Null property value and cannot be resolved to a ty

[fwhorton]

Hello All: I am trying to create a report (environment: Oracle, Hibernate, Spring, iReport). Maybe this is in creating a report 101 but I did not see it. Sorry to write so much but I wanted to be clear.

 

I am selecting from the "project" table and trying create a java.lang.Long field "manager.peopleId" which "manager" is a foriegn key to the "peopleId" field within the "people" table and get a Null property value for 'manager' java.lang.IllegalArgumentException: Null property value for 'manager' when I try to print the field but the report compiles.

 

So I change "manager.peopleId" field expression to:

($F{manager.peopleId}==null

? (new Long(0))

: (new Long(1)))

 

And I still get a Null property value for 'manager' java.lang.IllegalArgumentException: Null property value for 'manager' when I try to print the field but the report compiles.

 

So I delete the "manager.peopleId" field and create a "manager" field with class type com.thesdg.capitalvision.data.org.People, change expression class to java.lang.String, and change the field expression to:

($F{manager}!=null

?$F{manager}.getPersonFirstName() + " "

+ $F{manager}.getPersonLastName()

:"")

 

Now I receive the following Check Expresion Error: Sourced file: inline evaluation of: ``(((com.thesdg.capitalvision.data.org.People)field_manager.getValue())!=null ?(( . . . '' : Class: com.thesdg.capitalvision.data.org.People not found in namespace

com .thesdg .capitalvision .data .org .People

Line: 1

 

I cannot compile the file with the error: Errors compiling C:Documents and SettingsFred WhortonMy DocumentsWorkBenchcapvisWebRootreportsProjectContract.jasper.

net.sf.jasperreports.engine.JRException: Errors were encountered when compiling report expressions class file:

1. com.thesdg.capitalvision.data.org.People cannot be resolved to a type value = (java.lang.Long)((((com.thesdg.capitalvision.data.org.People)field_manager.getValue())!=null

 

But the report now displays the information...

 

Any help is greatly appreciated.

 

 

fw.

[fwhorton]

I figured it out... I created an field "manager" with class type java.lang.Object. Then I created a method toString() within the hibernate class to return the information I was looking for.

 

($F{manager}!=null

? $F{manager}.toString()

:"")