Bug 205782 Excel can't process big data which type is Decimal.
engine/org.eclipse.birt.report.engine.emitter.prototype.excel/src/org/eclipse/birt/report/engine/emitter/excel/Data.java
package org.eclipse.birt.report.engine.emitter.excel;
import java.io.Serializable;
import org.eclipse.birt.report.engine.emitter.excel.layout.Rule;
public class Data implements Serializable, Cloneable