java - How to use result set in JasperResports as data source? -


here snippet of jasperreport developed uses static query embedded in report.

<jasperreport xmlns="http://jasperreports.sourceforge.net/jasperreports" xmlns:xsi="http://www.w3.org/2001/xmlschema-instance" xsi:schemalocation="http://jasperreports.sourceforge.net/jasperreports http://jasperreports.sourceforge.net/xsd/jasperreport.xsd" name="report" pagewidth="842" pageheight="595" orientation="landscape" columnwidth="802" leftmargin="20" rightmargin="20" topmargin="20" bottommargin="20" isfloatcolumnfooter="true">      <property name="ireport.zoom" value="1.0"/>      <property name="ireport.x" value="129"/>      <property name="ireport.y" value="0"/>      <parameter name="lp" class="java.lang.integer"/>      <parameter name="all_price" class="java.lang.integer"/>      <parameter name="all_amount" class="java.lang.integer"/>      <parameter name="all_total_price" class="java.lang.integer"/>      <querystring>           <![cdata[select sanaf_number,sanaf,sales_id,sales.sanaf_id,customer_name,  price, total_price, addad, wahda, required_amount sanaf,sales  (sales.export='0')and(sanaf.sanaf_id=sales.sanaf_id) limit $p{lp}]]>      </querystring>      <field name="sales_id" class="java.lang.integer"/>      <field name="sanaf_id" class="java.lang.integer"/>

now need use resultset instead of static query. code use execute report below/

void showresports(){   try{     // originalexportoriginalexport      string reportname ="";      if(export.equalsignorecase("1")){       reportname = "originalexport.jasper";     } else if(export.equalsignorecase("0")){       reportname = "exportreport4.jasper";     }      inputstream in =getclass().getresourceasstream(reportname);      if(in==null|| connection==null) return ;      hashmap parametermap = new hashmap();     parametermap.put("lp", new integer(selectednumber));      if(export.equalsignorecase("0")){       int all_price=databasemanager.counttotalpriceforimport(selectednumber);       int all_amount=databasemanager.countamountforimport(selectednumber);       int all_total_price=databasemanager.counttotalprice(selectednumber);        parametermap.put("all_price",new integer(all_price));       parametermap.put("all_amount",new integer(all_amount));       parametermap.put("all_total_price",new integer(all_total_price));     } else if(export.equalsignorecase("1")){       int all_requiredamount=databasemanager.countallrequiredamount(selectednumber);       int all_given_amount=databasemanager.countallgivenamount(selectednumber);       parametermap.put("all_requiredamount",new integer(all_requiredamount));       parametermap.put("all_given_amount",new integer(all_given_amount));     }      jasperprint jp = jasperfillmanager.fillreport(in, parametermap, connection);     system.out.println("object of jasper print created");      jrviewer jv = new jrviewer(jp);     //insert viewer jframe make showable     jframe jf = new jframe();     jf.getcontentpane().add(jv);     jf.validate();     jf.setvisible(true);     jf.setsize(new dimension(800,600));     jf.setlocation(300,100);     jf.setdefaultcloseoperation(jframe.dispose_on_close);     }catch(exception e){     e.printstacktrace();   } }// showreports

if result set contains same fields query have embedded in report, need remove querystring report , change:

jasperfillmanager.fillreport(in, parametermap, connection);

to

jasperfillmanager.fillreport(in, parametermap, new jrresultsetdatasource(resultset));

where resultset result set data.

the complication comes in if result set has different names fields, or different fields altogether. in case need adjust field names in report also.


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