Including dynamic images in a PDF with BIRT - image

Question

I am trying to use BIRT 2.5.0 to generate a pdf file. BIRT is called from pHp (this is done thanks to JavaBridge and a Tomcat server).
And I am simply trying to create a checkbox, checked under certain conditions.
I looked a bit on the internet and found 2 different ways to do it.
The first way is to play with the Visibility if the field "idclassebillet" (on which I am making the test) has a value of 1. I did it this way :
<image id="9010">
<list-property name="visibility">
<structure>
<property name="format">all</property>
<expression name="valueExpr" type="javascript">row["classEq1"]</expression>
</structure>
</list-property>
<list-property name="boundDataColumns">
<structure>
<property name="name">classEq1</property>
<text-property name="displayName">classEq1</text-property>
<expression name="expression" type="javascript">dataSetRow["idclassebillet"] == 1</expression>
<property name="dataType">boolean</property>
</structure>
</list-property>
<property name="source">embed</property>
<property name="imageName">checkbox_unchecked.png</property>
</image>
But this doesn't work.
So the second solution that I found was to play with a simple URL. This solution is much more convenient, but doesn't work neither. This would looks like that.
<image id="9018">
<property name="source">url</property>
<list-property name="boundDataColumns">
<structure>
<property name="name">classEq1</property>
<text-property name="displayName">classEq1</text-property>
<expression name="expression" type="javascript">dataSetRow["idclassebillet"]</expression>
<property name="dataType">integer</property>
</structure>
</list-property>
<expression name="uri" type="javascript">
if(row["classEq1"] == 1)
"http://my.server.com/checkbox_checked.png"+row["classEq1"];
else
"http://my.server.com/checkbox_unchecked.png"+row["classEq1"];
</expression>
</image>
In both cases, I declare the field "dataSetRow["idfield"]" like that :
<data-sets>
<oda-data-set extensionID="org.eclipse.birt.report.data.oda.jdbc.JdbcSelectDataSet" name="infoBordereau" id="178">
<structure name="cachedMetaData">
<list-property name="resultSet">
...
<structure>
<property name="position">9</property>
<property name="name">idclassebillet</property>
<property name="dataType">integer</property>
</structure>
...
</structure>
<property name="dataSource">GestionBillet</property>
<list-property name="resultSet">
...
<structure>
<property name="position">8</property>
<property name="name">idclassebillet</property>
<property name="nativeName">idclassebillet</property>
<property name="dataType">integer</property>
</structure>
...
</list-property>
....
</oda-data-set>
</data-sets>
I checked that I can access to the content of "idclassebillet". If I simply print it this way, it works fine :
<data id="90060001">
<property name="whiteSpace">nowrap</property>
<property name="dataSet">infoBordereau</property>
<list-property name="boundDataColumns">
<structure>
<property name="name">classEq1</property>
<text-property name="displayName">classEq1</text-property>
<expression name="expression" type="javascript">dataSetRow["idclassebillet"]</expression>
<property name="dataType">integer</property>
</structure>
</list-property>
<property name="resultSetColumn">classEq1</property>
</data>
And whatever the solution I choose to get my "dynamic" images, I always get the same image, whatever the value of "dataSetRow["idclassebillet"]" is.
I have no problem accessing and printing the image. The problem is more to "test" the value of the "idclassebillet" field (ie. how can I access this field ?).
I hope that you understand what I am trying to do. If you have a better solution (and if possible an example of working code), don't hesitate to share ^^ :)
Many thanks,
Raphaël POITTEVIN
NB : At first, I wanted my images to be embedded in the document (this what I use in the first solution), but as this didn't worked, I used an images hosted on http://my.server.com ...

Answer 1

If your objective is to display an unchecked/checked checkbox, have you considered using the Wingdings font with characters 0xA8 and 0xFD or 0xFE?