... or in 4.1 the service is injected automatically, so you don't need
the @InjectObject annotation.
Regards,
Norbi
Ryan Cuprak wrote:
D'oh was a simple fix, use service:
@InjectObject("service:tapestry.ognl.ExpressionEvaluator")
On Wednesday, August 16, 2006, at 07:54AM, Ryan Cuprak <[EMAIL PROTECTED]> wrote:
Thanks,
That is much simpler!
For the ExpressionTableColumn I need a ExpressionEvaluator as the last
parameter. I think it is a tapestry service (still digging through the binding
files), thought this would work:
@InjectObject("infrastructure:tapestry.ognl.ExpressionEvaluator")
public abstract ExpressionEvaluator getExpressionEvaluator();
(also tried engine-service)
However I get a nice exception that it can't find the service etc.
-Ryan
On Wednesday, August 16, 2006, at 07:10AM, Robert Zeigler <[EMAIL PROTECTED]>
wrote:
If you want, you don't even have to implement ITableColumnModel.
just do something like:
.html:
<table jwcid="@contrib:Table" source="ognl:theSource"
columns="ognl:columnList"/>
.java:
public List getColumnList() {
List ret = new ArrayList();
String columnId="callPointH";
String columnHeader="Call Point H";
//not that the root of your ognl expression is the current row obj.
String ognlExpression = "callPoinH";
boolean sortable=true;
ret.add(new
ExpressionTableColumn(columnId,columnHeeader,ognlExpression,sortable);
return ret;
}
Ryan Cuprak wrote:
Hello,
I am working creating a table for which the number of columns is dynamic (user can control which columns they want displayed). What is the proper approach for implementing the behavior?
Thus far I created an implementation of ITableColumnModel which then returns the custom set of columns. I initially returned SimpleTableColumn instances but was getting a 'Unable to read OGNL expression '<parsed OGNL expression>' of [EMAIL PROTECTED]/image/bands.tableColumns]: tableColumnRenderer' exception (src below). After getting this exception I thought my approach might be wrong. Looking over the code I was a little puzzled on how my column would extract the values from the model etc. Looking through the contrib:table source I chanced upon 'ExpressionTableColumn'. There are no java docs so I am not quiet sure how it is supposed to be used. From the title I 'think' this would take ognl expressions and retrieve the values from my data model? However, I am not quiet sure how to contruct an instance - where/what do I use for an ExpressionEvaluator?
Page spec:
<component id="bands" type="Contrib:Table">
<binding name="source" value="tableModel"/>
<binding name="columns" value="ognl:tableColumnModel"/>
<binding name="rowsClass" value="beans.evenOdd.next"/>
<binding name="columnsClass" value="literal:title"/>
</component>
My TableColumnModel (only one field, was trying to get it working first..):
public class BandSummaryColumnModel implements ITableColumnModel {
private static final Logger logger =
Logger.getLogger(BandSummaryColumnModel.class);
private Map<String, ITableColumn> _columns;
public BandSummaryColumnModel() {
if(logger.isDebugEnabled()) logger.debug("Instantiating
BandSummaryColumnModel");
_columns = new HashMap<String,ITableColumn>();
_columns.put("callPointH",new
SimpleTableColumn("callPointH","callPointH",true));
}
public int getColumnCount() {
if(logger.isDebugEnabled()) logger.debug("Column count: " +
_columns.size());
return _columns.size();
}
public ITableColumn getColumn(String string) {
if(logger.isDebugEnabled()) logger.debug("Column requested: " + string);
return _columns.get(string);
}
public Iterator getColumns() {
if(logger.isDebugEnabled()) logger.debug("Column iterator requested");
return _columns.entrySet().iterator();
}
}
Thanks!
Ryan
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