Suppressing column headings

[tmg]

We are trying to get column headings for certain export types to show only on the first page. When executing the code below, we get the following error:

net.sf.jasperreports.engine.JRException: Report design not valid :

1. Variable not found : $V{PAGE_NUMBER}

 

Code:

		JRDesignBand bandDetail = new JRDesignBand();
		bandDetail.setHeight(20);
		
		JRDesignBand bandHeader = new JRDesignBand();
		bandHeader.setHeight(60);
		
		//suppress column headings except for the following export types
		if (mExportType != "PDF"«»)
		{
			JRDesignExpression mExp = new JRDesignExpression();
			JRDesignExpressionChunk c1 = new JRDesignExpressionChunk(); 
			c1.setText("new Boolean("«»); 
			c1.setType(JRExpressionChunk.TYPE_TEXT); 
			mExp.addChunk(c1); 
			JRDesignExpressionChunk c2 = new JRDesignExpressionChunk(); 
			c2.setText("$V{PAGE_NUMBER}"«»); 
			c2.setType(JRExpressionChunk.TYPE_VARIABLE); 
			mExp.addChunk(c2); 
			JRDesignExpressionChunk c3 = new JRDesignExpressionChunk(); 
			c3.setText(".intValue()==1)"«»); 
			c3.setType(JRExpressionChunk.TYPE_TEXT); 
			mExp.addChunk(c3); 
			mExp.setValueClass(Boolean.class);
			bandHeader.setPrintWhenExpression(mExp);
		
		}

 

Any help would be greatly appreciated.

[lucianc]

The variable expression chunk text should only contain the variable name:

Code:

c2.setText("PAGE_NUMBER"«»); 
c2.setType(JRExpressionChunk.TYPE_VARIABLE);

 

HTH,

Lucian

[tmg]

Thanks so much Lucian,

It worked!!