todo list update

git-svn-id: svn://localhost/project_picapica/trunk@128 fb96df88-216d-11de-830c-f3023f12d8ac

1 files changed, 73 insertions, 0 deletions

diff --git a/pica-client/nodes.cpp b/pica-client/nodes.cpp
new file mode 100644
index 0000000..eb8bfcc
--- /dev/null
+++ b/pica-client/nodes.cpp
@@ -0,0 +1,73 @@
+#include "nodes.h"
+
+Nodes::Nodes(QString storage)
+{
+    dbconn=QSqlDatabase::addDatabase("QSQLITE");
+    dbconn.setDatabaseName(storage);
+
+    if (!dbconn.open())
+    {
+    lasterr=dbconn.lastError();
+    return;
+    }
+//check if table nodes exists
+}
+
+void Nodes::Add(NodeRecord &n)
+{
+    QSqlQuery query;
+
+    query.prepare("insert into nodes (address, port, last_active, inactive_count) values (:addr, :port, strftime('%s','now'), 0)");
+    query.bindValue(":addr",n.address);
+    query.bindValue(":port",n.port);
+    query.exec();
+
+    lasterr=query.lastError();
+}
+
+QList<Nodes::NodeRecord> Nodes::GetNodes()
+{
+    QList<NodeRecord> L;
+    NodeRecord r;
+    QSqlQuery query;
+
+    query.setForwardOnly(true);
+    query.exec("select address, port from nodes order by inactive_count asc, last_active desc");
+    lasterr=query.lastError();
+
+    if (lasterr.isValid())
+        return L;
+
+    while(query.next())
+    {
+        r.address =query.value(0).toString();
+        r.port =query.value(1).toUInt();
+
+        L<<r;
+    }
+
+    return L;
+}
+
+void Nodes::MakeClean()
+{
+
+}
+
+void Nodes::UpdateStatus(NodeRecord &n, bool alive)
+{
+    QSqlQuery query;
+
+    if (alive)
+        query.prepare("update nodes set last_active = strftime('%s','now'), inactive_count = 0 where address = :addr and port = :port");
+    else
+        query.prepare("update nodes set inactive_count = inactive_count + 1 where address = :addr and port = :port");
+
+    query.bindValue(":addr",n.address);
+    query.bindValue(":port",n.port);
+    query.exec();
+
+    lasterr=query.lastError();
+}
+
+