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QSqlQuery::isNull string overload

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Introduce isNull overload to take field name as a parameter.

This is corresponding to the commit
7e6e141234

Change-Id: I122f79707d26eaa09c2f38dc31aeee1dac7de33b
Reviewed-by: Mark Brand <mabrand@mabrand.nl>
This commit is contained in:
Tasuku Suzuki 2013-06-17 10:44:09 +09:00 committed by The Qt Project
parent ded6a7081b
commit c3c424b384
3 changed files with 24 additions and 0 deletions
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18
src/sql/kernel/qsqlquery.cpp
View File

@ -325,6 +325,24 @@ bool QSqlQuery::isNull(int field) const
|| d->sqlResult->isNull(field);
}
/*!
\overload
Returns true if there is no field with this \a name; otherwise
returns isNull(int index) for the corresponding field index.
This overload is less efficient than \l{QSqlQuery::}{isNull()}
*/
bool QSqlQuery::isNull(const QString &name) const
{
int index = d->sqlResult->record().indexOf(name);
if (index > -1)
return isNull(index);
qWarning("QSqlQuery::isNull: unknown field name '%s'", qPrintable(name));
return true;
}
/*!
Executes the SQL in \a query. Returns \c true and sets the query state

1
src/sql/kernel/qsqlquery.h
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@ -70,6 +70,7 @@ public:
bool isValid() const;
bool isActive() const;
bool isNull(int field) const;
bool isNull(const QString &name) const;
int at() const;
QString lastQuery() const;
int numRowsAffected() const;

5
tests/auto/sql/kernel/qsqlquery/tst_qsqlquery.cpp
View File

@ -1384,7 +1384,9 @@ void tst_QSqlQuery::isNull()
QVERIFY_SQL(q, exec("select id, t_varchar from " + qTableName("qtest_null", __FILE__, db) + " order by id"));
QVERIFY( q.next() );
QVERIFY( !q.isNull( 0 ) );
QVERIFY(!q.isNull("id"));
QVERIFY( q.isNull( 1 ) );
QVERIFY(q.isNull("t_varchar"));
QCOMPARE( q.value( 0 ).toInt(), 0 );
QCOMPARE( q.value( 1 ).toString(), QString() );
QVERIFY( !q.value( 0 ).isNull() );
@ -1392,10 +1394,13 @@ void tst_QSqlQuery::isNull()
QVERIFY( q.next() );
QVERIFY( !q.isNull( 0 ) );
QVERIFY(!q.isNull("id"));
QVERIFY( !q.isNull( 1 ) );
QVERIFY(!q.isNull("t_varchar"));
// For a non existent field, it should be returning true.
QVERIFY(q.isNull(2));
QVERIFY(q.isNull("unknown"));
}
/*! TDS specific BIT field test */