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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Hello,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I am new to Java and Drools and have a doubt regarding the sequence of rules’ execution as stated below :- <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><b>Scenario:- </b>I have a scenario wherein I have to apply multiple rules on multiple columns coming in a file. To simulate that I created a 2-D array as follows <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New";color:black'>String[][] data = {</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New";color:black'> {</span><span style='font-size:10.0pt;font-family:"Courier New";color:#2A00FF'>"1791"</span><span style='font-size:10.0pt;font-family:"Courier New";color:black'>,</span><span style='font-size:10.0pt;font-family:"Courier New";color:#2A00FF'>"8459625"</span><span style='font-size:10.0pt;font-family:"Courier New";color:black'>,</span><span style='font-size:10.0pt;font-family:"Courier New";color:#2A00FF'>"78458745"</span><span style='font-size:10.0pt;font-family:"Courier New";color:black'>,</span><span style='font-size:10.0pt;font-family:"Courier New";color:#2A00FF'>"20120610"</span><span style='font-size:10.0pt;font-family:"Courier New";color:black'>,</span><span style='font-size:10.0pt;font-family:"Courier New";color:#2A00FF'>"20120610" </span><span style='font-size:10.0pt;font-family:"Courier New";color:black'>}, </span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New";color:black'> {</span><span style='font-size:10.0pt;font-family:"Courier New";color:#2A00FF'>"1792"</span><span style='font-size:10.0pt;font-family:"Courier New";color:black'>,</span><span style='font-size:10.0pt;font-family:"Courier New";color:#2A00FF'>"8459623"</span><span style='font-size:10.0pt;font-family:"Courier New";color:black'>,</span><span style='font-size:10.0pt;font-family:"Courier New";color:#2A00FF'>"78458745"</span><span style='font-size:10.0pt;font-family:"Courier New";color:black'>,</span><span style='font-size:10.0pt;font-family:"Courier New";color:#2A00FF'>"20120610"</span><span style='font-size:10.0pt;font-family:"Courier New";color:black'>,</span><span style='font-size:10.0pt;font-family:"Courier New";color:#2A00FF'>"20120610" </span><span style='font-size:10.0pt;font-family:"Courier New";color:black'>}, </span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New";color:black'> {</span><span style='font-size:10.0pt;font-family:"Courier New";color:#2A00FF'>"1793"</span><span style='font-size:10.0pt;font-family:"Courier New";color:black'>,</span><span style='font-size:10.0pt;font-family:"Courier New";color:#2A00FF'>"8459624"</span><span style='font-size:10.0pt;font-family:"Courier New";color:black'>,</span><span style='font-size:10.0pt;font-family:"Courier New";color:#2A00FF'>"78458745"</span><span style='font-size:10.0pt;font-family:"Courier New";color:black'>,</span><span style='font-size:10.0pt;font-family:"Courier New";color:#2A00FF'>"20120610"</span><span style='font-size:10.0pt;font-family:"Courier New";color:black'>,</span><span style='font-size:10.0pt;font-family:"Courier New";color:#2A00FF'>"20120610" </span><span style='font-size:10.0pt;font-family:"Courier New";color:black'>}, </span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New";color:black'> {</span><span style='font-size:10.0pt;font-family:"Courier New";color:#2A00FF'>"17944"</span><span style='font-size:10.0pt;font-family:"Courier New";color:black'>,</span><span style='font-size:10.0pt;font-family:"Courier New";color:#2A00FF'>"8459626"</span><span style='font-size:10.0pt;font-family:"Courier New";color:black'>,</span><span style='font-size:10.0pt;font-family:"Courier New";color:#2A00FF'>"78458745"</span><span style='font-size:10.0pt;font-family:"Courier New";color:black'>,</span><span style='font-size:10.0pt;font-family:"Courier New";color:#2A00FF'>"20120610"</span><span style='font-size:10.0pt;font-family:"Courier New";color:black'>,</span><span style='font-size:10.0pt;font-family:"Courier New";color:#2A00FF'>"20120610"</span><span style='font-size:10.0pt;font-family:"Courier New";color:black'>}</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New";color:black'> };<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New";color:black'><o:p> </o:p></span></p><p class=MsoNormal>Here each column of corresponds to a member for the following class <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal style='text-autospace:none'><b><span style='font-size:10.0pt;font-family:"Courier New";color:#7F0055'>public</span></b><span style='font-size:10.0pt;font-family:"Courier New";color:black'> </span><b><span style='font-size:10.0pt;font-family:"Courier New";color:#7F0055'>class</span></b><span style='font-size:10.0pt;font-family:"Courier New";color:black'> DailyPLC {</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New";color:black'> </span><b><span style='font-size:10.0pt;font-family:"Courier New";color:#7F0055'>private</span></b><span style='font-size:10.0pt;font-family:"Courier New";color:black'> String </span><span style='font-size:10.0pt;font-family:"Courier New";color:#0000C0'>Id</span><span style='font-size:10.0pt;font-family:"Courier New";color:black'>; </span><span style='font-size:10.0pt;font-family:"Courier New";color:#3F7F5F'>// This value will correspond to data[i][0]</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New";color:black'> </span><b><span style='font-size:10.0pt;font-family:"Courier New";color:#7F0055'>private</span></b><span style='font-size:10.0pt;font-family:"Courier New";color:black'> String </span><span style='font-size:10.0pt;font-family:"Courier New";color:#0000C0'>productCode</span><span style='font-size:10.0pt;font-family:"Courier New";color:black'>; </span><span style='font-size:10.0pt;font-family:"Courier New";color:#3F7F5F'>// This value will correspond to data[i][1]</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New";color:black'> </span><b><span style='font-size:10.0pt;font-family:"Courier New";color:#7F0055'>private</span></b><span style='font-size:10.0pt;font-family:"Courier New";color:black'> String </span><span style='font-size:10.0pt;font-family:"Courier New";color:#0000C0'>customerCode</span><span style='font-size:10.0pt;font-family:"Courier New";color:black'>; </span><span style='font-size:10.0pt;font-family:"Courier New";color:#3F7F5F'>// This value will correspond to data[i][2]</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New";color:black'> </span><b><span style='font-size:10.0pt;font-family:"Courier New";color:#7F0055'>private</span></b><span style='font-size:10.0pt;font-family:"Courier New";color:black'> String </span><span style='font-size:10.0pt;font-family:"Courier New";color:#0000C0'>date1</span><span style='font-size:10.0pt;font-family:"Courier New";color:black'>; </span><span style='font-size:10.0pt;font-family:"Courier New";color:#3F7F5F'>// This value will correspond to data[i][3]</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New";color:black'> </span><b><span style='font-size:10.0pt;font-family:"Courier New";color:#7F0055'>private</span></b><span style='font-size:10.0pt;font-family:"Courier New";color:black'> String </span><span style='font-size:10.0pt;font-family:"Courier New";color:#0000C0'>date2</span><span style='font-size:10.0pt;font-family:"Courier New";color:black'>; </span><span style='font-size:10.0pt;font-family:"Courier New";color:#3F7F5F'>// This value will correspond to data[i][4]</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New";color:black'> </span><b><span style='font-size:10.0pt;font-family:"Courier New";color:#7F0055'>private</span></b><span style='font-size:10.0pt;font-family:"Courier New";color:black'> </span><b><span style='font-size:10.0pt;font-family:"Courier New";color:#7F0055'>int</span></b><span style='font-size:10.0pt;font-family:"Courier New";color:black'> </span><span style='font-size:10.0pt;font-family:"Courier New";color:#0000C0'>rowNumber</span><span style='font-size:10.0pt;font-family:"Courier New";color:black'>; </span><span style='font-size:10.0pt;font-family:"Courier New";color:#3F7F5F'>// The row number to keep a track of row for which the record exists</span><span style='font-size:10.0pt;font-family:"Courier New";color:black'> </span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New";color:black'> </span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New";color:black'> </span><span style='font-size:10.0pt;font-family:"Courier New";color:#3F7F5F'>/*Getters and Setters defined for each of them*/<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>}<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal>I have to perform checks on each of the columns, and the intent is to create all the rules that I need for the entire array and save it in a single drl file. Also, at the execution time, all the rules should be applied – either at once or sequentially – to all the rows of the data.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><b>Approach:- </b> I tried the following<o:p></o:p></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>1.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Created an ArrayList <o:p></o:p></p><p class=MsoListParagraph><span style='font-size:10.0pt;font-family:"Courier New";color:black'>ArrayList<DailyPLC> alPLCArrayList = new ArrayList<DailyPLC>();<o:p></o:p></span></p><p class=MsoListParagraph><o:p> </o:p></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>2.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Iterated over the <span style='font-size:10.0pt;font-family:"Courier New";color:black'>data </span>and stored each row into a field of the object of <span style='font-size:10.0pt;font-family:"Courier New";color:black'>DailyPLC </span>class. <o:p></o:p></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>3.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>For every iteration, added the object into the array list. <o:p></o:p></p><p class=MsoListParagraph><o:p> </o:p></p><p class=MsoListParagraph><span style='font-size:10.0pt;font-family:"Courier New";color:black'>alPLCArrayList.add(plcToday); </span><span style='font-size:10.0pt;font-family:"Courier New";color:#3F7F5F'>// The plcToday is the object of the DailyPLC class<o:p></o:p></span></p><p class=MsoListParagraph><o:p> </o:p></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>4.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>When executing the rules, I am adding all the items of the ArrayList one by one and adding into the Knowledge Session. <o:p></o:p></p><p class=MsoListParagraph style='text-autospace:none'><b><span style='font-size:10.0pt;font-family:"Courier New";color:#7F0055'><o:p> </o:p></span></b></p><p class=MsoListParagraph style='text-autospace:none'><b><span style='font-size:10.0pt;font-family:"Courier New";color:#7F0055'>for</span></b><span style='font-size:10.0pt;font-family:"Courier New";color:black'>(DailyPLC d : alPLCArrayList)</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p><p class=MsoListParagraph style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New";color:black'> {</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p><p class=MsoListParagraph style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New";color:black'> ksession.insert(d); </span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p><p class=MsoListParagraph style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New";color:black'> }</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New";color:black'><o:p> </o:p></span></p><p class=MsoListParagraph><o:p> </o:p></p><p class=MsoNormal><b>Problem Faced :- </b><u>The problem that I faced is that when I do FireAllRules, the rule only validates the last record. The intent is that it should traverse the list and give a result for all the members of the list</u>. <o:p></o:p></p><p class=MsoNormal>Have I missed something here? <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Please assist. Let me know in case you need any more information<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><b>Thanks in Advance,<o:p></o:p></b></p><p class=MsoNormal><b>Amal Gupta<o:p></o:p></b></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>
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