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📁 C#高级编程(第三版),顶死你们。。 。up
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        29.6.3  事务处理的结果
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                        29.6.3  事务处理的结果
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                    2006-10-13 14:41:00
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                        <div style='float:left;width:49%'>·<a href='100165758.htm'>29.6  事务处理</a></div><div style='float:right;width:49%'>·<a href='100165759.htm'>29.6.1  ACID属性</a></div><div style='float:left;width:49%'>·<a href='100165760.htm'>29.6.2  事务处理的属性</a></div><div style='float:right;width:49%'>·<a href='100165762.htm'>29.6.4  示例应用程序(1)</a></div><div style='float:left;width:49%'>·<a href='100165763.htm'>29.6.4  示例应用程序(2)</a></div><div style='float:right;width:49%'>·<a href='100165764.htm'>29.7  小结</a></div></div>
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                <div id="text"> <link href="css.css" rel="stylesheet" type="text/css" /><h3 style='margin-top:8.15pt;margin-right:0cm;FTEL:8.15pt;margin-left:
0cm'><span lang=EN-US>29.6.3&nbsp; </span><span style='font-family:黑体'>事务处理的结果</span></h3>

<p class=MsoNormal><span style='font-family:宋体'>设置环境的</span><span lang=EN-US>consistent</span><span
style='font-family:宋体'>和</span><span lang=EN-US>done</span><span
style='font-family:宋体'>位会影响事务处理。如果</span><span lang=EN-US>consistent</span><span
style='font-family:宋体'>位设置为</span><span lang=EN-US>true</span><span
style='font-family:宋体'>，就表示组件对事务处理的结果很满意。如果所有参与事务处理的组件都成功了，事务处理就完成了。如果</span><span
lang=EN-US>consistent</span><span style='font-family:宋体'>位设置为</span><span
lang=EN-US>false</span><span style='font-family:宋体'>，则组件对事务处理的结果不满意，在启动事务处理的根对象完成时，就会中止事务处理。如果设置了</span><span
lang=EN-US>done</span><span style='font-family:宋体'>位，就可以在方法调用完成后释放对象，用下一个方法调用创建新实例。</span></p>

<p class=MsoNormal><span style='font-family:宋体'>使用</span><span lang=EN-US>ContextUtil</span><span
style='font-family:宋体'>类的</span><span lang=EN-US>4</span><span
style='font-family:宋体'>个方法可以设置</span><span lang=EN-US>consistent</span><span
style='font-family:宋体'>和</span><span lang=EN-US>done</span><span
style='font-family:宋体'>位，结果如表</span><span lang=EN-US>29-3</span><span
style='font-family:宋体'>所示。</span></p>

<p class=a5 style='margin-top:8.15pt'><span style='font-family:黑体'>表</span><span
lang=EN-US>&nbsp; 29-3</span></p>

<table class=MsoNormalTable border=1 cellspacing=0 cellpadding=0
 style='border-collapse:collapse;border:none'>
 <tr>
  <td width=196 valign=top style='width:147.2pt;border:solid windowtext 1.0pt;
  border-left:none;padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=a5 style='margin-top:0cm'><span lang=EN-US>ContextUtil</span><span
  style='font-family:黑体'>方法</span></p>
  </td>
  <td width=196 valign=top style='width:147.2pt;border:solid windowtext 1.0pt;
  border-left:none;padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=a5 style='margin-top:0cm'><span lang=EN-US>consistent</span><span
  style='font-family:黑体'>位</span></p>
  </td>
  <td width=196 valign=top style='width:147.25pt;border-top:solid windowtext 1.0pt;
  border-left:none;border-bottom:solid windowtext 1.0pt;border-right:none;
  padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=a5 style='margin-top:0cm'><span lang=EN-US>done</span><span
  style='font-family:黑体'>位</span></p>
  </td>
 </tr>
 <tr>
  <td width=196 valign=top style='width:147.2pt;border-top:none;border-left:
  none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
  padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=a4 style='margin-left:10.7pt'><span lang=EN-US>SetComplete</span></p>
  </td>
  <td width=196 valign=top style='width:147.2pt;border-top:none;border-left:
  none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
  padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=a4 style='margin-left:10.7pt'><span lang=EN-US>true</span></p>
  </td>
  <td width=196 valign=top style='width:147.25pt;border:none;border-bottom:
  solid windowtext 1.0pt;padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=a4 style='margin-left:10.7pt'><span lang=EN-US>true</span></p>
  </td>
 </tr>
 <tr>
  <td width=196 valign=top style='width:147.2pt;border-top:none;border-left:
  none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
  padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=a4 style='margin-left:10.7pt'><span lang=EN-US>SetAbort</span></p>
  </td>
  <td width=196 valign=top style='width:147.2pt;border-top:none;border-left:
  none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
  padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=a4 style='margin-left:10.7pt'><span lang=EN-US>false</span></p>
  </td>
  <td width=196 valign=top style='width:147.25pt;border:none;border-bottom:
  solid windowtext 1.0pt;padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=a4 style='margin-left:10.7pt'><span lang=EN-US>true</span></p>
  </td>
 </tr>
 <tr>
  <td width=196 valign=top style='width:147.2pt;border-top:none;border-left:
  none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
  padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=a4 style='margin-left:10.7pt'><span lang=EN-US>EnableCommit</span></p>
  </td>
  <td width=196 valign=top style='width:147.2pt;border-top:none;border-left:
  none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
  padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=a4 style='margin-left:10.7pt'><span lang=EN-US>true</span></p>
  </td>
  <td width=196 valign=top style='width:147.25pt;border:none;border-bottom:
  solid windowtext 1.0pt;padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=a4 style='margin-left:10.7pt'><span lang=EN-US>false</span></p>
  </td>
 </tr>
 <tr>
  <td width=196 valign=top style='width:147.2pt;border-top:none;border-left:
  none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
  padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=a4 style='margin-left:10.7pt'><span lang=EN-US>DisableCommit</span></p>
  </td>
  <td width=196 valign=top style='width:147.2pt;border-top:none;border-left:
  none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
  padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=a4 style='margin-left:10.7pt'><span lang=EN-US>false</span></p>
  </td>
  <td width=196 valign=top style='width:147.25pt;border:none;border-bottom:
  solid windowtext 1.0pt;padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=a4 style='margin-left:10.7pt'><span lang=EN-US>false</span></p>
  </td>
 </tr>
</table>



<p class=MsoNormal><span style='font-family:宋体'>在</span><span lang=EN-US>.NET</span><span
style='font-family:宋体'>中，还可以对方法应用属性</span><span lang=EN-US>[AutoComplete]</span><span
style='font-family:宋体'>，来设置</span><span lang=EN-US>consistent</span><span
style='font-family:宋体'>和</span><span lang=EN-US>done</span><span
style='font-family:宋体'>位，而不是调用</span><span lang=EN-US>ContextUtil</span><span
style='font-family:宋体'>方法。使用这个属性，如果方法成功，就自动调用</span><span lang=EN-US>ContextUtil.SetComplete()</span><span
style='font-family:宋体'>方法。如果方法失败，并抛出一个异常，则通过属性</span><span lang=EN-US>[AutoComplete]</span><span
style='font-family:宋体'>调用</span><span lang=EN-US>ContextUtil. SetAbort()</span><span
style='font-family:宋体'>方法。</span></p>

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