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Small library for Excel generation based on XLS templates
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//package org.jxls.builder.xml;
//
//import org.jxls.area.Area;
//import org.jxls.command.EachCommand;
//import org.jxls.common.AreaRef;
//import org.xml.sax.Attributes;
//
//import ch.qos.logback.core.joran.action.Action;
//import ch.qos.logback.core.joran.spi.ActionException;
//import ch.qos.logback.core.joran.spi.InterpretationContext;
//
///**
// * Builds {@link org.jxls.command.EachCommand} from XML
// *
// * @author Leonid Vysochyn
// */
//public class EachAction extends Action {
//    public static final String ITEMS_ATTR = "items";
//    public static final String VAR_ATTR = "var";
//    public static final String REF_ATTR = "ref";
//    public static final String DIRECTION_ATTR = "dir";
//    public static final String GROUP_BY_ATTR = "groupBy";
//    public static final String GROUP_ORDER_ATTR = "groupOrder";
//    public static final String ORDER_BY_ATTR = "orderBy";
//
//    @Override
//    public void begin(InterpretationContext ic, String name, Attributes attributes) throws ActionException {
//        String items = attributes.getValue(ITEMS_ATTR);
//        String var = attributes.getValue(VAR_ATTR);
//        String ref = attributes.getValue(REF_ATTR);
//        String dir = attributes.getValue(DIRECTION_ATTR);
//        String groupBy = attributes.getValue(GROUP_BY_ATTR); // optional
//        String groupOrder = attributes.getValue(GROUP_ORDER_ATTR); // optional
//        String orderBy = attributes.getValue(ORDER_BY_ATTR); // optional
//        EachCommand.Direction direction;
//        if (items == null || items.length() == 0) {
//            String errMsg = "'items' attribute of 'each' tag is empty";
//            ic.addError(errMsg);
//            throw new IllegalArgumentException(errMsg);
//        }
//        if (ref == null || ref.length() == 0) {
//            String errMsg = "'ref' attribute of 'each' tag is empty";
//            ic.addError(errMsg);
//        }
//        if (dir == null || dir.length() == 0) {
//            direction = EachCommand.Direction.DOWN;
//        } else {
//            try {
//                direction = EachCommand.Direction.valueOf(dir);
//            } catch (IllegalArgumentException e) {
//                String errMsg = "'dir' attribute [" + dir + "] cannot be converted to EachCommand.Direction instance";
//                ic.addError(errMsg);
//                throw new IllegalArgumentException(errMsg);
//            }
//        }
//        EachCommand command = new EachCommand(var, items, direction);
//        command.setGroupBy(groupBy);
//        command.setGroupOrder(groupOrder);
//        command.setOrderBy(orderBy);
//        Object object = ic.peekObject();
//        if (object instanceof Area) {
//            Area area = (Area) object;
//            area.addCommand(new AreaRef(ref), command);
//        } else {
//            String errMsg = "Object [" + object + "] currently at the top of the stack is not an Area";
//            ic.addError(errMsg);
//            throw new IllegalArgumentException(errMsg);
//        }
//        ic.pushObject(command);
//    }
//
//    @Override
//    public void end(InterpretationContext ic, String name) throws ActionException {
//        ic.popObject();
//    }
//}