Bug 153378 [Regression]Label text won't show up when the text key is not found
Steps to reproduce: 1.Add a label, set text to "aaa" 2.Add a resource file "a" to the report, add a text key "k1" which is not in the a.properties to the label 3.Preview in Web Viewer Expected result: Label display "aaa" when the text key is not found Actual result: Nothing in preview
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/util/ParameterValidationUtil.java
{
		if ( StringUtil.isBlank( value ) )
			return null;
		
		if ( value.equalsIgnoreCase( BooleanPropertyType.TRUE ) )
			return Boolean.TRUE;
		else if ( value.equalsIgnoreCase( BooleanPropertyType.FALSE ) )
			return Boolean.FALSE;
		
		
		if ( value.equalsIgnoreCase( getMessage( locale,
				BooleanPropertyType.BOOLEAN_TRUE_RESOURCE_KEY ) ) )
		{
			return Boolean.TRUE;
		}
		else if ( value.equalsIgnoreCase( getMessage( locale,
				BooleanPropertyType.BOOLEAN_FALSE_RESOURCE_KEY ) ) )
		{
			return Boolean.FALSE;
		}
		throw new ValidationValueException( value,
				PropertyValueException.DESIGN_EXCEPTION_INVALID_VALUE,
				DesignChoiceConstants.PARAM_TYPE_BOOLEAN );
	}
	/**
	 * Gets the message with the given locale and key.
	 * 
	 * @param locale
	 *            the locale information
	 * @param key