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//
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// NpgsqlCircleProvider.cs
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//
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// Author:
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// Paul Schneider <paul@pschneider.fr>
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//
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// Copyright (c) 2015 GNU GPL
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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using System;
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using Yavsc.Model.Circles;
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using System.Collections.Specialized;
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using System.Configuration;
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using Npgsql;
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using NpgsqlTypes;
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using System.Collections.Generic;
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using System.Web.Security;
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namespace WorkFlowProvider
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{
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/// <summary>
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/// Npgsql circle provider.
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/// </summary>
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public class NpgsqlCircleProvider : CircleProvider
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{
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/// <summary>
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/// Initializes a new instance of the <see cref="WorkFlowProvider.NpgsqlCircleProvider"/> class.
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/// </summary>
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public NpgsqlCircleProvider ()
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{
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}
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#region implemented abstract members of CircleProvider
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/// <summary>
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/// Add the specified user.
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/// </summary>
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/// <param name="id">circle Identifier.</param>
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/// <param name="username">User name.</param>
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public override void Add (long id, string username)
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{
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using (NpgsqlConnection cnx = new NpgsqlConnection (connectionString))
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using (NpgsqlCommand cmd = cnx.CreateCommand ()) {
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cmd.CommandText = "insert into circle_members (circle_id, member) values (:cid,:uname)";
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cmd.Parameters.AddWithValue("cid",id);
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cmd.Parameters.AddWithValue("uname",username);
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cnx.Open ();
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cmd.ExecuteNonQuery ();
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cnx.Close ();
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}
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}
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/// <summary>
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/// Remove the specified user.
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/// </summary>
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/// <param name="id">circle Identifier.</param>
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/// <param name="username">User name.</param>
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public override void Remove (long id, string username)
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{
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using (NpgsqlConnection cnx = new NpgsqlConnection (connectionString))
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using (NpgsqlCommand cmd = cnx.CreateCommand ()) {
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cmd.CommandText = "delete from circle_members where circle_id = :cid and username = :uname";
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cmd.Parameters.AddWithValue("cid",id);
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cmd.Parameters.AddWithValue("uname",username);
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cnx.Open ();
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cmd.ExecuteNonQuery ();
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cnx.Close ();
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}
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}
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/// <summary>
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/// Get the specified id.
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/// </summary>
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/// <param name="id">Identifier.</param>
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public override Circle Get (long id)
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{
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Circle circ=null;
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using (NpgsqlConnection cnx = new NpgsqlConnection (connectionString)) {
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cnx.Open ();
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using (NpgsqlCommand cmd = cnx.CreateCommand ()) {
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cmd.CommandText = "select title, owner from circle where _id = :cid";
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cmd.Parameters.AddWithValue ("cid", id);
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using (NpgsqlDataReader dr = cmd.ExecuteReader ()) {
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if (dr.Read ()) {
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circ = new Circle ();
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circ.Id = id;
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circ.Title = dr.GetString (
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dr.GetOrdinal ("title"));
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circ.Owner = dr.GetString (
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dr.GetOrdinal ("owner"));
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}
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dr.Close ();
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}
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}
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if (circ != null) {
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using (NpgsqlCommand cmd = cnx.CreateCommand ()) {
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cmd.CommandText = "select member from circle_members where circle_id = :cid";
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cmd.Parameters.AddWithValue ("cid", id);
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cmd.Prepare ();
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List<string> members = new List<string> ();
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using (NpgsqlDataReader dr = cmd.ExecuteReader ()) {
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while (dr.Read ())
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members.Add (dr.GetString (0));
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dr.Close ();
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circ.Members = members.ToArray ();
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}
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}
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}
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cnx.Close ();
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}
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return circ;
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}
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/// <summary>
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/// Add the specified owner, title and users.
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/// </summary>
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/// <param name="owner">Owner.</param>
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/// <param name="title">Title.</param>
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/// <param name="users">Users.</param>
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public override long Create (string owner, string title, string[] users)
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{
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long id = 0;
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using (NpgsqlConnection cnx = new NpgsqlConnection (connectionString)) {
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cnx.Open ();
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using (NpgsqlCommand cmd = cnx.CreateCommand ()) {
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cmd.CommandText = "insert into circle (owner,title,applicationname) values (:wnr,:tit,:app) returning _id";
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cmd.Parameters.AddWithValue ("wnr", owner);
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cmd.Parameters.AddWithValue ("tit", title);
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cmd.Parameters.AddWithValue ("app", applicationName);
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id = (long) cmd.ExecuteScalar ();
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}
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using (NpgsqlCommand cmd = cnx.CreateCommand ()) {
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cmd.CommandText = "insert into circle_members (circle_id,member) values (@cid,@mbr)";
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cmd.Parameters.AddWithValue ("cid", id);
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cmd.Parameters.Add ("mbr", NpgsqlDbType.Varchar);
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cmd.Prepare ();
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foreach (string user in users) {
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object pkid = Membership.GetUser (user).ProviderUserKey;
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cmd.Parameters[1].Value = pkid.ToString();
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cmd.ExecuteNonQuery ();
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}
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}
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cnx.Close ();
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}
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return id;
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}
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/// <summary>
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/// Delete the specified owner and title.
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/// </summary>
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/// <param name="id">Identifier.</param>
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public override void Delete (long id)
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{
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using (NpgsqlConnection cnx = new NpgsqlConnection (connectionString))
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using (NpgsqlCommand cmd = cnx.CreateCommand ()) {
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cmd.CommandText = "delete from circle where _id = @cid";
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cmd.Parameters.AddWithValue("cid",id);
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cnx.Open ();
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cmd.ExecuteNonQuery ();
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cnx.Close ();
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}
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}
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/// <summary>
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/// List user's circles.
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/// </summary>
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/// <param name="user">User.</param>
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public override CircleInfoCollection List (string user)
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{
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CircleInfoCollection cc = null;
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using (NpgsqlConnection cnx = new NpgsqlConnection (connectionString))
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using (NpgsqlCommand cmd = cnx.CreateCommand ()) {
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cmd.CommandText = "select _id, title from circle where owner = :wnr";
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cmd.Parameters.AddWithValue("wnr",user);
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cnx.Open ();
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cmd.Prepare ();
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using (NpgsqlDataReader rdr = cmd.ExecuteReader ()) {
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if (rdr.HasRows) {
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cc = new CircleInfoCollection ();
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while (rdr.Read ()) {
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string title = null;
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int ottl = rdr.GetOrdinal ("title");
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if (!rdr.IsDBNull (ottl))
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title = rdr.GetString (ottl);
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long id = (long) rdr.GetInt64 (
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rdr.GetOrdinal ("_id"));
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cc.Add (new CircleInfo (id,title));
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}
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}
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rdr.Close ();
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}
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cnx.Close ();
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}
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return cc;
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}
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#endregion
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string connectionString = null;
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string applicationName = null;
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/// <summary>
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/// Initialize this object using the specified name and config.
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/// </summary>
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/// <param name="name">Name.</param>
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/// <param name="config">Config.</param>
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public override void Initialize (string name, NameValueCollection config)
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{
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if ( string.IsNullOrWhiteSpace(config ["connectionStringName"]))
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throw new ConfigurationErrorsException ("No name for Npgsql connection string found");
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connectionString = ConfigurationManager.ConnectionStrings [config ["connectionStringName"]].ConnectionString;
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applicationName = config["applicationName"] ?? "/";
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}
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}
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}
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