list - How can I invoke *this* on a JRBeanCollectionDataSource? -


i passing list of images report. want render inside list object in report.

i have used jasperreports lists before , i'm aware can reference each field of element in list using $f{} tag, how can reference element of list itself?

basically use $f{this}, or $f{self}. there such thing?

yes, can use alias _this.

the quote jasperreports ultimate guide:

special field mapping can used access current javabean object itself. thus, when field uses _this description or name, data source return current javabean object field value. useful when report needs extract current object data not correspond property follows javabeans standards (for instance, data returned method takes arguments), or when current object needs passed argument method called in 1 of report expressions.

the sample of using _this

the snippet of jrxml file:

<subdataset name="dataset1">     <field name="city" class="java.lang.string">         <fielddescription><![cdata[_this]]></fielddescription>     </field> </subdataset>

the snippet of javabean:

public class addressbean {      private string city;     private integer id;     private personbean person;      public addressbean getaddress() {         return this;     }      public string getcity() {         return city;     }      public integer getid() {         return id;     }

the jasperreports ultimate guide here.

you can read answer genericjon on how access root element of datasource in jasperreports question.


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