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SQLSERVER数据库管理员的专用连接DAC

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Jun 07, 2016 pm 03:44 PM

DACsqlserverdedicateddatabaseadministratorconnect

SQLSERVER数据库管理员的专用连接DAC DAC： Dedicated Admin Connection 当 SQL Server 因系统资源不足，或其它异常导致无法建立数据库连接时，可以使用系统预留的 DAC 连接到数据库，进行一些问题诊断和故障排除。DAC只能使用有限的资源。请勿使用DAC运行

SQLSERVER数据库管理员的专用连接DAC

DAC：Dedicated Admin Connection

当SQL Server因系统资源不足，或其它异常导致无法建立数据库连接时，可以使用系统预留的DAC连接到数据库，进行一些问题诊断和故障排除。DAC只能使用有限的资源。请勿使用DAC运行需要消耗大量资源的查询，否则可能发生严重的阻塞。

如何启用DAC功能专用管理员连接功能以及注意事项

1、只有系統管理員(sysadmin)角色相關成員可以使用DAC連接存取SQL Server(Local)本地连接

2、一個執行個體只能存在一個DAC。

3、使用DAC通常是讓DBA查詢和排解SQL Server問題(當無法正常連接執行個體)，

4、好比執行sp_who2、Kill SPID、DBCC SQLPERF、DBCC DROPCLEANBUFFERS …等,使用DAC連接時，切勿執行需耗費大量資源的命令，如DBCC CHECKDB、DBCC SHRINKDATABASE..等

5、使用DAC登录才能修改系统表或者查看系统表，以前SQL2000的时候你可以随便修改系统表，到了SQL2005就开始限制您了

开启DAC的SQL

<span> 1</span> <span>USE</span><span> master        
</span><span> 2</span> <span>GO</span>        
<span> 3</span> sp_configure <span>'</span><span>show advanced options</span><span>'</span>, <span>1</span> 
<span> 4</span> <span>GO</span>    
<span> 5</span> sp_configure <span>'</span><span>remote admin connections</span><span>'</span>, <span>1</span> 
<span> 6</span> <span>GO</span>        
<span> 7</span> <span>RECONFIGURE</span> <span>WITH</span><span> OVERRIDE    
</span><span> 8</span> <span>GO</span>
<span> 9</span> 
<span>10</span> 
<span>11</span> <span>SELECT</span> <span>*</span>  <span>FROM</span> sys.configurations <span>where</span> name <span>=</span> <span>'</span><span>remote admin connections</span><span>'</span>

也可以在外围应用配置器那里开启

SQLSERVER数据库管理员的专用连接DAC

命令行下使用DAC登录
sqlcmd加上 /A 选项专用管理连接
sqlcmd /S JOE /E /A
1>DBCC DROPCLEANBUFFERS
2>GO

排错和诊断的SQL

<span>1</span> <span>SELECT</span> <span>*</span> <span>FROM</span><span> sys.dm_tran_locks
</span><span>2</span> <span>SELECT</span> <span>*</span> <span>FROM</span><span> sys.dm_os_memory_cache_counters
</span><span>3</span> <span>SELECT</span> <span>*</span> <span>FROM</span><span> sys.dm_exec_requests 
</span><span>4</span> <span>SELECT</span> <span>*</span> <span>FROM</span> sys.dm_exec_sessions

例如查询 sys.dm_tran_locks 以了解锁定状态

查询 sys.dm_os_memory_cache_counters ，检查缓存数量

查询sys.dm_exec_requests 和 sys.dm_exec_sessions 以了解活动的会话和请求。
避免使用需要消耗大量资源的 DMV（例如，sys.dm_tran_version_store 需要扫描整个版本存储区，并且会导致大量的 I/O）或使用了复杂联接的 DMV

在sqlserver management studio中使用DAC连接的时候，要选择新建查询或者数据库引擎查询，不能使用一上来默认的那个登录框进行DAC连接登录，那个

是连接数据库引擎的，如果用DAC连数据库引擎，会报不支持DAC连接。

SQLSERVER数据库管理员的专用连接DAC

下面说一下DAC侦听的端口号

若要了解 DAC 所侦听的端口号，可以看SQL错误日志
SQL错误日志
消息
Dedicated admin connection support was established for listening remotely on port 1434.

其他有关DAC错误日志的消息：

消息
Could not connect because the maximum number of '1' dedicated administrator connections already exists. Before a new connection can be made, the existing dedicated administrator connection must be dropped, either by logging off or ending the process. [客户端: 127.0.0.1]

消息
Configuration option 'remote admin connections' changed from 1 to 1. Run the RECONFIGURE statement to install

DAC的本地连接和远程连接的方式：

如果将 SQL Server 配置为接受远程管理连接，则必须使用显式端口号启动 DAC：

sqlcmd –Stcp:,

sqlcmd /Stcp:192.168.1.100,1434 /U sa /P test

SQL Server 错误日志列出了 DAC 的端口号，默认情况下为 1434。

如果将 SQL Server 配置为只接受本地 DAC 连接，请使用以下命令和环回适配器进行连接：

sqlcmd –S127.0.0.1,1434

或者

sqlcmd加上 /A 选项专用管理连接
sqlcmd /S JOE /E /A

或者

SQLSERVER数据库管理员的专用连接DAC

或者

SQLSERVER数据库管理员的专用连接DAC

总结：经过本人的实验，发现无论你是用sqlcmd或者SSMS，本地连接还是远程连接，都要使用这种方式

sqlcmd –Stcp:,

本地：sqlcmd –S127.0.0.1,1434

远程：sqlcmd /Stcp:192.168.1.100,1434 /U sa /P test

网上有些文章说不用加端口号，启用SQL Browser服务，就可以连接SQLSERVER，实际上不加1434端口号的话，已经不是在使用DAC来

连接SQLSERVER了，不加1434端口号使用的只是普通连接

2013-11-30补充：

反编译了一下DAC的DLL

在下面的公用DLL路径

DAC功能应该就是调用这个路径下的C:\Program Files\Microsoft SQL Server\100\SDK\Assemblies\Microsoft.SqlServer.Management.Dac.dll

用ILSpy这个工具来反编译，实际上SQLSRVER很多功能组件都是用.NET来编写的

除非一些核心功能组件用C++或者C，你们会发现很多DLL都可以用ILSpy这个.NET反编译工具来反编译

微乳并没有混淆他们的代码，这些如果没有开发文档的话，要理解这些代码的层次结构和意思会比较困难

SQLSERVER数据库管理员的专用连接DAC

其中一个类的代码

SQLSERVER数据库管理员的专用连接DAC

<span>  1</span> <span>using Microsoft.SqlServer.Management.Common;
</span><span>  2</span> <span>using Microsoft.SqlServer.Management.Smo;
</span><span>  3</span> <span>using Microsoft.SqlServer.Management.SmoMetadataProvider;
</span><span>  4</span> <span>using Microsoft.SqlServer.Management.SqlParser.Common;
</span><span>  5</span> <span>using Microsoft.SqlServer.Management.SqlParser.Metadata;
</span><span>  6</span> <span>using Microsoft.SqlServer.Management.SqlParser.MetadataDifferencer;
</span><span>  7</span> <span>using Microsoft.SqlServer.Management.SqlParser.MetadataServices;
</span><span>  8</span> <span>using System;
</span><span>  9</span> <span>using System.Collections;
</span><span> 10</span> <span>using System.Collections.Generic;
</span><span> 11</span> <span>using System.Globalization;
</span><span> 12</span> <span>using System.IO;
</span><span> 13</span> <span>using System.Linq;
</span><span> 14</span> <span>using System.Runtime.CompilerServices;
</span><span> 15</span> using System.<span>Text</span><span>;
</span><span> 16</span> using System.<span>Text</span><span>.RegularExpressions;
</span><span> 17</span> <span>using System.Xml;
</span><span> 18</span> <span>namespace Microsoft.SqlServer.Management.Dac.UI
</span><span> 19</span> <span>{
</span><span> 20</span> <span>    internal class InternalUIHooks
</span><span> 21</span> <span>    {
</span><span> 22</span> <span>        private static class DifferencerTestUtils
</span><span> 23</span> <span>        {
</span><span> 24</span> <span>            private class DacUtils
</span><span> 25</span> <span>            {
</span><span> 26</span>                 <span>public</span> class MetadataObjectComparer : IComparer<span>IMetadataObject<span>></span>
<span> 27</span> <span>                {
</span><span> 28</span>                     <span>public</span> static InternalUIHooks.DifferencerTestUtils.DacUtils.MetadataObjectComparer Instance <span>=</span><span> new InternalUIHooks.DifferencerTestUtils.DacUtils.MetadataObjectComparer();
</span><span> 29</span>                     <span>public</span> <span>int</span><span> Compare(IMetadataObject x, IMetadataObject y)
</span><span> 30</span> <span>                    {
</span><span> 31</span>                         <span>if</span><span> (object.ReferenceEquals(x, y))
</span><span> 32</span> <span>                        {
</span><span> 33</span>                             <span>return</span> <span>0</span><span>;
</span><span> 34</span> <span>                        }
</span><span> 35</span>                         <span>if</span> (x <span>==</span> <span>null</span><span>)
</span><span> 36</span> <span>                        {
</span><span> 37</span>                             <span>return</span> <span>-</span><span>1</span><span>;
</span><span> 38</span> <span>                        }
</span><span> 39</span>                         <span>if</span> (y <span>==</span> <span>null</span><span>)
</span><span> 40</span> <span>                        {
</span><span> 41</span>                             <span>return</span> <span>1</span><span>;
</span><span> 42</span> <span>                        }
</span><span> 43</span>                         IList<span>IMetadataObject<span>></span> hierarchy <span>=</span><span> InternalUIHooks.DifferencerTestUtils.DacUtils.MetadataObjectComparer.GetHierarchy(x);
</span><span> 44</span>                         IList<span>IMetadataObject<span>></span> hierarchy2 <span>=</span><span> InternalUIHooks.DifferencerTestUtils.DacUtils.MetadataObjectComparer.GetHierarchy(y);
</span><span> 45</span>                         <span>int</span> num <span>=</span> <span>0</span><span>;
</span><span> 46</span>                         <span>while</span> (num <span> hierarchy.<span>Count</span> <span>||</span> num <span> hierarchy2.<span>Count</span><span>)
</span><span> 47</span> <span>                        {
</span><span> 48</span>                             <span>if</span> (num <span>>=</span> hierarchy.<span>Count</span><span>)
</span><span> 49</span> <span>                            {
</span><span> 50</span>                                 <span>return</span> <span>-</span><span>1</span><span>;
</span><span> 51</span> <span>                            }
</span><span> 52</span>                             <span>if</span> (num <span>>=</span> hierarchy2.<span>Count</span><span>)
</span><span> 53</span> <span>                            {
</span><span> 54</span>                                 <span>return</span> <span>1</span><span>;
</span><span> 55</span> <span>                            }
</span><span> 56</span>                             <span>int</span> num2 <span>=</span> hierarchy<span>[</span><span>num</span><span>]</span>.TypeInfo().CompareTo(hierarchy2<span>[</span><span>num</span><span>]</span><span>.TypeInfo());
</span><span> 57</span>                             <span>if</span> (num2 <span>!=</span> <span>0</span><span>)
</span><span> 58</span> <span>                            {
</span><span> 59</span>                                 <span>return</span><span> num2;
</span><span> 60</span> <span>                            }
</span><span> 61</span>                             <span>int</span> num3 <span>=</span> StringComparer.Ordinal.Compare(hierarchy<span>[</span><span>num</span><span>]</span>.Name, hierarchy2<span>[</span><span>num</span><span>]</span><span>.Name);
</span><span> 62</span>                             <span>if</span> (num3 <span>!=</span> <span>0</span><span>)
</span><span> 63</span> <span>                            {
</span><span> 64</span>                                 <span>return</span><span> num3;
</span><span> 65</span> <span>                            }
</span><span> 66</span>                             num<span>++</span><span>;
</span><span> 67</span> <span>                        }
</span><span> 68</span>                         <span>return</span> <span>0</span><span>;
</span><span> 69</span> <span>                    }
</span><span> 70</span>                     private static IList<span>IMetadataObject<span>></span><span> GetHierarchy(IMetadataObject obj)
</span><span> 71</span> <span>                    {
</span><span> 72</span>                         List<span>IMetadataObject<span>></span> list <span>=</span> new List<span>IMetadataObject<span>></span><span>();
</span><span> 73</span>                         <span>for</span> (IMetadataObject metadataObject <span>=</span> obj; metadataObject <span>!=</span> <span>null</span>; metadataObject <span>=</span><span> InternalUIHooks.DifferencerTestUtils.DacUtils.GetParentObjectSafe(metadataObject))
</span><span> 74</span> <span>                        {
</span><span> 75</span>                             list.<span>Add</span><span>(metadataObject);
</span><span> 76</span> <span>                        }
</span><span> 77</span>                         list.<span>Reverse</span><span>();
</span><span> 78</span>                         <span>return</span><span> list;
</span><span> 79</span> <span>                    }
</span><span> 80</span> <span>                }
</span><span> 81</span> <span>                internal static DacType CreateDacFromSql(string sql)
</span><span> 82</span> <span>                {
</span><span> 83</span>                     <span>return</span> InternalUIHooks.DifferencerTestUtils.DacUtils.CreateDacFromSql(sql, new Version("<span>1.1</span>.<span>1.1</span><span>"), string.Empty);
</span><span> 84</span> <span>                }
</span><span> 85</span> <span>                internal static DacType CreateDacFromSql(string sql, Version version, string description)
</span><span> 86</span> <span>                {
</span><span> 87</span>                     DacCompilationUnit dacCompilationUnit <span>=</span><span> new DacCompilationUnit("Dac", version, "SQL_Latin1_General_CP1_CI_AS");
</span><span> 88</span>                     dacCompilationUnit.Description <span>=</span><span> description;
</span><span> 89</span> <span>                    dacCompilationUnit.AddTSqlSourceFile("input.sql", sql);
</span><span> 90</span>                     DacCompilationResult dacCompilationResult <span>=</span><span> dacCompilationUnit.Compile();
</span><span> 91</span>                     List<span>DacCompilationError<span>></span> list <span>=</span> new List<span>DacCompilationError<span>></span><span>(dacCompilationResult.Errors);
</span><span> 92</span>                     <span>if</span> (list.<span>Count</span> <span>!=</span> <span>0</span><span>)
</span><span> 93</span> <span>                    {
</span><span> 94</span> <span>                        InternalUIHooks.DifferencerTestUtils.DacUtils.PrintCompilationResultErrors(dacCompilationResult);
</span><span> 95</span> <span>                    }
</span><span> 96</span>                     <span>return</span><span> InternalUIHooks.DifferencerTestUtils.DacUtils.NormalizeDacType(dacCompilationResult.DacType);
</span><span> 97</span> <span>                }
</span><span> 98</span> <span>                private static DacType NormalizeDacType(DacType dacType)
</span><span> 99</span> <span>                {
</span><span>100</span> <span>                    DacType result;
</span><span>101</span>                     using (MemoryStream memoryStream <span>=</span><span> new MemoryStream())
</span><span>102</span> <span>                    {
</span><span>103</span>                         DacType.<span>Save</span><span>(dacType, memoryStream);
</span><span>104</span>                         memoryStream.Seek(0L, SeekOrigin.<span>Begin</span><span>);
</span><span>105</span>                         result <span>=</span> DacType.<span>Load</span><span>(memoryStream);
</span><span>106</span> <span>                    }
</span><span>107</span>                     <span>return</span><span> result;
</span><span>108</span> <span>                }
</span><span>109</span> <span>                private static void PrintCompilationResultErrors(DacCompilationResult result)
</span><span>110</span> <span>                {
</span><span>111</span>                     List<span>DacCompilationError<span>></span> list <span>=</span> new List<span>DacCompilationError<span>></span><span>(result.Errors);
</span><span>112</span>                     Console.WriteLine("Compilation Result Errors (" <span>+</span> list.<span>Count</span> <span>+</span><span> ")");
</span><span>113</span>                     foreach (DacCompilationError <span>current</span> <span>in</span><span> list)
</span><span>114</span> <span>                    {
</span><span>115</span>                         Console.WriteLine("\t<span>-</span> {<span>0</span>}{<span>1</span>}: " <span>+</span> <span>current</span>.ToString(), <span>current</span>.IsWarning ? "Warning" : "Error", (<span>current</span>.SourceInfo <span>!=</span> <span>null</span>) ? (" " <span>+</span> InternalUIHooks.DifferencerTestUtils.DacUtils.GetLocationString(<span>current</span><span>.SourceInfo)) : "");
</span><span>116</span> <span>                    }
</span><span>117</span> <span>                    Console.WriteLine();
</span><span>118</span> <span>                }
</span><span>119</span> <span>                private static string GetLocationString(SourceInfo sourceInfo)
</span><span>120</span> <span>                {
</span><span>121</span>                     <span>return</span> string.Concat(new object<span>[]</span>
<span>122</span> <span>                    {
</span><span>123</span> <span>                        sourceInfo.Filename, 
</span><span>124</span> <span>                        ":", 
</span><span>125</span> <span>                        sourceInfo.Start.LineNumber, 
</span><span>126</span> <span>                        ",", 
</span><span>127</span> <span>                        sourceInfo.Start.ColumnNumber
</span><span>128</span> <span>                    });
</span><span>129</span> <span>                }
</span><span>130</span>                 <span>public</span><span> static DacType CreateDacFromFile(string fileName)
</span><span>131</span> <span>                {
</span><span>132</span>                     string sql <span>=</span> <span>File</span><span>.ReadAllText(fileName);
</span><span>133</span>                     <span>return</span><span> InternalUIHooks.DifferencerTestUtils.DacUtils.CreateDacFromSql(sql);
</span><span>134</span> <span>                }
</span><span>135</span>                 <span>public</span><span> static DacType CreateDacFromFile(string fileName, Version version, string description)
</span><span>136</span> <span>                {
</span><span>137</span>                     string sql <span>=</span> <span>File</span><span>.ReadAllText(fileName);
</span><span>138</span>                     <span>return</span><span> InternalUIHooks.DifferencerTestUtils.DacUtils.CreateDacFromSql(sql, version, description);
</span><span>139</span> <span>                }
</span><span>140</span>                 <span>public</span><span> static string GetMetadataObjectIdString(IMetadataObject obj)
</span><span>141</span> <span>                {
</span><span>142</span>                     List<span>string<span>></span> list <span>=</span> new List<span>string<span>></span><span>();
</span><span>143</span>                     IMetadataObject metadataObject <span>=</span><span> obj;
</span><span>144</span>                     <span>while</span><span> (true)
</span><span>145</span> <span>                    {
</span><span>146</span>                         TypeInfo typeInfo <span>=</span><span> metadataObject.TypeInfo();
</span><span>147</span>                         string <span>text</span> <span>=</span> typeInfo.Name.<span>Substring</span>(<span>1</span><span>);
</span><span>148</span>                         string item <span>=</span> string.Format(CultureInfo.InvariantCulture, "{<span>0</span>}{<span>1</span>}", new object<span>[]</span>
<span>149</span> <span>                        {
</span><span>150</span>                             <span>text</span><span>, 
</span><span>151</span>                             (!(metadataObject <span>is</span> IServer)) ? ("<span>[</span><span>" + metadataObject.Name.Replace("</span><span>]</span>", "]]") <span>+</span><span> "]") : string.Empty
</span><span>152</span> <span>                        });
</span><span>153</span>                         list.<span>Add</span><span>(item);
</span><span>154</span>                         <span>if</span> (metadataObject <span>is</span><span> IServer)
</span><span>155</span> <span>                        {
</span><span>156</span>                             <span>break</span><span>;
</span><span>157</span> <span>                        }
</span><span>158</span>                         metadataObject <span>=</span><span> InternalUIHooks.DifferencerTestUtils.DacUtils.GetParentObject(metadataObject);
</span><span>159</span> <span>                    }
</span><span>160</span>                     list.<span>Reverse</span><span>();
</span><span>161</span>                     <span>return</span> string.<span>Join</span>("<span>/</span><span>", list.ToArray());
</span><span>162</span> <span>                }
</span><span>163</span>                 <span>public</span><span> static string GetMetadataObjectTypeString(IMetadataObject obj)
</span><span>164</span> <span>                {
</span><span>165</span>                     <span>return</span> obj.TypeInfo().Name.<span>Substring</span>(<span>1</span><span>);
</span><span>166</span> <span>                }
</span><span>167</span>                 <span>public</span><span> static IMetadataObject GetParentObject(IMetadataObject obj)
</span><span>168</span> <span>                {
</span><span>169</span>                     MetadataTypeInfo metadataTypeInfo <span>=</span><span> obj.TypeInfo();
</span><span>170</span>                     MetadataPropertyInfo parentProperty <span>=</span><span> metadataTypeInfo.ParentProperty;
</span><span>171</span>                     object propertyValue <span>=</span><span> MetadataUtils.GetPropertyValue(obj, metadataTypeInfo, parentProperty);
</span><span>172</span>                     <span>return</span><span> (IMetadataObject)propertyValue;
</span><span>173</span> <span>                }
</span><span>174</span>                 <span>public</span><span> static IMetadataObject GetParentObjectSafe(IMetadataObject obj)
</span><span>175</span> <span>                {
</span><span>176</span>                     MetadataTypeInfo metadataTypeInfo <span>=</span><span> obj.TypeInfo();
</span><span>177</span>                     MetadataPropertyInfo parentProperty <span>=</span><span> metadataTypeInfo.ParentProperty;
</span><span>178</span>                     <span>if</span> (parentProperty <span>==</span> <span>null</span><span>)
</span><span>179</span> <span>                    {
</span><span>180</span>                         <span>return</span> <span>null</span><span>;
</span><span>181</span> <span>                    }
</span><span>182</span>                     object propertyValue <span>=</span><span> MetadataUtils.GetPropertyValue(obj, metadataTypeInfo, parentProperty);
</span><span>183</span>                     <span>return</span><span> (IMetadataObject)propertyValue;
</span><span>184</span> <span>                }
</span><span>185</span>                 <span>public</span><span> static void WriteObject(XmlWriter writer, object value, bool writeDefinition)
</span><span>186</span> <span>                {
</span><span>187</span>                     Type type <span>=</span> (value <span>!=</span> <span>null</span>) ? value.GetType() : <span>null</span><span>;
</span><span>188</span>                     <span>if</span> (value <span>==</span> <span>null</span><span>)
</span><span>189</span> <span>                    {
</span><span>190</span>                         writer.WriteAttributeString("<span>isNull</span><span>", true.ToString());
</span><span>191</span>                         <span>return</span><span>;
</span><span>192</span> <span>                    }
</span><span>193</span>                     <span>if</span> (type.IsPrimitive <span>||</span> type.IsEnum <span>||</span> type <span>==</span><span> typeof(string))
</span><span>194</span> <span>                    {
</span><span>195</span> <span>                        writer.WriteString(value.ToString());
</span><span>196</span>                         <span>return</span><span>;
</span><span>197</span> <span>                    }
</span><span>198</span>                     <span>if</span> (type <span>==</span><span> typeof(IdentityColumnInfo))
</span><span>199</span> <span>                    {
</span><span>200</span> <span>                        writer.WriteStartElement("Increment");
</span><span>201</span> <span>                        InternalUIHooks.DifferencerTestUtils.DacUtils.WriteObject(writer, ((IdentityColumnInfo)value).Increment, true);
</span><span>202</span> <span>                        writer.WriteEndElement();
</span><span>203</span> <span>                        writer.WriteStartElement("Seed");
</span><span>204</span> <span>                        InternalUIHooks.DifferencerTestUtils.DacUtils.WriteObject(writer, ((IdentityColumnInfo)value).Seed, true);
</span><span>205</span> <span>                        writer.WriteEndElement();
</span><span>206</span>                         <span>return</span><span>;
</span><span>207</span> <span>                    }
</span><span>208</span>                     <span>if</span> (type <span>==</span><span> typeof(ComputedColumnInfo))
</span><span>209</span> <span>                    {
</span><span>210</span> <span>                        writer.WriteStartElement("IsPersisted");
</span><span>211</span> <span>                        InternalUIHooks.DifferencerTestUtils.DacUtils.WriteObject(writer, ((ComputedColumnInfo)value).IsPersisted, true);
</span><span>212</span> <span>                        writer.WriteEndElement();
</span><span>213</span>                         writer.WriteStartElement("<span>Text</span><span>");
</span><span>214</span>                         InternalUIHooks.DifferencerTestUtils.DacUtils.WriteObject(writer, ((ComputedColumnInfo)value).<span>Text</span><span>, true);
</span><span>215</span> <span>                        writer.WriteEndElement();
</span><span>216</span>                         <span>return</span><span>;
</span><span>217</span> <span>                    }
</span><span>218</span>                     <span>if</span> (type <span>==</span><span> typeof(DataTypeSpec))
</span><span>219</span> <span>                    {
</span><span>220</span> <span>                        writer.WriteString(((DataTypeSpec)value).SqlDataType.ToString());
</span><span>221</span>                         <span>return</span><span>;
</span><span>222</span> <span>                    }
</span><span>223</span>                     <span>if</span> (type <span>==</span><span> typeof(CollationInfo))
</span><span>224</span> <span>                    {
</span><span>225</span> <span>                        writer.WriteStartElement("CollationInfo");
</span><span>226</span> <span>                        InternalUIHooks.DifferencerTestUtils.DacUtils.WriteObject(writer, ((CollationInfo)value).Name, true);
</span><span>227</span> <span>                        writer.WriteEndElement();
</span><span>228</span>                         <span>return</span><span>;
</span><span>229</span> <span>                    }
</span><span>230</span>                     <span>if</span> (value <span>is</span><span> ISystemClrDataType)
</span><span>231</span> <span>                    {
</span><span>232</span> <span>                        writer.WriteStartElement("ISystemClrDataType");
</span><span>233</span> <span>                        InternalUIHooks.DifferencerTestUtils.DacUtils.WriteObject(writer, ((ISystemClrDataType)value).Name, true);
</span><span>234</span> <span>                        writer.WriteEndElement();
</span><span>235</span>                         <span>return</span><span>;
</span><span>236</span> <span>                    }
</span><span>237</span>                     <span>if</span> (value <span>is</span><span> IMetadataObject)
</span><span>238</span> <span>                    {
</span><span>239</span>                         IMetadataObject obj <span>=</span><span> (IMetadataObject)value;
</span><span>240</span>                         MetadataTypeInfo metadataTypeInfo <span>=</span><span> obj.TypeInfo();
</span><span>241</span>                         <span>if</span> (metadataTypeInfo.IsValue <span>||</span> (metadataTypeInfo.IsReference <span>&&</span><span> writeDefinition))
</span><span>242</span> <span>                        {
</span><span>243</span> <span>                            writer.WriteStartElement(InternalUIHooks.DifferencerTestUtils.DacUtils.GetMetadataObjectTypeString(obj));
</span><span>244</span>                             foreach (MetadataPropertyInfo <span>current</span> <span>in</span><span> metadataTypeInfo.InstanceProperties)
</span><span>245</span> <span>                            {
</span><span>246</span>                                 object propertyValue <span>=</span> MetadataUtils.GetPropertyValue(obj, metadataTypeInfo, <span>current</span><span>);
</span><span>247</span>                                 writer.WriteStartElement(<span>current</span><span>.Name);
</span><span>248</span>                                 InternalUIHooks.DifferencerTestUtils.DacUtils.WriteObject(writer, propertyValue, writeDefinition <span>&&</span> <span>current</span>.PropertyType <span>==</span><span> PropertyType.Child);
</span><span>249</span> <span>                                writer.WriteEndElement();
</span><span>250</span> <span>                            }
</span><span>251</span> <span>                            writer.WriteEndElement();
</span><span>252</span>                             <span>return</span><span>;
</span><span>253</span> <span>                        }
</span><span>254</span>                         <span>if</span><span> (metadataTypeInfo.IsReference)
</span><span>255</span> <span>                        {
</span><span>256</span> <span>                            writer.WriteAttributeString("id", InternalUIHooks.DifferencerTestUtils.DacUtils.GetMetadataObjectIdString(obj));
</span><span>257</span>                             <span>return</span><span>;
</span><span>258</span> <span>                        }
</span><span>259</span> <span>                    }
</span><span>260</span>                     <span>else</span>
<span>261</span> <span>                    {
</span><span>262</span>                         <span>if</span> (value <span>is</span><span> IEnumerable)
</span><span>263</span> <span>                        {
</span><span>264</span>                             foreach (object current2 <span>in</span><span> (IEnumerable)value)
</span><span>265</span> <span>                            {
</span><span>266</span>                                 string localName <span>=</span> (current2 <span>is</span><span> IMetadataObject) ? InternalUIHooks.DifferencerTestUtils.DacUtils.GetMetadataObjectTypeString((IMetadataObject)current2) : "Item";
</span><span>267</span> <span>                                writer.WriteStartElement(localName);
</span><span>268</span> <span>                                InternalUIHooks.DifferencerTestUtils.DacUtils.WriteObject(writer, current2, writeDefinition);
</span><span>269</span> <span>                                writer.WriteEndElement();
</span><span>270</span> <span>                            }
</span><span>271</span> <span>                        }
</span><span>272</span> <span>                    }
</span><span>273</span> <span>                }
</span><span>274</span> <span>            }
</span><span>275</span>             <span>public</span><span> static void WriteChangeResult(XmlWriter writer, ChangeResult changeResult)
</span><span>276</span> <span>            {
</span><span>277</span> <span>                writer.WriteStartElement("ChangeResult");
</span><span>278</span> <span>                writer.WriteStartElement("CreatedObjects");
</span><span>279</span> <span>                InternalUIHooks.DifferencerTestUtils.WriteObjectRefs(writer, changeResult.CreatedObjects);
</span><span>280</span> <span>                writer.WriteEndElement();
</span><span>281</span> <span>                writer.WriteStartElement("DeletedObjects");
</span><span>282</span> <span>                InternalUIHooks.DifferencerTestUtils.WriteObjectRefs(writer, changeResult.DeletedObjects);
</span><span>283</span> <span>                writer.WriteEndElement();
</span><span>284</span> <span>                writer.WriteStartElement("ModifiedObjects");
</span><span>285</span>                 InternalUIHooks.DifferencerTestUtils.WriteModifiedObjects(writer, changeResult.SourceModifiedObjects.<span>Values</span><span>);
</span><span>286</span> <span>                writer.WriteEndElement();
</span><span>287</span> <span>                writer.WriteEndElement();
</span><span>288</span> <span>            }
</span><span>289</span>             <span>public</span> static void WriteModifiedObjects(XmlWriter writer, IEnumerable<span>ObjectDifference<span>></span><span> objectDifferenceCollection)
</span><span>290</span> <span>            {
</span><span>291</span>                 List<span>ObjectDifference<span>></span> list <span>=</span> objectDifferenceCollection.ToList<span>ObjectDifference<span>></span><span>();
</span><span>292</span>                 list.Sort((ObjectDifference x, ObjectDifference y) <span>=></span> InternalUIHooks.DifferencerTestUtils.DacUtils.MetadataObjectComparer.Instance.Compare(x.ChangedObjectSource, y.ChangedObjectSource) <span>*</span> <span>2</span> <span>+</span><span> InternalUIHooks.DifferencerTestUtils.DacUtils.MetadataObjectComparer.Instance.Compare(x.ChangedObjectTarget, y.ChangedObjectTarget));
</span><span>293</span> <span>                list.ForEach(delegate(ObjectDifference diff)
</span><span>294</span> <span>                {
</span><span>295</span> <span>                    InternalUIHooks.DifferencerTestUtils.WriteObjectDifference(writer, diff);
</span><span>296</span> <span>                }
</span><span>297</span> <span>                );
</span><span>298</span> <span>            }
</span><span>299</span>             <span>public</span><span> static void WriteObjectDifference(XmlWriter writer, ObjectDifference objectDifference)
</span><span>300</span> <span>            {
</span><span>301</span> <span>                writer.WriteStartElement(InternalUIHooks.DifferencerTestUtils.DacUtils.GetMetadataObjectTypeString(objectDifference.ChangedObjectSource));
</span><span>302</span> <span>                writer.WriteStartElement("ChangedObjectSource");
</span><span>303</span> <span>                writer.WriteAttributeString("Id", InternalUIHooks.DifferencerTestUtils.DacUtils.GetMetadataObjectIdString(objectDifference.ChangedObjectSource));
</span><span>304</span> <span>                writer.WriteEndElement();
</span><span>305</span> <span>                writer.WriteStartElement("ChangedObjectTarget");
</span><span>306</span> <span>                writer.WriteAttributeString("Id", InternalUIHooks.DifferencerTestUtils.DacUtils.GetMetadataObjectIdString(objectDifference.ChangedObjectTarget));
</span><span>307</span> <span>                writer.WriteEndElement();
</span><span>308</span> <span>                writer.WriteStartElement("Properties");
</span><span>309</span>                 List<span>PropertyDifference<span>></span> list <span>=</span><span> (
</span><span>310</span>                     <span>from</span> p <span>in</span> objectDifference.PropertyDifferences.<span>Values</span>
<span>311</span> <span>                    orderby p.Name
</span><span>312</span>                     <span>select</span> p).ToList<span>PropertyDifference<span>></span><span>();
</span><span>313</span> <span>                list.ForEach(delegate(PropertyDifference p)
</span><span>314</span> <span>                {
</span><span>315</span> <span>                    InternalUIHooks.DifferencerTestUtils.WritePropertyDifference(writer, p);
</span><span>316</span> <span>                }
</span><span>317</span> <span>                );
</span><span>318</span> <span>                writer.WriteEndElement();
</span><span>319</span> <span>                writer.WriteEndElement();
</span><span>320</span> <span>            }
</span><span>321</span>             <span>public</span><span> static void WritePropertyDifference(XmlWriter writer, PropertyDifference propertyDifference)
</span><span>322</span> <span>            {
</span><span>323</span> <span>                writer.WriteStartElement(propertyDifference.Name);
</span><span>324</span>                 <span>if</span> (propertyDifference <span>is</span><span> OrderedCollectionDifference)
</span><span>325</span> <span>                {
</span><span>326</span>                     OrderedCollectionDifference orderedCollectionDifference <span>=</span> propertyDifference <span>as</span><span> OrderedCollectionDifference;
</span><span>327</span>                     using (IEnumerator<span>OrderedScalarDifference<span>></span> enumerator <span>=</span><span> orderedCollectionDifference.OrderDifferences.GetEnumerator())
</span><span>328</span> <span>                    {
</span><span>329</span>                         <span>while</span><span> (enumerator.MoveNext())
</span><span>330</span> <span>                        {
</span><span>331</span>                             OrderedScalarDifference <span>current</span> <span>=</span> enumerator.<span>Current</span><span>;
</span><span>332</span>                             writer.WriteStartElement(InternalUIHooks.DifferencerTestUtils.DacUtils.GetMetadataObjectTypeString((IMetadataObject)<span>current</span><span>.SourceValue));
</span><span>333</span>                             writer.WriteAttributeString("sourceIndex", <span>current</span><span>.SourceIndex.ToString(CultureInfo.InvariantCulture));
</span><span>334</span>                             writer.WriteAttributeString("targetIndex", <span>current</span><span>.TargetIndex.ToString(CultureInfo.InvariantCulture));
</span><span>335</span> <span>                            writer.WriteStartElement("SourceValue");
</span><span>336</span>                             InternalUIHooks.DifferencerTestUtils.DacUtils.WriteObject(writer, <span>current</span><span>.SourceValue, false);
</span><span>337</span> <span>                            writer.WriteEndElement();
</span><span>338</span> <span>                            writer.WriteStartElement("TargetValue");
</span><span>339</span>                             InternalUIHooks.DifferencerTestUtils.DacUtils.WriteObject(writer, <span>current</span><span>.TargetValue, false);
</span><span>340</span> <span>                            writer.WriteEndElement();
</span><span>341</span> <span>                            writer.WriteEndElement();
</span><span>342</span> <span>                        }
</span><span>343</span>                         <span>goto</span><span> IL_12E;
</span><span>344</span> <span>                    }
</span><span>345</span> <span>                }
</span><span>346</span>                 <span>if</span> (propertyDifference <span>is</span><span> ScalarDifference)
</span><span>347</span> <span>                {
</span><span>348</span>                     ScalarDifference scalarDifference <span>=</span> propertyDifference <span>as</span><span> ScalarDifference;
</span><span>349</span> <span>                    writer.WriteStartElement("SourceValue");
</span><span>350</span> <span>                    InternalUIHooks.DifferencerTestUtils.DacUtils.WriteObject(writer, scalarDifference.SourceValue, false);
</span><span>351</span> <span>                    writer.WriteEndElement();
</span><span>352</span> <span>                    writer.WriteStartElement("TargetValue");
</span><span>353</span> <span>                    InternalUIHooks.DifferencerTestUtils.DacUtils.WriteObject(writer, scalarDifference.TargetValue, false);
</span><span>354</span> <span>                    writer.WriteEndElement();
</span><span>355</span> <span>                }
</span><span>356</span> <span>                IL_12E:
</span><span>357</span> <span>                writer.WriteEndElement();
</span><span>358</span> <span>            }
</span><span>359</span>             <span>public</span> static void WriteObjectRefs(XmlWriter writer, IEnumerable<span>IMetadataObject<span>></span><span> objectCollection)
</span><span>360</span> <span>            {
</span><span>361</span>                 List<span>IMetadataObject<span>></span> list <span>=</span> objectCollection.ToList<span>IMetadataObject<span>></span><span>();
</span><span>362</span> <span>                list.Sort(InternalUIHooks.DifferencerTestUtils.DacUtils.MetadataObjectComparer.Instance);
</span><span>363</span>                 foreach (IMetadataObject <span>current</span> <span>in</span><span> list)
</span><span>364</span> <span>                {
</span><span>365</span>                     writer.WriteStartElement(InternalUIHooks.DifferencerTestUtils.DacUtils.GetMetadataObjectTypeString(<span>current</span><span>));
</span><span>366</span>                     InternalUIHooks.DifferencerTestUtils.DacUtils.WriteObject(writer, <span>current</span><span>, false);
</span><span>367</span> <span>                    writer.WriteEndElement();
</span><span>368</span> <span>                }
</span><span>369</span> <span>            }
</span><span>370</span>             <span>public</span><span> static bool IsChangeResultDrift(ChangeResult changeResult)
</span><span>371</span> <span>            {
</span><span>372</span>                 bool flag <span>=</span> changeResult.CreatedObjects.<span>Count</span><span>IMetadataObject<span>></span>() <span>!=</span> <span>0</span> <span>||</span> changeResult.DeletedObjects.<span>Count</span><span>IMetadataObject<span>></span>() <span>!=</span> <span>0</span><span>;
</span><span>373</span>                 foreach (ObjectDifference <span>current</span> <span>in</span> changeResult.SourceModifiedObjects.<span>Values</span><span>)
</span><span>374</span> <span>                {
</span><span>375</span>                     flag <span>=</span> (!(<span>current</span>.ChangedObjectSource <span>is</span> IConstraint) <span>||</span> (flag <span>|</span> InternalUIHooks.DifferencerTestUtils.IsConstraintDifferenceDrift(<span>current</span><span>)));
</span><span>376</span> <span>                }
</span><span>377</span>                 <span>return</span><span> flag;
</span><span>378</span> <span>            }
</span><span>379</span> <span>            private static bool IsConstraintDifferenceDrift(ObjectDifference objectDifference)
</span><span>380</span> <span>            {
</span><span>381</span>                 bool result <span>=</span><span> false;
</span><span>382</span>                 foreach (PropertyDifference <span>current</span> <span>in</span> objectDifference.PropertyDifferences.<span>Values</span><span>)
</span><span>383</span> <span>                {
</span><span>384</span>                     <span>if</span> (<span>current</span>.Name <span>==</span><span> "IsChecked")
</span><span>385</span> <span>                    {
</span><span>386</span>                         <span>if</span> (!InternalUIHooks.DifferencerTestUtils.IsNotForReplicationConstraint((IConstraint)objectDifference.ChangedObjectSource) <span>&&</span><span> !InternalUIHooks.DifferencerTestUtils.IsNotForReplicationConstraint((IConstraint)objectDifference.ChangedObjectTarget))
</span><span>387</span> <span>                        {
</span><span>388</span>                             result <span>=</span><span> true;
</span><span>389</span> <span>                        }
</span><span>390</span> <span>                    }
</span><span>391</span>                     <span>else</span>
<span>392</span> <span>                    {
</span><span>393</span>                         result <span>=</span><span> true;
</span><span>394</span> <span>                    }
</span><span>395</span> <span>                }
</span><span>396</span>                 <span>return</span><span> result;
</span><span>397</span> <span>            }
</span><span>398</span>             private static bool IsNotForReplicationConstraint(IConstraint <span>constraint</span><span>)
</span><span>399</span> <span>            {
</span><span>400</span> <span>                bool result;
</span><span>401</span>                 switch (<span>constraint</span><span>.Type)
</span><span>402</span> <span>                {
</span><span>403</span>                     <span>case</span> ConstraintType.<span>Check</span><span>:
</span><span>404</span> <span>                    {
</span><span>405</span>                         result <span>=</span> ((ICheckConstraint)<span>constraint</span><span>).NotForReplication;
</span><span>406</span>                         <span>break</span><span>;
</span><span>407</span> <span>                    }
</span><span>408</span>                     <span>case</span><span> ConstraintType.ForeignKey:
</span><span>409</span> <span>                    {
</span><span>410</span>                         result <span>=</span> ((IForeignKeyConstraint)<span>constraint</span><span>).NotForReplication;
</span><span>411</span>                         <span>break</span><span>;
</span><span>412</span> <span>                    }
</span><span>413</span>                     <span>case</span><span> ConstraintType.PrimaryKey:
</span><span>414</span>                     <span>case</span> ConstraintType.<span>Unique</span><span>:
</span><span>415</span> <span>                    {
</span><span>416</span>                         result <span>=</span><span> false;
</span><span>417</span>                         <span>break</span><span>;
</span><span>418</span> <span>                    }
</span><span>419</span>                     <span>default</span><span>:
</span><span>420</span> <span>                    {
</span><span>421</span>                         result <span>=</span><span> false;
</span><span>422</span>                         <span>break</span><span>;
</span><span>423</span> <span>                    }
</span><span>424</span> <span>                }
</span><span>425</span>                 <span>return</span><span> result;
</span><span>426</span> <span>            }
</span><span>427</span> <span>        }
</span><span>428</span>         <span>public</span> const string DacTypeName <span>=</span><span> "Dac";
</span><span>429</span>         <span>public</span> const string DefaultCollation <span>=</span><span> "SQL_Latin1_General_CP1_CI_AS";
</span><span>430</span>         <span>public</span><span> event TextUpdateHandler ScriptUpdate
</span><span>431</span> <span>        {
</span><span>432</span>             <span>[</span><span>MethodImpl(MethodImplOptions.Synchronized)</span><span>]</span>
<span>433</span>             <span>add</span>
<span>434</span> <span>            {
</span><span>435</span>                 this.ScriptUpdate <span>=</span><span> (TextUpdateHandler)Delegate.Combine(this.ScriptUpdate, value);
</span><span>436</span> <span>            }
</span><span>437</span>             <span>[</span><span>MethodImpl(MethodImplOptions.Synchronized)</span><span>]</span>
<span>438</span> <span>            remove
</span><span>439</span> <span>            {
</span><span>440</span>                 this.ScriptUpdate <span>=</span><span> (TextUpdateHandler)Delegate.Remove(this.ScriptUpdate, value);
</span><span>441</span> <span>            }
</span><span>442</span> <span>        }
</span><span>443</span>         <span>public</span><span> event TextUpdateHandler ModelUpdate
</span><span>444</span> <span>        {
</span><span>445</span>             <span>[</span><span>MethodImpl(MethodImplOptions.Synchronized)</span><span>]</span>
<span>446</span>             <span>add</span>
<span>447</span> <span>            {
</span><span>448</span>                 this.ModelUpdate <span>=</span><span> (TextUpdateHandler)Delegate.Combine(this.ModelUpdate, value);
</span><span>449</span> <span>            }
</span><span>450</span>             <span>[</span><span>MethodImpl(MethodImplOptions.Synchronized)</span><span>]</span>
<span>451</span> <span>            remove
</span><span>452</span> <span>            {
</span><span>453</span>                 this.ModelUpdate <span>=</span><span> (TextUpdateHandler)Delegate.Remove(this.ModelUpdate, value);
</span><span>454</span> <span>            }
</span><span>455</span> <span>        }
</span><span>456</span>         <span>public</span><span> event TextUpdateHandler ActionUpdate
</span><span>457</span> <span>        {
</span><span>458</span>             <span>[</span><span>MethodImpl(MethodImplOptions.Synchronized)</span><span>]</span>
<span>459</span>             <span>add</span>
<span>460</span> <span>            {
</span><span>461</span>                 this.ActionUpdate <span>=</span><span> (TextUpdateHandler)Delegate.Combine(this.ActionUpdate, value);
</span><span>462</span> <span>            }
</span><span>463</span>             <span>[</span><span>MethodImpl(MethodImplOptions.Synchronized)</span><span>]</span>
<span>464</span> <span>            remove
</span><span>465</span> <span>            {
</span><span>466</span>                 this.ActionUpdate <span>=</span><span> (TextUpdateHandler)Delegate.Remove(this.ActionUpdate, value);
</span><span>467</span> <span>            }
</span><span>468</span> <span>        }
</span><span>469</span>         <span>public</span><span> DacType CreateDacFromSql(string sql)
</span><span>470</span> <span>        {
</span><span>471</span>             <span>return</span> this.CreateDacFromSql(sql, new Version("<span>1.1</span>.<span>1.1</span><span>"), string.Empty);
</span><span>472</span> <span>        }
</span><span>473</span>         <span>public</span><span> DacType CreateDacFromSql(string sql, Version version, string description)
</span><span>474</span> <span>        {
</span><span>475</span>             DacCompilationUnit dacCompilationUnit <span>=</span><span> new DacCompilationUnit("Dac", version, "SQL_Latin1_General_CP1_CI_AS");
</span><span>476</span>             dacCompilationUnit.Description <span>=</span><span> description;
</span><span>477</span> <span>            dacCompilationUnit.AddTSqlSourceFile("input.sql", sql);
</span><span>478</span>             DacCompilationResult dacCompilationResult <span>=</span><span> dacCompilationUnit.Compile();
</span><span>479</span>             List<span>DacCompilationError<span>></span> list <span>=</span> new List<span>DacCompilationError<span>></span><span>(dacCompilationResult.Errors);
</span><span>480</span>             <span>if</span> (list.<span>Count</span> <span>!=</span> <span>0</span><span>)
</span><span>481</span> <span>            {
</span><span>482</span>                 StringBuilder stringBuilder <span>=</span><span> new StringBuilder();
</span><span>483</span>                 stringBuilder.Append("<span>***</span>COMPILE ERROR<span>***</span><span>");
</span><span>484</span> <span>                stringBuilder.Append(Environment.NewLine);
</span><span>485</span>                 foreach (DacCompilationError <span>current</span> <span>in</span><span> list)
</span><span>486</span> <span>                {
</span><span>487</span>                     stringBuilder.Append(<span>current</span><span>.Message);
</span><span>488</span> <span>                    stringBuilder.Append(Environment.NewLine);
</span><span>489</span> <span>                }
</span><span>490</span> <span>                this.OnScriptUpdate(stringBuilder.ToString());
</span><span>491</span>                 <span>return</span> <span>null</span><span>;
</span><span>492</span> <span>            }
</span><span>493</span>             <span>return</span><span> this.NormalizeDacType(dacCompilationResult.DacType);
</span><span>494</span> <span>        }
</span><span>495</span>         <span>public</span><span> void CompareSQLScripts(string sourceSQL, string targetSQL, bool isAzure)
</span><span>496</span> <span>        {
</span><span>497</span> <span>            this.OnActionUpdate("Building Source SQL DAC");
</span><span>498</span>             DacType dacType <span>=</span> this.CreateDacFromSql(sourceSQL, new Version("<span>1.1</span>.<span>1.1</span><span>"), "V1");
</span><span>499</span> <span>            this.OnActionUpdate("Building Target SQL DAC");
</span><span>500</span>             DacType dacType2 <span>=</span> this.CreateDacFromSql(targetSQL, new Version("<span>2.2</span>.<span>2.2</span><span>"), "V2");
</span><span>501</span> <span>            this.OnActionUpdate("Preparing Incremental Upgrade Script");
</span><span>502</span>             PrepareIncrementalUpgradeScriptStep prepareIncrementalUpgradeScriptStep <span>=</span><span> new PrepareIncrementalUpgradeScriptStep(dacType.Definition, "Dac", dacType2.Definition, "Dac", this.GetDefaultDifferencerFilter(), isAzure ? ScriptTarget.SqlAzure : ScriptTarget.Sql100, false);
</span><span>503</span>             prepareIncrementalUpgradeScriptStep.<span>Execute</span><span>();
</span><span>504</span>             IEnumerable<span>ActionGroup<span>></span> incrementalUpgradeActionGroups <span>=</span><span> prepareIncrementalUpgradeScriptStep.GetIncrementalUpgradeActionGroups();
</span><span>505</span>             foreach (ActionGroup <span>current</span> <span>in</span><span> incrementalUpgradeActionGroups)
</span><span>506</span> <span>            {
</span><span>507</span>                 ActionGroupScripter actionGroupScripter <span>=</span> <span>current</span><span>.GetActionGroupScripter(ScriptTarget.Sql100);
</span><span>508</span> <span>                this.OnActionUpdate(actionGroupScripter.Description);
</span><span>509</span> <span>            }
</span><span>510</span> <span>            this.OnScriptUpdate(prepareIncrementalUpgradeScriptStep.CompleteScript);
</span><span>511</span>             this.OnModelUpdate(this.GetChangeResultOutput(dacType.Definition.Databases<span>[</span><span>"Dac"</span><span>]</span>, dacType2.Definition.Databases<span>[</span><span>"Dac"</span><span>]</span><span>));
</span><span>512</span> <span>        }
</span><span>513</span>         <span>public</span><span> string GetDatabaseScript(ServerConnection serverConnection, string databaseName)
</span><span>514</span> <span>        {
</span><span>515</span>             string input <span>=</span><span> string.Empty;
</span><span>516</span> <span>            try
</span><span>517</span> <span>            {
</span><span>518</span>                 IServer offlineDatabase <span>=</span><span> InternalUIHooks.GetOfflineDatabase(serverConnection, databaseName);
</span><span>519</span>                 PrepareDeploymentScriptStep prepareDeploymentScriptStep <span>=</span><span> new PrepareDeploymentScriptStep(offlineDatabase, databaseName, new TargetEngineInfo(serverConnection), true);
</span><span>520</span>                 prepareDeploymentScriptStep.<span>Execute</span><span>();
</span><span>521</span>                 input <span>=</span><span> prepareDeploymentScriptStep.CompleteDatabaseObjectsScript;
</span><span>522</span> <span>            }
</span><span>523</span> <span>            catch (Exception exception)
</span><span>524</span> <span>            {
</span><span>525</span> <span>                InternalUIHooks.ThrowExceptionMessage(exception);
</span><span>526</span> <span>            }
</span><span>527</span>             Regex regex <span>=</span> new Regex("<span>^</span><span>RAISERROR</span>.<span>*</span>\\nGO.<span>*</span><span>\\n", RegexOptions.Multiline);
</span><span>528</span>             <span>return</span> regex.<span>Replace</span><span>(input, Environment.NewLine);
</span><span>529</span> <span>        }
</span><span>530</span>         <span>public</span><span> void Apply(ServerConnection serverConnection, string sql, string databaseName)
</span><span>531</span> <span>        {
</span><span>532</span>             <span>Database</span> <span>database</span> <span>=</span> new Server(serverConnection).Databases<span>[</span><span>databaseName</span><span>]</span><span>;
</span><span>533</span> <span>            try
</span><span>534</span> <span>            {
</span><span>535</span>                 string <span>text</span> <span>=</span><span> "Dac";
</span><span>536</span>                 DacStore dacStore <span>=</span><span> new DacStore(serverConnection);
</span><span>537</span>                 DacDefinition dacDefinition <span>=</span> new DacDefinition(dacStore, <span>text</span><span>, databaseName);
</span><span>538</span>                 <span>if</span><span> (!dacDefinition.IsRegistered)
</span><span>539</span> <span>                {
</span><span>540</span>                     <span>text</span> <span>=</span><span> "Dac";
</span><span>541</span> <span>                    dacDefinition.Register();
</span><span>542</span> <span>                }
</span><span>543</span>                 <span>else</span>
<span>544</span> <span>                {
</span><span>545</span>                     <span>text</span> <span>=</span> dacStore.DacInstances<span>[</span><span>databaseName</span><span>]</span><span>.Type.Name;
</span><span>546</span> <span>                }
</span><span>547</span>                 DacCompilationUnit dacCompilationUnit <span>=</span> new DacCompilationUnit(<span>text</span>, new Version(<span>1</span>, <span>0</span>), <span>database</span><span>.Collation);
</span><span>548</span> <span>                dacCompilationUnit.AddTSqlSourceFile("input.sql", sql);
</span><span>549</span>                 DacCompilationResult dacCompilationResult <span>=</span><span> dacCompilationUnit.Compile();
</span><span>550</span>                 <span>if</span> (dacCompilationResult.Errors.<span>Count</span><span>DacCompilationError<span>></span>() <span>></span> <span>0</span><span>)
</span><span>551</span> <span>                {
</span><span>552</span>                     StringBuilder stringBuilder <span>=</span><span> new StringBuilder();
</span><span>553</span>                     foreach (DacCompilationError <span>current</span> <span>in</span><span> dacCompilationResult.Errors)
</span><span>554</span> <span>                    {
</span><span>555</span>                         stringBuilder.Append(<span>current</span><span>.Message);
</span><span>556</span> <span>                    }
</span><span>557</span> <span>                    throw new Exception(stringBuilder.ToString());
</span><span>558</span> <span>                }
</span><span>559</span>                 DacType dacType <span>=</span><span> dacCompilationResult.DacType;
</span><span>560</span>                 IServer offlineDatabase <span>=</span><span> InternalUIHooks.GetOfflineDatabase(serverConnection, databaseName);
</span><span>561</span>                 this.OnModelUpdate(this.GetChangeResultOutput(offlineDatabase.Databases<span>[</span><span>databaseName</span><span>]</span>, dacType.Definition.Databases<span>[</span><span>text</span><span>]</span><span>));
</span><span>562</span> <span>                this.OnScriptUpdate(dacStore.GetIncrementalUpgradeScript(databaseName, dacType));
</span><span>563</span> <span>                dacStore.IncrementalUpgrade(databaseName, dacType, new DacUpgradeOptions());
</span><span>564</span> <span>            }
</span><span>565</span> <span>            catch (Exception exception)
</span><span>566</span> <span>            {
</span><span>567</span> <span>                InternalUIHooks.ThrowExceptionMessage(exception);
</span><span>568</span> <span>            }
</span><span>569</span> <span>        }
</span><span>570</span> <span>        private string GetChangeResultOutput(IDatabase sourceDatabase, IDatabase targetDatabase)
</span><span>571</span> <span>        {
</span><span>572</span>             ChangeResult changeResult <span>=</span><span> Differencer.Compare(sourceDatabase, targetDatabase, this.GetDefaultDifferencerFilter());
</span><span>573</span>             StringBuilder stringBuilder <span>=</span><span> new StringBuilder();
</span><span>574</span>             using (XmlWriter xmlWriter <span>=</span> XmlWriter.<span>Create</span><span>(stringBuilder, new XmlWriterSettings
</span><span>575</span> <span>            {
</span><span>576</span>                 Indent <span>=</span><span> true, 
</span><span>577</span>                 IndentChars <span>=</span><span> "   ", 
</span><span>578</span>                 NewLineChars <span>=</span><span> Environment.NewLine, 
</span><span>579</span>                 CloseOutput <span>=</span><span> false
</span><span>580</span> <span>            }))
</span><span>581</span> <span>            {
</span><span>582</span> <span>                InternalUIHooks.DifferencerTestUtils.WriteChangeResult(xmlWriter, changeResult);
</span><span>583</span> <span>            }
</span><span>584</span>             <span>return</span><span> stringBuilder.ToString();
</span><span>585</span> <span>        }
</span><span>586</span> <span>        private static void ThrowExceptionMessage(Exception exception)
</span><span>587</span> <span>        {
</span><span>588</span>             StringBuilder stringBuilder <span>=</span><span> new StringBuilder();
</span><span>589</span>             <span>while</span> (exception <span>!=</span> <span>null</span><span>)
</span><span>590</span> <span>            {
</span><span>591</span>                 stringBuilder.AppendLine("<span>-></span>" <span>+</span><span> exception.Message);
</span><span>592</span>                 exception <span>=</span><span> exception.InnerException;
</span><span>593</span> <span>            }
</span><span>594</span> <span>            throw new Exception(string</span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span>

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