Symbian3/Examples/guid-6013a680-57f9-415b-8851-c4fa63356636/_write_to_embedded_8cpp_source.html
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<h1>examples/SysLibs/Streams/WriteToEmbedded/WriteToEmbedded.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 uses an embedded store.</span>
<a name="l00015"></a>00015 <span class="comment">// This example uses a permanent file store. It constructs a CMainClass object</span>
<a name="l00016"></a>00016 <span class="comment">// which has a CClassABC object as a component. The CClassABC object itself</span>
<a name="l00017"></a>00017 <span class="comment">// has other components and its structure is the same as found in the</span>
<a name="l00018"></a>00018 <span class="comment">// WriteToMany example.</span>
<a name="l00019"></a>00019 <span class="comment">// Here, the CClassABC component object network is stored in an embedded store.</span>
<a name="l00020"></a>00020 <span class="comment">// The example:</span>
<a name="l00021"></a>00021 <span class="comment">// creates a permanent file store</span>
<a name="l00022"></a>00022 <span class="comment">// constructs a CMainClass object. This results in the construction</span>
<a name="l00023"></a>00023 <span class="comment">// of a CClassABC objet network which is stored in its own embedded</span>
<a name="l00024"></a>00024 <span class="comment">// store (within the main store). </span>
<a name="l00025"></a>00025 <span class="comment">// stores the CMainClass object in its own stream in the main store</span>
<a name="l00026"></a>00026 <span class="comment">// and makes that stream the root stream.</span>
<a name="l00027"></a>00027 <span class="comment">// closes the store and deletes the CMainClass object from memory</span>
<a name="l00028"></a>00028 <span class="comment">// re-opens the permanent file store</span>
<a name="l00029"></a>00029 <span class="comment">// restores the CMainClass object and opens the embedded store. As the </span>
<a name="l00030"></a>00030 <span class="comment">// the contained CClassABC object itself has components which are only </span>
<a name="l00031"></a>00031 <span class="comment">// loaded in when needed, then the embedded store is kept open.</span>
<a name="l00032"></a>00032 <span class="comment">// Displays the content of the CClassA, CClassB and CClassC objects.</span>
<a name="l00033"></a>00033 <span class="comment">// Deletes the CClassABC object from CMainClass and deletes its representation</span>
<a name="l00034"></a>00034 <span class="comment">// from the permanent file store. Note that knowledge of the detailed</span>
<a name="l00035"></a>00035 <span class="comment">// structure of the CClassABC object network is not needed. </span>
<a name="l00036"></a>00036 <span class="comment">// Attempts to redisplay the content of the CClassA, CClassB and CClassC </span>
<a name="l00037"></a>00037 <span class="comment">// objects; this should fail as they have been deleted.</span>
<a name="l00038"></a>00038 <span class="comment">// closes the store and deletes the CMainClass object from memory.</span>
<a name="l00039"></a>00039 <span class="comment">// Notes:</span>
<a name="l00040"></a>00040 <span class="comment">// The file name and extension of the direct file store is "WriteToEmbedded.dat".</span>
<a name="l00041"></a>00041 <span class="comment">// and will be created in the "\data\" folder of the writable drive.</span>
<a name="l00042"></a>00042 <span class="comment">//</span>
<a name="l00043"></a>00043
<a name="l00044"></a>00044 <span class="preprocessor">#include "WriteToEmbedded.h"</span>
<a name="l00045"></a>00045 <span class="comment">//***************************************************************</span>
<a name="l00046"></a>00046 <span class="comment">//</span>
<a name="l00047"></a>00047 <span class="comment">// Implementations</span>
<a name="l00048"></a>00048 <span class="comment">//***************************************************************</span>
<a name="l00049"></a>00049
<a name="l00050"></a>00050 <span class="comment">// The file name, extension and path for the file store</span>
<a name="l00051"></a>00051 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KFullNameOfFileStore,<span class="stringliteral">"\\epoc32ex\\data\\WriteToEmbedded.dat"</span>);
<a name="l00052"></a>00052
<a name="l00053"></a>00053 <span class="comment">// Do the example</span>
<a name="l00054"></a>00054 LOCAL_C <span class="keywordtype">void</span> doExampleL()
<a name="l00055"></a>00055 {
<a name="l00056"></a>00056 <span class="comment">// make sure directory exists</span>
<a name="l00057"></a>00057 fsSession.MkDirAll(KFullNameOfFileStore);
<a name="l00058"></a>00058 doMakeAndStoreL(KFullNameOfFileStore);
<a name="l00059"></a>00059 doDeleteComponentL(KFullNameOfFileStore);
<a name="l00060"></a>00060 }
<a name="l00061"></a>00061
<a name="l00062"></a>00062 LOCAL_C <span class="keywordtype">void</span> doMakeAndStoreL(<span class="keyword">const</span> TDesC& aName)
<a name="l00063"></a>00063 {
<a name="l00064"></a>00064 <span class="comment">// Create (replace, if it exists) the permanent file store</span>
<a name="l00065"></a>00065 TParse filestorename;
<a name="l00066"></a>00066 fsSession.Parse(aName,filestorename);
<a name="l00067"></a>00067 CFileStore* store = CPermanentFileStore::ReplaceLC(fsSession,filestorename.FullName(),EFileWrite);
<a name="l00068"></a>00068
<a name="l00069"></a>00069 <span class="comment">// Must say what kind of file store.</span>
<a name="l00070"></a>00070 store->SetTypeL(KPermanentFileStoreLayoutUid);
<a name="l00071"></a>00071
<a name="l00072"></a>00072 <span class="comment">// Construct a main object and its component</span>
<a name="l00073"></a>00073 <span class="comment">// CClassABC object; the CClassABC component object</span>
<a name="l00074"></a>00074 <span class="comment">// and its components are stored in an embedded store</span>
<a name="l00075"></a>00075 <span class="comment">// within the main store. </span>
<a name="l00076"></a>00076 <a class="code" href="class_c_main_class.html">CMainClass</a>* theMain = CMainClass::NewLC(*store);
<a name="l00077"></a>00077
<a name="l00078"></a>00078 <span class="comment">// Store the CMainClass object in its own stream </span>
<a name="l00079"></a>00079 <span class="comment">// in the top level store</span>
<a name="l00080"></a>00080 TStreamId theId = theMain->StoreL();
<a name="l00081"></a>00081
<a name="l00082"></a>00082 <span class="comment">// Set this stream id as the root stream</span>
<a name="l00083"></a>00083 store->SetRootL(theId);
<a name="l00084"></a>00084
<a name="l00085"></a>00085 <span class="comment">// Commit theses changes to the top level store</span>
<a name="l00086"></a>00086 store->CommitL();
<a name="l00087"></a>00087
<a name="l00088"></a>00088 <span class="comment">// Destroy:</span>
<a name="l00089"></a>00089 <span class="comment">// the CMainClass object,</span>
<a name="l00090"></a>00090 <span class="comment">// the permanent file store object (closes the file)</span>
<a name="l00091"></a>00091 CleanupStack::PopAndDestroy(2);
<a name="l00092"></a>00092 }
<a name="l00093"></a>00093
<a name="l00094"></a>00094 LOCAL_C <span class="keywordtype">void</span> doDeleteComponentL(<span class="keyword">const</span> TDesC& aName)
<a name="l00095"></a>00095 {
<a name="l00096"></a>00096 <span class="comment">// Open the permanent file store</span>
<a name="l00097"></a>00097 TParse filestorename;
<a name="l00098"></a>00098 fsSession.Parse(aName,filestorename);
<a name="l00099"></a>00099 CFileStore* store = CPermanentFileStore::OpenLC(fsSession,filestorename.FullName(),EFileRead|EFileWrite);
<a name="l00100"></a>00100
<a name="l00101"></a>00101 <span class="comment">// Restore the main object</span>
<a name="l00102"></a>00102 <a class="code" href="class_c_main_class.html">CMainClass</a>* theMain = CMainClass::NewLC(*store,store->Root());
<a name="l00103"></a>00103
<a name="l00104"></a>00104 <span class="comment">// Show the content of the classes contained by CClassABC,</span>
<a name="l00105"></a>00105 <span class="comment">// loading as needed</span>
<a name="l00106"></a>00106 <a class="code" href="class_c_class_a_b_c.html">CClassABC</a>* abc = theMain->PtrAbc();
<a name="l00107"></a>00107
<a name="l00108"></a>00108 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTxtClassAContent,<span class="stringliteral">"CClassA content ..."</span>);
<a name="l00109"></a>00109 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTxtClassBContent,<span class="stringliteral">"CClassB content ..."</span>);
<a name="l00110"></a>00110 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTxtClassCContent,<span class="stringliteral">"CClassC content ..."</span>);
<a name="l00111"></a>00111 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTxtClassABCDeleted,<span class="stringliteral">"CClassABC component deleted"</span>);
<a name="l00112"></a>00112
<a name="l00113"></a>00113 <span class="keywordflow">if</span> (abc)
<a name="l00114"></a>00114 {
<a name="l00115"></a>00115 doShow(KTxtClassAContent,*abc->PtrA());
<a name="l00116"></a>00116 doShow(KTxtClassBContent,*abc->PtrBL());
<a name="l00117"></a>00117 doShow(KTxtClassCContent,*abc->PtrC());
<a name="l00118"></a>00118 }
<a name="l00119"></a>00119 <span class="keywordflow">else</span>
<a name="l00120"></a>00120 doShow(KTxtClassABCDeleted);
<a name="l00121"></a>00121
<a name="l00122"></a>00122 <span class="comment">// remove the CClassABC component from CMainClass and</span>
<a name="l00123"></a>00123 <span class="comment">// and remove its representation from the store</span>
<a name="l00124"></a>00124 theMain->RemoveAbcL();
<a name="l00125"></a>00125
<a name="l00126"></a>00126 <span class="comment">// Try and show the contents again; the pointer</span>
<a name="l00127"></a>00127 <span class="comment">// abc should now be NULL</span>
<a name="l00128"></a>00128 abc = theMain->PtrAbc();
<a name="l00129"></a>00129 <span class="keywordflow">if</span> (abc)
<a name="l00130"></a>00130 {
<a name="l00131"></a>00131 doShow(KTxtClassAContent,*abc->PtrA());
<a name="l00132"></a>00132 doShow(KTxtClassBContent,*abc->PtrBL());
<a name="l00133"></a>00133 doShow(KTxtClassCContent,*abc->PtrC());
<a name="l00134"></a>00134 }
<a name="l00135"></a>00135 <span class="keywordflow">else</span>
<a name="l00136"></a>00136 doShow(KTxtClassABCDeleted);
<a name="l00137"></a>00137
<a name="l00138"></a>00138 <span class="comment">// Destroy:</span>
<a name="l00139"></a>00139 <span class="comment">// the CMainClass object, </span>
<a name="l00140"></a>00140 <span class="comment">// the permanent file store object (closes the file) </span>
<a name="l00141"></a>00141 CleanupStack::PopAndDestroy(2);
<a name="l00142"></a>00142 }
<a name="l00143"></a>00143
<a name="l00144"></a>00144 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTxtNewLine,<span class="stringliteral">"\n"</span>);
<a name="l00145"></a>00145 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KFormatType1,<span class="stringliteral">"\n%S, "</span>);
<a name="l00146"></a>00146 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KFormatType2,<span class="stringliteral">"%d, "</span>);
<a name="l00147"></a>00147 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KFormatType3,<span class="stringliteral">"%u "</span>);
<a name="l00148"></a>00148 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KFormatType4,<span class="stringliteral">"%u, "</span>);
<a name="l00149"></a>00149 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KFormatType5,<span class="stringliteral">"%f "</span>);
<a name="l00150"></a>00150
<a name="l00151"></a>00151 LOCAL_C <span class="keywordtype">void</span> doShow(<span class="keyword">const</span> TDesC& aComment)
<a name="l00152"></a>00152 {
<a name="l00153"></a>00153 console->Printf(KTxtNewLine);
<a name="l00154"></a>00154 console->Printf(aComment);
<a name="l00155"></a>00155 console->Printf(KTxtNewLine);
<a name="l00156"></a>00156 }
<a name="l00157"></a>00157
<a name="l00158"></a>00158 LOCAL_C <span class="keywordtype">void</span> doShow(<span class="keyword">const</span> TDesC& aHeading,<span class="keyword">const</span> <a class="code" href="class_c_class_a.html">CClassA</a>& anA)
<a name="l00159"></a>00159 {
<a name="l00160"></a>00160 console->Printf(KTxtNewLine);
<a name="l00161"></a>00161 console->Printf(aHeading);
<a name="l00162"></a>00162 console->Printf(KFormatType1,anA.iVarBuf);
<a name="l00163"></a>00163 console->Printf(KFormatType2,anA.iIntValue);
<a name="l00164"></a>00164 console->Printf(KFormatType3,anA.iUintValue);
<a name="l00165"></a>00165 console->Printf(KTxtNewLine);
<a name="l00166"></a>00166 }
<a name="l00167"></a>00167
<a name="l00168"></a>00168 LOCAL_C <span class="keywordtype">void</span> doShow(<span class="keyword">const</span> TDesC& aHeading,<span class="keyword">const</span> CClassB& aB)
<a name="l00169"></a>00169 {
<a name="l00170"></a>00170 console->Printf(KTxtNewLine);
<a name="l00171"></a>00171 console->Printf(aHeading);
<a name="l00172"></a>00172 console->Printf(KFormatType1,&aB.iFixBuf);
<a name="l00173"></a>00173 console->Printf(KFormatType2,aB.iIntValue);
<a name="l00174"></a>00174 console->Printf(KFormatType4,aB.iUintValue);
<a name="l00175"></a>00175 console->Printf(KFormatType5,aB.iRealValue);
<a name="l00176"></a>00176 console->Printf(KTxtNewLine);
<a name="l00177"></a>00177 }
<a name="l00178"></a>00178
<a name="l00179"></a>00179 LOCAL_C <span class="keywordtype">void</span> doShow(<span class="keyword">const</span> TDesC& aHeading,<span class="keyword">const</span> CClassC& aC)
<a name="l00180"></a>00180 {
<a name="l00181"></a>00181 console->Printf(KTxtNewLine);
<a name="l00182"></a>00182 console->Printf(aHeading);
<a name="l00183"></a>00183 console->Printf(KFormatType1,&aC.iFixBuf);
<a name="l00184"></a>00184 console->Printf(KTxtNewLine);
<a name="l00185"></a>00185 }
<a name="l00186"></a>00186
<a name="l00187"></a>00187 <span class="comment">//***************************************************************</span>
<a name="l00188"></a>00188 <span class="comment">//</span>
<a name="l00189"></a>00189 <span class="comment">// CMainClass Implementation</span>
<a name="l00190"></a>00190 <span class="comment">//</span>
<a name="l00191"></a>00191 <span class="comment">//***************************************************************</span>
<a name="l00192"></a>00192 <a class="code" href="class_c_main_class.html">CMainClass</a>* CMainClass::NewLC(CStreamStore& aStore)
<a name="l00193"></a>00193 {
<a name="l00194"></a>00194 <a class="code" href="class_c_main_class.html">CMainClass</a>* <span class="keyword">self</span> = <span class="keyword">new</span> (ELeave) <a class="code" href="class_c_main_class.html">CMainClass</a>(aStore);
<a name="l00195"></a>00195 CleanupStack::PushL(<span class="keyword">self</span>);
<a name="l00196"></a>00196 <span class="keyword">self</span>->ConstructL();
<a name="l00197"></a>00197 <span class="keywordflow">return</span> <span class="keyword">self</span>;
<a name="l00198"></a>00198 }
<a name="l00199"></a>00199
<a name="l00200"></a>00200 <a class="code" href="class_c_main_class.html">CMainClass</a>* CMainClass::NewLC(CStreamStore& aStore,TStreamId anId)
<a name="l00201"></a>00201 {
<a name="l00202"></a>00202 <a class="code" href="class_c_main_class.html">CMainClass</a>* <span class="keyword">self</span> = <span class="keyword">new</span> (ELeave) <a class="code" href="class_c_main_class.html">CMainClass</a>(aStore,anId);
<a name="l00203"></a>00203 CleanupStack::PushL(<span class="keyword">self</span>);
<a name="l00204"></a>00204 <span class="keyword">self</span>->RestoreL();
<a name="l00205"></a>00205 <span class="keywordflow">return</span> <span class="keyword">self</span>;
<a name="l00206"></a>00206 }
<a name="l00207"></a>00207
<a name="l00208"></a>00208 CMainClass::CMainClass(CStreamStore& aStore)
<a name="l00209"></a>00209 : iStore(aStore)
<a name="l00210"></a>00210 {}
<a name="l00211"></a>00211
<a name="l00212"></a>00212 CMainClass::CMainClass(CStreamStore& aStore,TStreamId anId)
<a name="l00213"></a>00213 : iStore(aStore), iId(anId)
<a name="l00214"></a>00214 {}
<a name="l00215"></a>00215
<a name="l00216"></a>00216 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTxtMainData,<span class="stringliteral">"Main data"</span>);
<a name="l00217"></a>00217 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTxtClassAData,<span class="stringliteral">"Data for the CClassA - AAAAA"</span>);
<a name="l00218"></a>00218 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTxtClassBData,<span class="stringliteral">"Data for the CClassB - BBBBB"</span>);
<a name="l00219"></a>00219 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTxtClassCData,<span class="stringliteral">"Data for the CClassC - CCCCC"</span>);
<a name="l00220"></a>00220
<a name="l00221"></a>00221 <span class="keywordtype">void</span> CMainClass::ConstructL()
<a name="l00222"></a>00222 {
<a name="l00223"></a>00223 iSomeData = KTxtMainData;
<a name="l00224"></a>00224 <span class="comment">// create the stream to contain the embedded store</span>
<a name="l00225"></a>00225 RStoreWriteStream childStream;
<a name="l00226"></a>00226 <span class="comment">// we need to keep track of this stream id</span>
<a name="l00227"></a>00227 iEmbeddedStoreId = childStream.CreateLC(iStore);
<a name="l00228"></a>00228 <span class="comment">// construct the embedded store</span>
<a name="l00229"></a>00229 CPersistentStore* embeddedStore = CEmbeddedStore::NewLC(childStream);
<a name="l00230"></a>00230 <span class="comment">// construct the CClassABC and its containees. Note that</span>
<a name="l00231"></a>00231 <span class="comment">// the store it uses is the embedded store.</span>
<a name="l00232"></a>00232 iAbc = CClassABC::NewL(*embeddedStore);
<a name="l00233"></a>00233 iAbc->ConstructAL(KTxtClassAData,-1,2);
<a name="l00234"></a>00234 iAbc->ConstructB(KTxtClassBData,-3,4,5.6);
<a name="l00235"></a>00235 iAbc->ConstructC(KTxtClassCData);
<a name="l00236"></a>00236 <span class="comment">// store the CClassABC and its containees in the</span>
<a name="l00237"></a>00237 <span class="comment">// embedded store ...</span>
<a name="l00238"></a>00238 TStreamId idForAbc = iAbc->StoreL();
<a name="l00239"></a>00239 <span class="comment">// ... and set this stream id as the root </span>
<a name="l00240"></a>00240 <span class="comment">// stream of the embedded store</span>
<a name="l00241"></a>00241 embeddedStore->SetRootL(idForAbc);
<a name="l00242"></a>00242 <span class="comment">// Commit changes to the embedded store</span>
<a name="l00243"></a>00243 embeddedStore->CommitL();
<a name="l00244"></a>00244 <span class="comment">// Commit changes to the stream containing the </span>
<a name="l00245"></a>00245 <span class="comment">// embedded store.</span>
<a name="l00246"></a>00246 childStream.CommitL();
<a name="l00247"></a>00247 <span class="comment">// Destroy the embedded store object</span>
<a name="l00248"></a>00248 <span class="comment">// Cleanup the stream containing the emmbedded store </span>
<a name="l00249"></a>00249 CleanupStack::PopAndDestroy(2);
<a name="l00250"></a>00250 }
<a name="l00251"></a>00251
<a name="l00252"></a>00252 CMainClass::~CMainClass()
<a name="l00253"></a>00253 {
<a name="l00254"></a>00254 <span class="keyword">delete</span> iEmbeddedStore;
<a name="l00255"></a>00255 iChildStream.Release(); <span class="comment">//stream cleanup</span>
<a name="l00256"></a>00256 <span class="keyword">delete</span> iAbc;
<a name="l00257"></a>00257 }
<a name="l00258"></a>00258
<a name="l00259"></a>00259 TStreamId CMainClass::StoreL()
<a name="l00260"></a>00260 {
<a name="l00261"></a>00261 RStoreWriteStream stream;
<a name="l00262"></a>00262 TStreamId <span class="keywordtype">id</span> = stream.CreateLC(iStore);
<a name="l00263"></a>00263 ExternalizeL(stream);
<a name="l00264"></a>00264 stream.CommitL();
<a name="l00265"></a>00265 CleanupStack::PopAndDestroy();
<a name="l00266"></a>00266 <span class="keywordflow">return</span> id;
<a name="l00267"></a>00267 }
<a name="l00268"></a>00268
<a name="l00269"></a>00269 <span class="keywordtype">void</span> CMainClass::ExternalizeL(RWriteStream& aStream)
<a name="l00270"></a>00270 {
<a name="l00271"></a>00271 aStream << iSomeData;
<a name="l00272"></a>00272 aStream << iEmbeddedStoreId;
<a name="l00273"></a>00273 }
<a name="l00274"></a>00274
<a name="l00275"></a>00275 <span class="keywordtype">void</span> CMainClass::RestoreL()
<a name="l00276"></a>00276 {
<a name="l00277"></a>00277 RStoreReadStream stream;
<a name="l00278"></a>00278 stream.OpenLC(iStore,iId);
<a name="l00279"></a>00279 <span class="comment">// restore the CMainClass object</span>
<a name="l00280"></a>00280 InternalizeL(stream);
<a name="l00281"></a>00281 <span class="comment">// clean up the stream</span>
<a name="l00282"></a>00282 CleanupStack::PopAndDestroy();
<a name="l00283"></a>00283 <span class="comment">// open stream containing the embedded store</span>
<a name="l00284"></a>00284 <span class="comment">// (and keep it open)</span>
<a name="l00285"></a>00285 <span class="keywordflow">if</span> (iEmbeddedStoreId != KNullStreamId)
<a name="l00286"></a>00286 {
<a name="l00287"></a>00287 iChildStream.OpenL(iStore,iEmbeddedStoreId);
<a name="l00288"></a>00288 <span class="comment">// construct the embedded store </span>
<a name="l00289"></a>00289 <span class="comment">// (and keep it open)</span>
<a name="l00290"></a>00290 iEmbeddedStore = CEmbeddedStore::FromL(iChildStream);
<a name="l00291"></a>00291 <span class="comment">// restore the CClassABC object network from the</span>
<a name="l00292"></a>00292 <span class="comment">// embedded store. Note that not all of CClassABC's</span>
<a name="l00293"></a>00293 <span class="comment">// containees are loaded in, hence the need to keep</span>
<a name="l00294"></a>00294 <span class="comment">// the embedded store open </span>
<a name="l00295"></a>00295 iAbc = CClassABC::NewL(*iEmbeddedStore,iEmbeddedStore->Root());
<a name="l00296"></a>00296 }
<a name="l00297"></a>00297 }
<a name="l00298"></a>00298
<a name="l00299"></a>00299 <span class="keywordtype">void</span> CMainClass::InternalizeL(RReadStream& aStream)
<a name="l00300"></a>00300 {
<a name="l00301"></a>00301 aStream >> iSomeData;
<a name="l00302"></a>00302 aStream >> iEmbeddedStoreId;
<a name="l00303"></a>00303 }
<a name="l00304"></a>00304
<a name="l00305"></a>00305 <a class="code" href="class_c_class_a_b_c.html">CClassABC</a>* CMainClass::PtrAbc()
<a name="l00306"></a>00306 {
<a name="l00307"></a>00307 <span class="keywordflow">return</span> iAbc;
<a name="l00308"></a>00308 }
<a name="l00309"></a>00309
<a name="l00310"></a>00310 <span class="keywordtype">void</span> CMainClass::RemoveAbcL()
<a name="l00311"></a>00311 {
<a name="l00312"></a>00312 <span class="comment">// Remove the CClassABC component from memory an</span>
<a name="l00313"></a>00313 <span class="comment">// from the store. </span>
<a name="l00314"></a>00314 <span class="comment">// To remove the CClassABC representation from the </span>
<a name="l00315"></a>00315 <span class="comment">// store, just delete the stream containing the</span>
<a name="l00316"></a>00316 <span class="comment">// embedded store which contains the representation of</span>
<a name="l00317"></a>00317 <span class="comment">// the CClassABC object network.</span>
<a name="l00318"></a>00318 <span class="keywordflow">if</span> (!iAbc)
<a name="l00319"></a>00319 <span class="keywordflow">return</span>;
<a name="l00320"></a>00320 <span class="keyword">delete</span> iAbc;
<a name="l00321"></a>00321 iAbc = NULL;
<a name="l00322"></a>00322 <span class="comment">// close the embedded store</span>
<a name="l00323"></a>00323 <span class="keyword">delete</span> iEmbeddedStore;
<a name="l00324"></a>00324 iEmbeddedStore = NULL;
<a name="l00325"></a>00325 <span class="comment">// cleanup the stream (this is in the top </span>
<a name="l00326"></a>00326 <span class="comment">// level store) containing the embedded store</span>
<a name="l00327"></a>00327 iChildStream.Release();
<a name="l00328"></a>00328 <span class="comment">// delete the stream from the top level store ...</span>
<a name="l00329"></a>00329 iStore.DeleteL(iEmbeddedStoreId);
<a name="l00330"></a>00330 <span class="comment">// ... and commit these changes to the top</span>
<a name="l00331"></a>00331 <span class="comment">// level store</span>
<a name="l00332"></a>00332 iStore.CommitL();
<a name="l00333"></a>00333 iEmbeddedStoreId = KNullStreamId;
<a name="l00334"></a>00334 }
<a name="l00335"></a>00335
<a name="l00336"></a>00336 <span class="comment">//***************************************************************</span>
<a name="l00337"></a>00337 <span class="comment">//</span>
<a name="l00338"></a>00338 <span class="comment">// CClassABC Implementation</span>
<a name="l00339"></a>00339 <span class="comment">//</span>
<a name="l00340"></a>00340 <span class="comment">//***************************************************************</span>
<a name="l00341"></a>00341 CClassABC::CClassABC(CStreamStore& aStore)
<a name="l00342"></a>00342 : iStore(aStore)
<a name="l00343"></a>00343 {}
<a name="l00344"></a>00344
<a name="l00345"></a>00345 CClassABC::CClassABC(CStreamStore& aStore,TStreamId anId)
<a name="l00346"></a>00346 : iStore(aStore), iId(anId)
<a name="l00347"></a>00347 {}
<a name="l00348"></a>00348
<a name="l00349"></a>00349 <a class="code" href="class_c_class_a_b_c.html">CClassABC</a>* CClassABC::NewLC(CStreamStore& aStore)
<a name="l00350"></a>00350 {
<a name="l00351"></a>00351 <a class="code" href="class_c_class_a_b_c.html">CClassABC</a>* <span class="keyword">self</span> = <span class="keyword">new</span> (ELeave) <a class="code" href="class_c_class_a_b_c.html">CClassABC</a>(aStore);
<a name="l00352"></a>00352 CleanupStack::PushL(<span class="keyword">self</span>);
<a name="l00353"></a>00353 <span class="keyword">self</span>->ConstructL();
<a name="l00354"></a>00354 <span class="keywordflow">return</span> <span class="keyword">self</span>;
<a name="l00355"></a>00355 }
<a name="l00356"></a>00356
<a name="l00357"></a>00357 <a class="code" href="class_c_class_a_b_c.html">CClassABC</a>* CClassABC::NewL(CStreamStore& aStore)
<a name="l00358"></a>00358 {
<a name="l00359"></a>00359 <a class="code" href="class_c_class_a_b_c.html">CClassABC</a>* <span class="keyword">self</span> = CClassABC::NewLC(aStore);
<a name="l00360"></a>00360 CleanupStack::Pop();
<a name="l00361"></a>00361 <span class="keywordflow">return</span> <span class="keyword">self</span>;
<a name="l00362"></a>00362 }
<a name="l00363"></a>00363
<a name="l00364"></a>00364 <a class="code" href="class_c_class_a_b_c.html">CClassABC</a>* CClassABC::NewLC(CStreamStore& aStore, TStreamId anId)
<a name="l00365"></a>00365 {
<a name="l00366"></a>00366 <a class="code" href="class_c_class_a_b_c.html">CClassABC</a>* <span class="keyword">self</span> = <span class="keyword">new</span> (ELeave) <a class="code" href="class_c_class_a_b_c.html">CClassABC</a>(aStore,anId);
<a name="l00367"></a>00367 CleanupStack::PushL(<span class="keyword">self</span>);
<a name="l00368"></a>00368 <span class="keyword">self</span>->RestoreL();
<a name="l00369"></a>00369 <span class="keywordflow">return</span> <span class="keyword">self</span>;
<a name="l00370"></a>00370 }
<a name="l00371"></a>00371
<a name="l00372"></a>00372 <a class="code" href="class_c_class_a_b_c.html">CClassABC</a>* CClassABC::NewL(CStreamStore& aStore, TStreamId anId)
<a name="l00373"></a>00373 {
<a name="l00374"></a>00374 <a class="code" href="class_c_class_a_b_c.html">CClassABC</a>* <span class="keyword">self</span> = CClassABC::NewLC(aStore,anId);
<a name="l00375"></a>00375 CleanupStack::Pop();
<a name="l00376"></a>00376 <span class="keywordflow">return</span> <span class="keyword">self</span>;
<a name="l00377"></a>00377 }
<a name="l00378"></a>00378
<a name="l00379"></a>00379 <span class="keywordtype">void</span> CClassABC::ConstructL()
<a name="l00380"></a>00380 {
<a name="l00381"></a>00381 iA = CClassA::NewL();
<a name="l00382"></a>00382 iB = CClassB::NewL();
<a name="l00383"></a>00383 iC = CClassC::NewL();
<a name="l00384"></a>00384 }
<a name="l00385"></a>00385
<a name="l00386"></a>00386 <span class="keywordtype">void</span> CClassABC::ConstructAL(<span class="keyword">const</span> TDesC& aData,TInt anInt,TUint aUint)
<a name="l00387"></a>00387 {
<a name="l00388"></a>00388 iA->iVarBuf = aData.AllocL();
<a name="l00389"></a>00389 iA->iIntValue = anInt;
<a name="l00390"></a>00390 iA->iUintValue = aUint;
<a name="l00391"></a>00391 }
<a name="l00392"></a>00392
<a name="l00393"></a>00393 <span class="keywordtype">void</span> CClassABC::ConstructB(<span class="keyword">const</span> TDesC& aData,TInt anInt,TUint aUint,TReal aReal)
<a name="l00394"></a>00394 {
<a name="l00395"></a>00395 iB->iFixBuf = aData;
<a name="l00396"></a>00396 iB->iIntValue = anInt;
<a name="l00397"></a>00397 iB->iUintValue = aUint;
<a name="l00398"></a>00398 iB->iRealValue = aReal;
<a name="l00399"></a>00399 }
<a name="l00400"></a>00400
<a name="l00401"></a>00401 <span class="keywordtype">void</span> CClassABC::ConstructC(<span class="keyword">const</span> TDesC& aData)
<a name="l00402"></a>00402 {
<a name="l00403"></a>00403 iC->iFixBuf = aData;
<a name="l00404"></a>00404 }
<a name="l00405"></a>00405
<a name="l00406"></a>00406
<a name="l00407"></a>00407 <span class="comment">// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * </span>
<a name="l00408"></a>00408 <span class="comment">// Destructor deletes the CClassB object only if it is in memory.</span>
<a name="l00409"></a>00409 <span class="comment">// The IsPtr() function can be used to determine whether the </span>
<a name="l00410"></a>00410 <span class="comment">// CClassB object is memory. </span>
<a name="l00411"></a>00411 <span class="comment">// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * </span>
<a name="l00412"></a>00412 CClassABC::~CClassABC()
<a name="l00413"></a>00413 {
<a name="l00414"></a>00414 <span class="keyword">delete</span> iA;
<a name="l00415"></a>00415 <span class="keyword">delete</span> iC;
<a name="l00416"></a>00416 <span class="keywordflow">if</span> (iB.IsPtr())
<a name="l00417"></a>00417 <span class="keyword">delete</span> iB.AsPtr(); <span class="comment">// can also "delete iB;" makes implicit call to "operator T*()"</span>
<a name="l00418"></a>00418 }
<a name="l00419"></a>00419
<a name="l00420"></a>00420
<a name="l00421"></a>00421 <span class="comment">// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * </span>
<a name="l00422"></a>00422 <span class="comment">// Stores the CClassB object in its own stream and</span>
<a name="l00423"></a>00423 <span class="comment">// then stores:</span>
<a name="l00424"></a>00424 <span class="comment">// the CClassA object,</span>
<a name="l00425"></a>00425 <span class="comment">// the streamid of the CClassB object,</span>
<a name="l00426"></a>00426 <span class="comment">// the CClassC object</span>
<a name="l00427"></a>00427 <span class="comment">// in a separate stream.</span>
<a name="l00428"></a>00428 <span class="comment">// Returns the streamid of this last stream</span>
<a name="l00429"></a>00429 <span class="comment">// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * </span>
<a name="l00430"></a>00430 TStreamId CClassABC::StoreL()
<a name="l00431"></a>00431 {
<a name="l00432"></a>00432 <span class="comment">// Construct the output stream which is intended</span>
<a name="l00433"></a>00433 <span class="comment">// to hold the CClassB object only.</span>
<a name="l00434"></a>00434 RStoreWriteStream outstream;
<a name="l00435"></a>00435 TStreamId idForB = outstream.CreateLC(iStore);
<a name="l00436"></a>00436 <span class="comment">// Stream out the CClassB object.</span>
<a name="l00437"></a>00437 <span class="comment">// Note that the right hand side returns a reference</span>
<a name="l00438"></a>00438 <span class="comment">// to CClassB</span>
<a name="l00439"></a>00439 outstream << *iB;
<a name="l00440"></a>00440 <span class="comment">// Commit changes to the stream</span>
<a name="l00441"></a>00441 outstream.CommitL();
<a name="l00442"></a>00442 <span class="comment">// Cleanup the stream object</span>
<a name="l00443"></a>00443 CleanupStack::PopAndDestroy();
<a name="l00444"></a>00444 <span class="comment">// Now construct the output stream which is intended</span>
<a name="l00445"></a>00445 <span class="comment">// to hold:</span>
<a name="l00446"></a>00446 <span class="comment">// the CClassA object,</span>
<a name="l00447"></a>00447 <span class="comment">// the streamid of the CClassB object,</span>
<a name="l00448"></a>00448 <span class="comment">// the CClassC object</span>
<a name="l00449"></a>00449 TStreamId <span class="keywordtype">id</span> = outstream.CreateLC(iStore);
<a name="l00450"></a>00450 <span class="comment">// Write out the CClassA object.</span>
<a name="l00451"></a>00451 outstream << *iA;
<a name="l00452"></a>00452 <span class="comment">// Write out the stream id of the CClassB object</span>
<a name="l00453"></a>00453 outstream << idForB;
<a name="l00454"></a>00454 <span class="comment">// Write out the CClassC object.</span>
<a name="l00455"></a>00455 outstream << *iC;
<a name="l00456"></a>00456 <span class="comment">// Commit changes to the stream</span>
<a name="l00457"></a>00457 outstream.CommitL();
<a name="l00458"></a>00458 <span class="comment">// Cleanup the stream object,</span>
<a name="l00459"></a>00459 CleanupStack::PopAndDestroy();
<a name="l00460"></a>00460 <span class="comment">// Return this stream id</span>
<a name="l00461"></a>00461 <span class="keywordflow">return</span> id;
<a name="l00462"></a>00462 }
<a name="l00463"></a>00463
<a name="l00464"></a>00464
<a name="l00465"></a>00465 <span class="keyword">const</span> <a class="code" href="class_c_class_a.html">CClassA</a>* CClassABC::PtrA()
<a name="l00466"></a>00466 {
<a name="l00467"></a>00467 <span class="keywordflow">return</span> iA; <span class="comment">// Return a pointer to the contained CClassA object</span>
<a name="l00468"></a>00468 }
<a name="l00469"></a>00469
<a name="l00470"></a>00470
<a name="l00471"></a>00471 <span class="keyword">const</span> CClassB* CClassABC::PtrBL()
<a name="l00472"></a>00472 {
<a name="l00473"></a>00473 <span class="keywordflow">if</span> (iB.IsId()) <span class="comment">// If the contained CClassB object is not in memory, it must</span>
<a name="l00474"></a>00474 RestoreBL(); <span class="comment">// be loaded in before a pointer can be returned to the caller</span>
<a name="l00475"></a>00475 <span class="keywordflow">return</span> iB.AsPtr();
<a name="l00476"></a>00476 }
<a name="l00477"></a>00477
<a name="l00478"></a>00478
<a name="l00479"></a>00479 <span class="keyword">const</span> CClassC* CClassABC::PtrC()
<a name="l00480"></a>00480 {
<a name="l00481"></a>00481 <span class="keywordflow">return</span> iC; <span class="comment">//Returns a pointer to the contained CClassC object</span>
<a name="l00482"></a>00482 }
<a name="l00483"></a>00483
<a name="l00484"></a>00484 <span class="comment">// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * </span>
<a name="l00485"></a>00485 <span class="comment">// Restores the CClassA and CClassC objects and the streamid for the</span>
<a name="l00486"></a>00486 <span class="comment">// CClassB object.</span>
<a name="l00487"></a>00487 <span class="comment">// The swizzle for the CClassB object is constructed from the</span>
<a name="l00488"></a>00488 <span class="comment">// streamid but the CClassB object itself is NOT restored at </span>
<a name="l00489"></a>00489 <span class="comment">// this time.</span>
<a name="l00490"></a>00490 <span class="comment">// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * </span>
<a name="l00491"></a>00491 <span class="keywordtype">void</span> CClassABC::RestoreL()
<a name="l00492"></a>00492 {
<a name="l00493"></a>00493 <span class="comment">// Construct the input stream.</span>
<a name="l00494"></a>00494 RStoreReadStream instream;
<a name="l00495"></a>00495 instream.OpenLC(iStore,iId);
<a name="l00496"></a>00496 <span class="comment">// Construct a CClassA object and restore from the stream</span>
<a name="l00497"></a>00497 iA = CClassA::NewL();
<a name="l00498"></a>00498 instream >> *iA;
<a name="l00499"></a>00499 <span class="comment">// Construct the swizzle for the CClassB object. This</span>
<a name="l00500"></a>00500 <span class="comment">// stream contains the id of the stream which </span>
<a name="l00501"></a>00501 <span class="comment">// actually contains the full CClassB object. The loading of</span>
<a name="l00502"></a>00502 <span class="comment">// the CClassB object into memory is deferred until later.</span>
<a name="l00503"></a>00503 <span class="comment">// The resulting swizzle represents the CClassB object as </span>
<a name="l00504"></a>00504 <span class="comment">// a streamid </span>
<a name="l00505"></a>00505 instream >> iB;
<a name="l00506"></a>00506 <span class="comment">// Construct a CClassC object and restrore from the stream</span>
<a name="l00507"></a>00507 iC = CClassC::NewL();
<a name="l00508"></a>00508 instream >> *iC;
<a name="l00509"></a>00509 <span class="comment">// Cleanup the stream object</span>
<a name="l00510"></a>00510 CleanupStack::PopAndDestroy();
<a name="l00511"></a>00511 }
<a name="l00512"></a>00512
<a name="l00513"></a>00513
<a name="l00514"></a>00514 <span class="comment">// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * </span>
<a name="l00515"></a>00515 <span class="comment">// Loads the CClassB object into memory and changes the swizzle's</span>
<a name="l00516"></a>00516 <span class="comment">// representation from "streamid" to "pointer".</span>
<a name="l00517"></a>00517 <span class="comment">// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * </span>
<a name="l00518"></a>00518 <span class="keywordtype">void</span> CClassABC::RestoreBL()
<a name="l00519"></a>00519 {
<a name="l00520"></a>00520 <span class="comment">// Construct the input stream. Assumes we have the correct store (this</span>
<a name="l00521"></a>00521 <span class="comment">// emphasizes the need to ensure that the store remain open)</span>
<a name="l00522"></a>00522 RStoreReadStream instream;
<a name="l00523"></a>00523 instream.OpenLC(iStore,iB.AsId());
<a name="l00524"></a>00524 <span class="comment">// Construct a CClassB object and restore from the stream. The </span>
<a name="l00525"></a>00525 <span class="comment">// assignment: CClassB* to TSwizzle<CClassB> changes the</span>
<a name="l00526"></a>00526 <span class="comment">// swizzle's representation of the CClassB object </span>
<a name="l00527"></a>00527 <span class="comment">// from "streamid" to "pointer"</span>
<a name="l00528"></a>00528 CClassB* ptrB = CClassB::NewLC();
<a name="l00529"></a>00529 instream >> *ptrB;
<a name="l00530"></a>00530 CleanupStack::Pop();
<a name="l00531"></a>00531 iB = ptrB;
<a name="l00532"></a>00532 <span class="comment">// Cleanup the stream object </span>
<a name="l00533"></a>00533 CleanupStack::PopAndDestroy();
<a name="l00534"></a>00534 }
<a name="l00535"></a>00535
<a name="l00536"></a>00536 <span class="comment">//***************************************************************</span>
<a name="l00537"></a>00537 <span class="comment">//</span>
<a name="l00538"></a>00538 <span class="comment">// CClassA Implementation</span>
<a name="l00539"></a>00539 <span class="comment">//</span>
<a name="l00540"></a>00540 <span class="comment">//***************************************************************</span>
<a name="l00541"></a>00541 <a class="code" href="class_c_class_a.html">CClassA</a>* CClassA::NewL()
<a name="l00542"></a>00542 {
<a name="l00543"></a>00543 <a class="code" href="class_c_class_a.html">CClassA</a>* <span class="keyword">self</span> = CClassA::NewLC();
<a name="l00544"></a>00544 CleanupStack::Pop();
<a name="l00545"></a>00545 <span class="keywordflow">return</span> <span class="keyword">self</span>;
<a name="l00546"></a>00546 }
<a name="l00547"></a>00547
<a name="l00548"></a>00548 <a class="code" href="class_c_class_a.html">CClassA</a>* CClassA::NewLC()
<a name="l00549"></a>00549 {
<a name="l00550"></a>00550 <a class="code" href="class_c_class_a.html">CClassA</a>* <span class="keyword">self</span> = <span class="keyword">new</span> (ELeave) <a class="code" href="class_c_class_a.html">CClassA</a>;
<a name="l00551"></a>00551 CleanupStack::PushL(<span class="keyword">self</span>);
<a name="l00552"></a>00552 <span class="keywordflow">return</span> <span class="keyword">self</span>;
<a name="l00553"></a>00553 }
<a name="l00554"></a>00554
<a name="l00555"></a>00555 CClassA::~CClassA()
<a name="l00556"></a>00556 {
<a name="l00557"></a>00557 <span class="keyword">delete</span> iVarBuf;
<a name="l00558"></a>00558 }
<a name="l00559"></a>00559
<a name="l00560"></a>00560 <span class="keywordtype">void</span> CClassA::ExternalizeL(RWriteStream& aStream)<span class="keyword"> const</span>
<a name="l00561"></a>00561 <span class="keyword"> </span>{
<a name="l00562"></a>00562 aStream.WriteInt32L(iVarBuf->Des().MaxLength());
<a name="l00563"></a>00563 aStream << *iVarBuf;
<a name="l00564"></a>00564 aStream.WriteInt32L(iIntValue);
<a name="l00565"></a>00565 aStream.WriteUint32L(iUintValue);
<a name="l00566"></a>00566 }
<a name="l00567"></a>00567
<a name="l00568"></a>00568 <span class="keywordtype">void</span> CClassA::InternalizeL(RReadStream& aStream)
<a name="l00569"></a>00569 {
<a name="l00570"></a>00570 TInt maxlen;
<a name="l00571"></a>00571 maxlen = aStream.ReadInt32L();
<a name="l00572"></a>00572 iVarBuf = HBufC::NewL(aStream,maxlen);
<a name="l00573"></a>00573 iIntValue = aStream.ReadInt32L();
<a name="l00574"></a>00574 iUintValue = aStream.ReadUint32L();
<a name="l00575"></a>00575 }
<a name="l00576"></a>00576
<a name="l00577"></a>00577
<a name="l00578"></a>00578 <span class="comment">//***************************************************************</span>
<a name="l00579"></a>00579 <span class="comment">//</span>
<a name="l00580"></a>00580 <span class="comment">// CClassB Implementation</span>
<a name="l00581"></a>00581 <span class="comment">//</span>
<a name="l00582"></a>00582 <span class="comment">//***************************************************************</span>
<a name="l00583"></a>00583 CClassB* CClassB::NewLC()
<a name="l00584"></a>00584 {
<a name="l00585"></a>00585 CClassB* <span class="keyword">self</span> = <span class="keyword">new</span> (ELeave) CClassB;
<a name="l00586"></a>00586 CleanupStack::PushL(<span class="keyword">self</span>);
<a name="l00587"></a>00587 <span class="keywordflow">return</span> <span class="keyword">self</span>;
<a name="l00588"></a>00588 }
<a name="l00589"></a>00589
<a name="l00590"></a>00590 CClassB* CClassB::NewL()
<a name="l00591"></a>00591 {
<a name="l00592"></a>00592 CClassB* <span class="keyword">self</span> = <a class="code" href="class_c_sql_example.html#a8b115210a3fbfa19de5c7f6a0abf3e43">CClassB::NewLC</a>();
<a name="l00593"></a>00593 CleanupStack::Pop();
<a name="l00594"></a>00594 <span class="keywordflow">return</span> <span class="keyword">self</span>;
<a name="l00595"></a>00595 }
<a name="l00596"></a>00596
<a name="l00597"></a>00597 <span class="keywordtype">void</span> CClassB::ExternalizeL(RWriteStream& aStream)<span class="keyword"> const</span>
<a name="l00598"></a>00598 <span class="keyword"> </span>{
<a name="l00599"></a>00599 aStream << iFixBuf;
<a name="l00600"></a>00600 aStream.WriteInt32L(iIntValue);
<a name="l00601"></a>00601 aStream.WriteUint32L(iUintValue);
<a name="l00602"></a>00602 aStream.WriteReal64L(iRealValue);
<a name="l00603"></a>00603 }
<a name="l00604"></a>00604
<a name="l00605"></a>00605 <span class="keywordtype">void</span> CClassB::InternalizeL(RReadStream& aStream)
<a name="l00606"></a>00606 {
<a name="l00607"></a>00607 aStream >> iFixBuf;
<a name="l00608"></a>00608 iIntValue = aStream.ReadInt32L();
<a name="l00609"></a>00609 iUintValue = aStream.ReadUint32L();
<a name="l00610"></a>00610 iRealValue = aStream.ReadReal64L();
<a name="l00611"></a>00611 }
<a name="l00612"></a>00612
<a name="l00613"></a>00613 <span class="comment">//***************************************************************</span>
<a name="l00614"></a>00614 <span class="comment">//</span>
<a name="l00615"></a>00615 <span class="comment">// CClassC Implementation</span>
<a name="l00616"></a>00616 <span class="comment">//</span>
<a name="l00617"></a>00617 <span class="comment">//***************************************************************</span>
<a name="l00618"></a>00618 CClassC* CClassC::NewL()
<a name="l00619"></a>00619 {
<a name="l00620"></a>00620 CClassC* <span class="keyword">self</span> = <a class="code" href="class_c_sql_example.html#a8b115210a3fbfa19de5c7f6a0abf3e43">CClassC::NewLC</a>();
<a name="l00621"></a>00621 CleanupStack::Pop();
<a name="l00622"></a>00622 <span class="keywordflow">return</span> <span class="keyword">self</span>;
<a name="l00623"></a>00623 }
<a name="l00624"></a>00624
<a name="l00625"></a>00625 CClassC* CClassC::NewLC()
<a name="l00626"></a>00626 {
<a name="l00627"></a>00627 CClassC* <span class="keyword">self</span> = <span class="keyword">new</span> (ELeave) CClassC;
<a name="l00628"></a>00628 CleanupStack::PushL(<span class="keyword">self</span>);
<a name="l00629"></a>00629 <span class="keywordflow">return</span> <span class="keyword">self</span>;
<a name="l00630"></a>00630 }
<a name="l00631"></a>00631
<a name="l00632"></a>00632 <span class="keywordtype">void</span> CClassC::ExternalizeL(RWriteStream& aStream)<span class="keyword"> const</span>
<a name="l00633"></a>00633 <span class="keyword"> </span>{
<a name="l00634"></a>00634 aStream << iFixBuf;
<a name="l00635"></a>00635 }
<a name="l00636"></a>00636
<a name="l00637"></a>00637 <span class="keywordtype">void</span> CClassC::InternalizeL(RReadStream& aStream)
<a name="l00638"></a>00638 {
<a name="l00639"></a>00639 aStream >> iFixBuf;
<a name="l00640"></a>00640 }
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