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 ***************************************************************************/
18 #include<CatalogTables.h>
25 void TableDef::reset()
30 int TableDef::addField(const char *name
, DataType type
, size_t length
,
31 const void *defaultValue
, bool notNull
, bool autoIn
)
33 if (name
== NULL
) return (int)ErrBadArg
;
34 if(strlen(name
)>IDENTIFIER_LENGTH
)
36 printError(ErrBadRange
,"Field name should not exceed 64 character");
37 return (int)ErrBadRange
;
39 // The following code checks for duplicates
40 FieldIterator iter
= getFieldIterator();
41 while (iter
.hasElement())
43 FieldDef
*def
= iter
.nextElement();
44 if (! strcmp(def
->fldName_
, name
)) {
45 printError(ErrAlready
, "Field %s already Exists", name
);
46 return (int) ErrAlready
;
50 if (!Util::isIdentifier((char*)name
)) {
51 printError(ErrBadArg
, "fieldname contains invalid characters");
52 return (int) ErrBadArg
;
55 strcpy(fldDef
.fldName_
, name
);
56 fldDef
.fldName_
[IDENTIFIER_LENGTH
] = '\0';
58 fldDef
.length_
= AllDataType::size(type
, length
);
60 if (defaultValue
!= NULL
&& *(char *)defaultValue
!= '\0')
62 fldDef
.isDefault_
= true;
63 if (typeBinary
== type
) {
64 const char *p
= (const char *) defaultValue
;
66 if (! isxdigit((int)(*p
++)) ) {
67 printError(ErrBadArg
, "Invalid hexadecimal value");
68 return (int) ErrBadArg
;
72 os::memcpy(fldDef
.defaultValueBuf_
, defaultValue
, DEFAULT_VALUE_BUF_LENGTH
);
76 fldDef
.isDefault_
= false;
77 os::memset(fldDef
.defaultValueBuf_
,0, DEFAULT_VALUE_BUF_LENGTH
);
79 fldDef
.isNull_
= notNull
;
80 fldDef
.isAutoIncrement_
= autoIn
;
81 //os::memset(fldDef.autoVal_,0, DEFAULT_VALUE_BUF_LENGTH);
87 fldDef
.length_
= os::align(length
);
90 fldDef
.length_
= os::align(AllDataType::size(type
));
93 fldDef
.offset_
= fldList
.getTupleSize();
94 int ret
= fldList
.append(fldDef
);
95 if (0 == ret
) fldCount
++;
99 int TableDef::dropField(const char *name
)
101 int ret
= fldList
.remove(name
);
102 if (0 == ret
) fldCount
--;
106 int TableDef::getFieldCount()
111 size_t TableDef::getTupleSize()
114 FieldIterator iter
= getFieldIterator();
115 while (iter
.hasElement())
117 FieldDef
*def
= iter
.nextElement();
118 if (def
->type_
== typeVarchar
) length
+= sizeof (void *);
119 else length
= length
+ def
->length_
;
124 bool TableDef::isVarcharPresentInSchema(FieldIterator
&iter
)
126 while (iter
.hasElement())
128 FieldDef
*fDef
= iter
.nextElement();
129 if (fDef
->type_
== typeVarchar
) return true;