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
import org.eclipse.birt.core.format.DateFormatter;
import org.eclipse.birt.core.format.NumberFormatter;
import org.eclipse.birt.core.format.StringFormatter;
import org.eclipse.birt.report.model.api.elements.DesignChoiceConstants;
import org.eclipse.birt.report.model.api.metadata.PropertyValueException;
import org.eclipse.birt.report.model.api.metadata.ValidationValueException;
import org.eclipse.birt.report.model.i18n.ModelMessages;
import org.eclipse.birt.report.model.metadata.BooleanPropertyType;
import com.ibm.icu.text.DateFormat;
import com.ibm.icu.text.NumberFormat;
import com.ibm.icu.util.ULocale;
import com.ibm.icu.util.UResourceBundle;
/**
 * Validates the parameter value with the given data type and format pattern
 * string. This util class can validate the parameter of the following types:
 * 
 * <ul>
 * <li><code>PARAM_TYPE_DATETIME</code></li>
 * <li><code>PARAM_TYPE_FLOAT</code></li>
 * <li><code>PARAM_TYPE_DECIMAL</code></li>
 * <li><code>PARAM_TYPE_BOOLEAN</code></li>
 * <li><code>PARAM_TYPE_STRING</code></li>
 * <li><code>PARAM_TYPE_INTEGER</code></li>
 * </ul>
 * 
 * @see org.eclipse.birt.report.model.api.elements.DesignChoiceConstants
 */
public class ParameterValidationUtil
{
	/**