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
32 // chunk id 0 ->userChunkTable
34 // chunk id 10->DATABASE
38 // chunk id 14->ACCESS
40 // chunk id 16->INDEXFIELD
43 LockTableHashBucketId
= 1,
64 char tblName_
[IDENTIFIER_LENGTH
];
66 size_t length_
; //length of the tuple
73 class CatalogTableTABLE
75 Database
*systemDatabase_
;
77 CatalogTableTABLE(Database
*db
) { systemDatabase_
= db
; }
79 //Last argument is OUT parameter which will contain the
80 //pointer to the inserted tuple
81 DbRetVal
insert(const char *name
, int id
, size_t size
,
82 int numFlds
, void* chunk
, void *&tptr
);
84 //Second argument is OUT parameter which will contain the
85 //chunk pointer of this table
86 //Third argument is OUT parameter which will contain the
87 //pointer to the removed tuple
88 DbRetVal
remove(const char *name
, void *&chunk
, void *&tptr
);
90 DbRetVal
getChunkAndTblPtr(const char *name
, void *&chunk
, void *&tptr
);
97 char fldName_
[IDENTIFIER_LENGTH
];
98 int tblID_
; //table id where this field resides
99 void* tblPtr_
; //pointer to tuple in catalog table TABLE
101 size_t length_
; //length of the field
102 size_t offset_
; //offset (in bytes) into tuple
103 //currently default value is supported for string and binary
104 //less than length 32 bytes
105 char defaultValueBuf_
[DEFAULT_VALUE_BUF_LENGTH
];
113 class CatalogTableFIELD
115 Database
*systemDatabase_
;
117 CatalogTableFIELD(Database
*db
) { systemDatabase_
= db
; }
119 //returns -1 on error
120 DbRetVal
insert(FieldIterator
&iter
, int tblID
, void *tblPtr
);
122 DbRetVal
remove(void *tblPtr
);
124 //II argument is OUT parameter
125 //field list is populated from the catalog table for
126 // the table pointed by tblPtr
127 void getFieldInfo( void* tblPtr
, FieldList
&list
);
130 //returns the pointer to fields for the corresponding name
131 //in field name list as an array
132 DbRetVal
getFieldPtrs(FieldNameList
&fldList
,void *tptr
, char **&array
);
138 char userName_
[IDENTIFIER_LENGTH
];
139 char password_
[IDENTIFIER_LENGTH
];
142 class CatalogTableUSER
144 Database
*systemDatabase_
;
146 CatalogTableUSER(Database
*db
) { systemDatabase_
= db
; }
148 //returns -1 on error
149 DbRetVal
insert(const char *name
, const char *pass
);
150 DbRetVal
authenticate(const char *name
, const char *pass
,
151 bool &isAuthenticated
, bool &isDba
);
152 DbRetVal
remove(const char *name
);
153 DbRetVal
changePass(const char *name
, const char *pass
);
160 char userName_
[IDENTIFIER_LENGTH
];
161 char dbName_
[IDENTIFIER_LENGTH
];
168 char dbName_
[IDENTIFIER_LENGTH
];
170 size_t maxSize_
; //maximum size of database
171 caddr_t dbStart_
; //address where the database is mapped
178 char indName_
[IDENTIFIER_LENGTH
];
179 int tblID_
; //table id of the table
180 void* tblPtr_
; //pointer to tuple in catalog table TABLE
181 IndexType indexType_
;
182 void* chunkPtr_
; //pointer to the index chunk
186 void *hashNodeChunk_
;
190 class CatalogTableINDEX
192 Database
*systemDatabase_
;
194 CatalogTableINDEX(Database
*db
) { systemDatabase_
= db
; }
197 //last arg is OUT parameter which will give the pointer to
199 DbRetVal
insert(const char *name
, void *tblPtr
, int numFlds
,
200 void* chunk
, int bucketSize
, void *hChunk
, void *&tupleptr
);
202 //Second argument is OUT parameter which will contain the
203 //chunk pointer of this table
204 //Third argument is OUT parameter which will contain the
205 //pointer to the removed tuple
206 DbRetVal
remove(const char *name
, void *&chunk
, void *&hchunk
, void *&iptr
);
208 //get the number of indexes on table pointed by tblPtr
209 int getNumIndexes(void *tblPtr
);
211 char* getIndexName(void *tblPtr
, int pos
);
213 //gets all the index ptrs as array for the table pointed by tblPtr
214 void getIndexPtrs(void *tblPtr
, char **&array
);
216 static ChunkIterator
getIterator(void *iptr
);
217 static int getNoOfBuckets(void *iptr
);
224 void* indexPtr
; //pointer to tuple in catalog table INDEX
225 void* tablePtr
; //pointer to tuple in catalog table TABLE
226 void* fieldPtr
; //pointer to tuple in catalog table FIELD
230 class CatalogTableINDEXFIELD
232 Database
*systemDatabase_
;
234 CatalogTableINDEXFIELD(Database
*db
) { systemDatabase_
= db
; }
236 DbRetVal
insert(FieldNameList
&fldList
, void *indexPtr
,
237 void *tblPtr
, char **&fptr
);
239 DbRetVal
remove(void *iptr
);
241 DbRetVal
getFieldNameAndType(void *iptr
, char *&name
, DataType
&type
);