Symbian3/Examples/guid-6013a680-57f9-415b-8851-c4fa63356636/_write_perm_f_s2_8cpp_source.html
Week 32 contribution of PDK documentation content. See release notes for details. Fixes bug Bug 3582
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<h1>examples/SysLibs/FileStores/WritePermFS2/WritePermFS2.cpp</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">// Copyright (c) 2000-2009 Nokia Corporation and/or its subsidiary(-ies).</span>
<a name="l00002"></a>00002 <span class="comment">// All rights reserved.</span>
<a name="l00003"></a>00003 <span class="comment">// This component and the accompanying materials are made available</span>
<a name="l00004"></a>00004 <span class="comment">// under the terms of "Eclipse Public License v1.0"</span>
<a name="l00005"></a>00005 <span class="comment">// which accompanies this distribution, and is available</span>
<a name="l00006"></a>00006 <span class="comment">// at the URL "http://www.eclipse.org/legal/epl-v10.html".</span>
<a name="l00007"></a>00007 <span class="comment">//</span>
<a name="l00008"></a>00008 <span class="comment">// Initial Contributors:</span>
<a name="l00009"></a>00009 <span class="comment">// Nokia Corporation - initial contribution.</span>
<a name="l00010"></a>00010 <span class="comment">//</span>
<a name="l00011"></a>00011 <span class="comment">// Contributors:</span>
<a name="l00012"></a>00012 <span class="comment">//</span>
<a name="l00013"></a>00013 <span class="comment">// Description:</span>
<a name="l00014"></a>00014 <span class="comment">// Example to demonstrate use of CPermanentFileStore</span>
<a name="l00015"></a>00015 <span class="comment">// The Store root stream is an example of a persistent data structure</span>
<a name="l00016"></a>00016 <span class="comment">// The internal representation is the class CItemArray</span>
<a name="l00017"></a>00017 <span class="comment">//</span>
<a name="l00018"></a>00018
<a name="l00019"></a>00019
<a name="l00020"></a>00020 <span class="preprocessor">#include "CommonStreamStore.h"</span>
<a name="l00021"></a>00021 <span class="preprocessor">#include <s32file.h></span>
<a name="l00022"></a>00022
<a name="l00023"></a>00023 <span class="comment">// Create a permanent file store</span>
<a name="l00024"></a>00024 <span class="comment">// and initialise its stream structure</span>
<a name="l00025"></a>00025 LOCAL_C <span class="keywordtype">void</span> doMakeStoreL(<span class="keyword">const</span> TDesC& aName);
<a name="l00026"></a>00026
<a name="l00027"></a>00027 <span class="comment">// Use the store, preserving the stream structure</span>
<a name="l00028"></a>00028 LOCAL_C <span class="keywordtype">void</span> doUseStoreL(<span class="keyword">const</span> TDesC& aName);
<a name="l00029"></a>00029
<a name="l00030"></a>00030 <span class="comment">// Update the data in the store</span>
<a name="l00031"></a>00031 LOCAL_C <span class="keywordtype">void</span> doUpdateStoreL(CPersistentStore& aStore);
<a name="l00032"></a>00032
<a name="l00033"></a>00033 <span class="comment">// Display the store contents</span>
<a name="l00034"></a>00034 LOCAL_C <span class="keywordtype">void</span> doShowL(<span class="keyword">const</span> TDesC& aHeading,CPersistentStore& aStore);
<a name="l00035"></a>00035
<a name="l00036"></a>00036
<a name="l00037"></a>00037 <span class="keyword">typedef</span> TBuf<100> TItem;
<a name="l00038"></a>00038
<a name="l00039"></a>00039 <span class="comment">// The main object's in-memory representation</span>
<a name="l00040"></a>00040 <span class="keyword">class </span>CItemArray : <span class="keyword">public</span> CBase
<a name="l00041"></a>00041 {
<a name="l00042"></a>00042 <span class="keyword">public</span>:
<a name="l00043"></a>00043 <span class="keyword">static</span> TStreamId CreateL(CStreamStore& aStore);
<a name="l00044"></a>00044 <span class="comment">//</span>
<a name="l00045"></a>00045 ~CItemArray();
<a name="l00046"></a>00046 <span class="keyword">static</span> CItemArray* NewLC(CStreamStore& aStore,TStreamId anId);
<a name="l00047"></a>00047 <span class="keywordtype">void</span> RestoreL();
<a name="l00048"></a>00048 <span class="keywordtype">void</span> StoreL() <span class="keyword">const</span>;
<a name="l00049"></a>00049 <span class="keywordtype">void</span> ExternalizeL(RWriteStream& aStream) <span class="keyword">const</span>;
<a name="l00050"></a>00050 <span class="comment">//</span>
<a name="l00051"></a>00051 <span class="keywordtype">void</span> AddItemL(<span class="keyword">const</span> TItem& anItem);
<a name="l00052"></a>00052 <span class="keywordtype">void</span> RemoveItemL(TInt anIndex);
<a name="l00053"></a>00053 TInt Count() <span class="keyword">const</span>;
<a name="l00054"></a>00054 <span class="keywordtype">void</span> GetItemL(TItem& anItem,TInt anIndex) <span class="keyword">const</span>;
<a name="l00055"></a>00055 <span class="keyword">protected</span>:
<a name="l00056"></a>00056 CItemArray(CStreamStore& aStore);
<a name="l00057"></a>00057 <span class="keywordtype">void</span> ConstructL();
<a name="l00058"></a>00058 <span class="keywordtype">void</span> InternalizeL(RReadStream& aStream);
<a name="l00059"></a>00059 <span class="keyword">private</span>:
<a name="l00060"></a>00060 CStreamStore& iStore;
<a name="l00061"></a>00061 TStreamId iMyId;
<a name="l00062"></a>00062 CArrayFixFlat<TStreamId>* iArray;
<a name="l00063"></a>00063 };
<a name="l00064"></a>00064
<a name="l00065"></a>00065
<a name="l00066"></a>00066 <span class="comment">// The file name, extension and path for the file store</span>
<a name="l00067"></a>00067 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KFullNameOfFileStore,<span class="stringliteral">"\\epoc32ex\\data\\WritePermFS2.dat"</span>);
<a name="l00068"></a>00068
<a name="l00069"></a>00069
<a name="l00070"></a>00070 <span class="comment">// Do the example</span>
<a name="l00071"></a>00071 LOCAL_C <span class="keywordtype">void</span> doExampleL()
<a name="l00072"></a>00072 {
<a name="l00073"></a>00073 <span class="comment">// make sure directory exists</span>
<a name="l00074"></a>00074 fsSession.MkDirAll(KFullNameOfFileStore);
<a name="l00075"></a>00075 doMakeStoreL(KFullNameOfFileStore);
<a name="l00076"></a>00076 doUseStoreL(KFullNameOfFileStore);
<a name="l00077"></a>00077 }
<a name="l00078"></a>00078
<a name="l00079"></a>00079
<a name="l00080"></a>00080 LOCAL_C <span class="keywordtype">void</span> doMakeStoreL(<span class="keyword">const</span> TDesC& aName)
<a name="l00081"></a>00081 {
<a name="l00082"></a>00082 TParse filestorename;
<a name="l00083"></a>00083 fsSession.Parse(aName,filestorename);
<a name="l00084"></a>00084 <span class="comment">// construct file store object - the file to contain the</span>
<a name="l00085"></a>00085 <span class="comment">// the store replaces any existing file of the same name.</span>
<a name="l00086"></a>00086 CFileStore* store = CPermanentFileStore::ReplaceLC(fsSession,filestorename.FullName(),EFileRead|EFileWrite);
<a name="l00087"></a>00087 <span class="comment">// Easy way to set the layout type</span>
<a name="l00088"></a>00088 store->SetTypeL(store->Layout());
<a name="l00089"></a>00089
<a name="l00090"></a>00090 <span class="comment">// create the required stream for CItemArray</span>
<a name="l00091"></a>00091 TStreamId <span class="keywordtype">id</span>=CItemArray::CreateL(*store);
<a name="l00092"></a>00092
<a name="l00093"></a>00093 <span class="comment">// make it the root</span>
<a name="l00094"></a>00094 store->SetRootL(<span class="keywordtype">id</span>);
<a name="l00095"></a>00095
<a name="l00096"></a>00096 <span class="comment">// Commit changes to the store</span>
<a name="l00097"></a>00097 store->CommitL();
<a name="l00098"></a>00098
<a name="l00099"></a>00099 <span class="comment">// Show contents of the store</span>
<a name="l00100"></a>00100 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTxtStoreContent,<span class="stringliteral">"Store content ..."</span>);
<a name="l00101"></a>00101 doShowL(KTxtStoreContent,*store);
<a name="l00102"></a>00102
<a name="l00103"></a>00103 <span class="comment">// Cleanup the store</span>
<a name="l00104"></a>00104 CleanupStack::PopAndDestroy();
<a name="l00105"></a>00105 }
<a name="l00106"></a>00106
<a name="l00107"></a>00107
<a name="l00108"></a>00108 LOCAL_C <span class="keywordtype">void</span> doUseStoreL(<span class="keyword">const</span> TDesC& aName)
<a name="l00109"></a>00109 {
<a name="l00110"></a>00110 TParse filestorename;
<a name="l00111"></a>00111 fsSession.Parse(aName,filestorename);
<a name="l00112"></a>00112 <span class="comment">// construct file store object - specifying the file</span>
<a name="l00113"></a>00113 <span class="comment">// containing the store.</span>
<a name="l00114"></a>00114 <span class="comment">// Do not need to specify the file store type, this is</span>
<a name="l00115"></a>00115 <span class="comment">// specified by the file itself</span>
<a name="l00116"></a>00116 CFileStore* store = CFileStore::OpenL(fsSession,filestorename.FullName(),EFileRead|EFileWrite);
<a name="l00117"></a>00117
<a name="l00118"></a>00118 <span class="comment">// The standard form for using permanent file stores:</span>
<a name="l00119"></a>00119 <span class="comment">// 1. The store object is not owned by the updating code</span>
<a name="l00120"></a>00120 <span class="comment">// 2 Failure at any point during update, including the</span>
<a name="l00121"></a>00121 <span class="comment">// final commit, should result in Revert() being called</span>
<a name="l00122"></a>00122 <span class="comment">// on the store (before destruction).</span>
<a name="l00123"></a>00123
<a name="l00124"></a>00124 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTxtErrorOccurred,<span class="stringliteral">"\n** Error %d occured during store update"</span>);
<a name="l00125"></a>00125
<a name="l00126"></a>00126 TRAPD(error,doUpdateStoreL(*store));
<a name="l00127"></a>00127 <span class="keywordflow">if</span> (error!=KErrNone)
<a name="l00128"></a>00128 {
<a name="l00129"></a>00129 store->Revert();
<a name="l00130"></a>00130 console->Printf(KTxtErrorOccurred);
<a name="l00131"></a>00131 }
<a name="l00132"></a>00132
<a name="l00133"></a>00133 <span class="comment">// the store is not on the cleanup stack</span>
<a name="l00134"></a>00134 <span class="keyword">delete</span> store;
<a name="l00135"></a>00135 }
<a name="l00136"></a>00136
<a name="l00137"></a>00137
<a name="l00138"></a>00138 LOCAL_C <span class="keywordtype">void</span> doUpdateStoreL(CPersistentStore& aStore)
<a name="l00139"></a>00139 {
<a name="l00140"></a>00140 <span class="comment">// get the root stream into memory</span>
<a name="l00141"></a>00141 CItemArray* array=CItemArray::NewLC(aStore,aStore.Root());
<a name="l00142"></a>00142
<a name="l00143"></a>00143 <span class="comment">// Add some items</span>
<a name="l00144"></a>00144 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTxtHello,<span class="stringliteral">"hello"</span>);
<a name="l00145"></a>00145 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTxtWorld,<span class="stringliteral">" world!"</span>);
<a name="l00146"></a>00146
<a name="l00147"></a>00147 TItem item;
<a name="l00148"></a>00148 item = KTxtHello;
<a name="l00149"></a>00149 array->AddItemL(item);
<a name="l00150"></a>00150 item = KTxtWorld;
<a name="l00151"></a>00151 array->AddItemL(item);
<a name="l00152"></a>00152 <span class="comment">// Re-write the root stream with new data</span>
<a name="l00153"></a>00153 array->StoreL();
<a name="l00154"></a>00154 <span class="comment">// commit all changes</span>
<a name="l00155"></a>00155 aStore.CommitL();
<a name="l00156"></a>00156
<a name="l00157"></a>00157 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTxtAfterAdding,<span class="stringliteral">"After adding..."</span>);
<a name="l00158"></a>00158 doShowL(KTxtAfterAdding,aStore);
<a name="l00159"></a>00159
<a name="l00160"></a>00160 <span class="comment">// remove an item</span>
<a name="l00161"></a>00161 array->RemoveItemL(1); <span class="comment">// " world!"</span>
<a name="l00162"></a>00162 <span class="comment">// Re-write the root stream with new data</span>
<a name="l00163"></a>00163 array->StoreL();
<a name="l00164"></a>00164 <span class="comment">// commit all changes</span>
<a name="l00165"></a>00165 aStore.CommitL();
<a name="l00166"></a>00166
<a name="l00167"></a>00167 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTxtAfterRemoving,<span class="stringliteral">"After removing..."</span>);
<a name="l00168"></a>00168 doShowL(KTxtAfterRemoving,aStore);
<a name="l00169"></a>00169
<a name="l00170"></a>00170 <span class="comment">// Add an item</span>
<a name="l00171"></a>00171 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTxtCapWorld,<span class="stringliteral">" WORLD!"</span>);
<a name="l00172"></a>00172 item= KTxtCapWorld;
<a name="l00173"></a>00173 array->AddItemL(item);
<a name="l00174"></a>00174 <span class="comment">// Re-write the root stream with new data</span>
<a name="l00175"></a>00175 array->StoreL();
<a name="l00176"></a>00176 <span class="comment">// Discard all changes since last store commit</span>
<a name="l00177"></a>00177 aStore.Revert();
<a name="l00178"></a>00178
<a name="l00179"></a>00179 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTxtAfterRevert,<span class="stringliteral">"After revert..."</span>);
<a name="l00180"></a>00180 doShowL(KTxtAfterRevert,aStore);
<a name="l00181"></a>00181
<a name="l00182"></a>00182 <span class="comment">// array and aStore are not in snych after revert...</span>
<a name="l00183"></a>00183 <span class="comment">// restore in-memory version to match store version</span>
<a name="l00184"></a>00184 array->RestoreL();
<a name="l00185"></a>00185
<a name="l00186"></a>00186 <span class="comment">// Add the item again</span>
<a name="l00187"></a>00187 array->AddItemL(item);
<a name="l00188"></a>00188 <span class="comment">// Re-write the root stream with new data</span>
<a name="l00189"></a>00189 array->StoreL();
<a name="l00190"></a>00190 <span class="comment">// commit all changes</span>
<a name="l00191"></a>00191 aStore.CommitL();
<a name="l00192"></a>00192
<a name="l00193"></a>00193 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTxtAfterCommit,<span class="stringliteral">"After commit..."</span>);
<a name="l00194"></a>00194 doShowL(KTxtAfterCommit,aStore);
<a name="l00195"></a>00195
<a name="l00196"></a>00196 <span class="comment">// cleanup array</span>
<a name="l00197"></a>00197 CleanupStack::PopAndDestroy();
<a name="l00198"></a>00198 }
<a name="l00199"></a>00199
<a name="l00200"></a>00200 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTxtNewLine,<span class="stringliteral">"\n"</span>);
<a name="l00201"></a>00201 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KFormatType1,<span class="stringliteral">"\n%d item(s):"</span>);
<a name="l00202"></a>00202 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KFormatType2,<span class="stringliteral">"\n %S"</span>);
<a name="l00203"></a>00203 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KFormatType3,<span class="stringliteral">"\n[any key to continue]\n"</span>);
<a name="l00204"></a>00204
<a name="l00205"></a>00205
<a name="l00206"></a>00206 LOCAL_C <span class="keywordtype">void</span> doShowL(<span class="keyword">const</span> TDesC& aHeading,CPersistentStore& aStore)
<a name="l00207"></a>00207 {
<a name="l00208"></a>00208 <span class="comment">// Get an in-memory representation of the root stream</span>
<a name="l00209"></a>00209 CItemArray* array=CItemArray::NewLC(aStore,aStore.Root());
<a name="l00210"></a>00210
<a name="l00211"></a>00211 console->Printf(KTxtNewLine);
<a name="l00212"></a>00212 console->Printf(aHeading);
<a name="l00213"></a>00213 console->Printf(KFormatType1,array->Count());
<a name="l00214"></a>00214 <span class="keywordflow">for</span> (TInt ii=0;ii<array->Count();++ii)
<a name="l00215"></a>00215 {
<a name="l00216"></a>00216 <span class="comment">// for each item in the array</span>
<a name="l00217"></a>00217 <span class="comment">// get the item</span>
<a name="l00218"></a>00218 TItem item;
<a name="l00219"></a>00219 array->GetItemL(item,ii);
<a name="l00220"></a>00220 <span class="comment">// display the data</span>
<a name="l00221"></a>00221 console->Printf(KFormatType2,&item);
<a name="l00222"></a>00222 }
<a name="l00223"></a>00223 <span class="comment">// cleanup the array</span>
<a name="l00224"></a>00224 CleanupStack::PopAndDestroy();
<a name="l00225"></a>00225
<a name="l00226"></a>00226 console->Printf(KFormatType3);
<a name="l00227"></a>00227 console->Getch();
<a name="l00228"></a>00228 }
<a name="l00229"></a>00229
<a name="l00230"></a>00230
<a name="l00231"></a>00231 <span class="comment">//***************************************************************</span>
<a name="l00232"></a>00232 <span class="comment">//***************************************************************</span>
<a name="l00233"></a>00233
<a name="l00234"></a>00234 CItemArray::~CItemArray()
<a name="l00235"></a>00235 {
<a name="l00236"></a>00236 <span class="keyword">delete</span> iArray;
<a name="l00237"></a>00237 }
<a name="l00238"></a>00238
<a name="l00239"></a>00239 CItemArray::CItemArray(CStreamStore& aStore)
<a name="l00240"></a>00240 : iStore(aStore)
<a name="l00241"></a>00241 {}
<a name="l00242"></a>00242
<a name="l00243"></a>00243 TStreamId CItemArray::CreateL(CStreamStore& aStore)
<a name="l00244"></a>00244 <span class="comment">// create the stream representation of the class</span>
<a name="l00245"></a>00245 {
<a name="l00246"></a>00246 <span class="comment">// use a temporary CItemArray</span>
<a name="l00247"></a>00247 CItemArray* <span class="keyword">self</span>=<span class="keyword">new</span>(ELeave) CItemArray(aStore);
<a name="l00248"></a>00248 CleanupStack::PushL(<span class="keyword">self</span>);
<a name="l00249"></a>00249 <span class="comment">// construct object</span>
<a name="l00250"></a>00250 <span class="keyword">self</span>->ConstructL();
<a name="l00251"></a>00251 <span class="comment">// create new stream</span>
<a name="l00252"></a>00252 RStoreWriteStream outstream;
<a name="l00253"></a>00253 TStreamId <span class="keywordtype">id</span>=outstream.CreateLC(aStore);
<a name="l00254"></a>00254 <span class="comment">// write external rep</span>
<a name="l00255"></a>00255 <span class="keyword">self</span>->ExternalizeL(outstream);
<a name="l00256"></a>00256 <span class="comment">// commit stream</span>
<a name="l00257"></a>00257 outstream.CommitL();
<a name="l00258"></a>00258 <span class="comment">// cleanup stream and temporary self</span>
<a name="l00259"></a>00259 CleanupStack::PopAndDestroy(2);
<a name="l00260"></a>00260 <span class="keywordflow">return</span> id;
<a name="l00261"></a>00261 }
<a name="l00262"></a>00262
<a name="l00263"></a>00263 CItemArray* CItemArray::NewLC(CStreamStore& aStore,TStreamId anId)
<a name="l00264"></a>00264 <span class="comment">// construct a CItemArray from persistent storage</span>
<a name="l00265"></a>00265 {
<a name="l00266"></a>00266 CItemArray* <span class="keyword">self</span>=<span class="keyword">new</span>(ELeave) CItemArray(aStore);
<a name="l00267"></a>00267 CleanupStack::PushL(<span class="keyword">self</span>);
<a name="l00268"></a>00268 <span class="comment">// construct object</span>
<a name="l00269"></a>00269 <span class="keyword">self</span>->ConstructL();
<a name="l00270"></a>00270 <span class="comment">// set the stream id for StoreL/RestoreL</span>
<a name="l00271"></a>00271 <span class="keyword">self</span>->iMyId=anId;
<a name="l00272"></a>00272 <span class="comment">// restore the internal rep.</span>
<a name="l00273"></a>00273 <span class="keyword">self</span>->RestoreL();
<a name="l00274"></a>00274 <span class="keywordflow">return</span> <span class="keyword">self</span>;
<a name="l00275"></a>00275 }
<a name="l00276"></a>00276
<a name="l00277"></a>00277 <span class="keywordtype">void</span> CItemArray::StoreL() const
<a name="l00278"></a>00278 <span class="comment">// replace external rep. with internal one</span>
<a name="l00279"></a>00279 {
<a name="l00280"></a>00280 RStoreWriteStream outstream;
<a name="l00281"></a>00281 outstream.ReplaceLC(iStore,iMyId);
<a name="l00282"></a>00282 ExternalizeL(outstream);
<a name="l00283"></a>00283 outstream.CommitL();
<a name="l00284"></a>00284 CleanupStack::PopAndDestroy();
<a name="l00285"></a>00285 }
<a name="l00286"></a>00286
<a name="l00287"></a>00287 <span class="keywordtype">void</span> CItemArray::RestoreL()
<a name="l00288"></a>00288 <span class="comment">// replace internal rep with external one</span>
<a name="l00289"></a>00289 {
<a name="l00290"></a>00290 iArray->Reset();
<a name="l00291"></a>00291 RStoreReadStream instream;
<a name="l00292"></a>00292 instream.OpenLC(iStore,iMyId);
<a name="l00293"></a>00293 InternalizeL(instream);
<a name="l00294"></a>00294 CleanupStack::PopAndDestroy();
<a name="l00295"></a>00295 }
<a name="l00296"></a>00296
<a name="l00297"></a>00297 <span class="keywordtype">void</span> CItemArray::AddItemL(<span class="keyword">const</span> TItem& anItem)
<a name="l00298"></a>00298 <span class="comment">// add item to the collection</span>
<a name="l00299"></a>00299 {
<a name="l00300"></a>00300 <span class="comment">// write external rep of item</span>
<a name="l00301"></a>00301 RStoreWriteStream outstream;
<a name="l00302"></a>00302 TStreamId <span class="keywordtype">id</span>=outstream.CreateLC(iStore);
<a name="l00303"></a>00303 outstream<<anItem;
<a name="l00304"></a>00304 outstream.CommitL();
<a name="l00305"></a>00305 CleanupStack::PopAndDestroy();
<a name="l00306"></a>00306 <span class="comment">// add new stream id to the internal array</span>
<a name="l00307"></a>00307 iArray->AppendL(<span class="keywordtype">id</span>);
<a name="l00308"></a>00308 }
<a name="l00309"></a>00309
<a name="l00310"></a>00310 <span class="keywordtype">void</span> CItemArray::RemoveItemL(TInt anIndex)
<a name="l00311"></a>00311 <span class="comment">// remove an item from the collection</span>
<a name="l00312"></a>00312 {
<a name="l00313"></a>00313 <span class="comment">// remove the stream from the store</span>
<a name="l00314"></a>00314 iStore.DeleteL((*iArray)[anIndex]);
<a name="l00315"></a>00315 <span class="comment">// remove the entry from the internal array</span>
<a name="l00316"></a>00316 iArray->Delete(anIndex);
<a name="l00317"></a>00317 }
<a name="l00318"></a>00318
<a name="l00319"></a>00319 TInt CItemArray::Count()<span class="keyword"> const</span>
<a name="l00320"></a>00320 <span class="keyword"> </span>{
<a name="l00321"></a>00321 <span class="keywordflow">return</span> iArray->Count();
<a name="l00322"></a>00322 }
<a name="l00323"></a>00323
<a name="l00324"></a>00324 <span class="keywordtype">void</span> CItemArray::GetItemL(TItem& anItem,TInt anIndex) <span class="keyword">const</span>
<a name="l00325"></a>00325 <span class="comment">// retrieve an item from the store</span>
<a name="l00326"></a>00326 {
<a name="l00327"></a>00327 RStoreReadStream instream;
<a name="l00328"></a>00328 instream.OpenLC(iStore,(*iArray)[anIndex]);
<a name="l00329"></a>00329 instream>>anItem;
<a name="l00330"></a>00330 CleanupStack::PopAndDestroy();
<a name="l00331"></a>00331 }
<a name="l00332"></a>00332
<a name="l00333"></a>00333 <span class="keywordtype">void</span> CItemArray::ConstructL()
<a name="l00334"></a>00334 {
<a name="l00335"></a>00335 iArray=<span class="keyword">new</span>(ELeave) CArrayFixFlat<TStreamId>(8);
<a name="l00336"></a>00336 }
<a name="l00337"></a>00337
<a name="l00338"></a>00338 <span class="keywordtype">void</span> CItemArray::ExternalizeL(RWriteStream& aStream)<span class="keyword"> const</span>
<a name="l00339"></a>00339 <span class="keyword"> </span>{
<a name="l00340"></a>00340 <span class="comment">// stream out the array</span>
<a name="l00341"></a>00341 aStream<<*iArray;
<a name="l00342"></a>00342 }
<a name="l00343"></a>00343
<a name="l00344"></a>00344 <span class="keywordtype">void</span> CItemArray::InternalizeL(RReadStream& aStream)
<a name="l00345"></a>00345 {
<a name="l00346"></a>00346 <span class="comment">// stream in the array</span>
<a name="l00347"></a>00347 aStream>>*iArray;
<a name="l00348"></a>00348 }
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