How to use

iterateElement

method

in

org.thymeleaf.processor.element.IElementTagStructureHandler

@Override
protected void doProcess(
    final ITemplateContext context,
    final IProcessableElementTag tag,
    final AttributeName attributeName, final String attributeValue,
    final IElementTagStructureHandler structureHandler) {
  final Each each = EachUtils.parseEach(context, attributeValue);
  final IStandardExpression iterVarExpr = each.getIterVar();
  final Object iterVarValue = iterVarExpr.execute(context);
  final IStandardExpression statusVarExpr = each.getStatusVar();
  final Object statusVarValue;
  if (statusVarExpr != null) {
    statusVarValue = statusVarExpr.execute(context);
  } else {
    statusVarValue = null; // Will provoke the default behaviour: iterVarValue + 'Stat'
  }
  final IStandardExpression iterableExpr = each.getIterable();
  final Object iteratedValue = iterableExpr.execute(context);
  final String iterVarName = (iterVarValue == null? null : iterVarValue.toString());
  if (StringUtils.isEmptyOrWhitespace(iterVarName)) {
    throw new TemplateProcessingException(
        "Iteration variable name expression evaluated as null: \"" + iterVarExpr + "\"");
  }
  final String statusVarName = (statusVarValue == null? null : statusVarValue.toString());
  if (statusVarExpr != null && StringUtils.isEmptyOrWhitespace(statusVarName)) {
    throw new TemplateProcessingException(
        "Status variable name expression evaluated as null or empty: \"" + statusVarExpr + "\"");
  }
  structureHandler.iterateElement(iterVarName, statusVarName, iteratedValue);
}