|
1 // Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies). |
|
2 // All rights reserved. |
|
3 // This component and the accompanying materials are made available |
|
4 // under the terms of "Eclipse Public License v1.0" |
|
5 // which accompanies this distribution, and is available |
|
6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
|
7 // |
|
8 // Initial Contributors: |
|
9 // Nokia Corporation - initial contribution. |
|
10 // |
|
11 // Contributors: |
|
12 // |
|
13 // Description: |
|
14 // ///////////////////// TSqlBufRIterator class ///////////////////////////////////////// |
|
15 // |
|
16 // |
|
17 |
|
18 /** |
|
19 |
|
20 Initializes the iterator. |
|
21 After the initialization the iterator points to the first flat buffer field - 1. |
|
22 |
|
23 @param aBuf A reference to the buffer which will be iterated. |
|
24 */ |
|
25 inline void TSqlBufRIterator::Set(const RSqlBufFlat& aBuf) |
|
26 { |
|
27 iBegin = aBuf.Header(); |
|
28 iCurrent = iBegin - 1; |
|
29 iEnd = iBegin + aBuf.Count(); |
|
30 } |
|
31 |
|
32 /** |
|
33 Moves to the next flat buffer field |
|
34 |
|
35 @return False if there are no more fields to be iterated. |
|
36 */ |
|
37 inline TBool TSqlBufRIterator::Next() |
|
38 { |
|
39 return ++iCurrent < iEnd; |
|
40 } |
|
41 |
|
42 /** |
|
43 Moves to the specified field in the flat buffer. |
|
44 |
|
45 @param aIndex Field index |
|
46 */ |
|
47 inline void TSqlBufRIterator::MoveTo(TInt aIndex) |
|
48 { |
|
49 __SQLASSERT((iBegin + (TUint)aIndex) < iEnd, ESqlPanicBadArgument); |
|
50 iCurrent = iBegin + aIndex; |
|
51 } |
|
52 |
|
53 /** |
|
54 @return True if the current flat buffer field is "Present" |
|
55 */ |
|
56 inline TBool TSqlBufRIterator::IsPresent() const |
|
57 { |
|
58 __SQLASSERT(iCurrent >= iBegin && iCurrent < iEnd, ESqlPanicInternalError); |
|
59 return iCurrent->iPos > 0; |
|
60 } |
|
61 |
|
62 /** |
|
63 @return Current flat buffer field type. One of TSqlColumnType enum item values or ESqlText8. |
|
64 */ |
|
65 inline TInt TSqlBufRIterator::Type() const |
|
66 { |
|
67 __SQLASSERT(iCurrent >= iBegin && iCurrent < iEnd, ESqlPanicInternalError); |
|
68 return iCurrent->Type(); |
|
69 } |
|
70 |
|
71 /** |
|
72 @return Current flat buffer field size |
|
73 */ |
|
74 inline TInt TSqlBufRIterator::Size() const |
|
75 { |
|
76 __SQLASSERT(iCurrent >= iBegin && iCurrent < iEnd, ESqlPanicInternalError); |
|
77 return Type() == ESqlText ? iCurrent->Size() / sizeof(TUint16) : iCurrent->Size(); |
|
78 } |
|
79 |
|
80 |
|
81 /////////////////////////////////////////////////////////////////////////////////////////////////////////// |
|
82 //////////////////////// TSqlBufWIterator class ////////////////////////////////// |
|
83 /////////////////////////////////////////////////////////////////////////////////////////////////////////// |
|
84 |
|
85 /** |
|
86 Initializes the iterator. |
|
87 After the initialization the iterator points to the first flat buffer field - 1. |
|
88 |
|
89 @param aBuf A reference to the buffer which will be iterated. |
|
90 */ |
|
91 inline void TSqlBufWIterator::Set(RSqlBufFlat& aBuf) |
|
92 { |
|
93 iBuf = &aBuf; |
|
94 iIndex = -1; |
|
95 } |
|
96 |
|
97 /** |
|
98 Moves to the next flat buffer field |
|
99 |
|
100 @return False if there are no more fields to be iterated. |
|
101 */ |
|
102 inline TBool TSqlBufWIterator::Next() |
|
103 { |
|
104 __SQLASSERT(iBuf != NULL, ESqlPanicInternalError); |
|
105 return ++iIndex < iBuf->Count(); |
|
106 } |
|
107 |
|
108 /** |
|
109 Moves to the specified field in the flat buffer. |
|
110 |
|
111 @param aIndex Field index |
|
112 */ |
|
113 inline void TSqlBufWIterator::MoveTo(TInt aIndex) |
|
114 { |
|
115 __SQLASSERT(iBuf != NULL, ESqlPanicInternalError); |
|
116 __SQLASSERT((TUint)aIndex < iBuf->Count(), ESqlPanicInternalError); |
|
117 iIndex = aIndex; |
|
118 } |
|
119 |
|
120 /** |
|
121 Sets the current flat buffer field to NULL. |
|
122 */ |
|
123 inline void TSqlBufWIterator::SetNull() |
|
124 { |
|
125 __SQLASSERT(iBuf != NULL, ESqlPanicInternalError); |
|
126 __SQLASSERT((TUint)iIndex < iBuf->Count(), ESqlPanicInternalError); |
|
127 (void)iBuf->SetField(iIndex, ESqlNull, NULL, 0); |
|
128 } |
|
129 |
|
130 /** |
|
131 Sets the current flat buffer field as "Not present". |
|
132 |
|
133 @param aType Field type. One of TSqlColumnType enum item values or ESqlText8. |
|
134 @param aLength Field length in bytes |
|
135 */ |
|
136 inline void TSqlBufWIterator::SetAsNotPresent(TInt aType, TInt aLength) |
|
137 { |
|
138 __SQLASSERT(::IsSequenceSqlType(aType), ESqlPanicBadArgument); |
|
139 __SQLASSERT(aLength >= 0, ESqlPanicBadArgument); |
|
140 __SQLASSERT(iBuf != NULL, ESqlPanicInternalError); |
|
141 __SQLASSERT((TUint)iIndex < iBuf->Count(), ESqlPanicInternalError); |
|
142 iBuf->SetField(iIndex, aType, NULL, aType == ESqlText ? aLength * sizeof(TUint16) : aLength); |
|
143 } |
|
144 |
|
145 /** |
|
146 Initializes current flat buffer field with an integer value. |
|
147 |
|
148 @param aValue An integer value to be set as a field content |
|
149 |
|
150 @return KErrNone, The operation has completed successfully; |
|
151 KErrNoMemory, Out of memory condition has occured. |
|
152 */ |
|
153 inline TInt TSqlBufWIterator::SetInt(TInt aValue) |
|
154 { |
|
155 __SQLASSERT(iBuf != NULL, ESqlPanicInternalError); |
|
156 __SQLASSERT((TUint)iIndex < iBuf->Count(), ESqlPanicInternalError); |
|
157 return iBuf->SetField(iIndex, ESqlInt, &aValue, sizeof(TInt)); |
|
158 } |
|
159 |
|
160 /** |
|
161 Initializes current flat buffer field with an 64 bit integer value. |
|
162 |
|
163 @param aValue A 64 bit integer value to be set as a field content |
|
164 |
|
165 @return KErrNone, The operation has completed successfully; |
|
166 KErrNoMemory, Out of memory condition has occured. |
|
167 */ |
|
168 inline TInt TSqlBufWIterator::SetInt64(TInt64 aValue) |
|
169 { |
|
170 __SQLASSERT(iBuf != NULL, ESqlPanicInternalError); |
|
171 __SQLASSERT((TUint)iIndex < iBuf->Count(), ESqlPanicInternalError); |
|
172 return iBuf->SetField(iIndex, ESqlInt64, &aValue, sizeof(TInt64)); |
|
173 } |
|
174 |
|
175 /** |
|
176 Initializes current flat buffer field with a real value. |
|
177 |
|
178 @param aValue A real value to be set as a field content |
|
179 |
|
180 @return KErrNone, The operation has completed successfully; |
|
181 KErrNoMemory, Out of memory condition has occured. |
|
182 */ |
|
183 inline TInt TSqlBufWIterator::SetReal(TReal aValue) |
|
184 { |
|
185 __SQLASSERT(iBuf != NULL, ESqlPanicInternalError); |
|
186 __SQLASSERT((TUint)iIndex < iBuf->Count(), ESqlPanicInternalError); |
|
187 return iBuf->SetField(iIndex, ESqlReal, &aValue, sizeof(TReal)); |
|
188 } |
|
189 |
|
190 /** |
|
191 Initializes current flat buffer field with a block of binary data. |
|
192 |
|
193 @param aValue An 8 bit descriptor pointing to the block of data to be set as a field content. |
|
194 |
|
195 @return KErrNone, The operation has completed successfully; |
|
196 KErrNoMemory, Out of memory condition has occured. |
|
197 */ |
|
198 inline TInt TSqlBufWIterator::SetBinary(const TDesC8& aValue) |
|
199 { |
|
200 __SQLASSERT(iBuf != NULL, ESqlPanicInternalError); |
|
201 __SQLASSERT((TUint)iIndex < iBuf->Count(), ESqlPanicInternalError); |
|
202 return iBuf->SetField(iIndex, ESqlBinary, aValue.Ptr(), aValue.Length()); |
|
203 } |
|
204 |
|
205 /** |
|
206 Initializes current flat buffer field with a block of 16 bit text. |
|
207 |
|
208 @param aValue A 16 bit descriptor pointing to the block of text to be set as a field content. |
|
209 |
|
210 @return KErrNone, The operation has completed successfully; |
|
211 KErrNoMemory, Out of memory condition has occured. |
|
212 */ |
|
213 inline TInt TSqlBufWIterator::SetText(const TDesC16& aValue) |
|
214 { |
|
215 __SQLASSERT(iBuf != NULL, ESqlPanicInternalError); |
|
216 __SQLASSERT((TUint)iIndex < iBuf->Count(), ESqlPanicInternalError); |
|
217 return iBuf->SetField(iIndex, ESqlText, aValue.Ptr(), aValue.Length() * sizeof(TUint16)); |
|
218 } |
|
219 |
|
220 |
|
221 /** |
|
222 Initializes current flat buffer field with a zeroblob of the specified size. |
|
223 |
|
224 @param aSize The size, in bytes, of the zeroblob to be set as the field content. |
|
225 |
|
226 @return KErrNone, The operation has completed successfully; |
|
227 KErrNoMemory, Out of memory condition has occured. |
|
228 */ |
|
229 inline TInt TSqlBufWIterator::SetZeroBlob(TInt aSize) |
|
230 { |
|
231 __SQLASSERT(iBuf != NULL, ESqlPanicInternalError); |
|
232 __SQLASSERT((TUint)iIndex < iBuf->Count(), ESqlPanicInternalError); |
|
233 return iBuf->SetField(iIndex, ESqlZeroBlob, &aSize, sizeof(TInt)); |
|
234 } |