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Branched from the monolithic repo, Qt master branch, at commit
896db169ea224deb96c59ce8af800d019de63f12

1 files changed, 256 insertions, 0 deletions

diff --git a/src/sql/kernel/qsqlindex.cpp b/src/sql/kernel/qsqlindex.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSql module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 "qsqlindex.h"
+
+#include "qsqlfield.h"
+#include "qstringlist.h"
+
+QT_BEGIN_NAMESPACE
+
+/*!
+    \class QSqlIndex
+    \brief The QSqlIndex class provides functions to manipulate and
+    describe database indexes.
+
+    \ingroup database
+    \inmodule QtSql
+
+    An \e index refers to a single table or view in a database.
+    Information about the fields that comprise the index can be used
+    to generate SQL statements.
+*/
+
+/*!
+    Constructs an empty index using the cursor name \a cursorname and
+    index name \a name.
+*/
+
+QSqlIndex::QSqlIndex(const QString& cursorname, const QString& name)
+    : cursor(cursorname), nm(name)
+{
+}
+
+/*!
+    Constructs a copy of \a other.
+*/
+
+QSqlIndex::QSqlIndex(const QSqlIndex& other)
+    : QSqlRecord(other), cursor(other.cursor), nm(other.nm), sorts(other.sorts)
+{
+}
+
+/*!
+    Sets the index equal to \a other.
+*/
+
+QSqlIndex& QSqlIndex::operator=(const QSqlIndex& other)
+{
+    cursor = other.cursor;
+    nm = other.nm;
+    sorts = other.sorts;
+    QSqlRecord::operator=(other);
+    return *this;
+}
+
+/*!
+    Destroys the object and frees any allocated resources.
+*/
+
+QSqlIndex::~QSqlIndex()
+{
+
+}
+
+/*!
+    Sets the name of the index to \a name.
+*/
+
+void QSqlIndex::setName(const QString& name)
+{
+    nm = name;
+}
+
+/*!
+    \fn QString QSqlIndex::name() const
+
+    Returns the name of the index.
+*/
+
+/*!
+    Appends the field \a field to the list of indexed fields. The
+    field is appended with an ascending sort order.
+*/
+
+void QSqlIndex::append(const QSqlField& field)
+{
+    append(field, false);
+}
+
+/*!
+    \overload
+
+    Appends the field \a field to the list of indexed fields. The
+    field is appended with an ascending sort order, unless \a desc is
+    true.
+*/
+
+void QSqlIndex::append(const QSqlField& field, bool desc)
+{
+    sorts.append(desc);
+    QSqlRecord::append(field);
+}
+
+
+/*!
+    Returns true if field \a i in the index is sorted in descending
+    order; otherwise returns false.
+*/
+
+bool QSqlIndex::isDescending(int i) const
+{
+    if (i >= 0 && i < sorts.size())
+        return sorts[i];
+    return false;
+}
+
+/*!
+    If \a desc is true, field \a i is sorted in descending order.
+    Otherwise, field \a i is sorted in ascending order (the default).
+    If the field does not exist, nothing happens.
+*/
+
+void QSqlIndex::setDescending(int i, bool desc)
+{
+    if (i >= 0 && i < sorts.size())
+        sorts[i] = desc;
+}
+
+#ifdef QT3_SUPPORT
+
+/*!
+    Returns a comma-separated list of all the index's field names as a
+    string. This string is suitable, for example, for generating a
+    SQL SELECT statement. Only generated fields are included in the
+    list (see \l{isGenerated()}). If a \a prefix is specified, e.g. a
+    table name, it is prepended before all field names in the form:
+
+    "\a{prefix}.<fieldname>"
+
+    If \a sep is specified, each field is separated by \a sep. If \a
+    verbose is true (the default), each field contains a suffix
+    indicating an ASCending or DESCending sort order.
+*/
+
+QString QSqlIndex::toString(const QString& prefix, const QString& sep, bool verbose) const
+{
+    QString s;
+    bool comma = false;
+    for (int i = 0; i < count(); ++i) {
+        if(comma)
+            s += sep + QLatin1Char(' ');
+        s += createField(i, prefix, verbose);
+        comma = true;
+    }
+    return s;
+}
+
+/*!
+    Returns a list of all the index's field names. Only generated
+    fields are included in the list (see \l{isGenerated()}). If a \a
+    prefix is specified, e.g. a table name, all fields are prefixed in
+    the form:
+
+    "\a{prefix}.<fieldname>"
+
+    If \a verbose is true (the default), each field contains a suffix
+    indicating an ASCending or DESCending sort order.
+
+    Note that if you want to iterate over the list, you should iterate
+    over a copy, e.g.
+    \snippet doc/src/snippets/code/src_sql_kernel_qsqlindex.cpp 0
+
+*/
+QStringList QSqlIndex::toStringList(const QString& prefix, bool verbose) const
+{
+    QStringList s;
+    for (int i = 0; i < count(); ++i)
+        s += createField(i, prefix, verbose);
+    return s;
+}
+#endif
+
+/*! \internal
+
+  Creates a string representing the field number \a i using prefix \a
+  prefix. If \a verbose is true, ASC or DESC is included in the field
+  description if the field is sorted in ASCending or DESCending order.
+*/
+
+QString QSqlIndex::createField(int i, const QString& prefix, bool verbose) const
+{
+    QString f;
+    if (!prefix.isEmpty())
+        f += prefix + QLatin1Char('.');
+    f += field(i).name();
+    if (verbose)
+        f += QLatin1Char(' ') + QString((isDescending(i)
+                    ? QLatin1String("DESC") : QLatin1String("ASC")));
+    return f;
+}
+
+/*!
+    \fn QString QSqlIndex::cursorName() const
+
+    Returns the name of the cursor which the index is associated with.
+*/
+
+
+/*!
+    Sets the name of the cursor that the index is associated with to
+    \a cursorName.
+*/
+void QSqlIndex::setCursorName(const QString& cursorName)
+{
+    cursor = cursorName;
+}
+
+QT_END_NAMESPACE