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355 lines
13 KiB
355 lines
13 KiB
#if MYSQL_6_9
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// Copyright (c) 2004-2008 MySQL AB, 2008-2009 Sun Microsystems, Inc.
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//
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// MySQL Connector/NET is licensed under the terms of the GPLv2
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// <http://www.gnu.org/licenses/old-licenses/gpl-2.0.html>, like most
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// MySQL Connectors. There are special exceptions to the terms and
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// conditions of the GPLv2 as it is applied to this software, see the
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// FLOSS License Exception
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// <http://www.mysql.com/about/legal/licensing/foss-exception.html>.
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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 General Public License as published
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// by the Free Software Foundation; version 2 of the License.
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//
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// This program is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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// or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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// for more details.
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//
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// You should have received a copy of the GNU General Public License along
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// with this program; if not, write to the Free Software Foundation, Inc.,
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// 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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using System;
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using System.Collections;
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using System.ComponentModel;
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using System.Collections.Generic;
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using Externals.MySql.Data.MySqlClient.Properties;
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namespace Externals.MySql.Data.MySqlClient
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{
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/// <summary>
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/// Represents a collection of parameters relevant to a <see cref="MySqlCommand"/> as well as their respective mappings to columns in a <see cref="System.Data.DataSet"/>. This class cannot be inherited.
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/// </summary>
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internal sealed partial class MySqlParameterCollection
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{
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List<MySqlParameter> items = new List<MySqlParameter>();
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private Dictionary<string,int> indexHashCS;
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private Dictionary<string,int> indexHashCI;
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//turns to true if any parameter is unnamed
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internal bool containsUnnamedParameters;
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internal MySqlParameterCollection(MySqlCommand cmd)
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{
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indexHashCS = new Dictionary<string, int>();
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indexHashCI = new Dictionary<string,int>(StringComparer.CurrentCultureIgnoreCase);
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containsUnnamedParameters = false;
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Clear();
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}
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/// <summary>
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/// Gets the number of MySqlParameter objects in the collection.
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/// </summary>
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public override int Count
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{
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get { return items.Count; }
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}
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#region Public Methods
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/// <summary>
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/// Gets the <see cref="MySqlParameter"/> at the specified index.
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/// </summary>
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/// <overloads>Gets the <see cref="MySqlParameter"/> with a specified attribute.
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/// [C#] In C#, this property is the indexer for the <see cref="MySqlParameterCollection"/> class.
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/// </overloads>
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public new MySqlParameter this[int index]
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{
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get { return InternalGetParameter(index); }
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set { InternalSetParameter(index, value); }
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}
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/// <summary>
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/// Gets the <see cref="MySqlParameter"/> with the specified name.
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/// </summary>
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public new MySqlParameter this[string name]
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{
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get { return InternalGetParameter(name); }
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set { InternalSetParameter(name, value); }
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}
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/// <summary>
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/// Adds the specified <see cref="MySqlParameter"/> object to the <see cref="MySqlParameterCollection"/>.
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/// </summary>
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/// <param name="value">The <see cref="MySqlParameter"/> to add to the collection.</param>
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/// <returns>The newly added <see cref="MySqlParameter"/> object.</returns>
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public MySqlParameter Add(MySqlParameter value)
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{
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return InternalAdd(value, -1);
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}
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/// <summary>
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/// Adds a <see cref="MySqlParameter"/> to the <see cref="MySqlParameterCollection"/> given the specified parameter name and value.
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/// </summary>
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/// <param name="parameterName">The name of the parameter.</param>
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/// <param name="value">The <see cref="MySqlParameter.Value"/> of the <see cref="MySqlParameter"/> to add to the collection.</param>
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/// <returns>The newly added <see cref="MySqlParameter"/> object.</returns>
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[Obsolete("Add(String parameterName, Object value) has been deprecated. Use AddWithValue(String parameterName, Object value)")]
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public MySqlParameter Add(string parameterName, object value)
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{
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return Add(new MySqlParameter(parameterName, value));
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}
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public MySqlParameter AddWithValue(string parameterName, object value)
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{
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return Add(new MySqlParameter(parameterName, value));
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}
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/// <summary>
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/// Adds a <see cref="MySqlParameter"/> to the <see cref="MySqlParameterCollection"/> given the parameter name and the data type.
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/// </summary>
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/// <param name="parameterName">The name of the parameter.</param>
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/// <param name="dbType">One of the <see cref="MySqlDbType"/> values. </param>
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/// <returns>The newly added <see cref="MySqlParameter"/> object.</returns>
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public MySqlParameter Add(string parameterName, MySqlDbType dbType)
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{
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return Add(new MySqlParameter(parameterName, dbType));
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}
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/// <summary>
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/// Adds a <see cref="MySqlParameter"/> to the <see cref="MySqlParameterCollection"/> with the parameter name, the data type, and the column length.
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/// </summary>
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/// <param name="parameterName">The name of the parameter.</param>
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/// <param name="dbType">One of the <see cref="MySqlDbType"/> values. </param>
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/// <param name="size">The length of the column.</param>
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/// <returns>The newly added <see cref="MySqlParameter"/> object.</returns>
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public MySqlParameter Add(string parameterName, MySqlDbType dbType, int size)
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{
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return Add(new MySqlParameter(parameterName, dbType, size));
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}
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#endregion
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/// <summary>
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/// Removes all items from the collection.
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/// </summary>
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public override void Clear()
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{
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foreach (MySqlParameter p in items)
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p.Collection = null;
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items.Clear();
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indexHashCS.Clear();
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indexHashCI.Clear();
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}
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void CheckIndex(int index)
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{
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if (index < 0 || index >= Count)
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throw new IndexOutOfRangeException("Parameter index is out of range.");
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}
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private MySqlParameter InternalGetParameter(int index)
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{
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CheckIndex(index);
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return items[index];
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}
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private MySqlParameter InternalGetParameter(string parameterName)
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{
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int index = IndexOf(parameterName);
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if (index < 0)
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{
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// check to see if the user has added the parameter without a
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// parameter marker. If so, kindly tell them what they did.
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if (parameterName.StartsWith("@", StringComparison.Ordinal) ||
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parameterName.StartsWith("?", StringComparison.Ordinal))
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{
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string newParameterName = parameterName.Substring(1);
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index = IndexOf(newParameterName);
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if (index != -1)
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return items[index];
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}
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throw new ArgumentException("Parameter '" + parameterName + "' not found in the collection.");
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}
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return items[index];
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}
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private void InternalSetParameter(string parameterName, MySqlParameter value)
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{
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int index = IndexOf(parameterName);
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if (index < 0)
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throw new ArgumentException("Parameter '" + parameterName + "' not found in the collection.");
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InternalSetParameter(index, value);
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}
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private void InternalSetParameter(int index, MySqlParameter value)
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{
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MySqlParameter newParameter = value as MySqlParameter;
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if (newParameter == null)
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throw new ArgumentException(Resources.NewValueShouldBeMySqlParameter);
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CheckIndex(index);
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MySqlParameter p = (MySqlParameter)items[index];
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// first we remove the old parameter from our hashes
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indexHashCS.Remove(p.ParameterName);
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indexHashCI.Remove(p.ParameterName);
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// then we add in the new parameter
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items[index] = newParameter;
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indexHashCS.Add(value.ParameterName, index);
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indexHashCI.Add(value.ParameterName, index);
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}
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/// <summary>
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/// Gets the location of the <see cref="MySqlParameter"/> in the collection with a specific parameter name.
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/// </summary>
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/// <param name="parameterName">The name of the <see cref="MySqlParameter"/> object to retrieve. </param>
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/// <returns>The zero-based location of the <see cref="MySqlParameter"/> in the collection.</returns>
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public override int IndexOf(string parameterName)
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{
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int i = -1;
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if (!indexHashCS.TryGetValue(parameterName, out i) &&
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!indexHashCI.TryGetValue(parameterName, out i))
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return -1;
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return i;
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}
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/// <summary>
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/// Gets the location of a <see cref="MySqlParameter"/> in the collection.
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/// </summary>
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/// <param name="value">The <see cref="MySqlParameter"/> object to locate. </param>
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/// <returns>The zero-based location of the <see cref="MySqlParameter"/> in the collection.</returns>
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/// <overloads>Gets the location of a <see cref="MySqlParameter"/> in the collection.</overloads>
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public override int IndexOf(object value)
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{
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MySqlParameter parameter = value as MySqlParameter;
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if (null == parameter)
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throw new ArgumentException("Argument must be of type DbParameter", "value");
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return items.IndexOf(parameter);
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}
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internal void ParameterNameChanged(MySqlParameter p, string oldName, string newName)
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{
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int index = IndexOf(oldName);
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indexHashCS.Remove(oldName);
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indexHashCI.Remove(oldName);
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indexHashCS.Add(newName, index);
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indexHashCI.Add(newName, index);
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}
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private MySqlParameter InternalAdd(MySqlParameter value, int index)
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{
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if (value == null)
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throw new ArgumentException("The MySqlParameterCollection only accepts non-null MySqlParameter type objects.", "value");
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// if the parameter is unnamed, then assign a default name
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if (String.IsNullOrEmpty(value.ParameterName))
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value.ParameterName = String.Format("Parameter{0}", GetNextIndex());
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// make sure we don't already have a parameter with this name
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if (IndexOf(value.ParameterName) >= 0)
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{
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throw new MySqlException(
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String.Format(Resources.ParameterAlreadyDefined, value.ParameterName));
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}
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else
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{
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string inComingName = value.ParameterName;
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if (inComingName[0] == '@' || inComingName[0] == '?')
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inComingName = inComingName.Substring(1, inComingName.Length - 1);
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if (IndexOf(inComingName) >= 0)
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throw new MySqlException(
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String.Format(Resources.ParameterAlreadyDefined, value.ParameterName));
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}
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if (index == -1)
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{
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items.Add(value);
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index = items.Count - 1;
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}
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else
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{
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items.Insert(index, value);
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AdjustHashes(index, true);
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}
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indexHashCS.Add(value.ParameterName, index);
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indexHashCI.Add(value.ParameterName, index);
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value.Collection = this;
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return value;
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}
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private int GetNextIndex()
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{
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int index = Count+1;
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while (true)
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{
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string name = "Parameter" + index.ToString();
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if (!indexHashCI.ContainsKey(name)) break;
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index++;
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}
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return index;
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}
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private static void AdjustHash(Dictionary<string,int> hash, string parameterName, int keyIndex, bool addEntry)
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{
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if (!hash.ContainsKey(parameterName)) return;
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int index = (int)hash[parameterName];
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if (index < keyIndex) return;
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hash[parameterName] = addEntry ? ++index : --index;
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}
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/// <summary>
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/// This method will update all the items in the index hashes when
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/// we insert a parameter somewhere in the middle
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/// </summary>
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/// <param name="keyIndex"></param>
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/// <param name="addEntry"></param>
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private void AdjustHashes(int keyIndex, bool addEntry)
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{
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for (int i = 0; i < Count; i++)
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{
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string name = (items[i] as MySqlParameter).ParameterName;
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AdjustHash(indexHashCI, name, keyIndex, addEntry);
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AdjustHash(indexHashCS, name, keyIndex, addEntry);
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}
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}
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private MySqlParameter GetParameterFlexibleInternal(string baseName)
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{
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int index = IndexOf(baseName);
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if (-1 == index)
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index = IndexOf("?" + baseName);
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if (-1 == index)
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index = IndexOf("@" + baseName);
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if (-1 != index)
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return this[index];
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return null;
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}
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internal MySqlParameter GetParameterFlexible(string parameterName, bool throwOnNotFound)
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{
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string baseName = parameterName;
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MySqlParameter p = GetParameterFlexibleInternal(baseName);
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if (p != null) return p;
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if (parameterName.StartsWith("@", StringComparison.Ordinal) || parameterName.StartsWith("?", StringComparison.Ordinal))
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baseName = parameterName.Substring(1);
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p = GetParameterFlexibleInternal(baseName);
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if (p != null) return p;
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if (throwOnNotFound)
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throw new ArgumentException("Parameter '" + parameterName + "' not found in the collection.");
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return null;
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}
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}
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}
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#endif
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