Bug 153412 Change parameter type will cause preview fail
Description: Change parameter type will cause preview fail Steps to reproduce: 1. New a report paramter, string, text-box, default value is abc. 2. Drag the parameter to Layout and preview. 3. Change the parameter's type to integer, list-box, add a value 1 4. Preview Expected result: No errors. Actual result: The value "abc" is invalid with the type "integer".
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/context/ViewerAttributeBean.java
try
						{
							
							paramValueObj = ParameterValidationUtil.validate(
									parameter.getDataType( ), parameter
											.getPattern( ), paramValueObj
											.toString( ), locale );
						}
						catch ( ValidationValueException e1 )
						{
							
							paramValueObj = ParameterValidationUtil
									.validate(
											parameter.getDataType( ),
											ParameterValidationUtil.DEFAULT_DATETIME_FORMAT,
											paramValueObj.toString( ) );
						}
					}
					params.put( paramName, paramValueObj );
				}
				catch ( ValidationValueException e )
				{
					
					if ( ParameterAccessor.SERVLET_PATH_RUN
							.equalsIgnoreCase( request.getServletPath( ) ) )
					{
						this.exception = e;
						break;
					}
				}