Symbian3/SDK/Source/GUID-231840A2-255B-5200-8AD1-1D7667FCB448.dita
changeset 8 ae94777fff8f
parent 7 51a74ef9ed63
child 13 48780e181b38
--- a/Symbian3/SDK/Source/GUID-231840A2-255B-5200-8AD1-1D7667FCB448.dita	Wed Mar 31 11:11:55 2010 +0100
+++ b/Symbian3/SDK/Source/GUID-231840A2-255B-5200-8AD1-1D7667FCB448.dita	Fri Jun 11 12:39:03 2010 +0100
@@ -1,81 +1,81 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!-- Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies) All rights reserved. -->
-<!-- This component and the accompanying materials are made available under the terms of the License 
-"Eclipse Public License v1.0" which accompanies this distribution, 
-and is available at the URL "http://www.eclipse.org/legal/epl-v10.html". -->
-<!-- Initial Contributors:
-    Nokia Corporation - initial contribution.
-Contributors: 
--->
-<!DOCTYPE concept
-  PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">
-<concept id="GUID-231840A2-255B-5200-8AD1-1D7667FCB448" xml:lang="en"><title>What
-are records</title><shortdesc>This topic describes the structure of record. A record is an item
-that can be stored in the Comms Database. </shortdesc><prolog><metadata><keywords/></metadata></prolog><conbody>
-<p>A record is a container and an element. A record refers to a set of fields
-in a defined order. A set or records that has the same fields in the same
-order can be called a recordset or a table. Fields in a given position make
-a column. A column is conceptual. The CommsDat API has no C++ item defined
-as a column. </p>
-<p>There are two types of record: </p>
-<ul>
-<li id="GUID-5989B5E3-1995-5E12-8BB6-30136BA7DA09"><p>records defined at system
-compile time - these records have named fields and are defined by Symbian
-platform. </p> </li>
-<li id="GUID-E5B40BE7-13D4-5EE1-B005-1D00EAB0A7BC"><p>records defined by the
-user - these records are defined at run time - they are not known to Symbian
-platform when Symbian platform is built. </p> </li>
-</ul>
-<section id="GUID-6AB91FBD-F293-4563-964C-1A6C7F1459DB"><title>Records defined at system compile time</title> <p> </p> <p>The
-class <xref href="GUID-1CDD0B97-8B00-3373-9908-512C9BC1CF51.dita"><apiname>CCDRecordBase</apiname></xref> represents a Symbian
-platform defined record. All Symbian platform defined records inherit from <codeph>CCDRecordBase</codeph>.
-An individual named record is an instance of a class derived from <codeph>CCDRecordBase</codeph>.
-Symbian platform creates an individual named record and assigns a unique numeric
-Id. Symbian platform defines the class and the unique Id before the system
-is built. </p> <p>The class defines a schema for the record. A schema is a
-pattern for the record that all records of this type follow. The class contains
-a set of fields and links to other records. </p> <fig id="GUID-A331560C-9996-55E8-8C64-7BB2D5D0C1C6">
-<image href="GUID-DB9F413A-35E2-577E-91C3-1D519835FAB4_d0e86307_href.png" placement="inline"/>
-</fig> <p>For example, Symbian platform defines the class <xref href="GUID-1CDD0B97-8B00-3373-9908-512C9BC1CF51.dita"><apiname>CCDIAPRecord</apiname></xref>.
-The class represents an Internet Access Point (IAP) record. A set of IAP records
-form an IAP table. Symbian platform assigns the unique numeric Id <xref href="GUID-1CDD0B97-8B00-3373-9908-512C9BC1CF51.dita"><apiname>KCDTIdIAPRecord</apiname></xref> to a record of this type. </p> <p>The
-public data members of this class are the fields and links that make the record.
-The following code shows part of the class definition. Some parts are omitted
-- this is not the complete class definition. </p> <codeblock id="GUID-3F6A91C8-BF0E-50E9-B49B-C363816179E5" xml:space="preserve">class CCDIAPRecord : public CCDRecordBase
-    {
-    public:
-        CMDBField&lt;TDesC&gt;                        iServiceType;
-        CMDBRecordLink&lt;CCDServiceRecordBase&gt;    iService;
-        CMDBField&lt;TDesC&gt;                        iBearerType;
-        CMDBRecordLink&lt;CCDBearerRecordBase&gt;     iBearer;
-        CMDBRecordLink&lt;CCDNetworkRecord&gt;        iNetwork;
-        CMDBField&lt;TUint32&gt;                      iNetworkWeighting;
-        CMDBRecordLink&lt;CCDLocationRecord&gt;       iLocation;
-        ...
-    }
- </codeblock> <p>To create an instance of a Symbian platform defined record
-in memory, use the factory function: <xref href="GUID-1CDD0B97-8B00-3373-9908-512C9BC1CF51.dita"><apiname>CommsDat::CCDRecordBase::RecordFactoryL()</apiname></xref>. </p> <p>Tools
-and applications can also create an instance of a Symbian platform defined
-record in memory, and copy it from another record. Use the factory function: <xref href="GUID-1CDD0B97-8B00-3373-9908-512C9BC1CF51.dita"><apiname>CommsDat::CCDRecordBase::CreateCopyRecord()</apiname></xref>. </p> <p>Fields
-are public data members of a Symbian platform defined record. Tools and applications
-access the fields directly. </p> <p>Tools and applications can use the <xref href="GUID-1CDD0B97-8B00-3373-9908-512C9BC1CF51.dita"><apiname>CommsDat::CCDRecordBase::GetFieldByNameL()</apiname></xref> or <xref href="GUID-1CDD0B97-8B00-3373-9908-512C9BC1CF51.dita"><apiname>CommsDat::CCDRecordBase::GetFieldByIdL()</apiname></xref> functions
-to find fields in a Symbian platform defined record. These methods are <i>not</i> recommended.
-It is more efficient to access the fields directly. </p> </section>
-<section id="GUID-33F78080-476A-462D-B2A3-788C21DCF4D2"><title>Records defined by the user</title> <p>The class <xref href="GUID-1CDD0B97-8B00-3373-9908-512C9BC1CF51.dita"><apiname>CMDBGenericRecord</apiname></xref> represents a user defined record.
-All user defined records inherit from <codeph>CMDBGenericRecord</codeph>.
-User defined records do not have named fields. A tool or application supplies
-a schema at run time. The schema defines the structure of the record. </p> <p>A
-schema is an array of <xref href="GUID-1CDD0B97-8B00-3373-9908-512C9BC1CF51.dita"><apiname>SGenericRecordTypeInfo</apiname></xref> objects.
-Each item in the array defines the fields in the record in order. </p> <p>Tools
-and applications can use the <xref href="GUID-1CDD0B97-8B00-3373-9908-512C9BC1CF51.dita"><apiname>CommsDat::CMDBGenericRecord::InitializeL()</apiname></xref> function
-to initialise a record in memory. Tools and Applications can also get use
-the <codeph>LoadL()</codeph> and <codeph>FindL()</codeph> functions to get
-the the table schema from the Comms Database. </p> <fig id="GUID-BCE5A2B5-C328-594A-A213-C4AFB48BBF68">
-<image href="GUID-78AAEDF8-6C31-53E3-B411-3463DDAAC902_d0e86395_href.png" placement="inline"/>
-</fig> <p> </p> <p>You use the same methods to create, store and access user
-defined records that Symbian platform defined records use. Symbian platform
-backs up user defined data and secures user defined data with Platform Security.
-Symbian platform does not maintain user defined data formats. </p> <p>Tools
-and applications must use the <xref href="GUID-1CDD0B97-8B00-3373-9908-512C9BC1CF51.dita"><apiname>CommsDat::CCDRecordBase::GetFieldByNameL()</apiname></xref> or <xref href="GUID-1CDD0B97-8B00-3373-9908-512C9BC1CF51.dita"><apiname>CommsDat::CCDRecordBase::GetFieldByIdL()</apiname></xref> functions
-to find fields in a user defined record. It is more efficient to use <xref href="GUID-1CDD0B97-8B00-3373-9908-512C9BC1CF51.dita"><apiname>CommsDat::CCDRecordBase::GetFieldByIdL()</apiname></xref>. </p> </section>
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies) All rights reserved. -->
+<!-- This component and the accompanying materials are made available under the terms of the License 
+"Eclipse Public License v1.0" which accompanies this distribution, 
+and is available at the URL "http://www.eclipse.org/legal/epl-v10.html". -->
+<!-- Initial Contributors:
+    Nokia Corporation - initial contribution.
+Contributors: 
+-->
+<!DOCTYPE concept
+  PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">
+<concept id="GUID-231840A2-255B-5200-8AD1-1D7667FCB448" xml:lang="en"><title>What
+are records</title><shortdesc>This topic describes the structure of record. A record is an item
+that can be stored in the Comms Database. </shortdesc><prolog><metadata><keywords/></metadata></prolog><conbody>
+<p>A record is a container and an element. A record refers to a set of fields
+in a defined order. A set or records that has the same fields in the same
+order can be called a recordset or a table. Fields in a given position make
+a column. A column is conceptual. The CommsDat API has no C++ item defined
+as a column. </p>
+<p>There are two types of record: </p>
+<ul>
+<li id="GUID-5989B5E3-1995-5E12-8BB6-30136BA7DA09"><p>records defined at system
+compile time - these records have named fields and are defined by Symbian
+platform. </p> </li>
+<li id="GUID-E5B40BE7-13D4-5EE1-B005-1D00EAB0A7BC"><p>records defined by the
+user - these records are defined at run time - they are not known to Symbian
+platform when Symbian platform is built. </p> </li>
+</ul>
+<section id="GUID-6AB91FBD-F293-4563-964C-1A6C7F1459DB"><title>Records defined at system compile time</title> <p> </p> <p>The
+class <xref href="GUID-1CDD0B97-8B00-3373-9908-512C9BC1CF51.dita"><apiname>CCDRecordBase</apiname></xref> represents a Symbian
+platform defined record. All Symbian platform defined records inherit from <codeph>CCDRecordBase</codeph>.
+An individual named record is an instance of a class derived from <codeph>CCDRecordBase</codeph>.
+Symbian platform creates an individual named record and assigns a unique numeric
+Id. Symbian platform defines the class and the unique Id before the system
+is built. </p> <p>The class defines a schema for the record. A schema is a
+pattern for the record that all records of this type follow. The class contains
+a set of fields and links to other records. </p> <fig id="GUID-A331560C-9996-55E8-8C64-7BB2D5D0C1C6">
+<image href="GUID-DB9F413A-35E2-577E-91C3-1D519835FAB4_d0e79595_href.png" placement="inline"/>
+</fig> <p>For example, Symbian platform defines the class <xref href="GUID-1CDD0B97-8B00-3373-9908-512C9BC1CF51.dita"><apiname>CCDIAPRecord</apiname></xref>.
+The class represents an Internet Access Point (IAP) record. A set of IAP records
+form an IAP table. Symbian platform assigns the unique numeric Id <xref href="GUID-1CDD0B97-8B00-3373-9908-512C9BC1CF51.dita"><apiname>KCDTIdIAPRecord</apiname></xref> to a record of this type. </p> <p>The
+public data members of this class are the fields and links that make the record.
+The following code shows part of the class definition. Some parts are omitted
+- this is not the complete class definition. </p> <codeblock id="GUID-3F6A91C8-BF0E-50E9-B49B-C363816179E5" xml:space="preserve">class CCDIAPRecord : public CCDRecordBase
+    {
+    public:
+        CMDBField&lt;TDesC&gt;                        iServiceType;
+        CMDBRecordLink&lt;CCDServiceRecordBase&gt;    iService;
+        CMDBField&lt;TDesC&gt;                        iBearerType;
+        CMDBRecordLink&lt;CCDBearerRecordBase&gt;     iBearer;
+        CMDBRecordLink&lt;CCDNetworkRecord&gt;        iNetwork;
+        CMDBField&lt;TUint32&gt;                      iNetworkWeighting;
+        CMDBRecordLink&lt;CCDLocationRecord&gt;       iLocation;
+        ...
+    }
+ </codeblock> <p>To create an instance of a Symbian platform defined record
+in memory, use the factory function: <xref href="GUID-1CDD0B97-8B00-3373-9908-512C9BC1CF51.dita"><apiname>CommsDat::CCDRecordBase::RecordFactoryL()</apiname></xref>. </p> <p>Tools
+and applications can also create an instance of a Symbian platform defined
+record in memory, and copy it from another record. Use the factory function: <xref href="GUID-1CDD0B97-8B00-3373-9908-512C9BC1CF51.dita"><apiname>CommsDat::CCDRecordBase::CreateCopyRecord()</apiname></xref>. </p> <p>Fields
+are public data members of a Symbian platform defined record. Tools and applications
+access the fields directly. </p> <p>Tools and applications can use the <xref href="GUID-1CDD0B97-8B00-3373-9908-512C9BC1CF51.dita"><apiname>CommsDat::CCDRecordBase::GetFieldByNameL()</apiname></xref> or <xref href="GUID-1CDD0B97-8B00-3373-9908-512C9BC1CF51.dita"><apiname>CommsDat::CCDRecordBase::GetFieldByIdL()</apiname></xref> functions
+to find fields in a Symbian platform defined record. These methods are <i>not</i> recommended.
+It is more efficient to access the fields directly. </p> </section>
+<section id="GUID-33F78080-476A-462D-B2A3-788C21DCF4D2"><title>Records defined by the user</title> <p>The class <xref href="GUID-1CDD0B97-8B00-3373-9908-512C9BC1CF51.dita"><apiname>CMDBGenericRecord</apiname></xref> represents a user defined record.
+All user defined records inherit from <codeph>CMDBGenericRecord</codeph>.
+User defined records do not have named fields. A tool or application supplies
+a schema at run time. The schema defines the structure of the record. </p> <p>A
+schema is an array of <xref href="GUID-1CDD0B97-8B00-3373-9908-512C9BC1CF51.dita"><apiname>SGenericRecordTypeInfo</apiname></xref> objects.
+Each item in the array defines the fields in the record in order. </p> <p>Tools
+and applications can use the <xref href="GUID-1CDD0B97-8B00-3373-9908-512C9BC1CF51.dita"><apiname>CommsDat::CMDBGenericRecord::InitializeL()</apiname></xref> function
+to initialise a record in memory. Tools and Applications can also get use
+the <codeph>LoadL()</codeph> and <codeph>FindL()</codeph> functions to get
+the the table schema from the Comms Database. </p> <fig id="GUID-BCE5A2B5-C328-594A-A213-C4AFB48BBF68">
+<image href="GUID-78AAEDF8-6C31-53E3-B411-3463DDAAC902_d0e79683_href.png" placement="inline"/>
+</fig> <p> </p> <p>You use the same methods to create, store and access user
+defined records that Symbian platform defined records use. Symbian platform
+backs up user defined data and secures user defined data with Platform Security.
+Symbian platform does not maintain user defined data formats. </p> <p>Tools
+and applications must use the <xref href="GUID-1CDD0B97-8B00-3373-9908-512C9BC1CF51.dita"><apiname>CommsDat::CCDRecordBase::GetFieldByNameL()</apiname></xref> or <xref href="GUID-1CDD0B97-8B00-3373-9908-512C9BC1CF51.dita"><apiname>CommsDat::CCDRecordBase::GetFieldByIdL()</apiname></xref> functions
+to find fields in a user defined record. It is more efficient to use <xref href="GUID-1CDD0B97-8B00-3373-9908-512C9BC1CF51.dita"><apiname>CommsDat::CCDRecordBase::GetFieldByIdL()</apiname></xref>. </p> </section>
 </conbody></concept>
\ No newline at end of file