How to add multiple columnProperties (fields) to ColumnBuilder?

I am using the below code to display the column properties in jasper report. But I am not able to get the three properties values to single column. Is there any possibility to get three of the properties to display using "," in a single column.

The file contains the below code:

DynamicReportBuilder drb = new DynamicReportBuilder();
drb.setTitle("Transaction List Export")
                .setSubtitle("This report was generated at " + new Date())
                .setDetailHeight(15)                    // defines the height for each record of the report
                .setPrintColumnNames(true)
                .setIgnorePagination(true)              // for Excel, we may don't want pagination, just a plain list
                .setMargins(30, 20, 0, 15)              // define the margin space for each side (top, bottom, left and right)
                .setDefaultStyles(titleStyle, subtitleStyle, headerStyle, detailStyle)
                .setColumnsPerPage(1, 10)
                .setUseFullPageWidth(true)              // we tell the report to use the full width of the page. this resizes
                                                        // the columns width proportionally to meat the page width.
                .setAllowDetailSplit(false)
                .setReportName("Client List");
AbstractColumn columnClientLocation = ColumnBuilder.getNew()
                .setColumnProperty("ClientAddress", String.class.getName()+Constants.COMMA)
               .setColumnProperty("ClientCity",String.class.getName()+Constants.COMMA)
                setColumnProperty("ClientPostalCode",String.class.getName())
                .setTitle(messages.getMessage(locale, "group.terminalinfo"))
                .setWidth(80)
                .build();
                width = width + 80;

            /**
             * We add the columns to the report (through the builder) in the
             * order we want them to appear
             */
            if(myContainer.getServiceProvider().equalsIgnoreCase("GOOG")) {
                drb.addColumn(columnTransactionActivity)
                    .addColumn(columnClientLocation);
            }

I am unable to get the values of ClientAddress,ClientCity and ClientPostalCode in a single column of jasper report .

I would like to display all these three properties in a single column.

Solution

You can not use "," you need to use CustomExpression to achieve desired result

Example

First add your fields to report, so they can be accessed

drb.addField("ClientAddress", String.class.getName());
drb.addField("ClientCity", String.class.getName());
drb.addField("ClientPostalCode", String.class.getName());

Then create the AbstractColumn with a CustomExpression

AbstractColumn columnClientLocation = ColumnBuilder.getNew().setCustomExpression(
    return new CustomExpression() {
        public Object evaluate(Map fields, Map variables, Map parameters) {
            String clientAddress = (String) fields.get("ClientAddress");
            String clientCity = (String) fields.get("ClientCity");
            String clientPostalCode = (String) fields.get("ClientPostalCode");
            return clientAddress + ", " + clientCity + ", " + clientPostalCode;
        }

        public String getClassName() {
            return String.class.getName();
        }
    }
).build();