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/* -*- Mode: Vala; indent-tabs-mode: t; c-basic-offset: 4; tab-width: 4 -*- */
/*
* libgdadata
* Copyright (C) Daniel Espinosa Ortiz 2011 <esodan@gmail.com>
*
* libgda is free software: you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* libgda is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
using Gee;
using Gda;
namespace GdaData {
public class RecordCollection : AbstractCollection<DbRecord>, DbRecordCollection
{
private DataModel _model;
private DbTable _table;
public DbTable table { get { return table; } }
public DataModel model { get { return _model; } }
public Connection connection { get; set; }
public RecordCollection (DataModel m, DbTable table)
{
_model = m;
_table = table;
}
// AbstractCollection Implementation
public override bool add (DbRecord item)
{
try {
int r = _model.append_row ();
foreach (DbField f in item.fields) {
_model.set_value_at (_model.get_column_index (f.name), r, f.value);
}
return true;
}
catch (Error e) { GLib.warning (e.message); }
return false;
}
public override void clear ()
{
try {
var iter = _model.create_iter ();
while (iter.move_next ()) {
_model.remove_row (iter.get_row ());
}
((DataProxy) _model).apply_all_changes ();
}
catch (Error e) { GLib.warning (e.message); }
}
public override bool contains (DbRecord item)
{
bool found = true;
var iter = _model.create_iter ();
while (iter.move_next ()) {
foreach (DbField k in item.keys) {
try {
Value id = iter.get_value_at (iter.data_model.get_column_index (k.name));
Value v = k.value;
if (Gda.value_compare (id,v) != 0)
found = false;
}
catch (Error e) {
GLib.warning (e.message);
found = false;
}
}
if (found) break;
}
return found;
}
public override Gee.Iterator<DbRecord> iterator ()
{
Gda.DataModelIter iter;
iter = _model.create_iter ();
return new RecordCollectionIterator (iter, _table);
}
public override bool remove (DbRecord item)
{
var iter = _model.create_iter ();
while (iter.move_next ()) {
bool found = true;
foreach (DbField k in item.keys) {
try {
Value id = iter.get_value_at (iter.data_model.get_column_index (k.name));
Value v = k.value;
if (Gda.value_compare (id,v) != 0)
found = false;
}
catch (Error e) {
GLib.warning (e.message);
found = false;
}
}
if (found) {
try {
_model.remove_row (iter.get_row ());
((DataProxy)_model).apply_all_changes ();
return true;
} catch {}
}
}
return false;
}
public override bool read_only {
get {
var f = _model.get_access_flags ();
if ( (f & Gda.DataModelAccessFlags.INSERT
& Gda.DataModelAccessFlags.UPDATE
& Gda.DataModelAccessFlags.DELETE) != 0 )
return true;
else
return false;
}
}
public override int size {
get {
return _model.get_n_rows ();
}
}
//
public string to_string ()
{
return _model.dump_as_string ();
}
}
}
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