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DynamicJasper (DJ) is an API that hides the complexity of Jasper Reports, it helps developers to save time when designing simple/medium complexity reports generating the layout of the report elements automatically. It creates reports dynamically, defining at runtime the columns, column width (auto width), groups, variables, fonts, charts, crosstabs, sub reports (that can also be dynamic), page size and everything else that you can define at design time. DJ keeps full compatibility with Jasper Reports since it's a tool that helps create reports programmatically in a easy way (it only interferes with the creation of the report design doing the layout of the elements). You can use the classic .jrxml files as templates while the content and layout of the report elements are handled by the DJ API. http://dynamicjasper.com

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package ar.com.fdvs.dj.util;

import ar.com.fdvs.dj.core.DJException;
import ar.com.fdvs.dj.domain.Style;
import net.sf.jasperreports.engine.design.JRDesignStyle;
import org.apache.commons.beanutils.BeanUtils;
import org.apache.commons.beanutils.BeanUtilsBean;
import org.apache.commons.beanutils.PropertyUtils;

import java.beans.PropertyDescriptor;
import java.lang.reflect.Method;
import java.util.Collection;


public class Utils {

	private Utils(){

	}

	/**
	 * Returns true if collection is null or empty
	 * @param col
	 * @return
	 */
	public static boolean isEmpty(Collection col) {
		return col == null || col.isEmpty();

	}

	public static void addNotNull(Collection col, Object obj){
		if (col == null || obj == null)
			return;

		col.add(obj);
	}


	/**
	 * This takes into account objects that breaks the JavaBean convention
	 * and have as getter for Boolean objects an "isXXX" method.
	 * @param dest
	 * @param orig
	 */
	public static void copyProperties(Object dest, Object orig){
		try {
			if (orig != null && dest != null){
				BeanUtils.copyProperties(dest, orig);

				PropertyUtils putils = new PropertyUtils();
	            PropertyDescriptor origDescriptors[] = putils.getPropertyDescriptors(orig);

				for (PropertyDescriptor origDescriptor : origDescriptors) {
					String name = origDescriptor.getName();
					if ("class".equals(name)) {
						continue; // No point in trying to set an object's class
					}

					Class propertyType = origDescriptor.getPropertyType();
					if (!Boolean.class.equals(propertyType) && !(Boolean.class.equals(propertyType)))
						continue;

					if (!putils.isReadable(orig, name)) { //because of bad convention
						Method m = orig.getClass().getMethod("is" + name.substring(0, 1).toUpperCase() + name.substring(1), (Class[]) null);
						Object value = m.invoke(orig, (Object[]) null);

						if (putils.isWriteable(dest, name)) {
							BeanUtilsBean.getInstance().copyProperty(dest, name, value);
						}
					}

				}
			}
		} catch (Exception e) {
			throw new DJException("Could not copy properties for shared object: " + orig +", message: " + e.getMessage(),e);
		}
	}


	public static void main(String[] args) {
		JRDesignStyle s1 = new Style().transform();
		JRDesignStyle s2 = new Style().transform();

		s1.setBold(Boolean.TRUE);
		s1.setItalic(Boolean.TRUE);
		s1.setUnderline(Boolean.TRUE);

		Utils.copyProperties(s2, s1);

		System.out.println(s2.isBold() + " - " + s2.isItalic() + " - " + s2.isUnderline());


	}

	/**
	 * When adding a text to an expression, we have to make sure that the String will not
	 * break JasperReports expression syntax.

	 * For example: if the title text is: November "2009" sales

	 * The double quotes (") must be escaped to \", and in java that would be \\\\\"

	 *
	 * single bars "\" are escaped to "\\"
	 *
	 * To understand better, the expression can be tested in iReport expression editor.
	 * @param text
	 * @return
	 */
	public static String escapeTextForExpression(String text) {
		if (text == null)
			return null;
		text = text.replaceAll("\\\\", "\\\\\\\\");
		text = text.replaceAll("\"", "\\\\\"");
		return text;
	}

	public static JRDesignStyle cloneStyle(JRDesignStyle style){
		return (JRDesignStyle) style.clone(); //only for JR 3.5.1+
//		JRDesignStyle nstyle = new JRDesignStyle();
//		copyProperties(nstyle, style);
//		return nstyle;

	}

    /**
     * Check whether string has been set to
     * something other than "" or null.
     * @param string the String to check
     * @return a boolean indicating whether the string was non-empty (and non-null)
     */
	public static boolean stringSet(String string) {
        return (string != null) && !"".equals(string);
    }


	public static boolean isEmpty(String text) {
		return text == null || "".equals(text.trim());

	}
}