qtmobility/src/contacts/qcontactfetchhint.cpp
changeset 4 90517678cc4f
child 5 453da2cfceef
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/qtmobility/src/contacts/qcontactfetchhint.cpp	Mon May 03 13:18:40 2010 +0300
@@ -0,0 +1,198 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the Qt Mobility Components.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qcontactfetchhint.h"
+#include "qcontactfetchhint_p.h"
+
+#include <QStringList>
+
+QTM_BEGIN_NAMESPACE
+
+/*!
+  \class QContactFetchHint
+  \brief The QContactFetchHint class provides hints to the manager about which contact
+  information needs to be retrieved in an asynchronous fetch request or a synchronous
+  function call.
+
+  All of the hints may be ignored at the discretion of the manager, however if a manager
+  is able to optimize retrieval of contacts due to hints, it may do so.  If a manager
+  ignores a hint, it must retrieve the full set of data that the hint refers to.
+
+  The fetch hint contains:
+  \list
+   \o a list of detail definition names which the client is interested
+  in (empty if interested in all detail definitions)
+   \o a list of relationship types which the client is interested in
+  (empty if interested in all relationships)
+   \o some optimization flags which allow the client to tell the backend if they are
+  not interested in any relationships, any action preferences, or any binary blobs (images etc).
+  \endlist
+
+  Important note: a client should not make changes to a contact which has been retrieved
+  using a fetch hint other than the default fetch hint.  Doing so will result in information
+  loss when saving the contact back to the manager (as the "new" restricted contact will
+  replace the previously saved contact in the backend).
+ */
+
+/*!
+  \enum QContactFetchHint::OptimizationHint
+
+  This enum defines flags which may be set to inform the backend that the client does
+  not require certain information.  The backend may safely ignore the hint, but then
+  must return the full set of information relating to the optimization hint.
+
+  \value AllRequired Tells the backend that all information is required
+  \value NoRelationships Tells the backend that the client does not require retrieved contacts to include a cache of relationships
+  \value NoActionPreferences Tells the backend that the client does not require retrieved contacts to include a cache of action preferences
+  \value NoBinaryBlobs Tells the backend that the client does not require retrieved contacts to include binary blobs such as thumbnail images
+ */
+
+/*!
+  Constructs a new contact fetch hint which requests that the backend fetch all information
+ */
+QContactFetchHint::QContactFetchHint()
+    : d(new QContactFetchHintPrivate)
+{
+}
+
+/*!
+  Constructs a new contact fetch hint as a copy of \a other
+ */
+QContactFetchHint::QContactFetchHint(const QContactFetchHint &other)
+    : d(other.d)
+{
+}
+
+/*!
+  Frees any memory in use by the fetch hint
+ */
+QContactFetchHint::~QContactFetchHint()
+{
+}
+
+/*!
+  Assigns this fetch hint to be equal to the \a other fetch hint
+ */
+QContactFetchHint& QContactFetchHint::operator=(const QContactFetchHint& other)
+{
+    d = other.d;
+    return *this;
+}
+
+/*!
+  Returns the list of definition names that identify detail definitions of which details
+  the manager should (at a minimum) retrieve when fetching contacts.
+  This hint may be ignored by the backend, in which case it will return the full set of details for
+  each contact retrieved.
+
+  \sa setDetailDefinitionsHint()
+ */
+QStringList QContactFetchHint::detailDefinitionsHint() const
+{
+    return d->m_definitionsHint;
+}
+
+/*!
+  Sets the list of definition names that identify detail definitions of which details
+  the manager should (at a minimum) retrieve when fetching contacts to \a definitionNames.
+  This hint may be ignored by the backend, in which case it will return the full set of details for
+  each contact retrieved.
+
+  \sa detailDefinitionsHint()
+ */
+void QContactFetchHint::setDetailDefinitionsHint(const QStringList& definitionNames)
+{
+    d->m_definitionsHint = definitionNames;
+}
+
+/*!
+  Returns the list of relationship types that the manager should (at a minimum) retrieve
+  when fetching contacts.
+  This hint may be ignored by the backend, in which case it will return the full set of
+  relationships for each contact retrieved.
+
+  \sa setRelationshipTypesHint(), QContact::relationships()
+ */
+QStringList QContactFetchHint::relationshipTypesHint() const
+{
+    return d->m_relationshipsHint;
+}
+
+/*!
+  Sets the list of relationship types that the manager should (at a minimum) retrieve
+  when fetching contacts to \a relationshipTypes.
+  This hint may be ignored by the backend, in which case it will return the full set of
+  relationships for each contact retrieved.
+
+  \sa relationshipTypesHint(), QContact::relationships()
+ */
+void QContactFetchHint::setRelationshipTypesHint(const QStringList& relationshipTypes)
+{
+    d->m_relationshipsHint = relationshipTypes;
+}
+
+/*!
+  Returns the optimization hint flags specified by the client.
+  These hints may be ignored by the backend, in which case it will return
+  the full set of information accessible in a contact, including
+  relationships, action preferences, and binary blobs.
+
+  \sa setOptimizationHints()
+ */
+QContactFetchHint::OptimizationHints QContactFetchHint::optimizationHints() const
+{
+    return d->m_optimizationHints;
+}
+
+/*!
+  Sets the optimization hint flags specified by the client to \a hints.
+  These hints may be ignored by the backend, in which case it will return
+  the full set of information accessible in a contact, including
+  relationships, action preferences, and binary blobs.
+
+  \sa optimizationHints()
+ */
+void QContactFetchHint::setOptimizationHints(OptimizationHints hints)
+{
+    d->m_optimizationHints = hints;
+}
+
+QTM_END_NAMESPACE