //currently default value is supported for string and binary
126 //less than length 32 bytes
127 char defaultValueBuf_
[DEFAULT_VALUE_BUF_LENGTH
];
128 long long autoVal_
;//[DEFAULT_VALUE_BUF_LENGTH];
135 bool isAutoIncrement_
;
138 class CatalogTableFIELD
140 Database
*systemDatabase_
;
142 CatalogTableFIELD(Database
*db
) { systemDatabase_
= db
; }
144 //returns -1 on error
145 DbRetVal
insert(FieldIterator
&iter
, int tblID
, void *tblPtr
);
147 DbRetVal
remove(void *tblPtr
);
149 //II argument is OUT parameter
150 //field list is populated from the catalog table for
151 // the table pointed by tblPtr
152 void *getFieldInfo( void* tblPtr
, FieldList
&list
);
155 //returns the pointer to fields for the corresponding name
156 //in field name list as an array
157 DbRetVal
getFieldPtrs(FieldNameList
&fldList
,void *tptr
, char **&array
);
163 char userName_
[IDENTIFIER_LENGTH
];
164 char password_
[IDENTIFIER_LENGTH
];
167 class CatalogTableUSER
169 Database
*systemDatabase_
;
171 CatalogTableUSER(Database
*db
) { systemDatabase_
= db
; }
173 //returns -1 on error
174 DbRetVal
insert(const char *name
, const char *pass
);
175 DbRetVal
authenticate(const char *name
, const char *pass
,
176 bool &isAuthenticated
, bool &isDba
);
177 DbRetVal
remove(const char *name
);
178 DbRetVal
changePass(const char *name
, const char *pass
);
185 char userName_
[IDENTIFIER_LENGTH
];
186 char dbName_
[IDENTIFIER_LENGTH
];
193 char dbName_
[IDENTIFIER_LENGTH
];
195 size_t maxSize_
; //maximum size of database
196 caddr_t dbStart_
; //address where the database is mapped
203 char indName_
[IDENTIFIER_LENGTH
];
204 int tblID_
; //table id of the table
205 void* tblPtr_
; //pointer to tuple in catalog table TABLE
206 IndexType indexType_
;
207 void* chunkPtr_
; //pointer to the index chunk
211 void *hashNodeChunk_
;
212 void *fstIndFld_
;//pointer to fisrt index field
215 class CatalogTableINDEX
217 Database
*systemDatabase_
;
219 CatalogTableINDEX(Database
*db
) { systemDatabase_
= db
; }
222 //last arg is OUT parameter which will give the pointer to
224 DbRetVal
insert(const char *name
, void *tblPtr
, int numFlds
, bool isUnique
,
225 void* chunk
, int bucketSize
, void *hChunk
, void *&tupleptr
);
227 //Second argument is OUT parameter which will contain the
228 //chunk pointer of this table
229 //Third argument is OUT parameter which will contain the
230 //pointer to the removed tuple
231 DbRetVal
remove(const char *name
, void *&chunk
, void *&hchunk
, void *&iptr
);
232 DbRetVal
get(const char *name
, void *&chunk
, void *&hchunk
, void *&iptr
);
233 DbRetVal
setChunkPtr(const char *name
, ObjectType tp
, void *chunk
, void *firstPage
, void *curPage
);
235 //get the number of indexes on table pointed by tblPtr
236 int getNumIndexes(void *tblPtr
);
238 char* getIndexName(void *tblPtr
, int pos
);
240 //gets all the index ptrs as array for the table pointed by tblPtr
241 void getIndexPtrs(void *tblPtr
, char **&array
);
243 static ChunkIterator
getIterator(void *iptr
);
244 static int getNoOfBuckets(void *iptr
);
245 static int getUnique(void *iptr
);
246 static char* getName(void *iptr
);
247 static int getOffsetOfFirstField(void *iptr
);
248 static IndexType
getType(void *iptr
);
255 void* indexPtr
; //pointer to tuple in catalog table INDEX
256 void* tablePtr
; //pointer to tuple in catalog table TABLE
257 void* fieldPtr
; //pointer to tuple in catalog table FIELD
261 class CatalogTableINDEXFIELD
263 Database
*systemDatabase_
;
265 CatalogTableINDEXFIELD(Database
*db
) { systemDatabase_
= db
; }
267 DbRetVal
insert(FieldNameList
&fldList
, void *indexPtr
,
268 void *tblPtr
, char **&fptr
);
270 DbRetVal
remove(void *iptr
);
272 DbRetVal
getFieldNameAndType(void *iptr
, char *&name
, DataType
&type
);
273 DbRetVal
getFieldInfo(void *index
, FieldList
&list
);
274 void printAllIndex();
275 ListIterator
getIndexListIterater(char *name
);
282 char fkName_
[IDENTIFIER_LENGTH
];
289 Database
*systemDatabase_
;
291 CatalogTableFK(Database
*db
) { systemDatabase_
= db
; }
292 DbRetVal
insert(char *name
, void *tFkPtr
,void *tPkPtr
);
293 DbRetVal
remove(void *tptr
);
294 void *getFkCTable(void* tptr
);
295 int getNumFkTable(void *ctptr
);
296 bool isFkTable(void *ctptr
);
297 void getPkTableName(void *ctptr
, char **&array
);
298 void getFkTableName(void *ctptr
, char **&array
);
299 int getNoOfPkTable(void *ctptr
);
300 int getNoOfFkTable(void *ctptr
);
301 DbRetVal
getPkFkFieldInfo(void *cpkptr
, void *cfkptr
, FieldNameList
&pklist
,FieldNameList
&pklist1
);
307 void* fkPtr_
;//pointer to tuple in catalog table CFK
312 class CatalogTableFKFIELD
314 Database
*systemDatabase_
;
316 CatalogTableFKFIELD(Database
*db
) { systemDatabase_
= db
; }
317 DbRetVal
insert(char *cFKName
, char **fkFldPtrs
, char **pkFldPtrs
,int totalFld
);
318 DbRetVal
remove(void *fptr
);