]]>SmartClient涓瑿riteria 鍜?AdvancedCriteria鐨勭悊瑙?/title><link>http://www.tkk7.com/spy1988/archive/2011/10/24/361929.html</link><dc:creator>椋庢竻鎵?/dc:creator><author>椋庢竻鎵?/author><pubDate>Mon, 24 Oct 2011 15:08:00 GMT</pubDate><guid>http://www.tkk7.com/spy1988/archive/2011/10/24/361929.html</guid><wfw:comment>http://www.tkk7.com/spy1988/comments/361929.html</wfw:comment><comments>http://www.tkk7.com/spy1988/archive/2011/10/24/361929.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.tkk7.com/spy1988/comments/commentRss/361929.html</wfw:commentRss><trackback:ping>http://www.tkk7.com/spy1988/services/trackbacks/361929.html</trackback:ping><description><![CDATA[鏃墮棿涓嶆棭浜嗭紝灝卞皯鍐欎竴浜涗簡銆?br /><div><p>Criteria for selecting only a matching set of records from a DataSource. Criteria can be applied on the client and server. Unless configured otherwise, criteria will generally be applied client-side by <a href="http://localhost:8888/isomorphic/system/reference/SmartClient_Reference.html">ResultSet</a>s via <a href="http://localhost:8888/isomorphic/system/reference/SmartClient_Reference.html">ResultSet.applyFilter()</a>. </p><p> Client- and server-side systems built into SmartClient understand two criteria formats by default: simple key-value pairs (Criteria) or the <a href="http://localhost:8888/isomorphic/system/reference/SmartClient_Reference.html">AdvancedCriteria</a> format. </p><p> Simple key-value Criteria are represented via a JavaScript Object where each property specifies the name and required value for a field. Multiple legal values for a field can be provided as an Array. For example: </p><pre><span style="color: red;"> var criteria = { field1 : "value1", field2 : ["value2", "value3"] } </span></pre> Would select all records where field1 has value "value1" and where field2 has <em>either</em> "value2" or "value3". When writing custom client and server-side filtering logic, criteria must be a JavaScript Object but the properties of that Object can contain whatever data you want. When<br /> sent to the SmartClient server, the Java representation of the criteria is described <a href="http://localhost:8888/isomorphic/system/reference/SmartClient_Reference.html">here</a>. When sent to other servers, the <a href="http://localhost:8888/isomorphic/system/reference/SmartClient_Reference.html">operationBinding.dataProtocol</a> affects the format.</div><br />鏍煎紡鐩稿綋綆鍗曘?span style="color: red;">娉ㄦ剰鍓嶉潰瀛楁field1錛屾槸涓嶉渶瑕佸皢寮曞彿鐨?/span>.<br /><div><p>AdvancedCriteria is a format for representing search criteria which may include operators on field values such as "less than", or may include sub-clauses such as several criteria applied to fields joined by an "OR" operator. </p><p> SmartClient DataSources can use AdvancedCriteria to search a list of <a href="http://localhost:8888/isomorphic/system/reference/SmartClient_Reference.html">Record</a>s, and the SmartClient Java Server can translate AdvancedCriteria to either SQL or Hibernate queries (<strong style="color: red;">Note:</strong><span style="color: red;"> The server-side AdvancedCriteria handling feature is only available with the </span><strong style="color: red;">Power</strong><span style="color: red;"> and </span><strong style="color: red;">Enterprise</strong><span style="color: red;"> Editions of SmartClient; the Pro Edition is limited to ordinary criteria handling on the server side).鍙儨Power鐗堝拰Enterprise鐗堥兘鑰佽吹鑰佽吹鐨勶紝浼佷笟鐗堢殑閮芥湁鎸塁PU鍗栫殑浜嗭紝鏅曞掋?/span></p><p> If the entire dataset is cached locally, SmartClient can perform AdvancedCriteria filtering on the client, avoiding a server call. </p><p> An AdvancedCriteria is an ordinary JavaScript object which can be created directly with JavaScript literal notation. For example: </p><pre><div>var advancedCriteria = {<br /> _constructor:"AdvancedCriteria",<br /> operator:"and",<br /> criteria:[<br /> // this is a Criterion<br /> { fieldName:"salary", operator:"lessThan", value:"80000" },<br /> { operator:"or", criteria:[<br /> { fieldName:"title", operator:"iContains", value:"Manager" },<br /> { fieldName:"reports", operator:"notNull" }<br /> ] <br /> }<br /> ]<br /> }</div></pre> An AdvancedCriteria is in effect a <a href="http://localhost:8888/isomorphic/system/reference/SmartClient_Reference.html">Criterion</a> that has been marked with _constructor:"AdvancedCriteria" to mark it as complete criteria. </div><br /><img src ="http://www.tkk7.com/spy1988/aggbug/361929.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.tkk7.com/spy1988/" target="_blank">椋庢竻鎵?/a> 2011-10-24 23:08 <a href="http://www.tkk7.com/spy1988/archive/2011/10/24/361929.html#Feedback" target="_blank" style="text-decoration:none;">鍙戣〃璇勮</a></div>]]></description></item><item><title>testhttp://www.tkk7.com/spy1988/archive/2011/10/19/361606.html椋庢竻鎵?/dc:creator>椋庢竻鎵?/author>Wed, 19 Oct 2011 11:45:00 GMThttp://www.tkk7.com/spy1988/archive/2011/10/19/361606.htmlhttp://www.tkk7.com/spy1988/comments/361606.htmlhttp://www.tkk7.com/spy1988/archive/2011/10/19/361606.html#Feedback1http://www.tkk7.com/spy1988/comments/commentRss/361606.htmlhttp://www.tkk7.com/spy1988/services/trackbacks/361606.html