ViewModelUtils.java 文件源码

/**
 * Helper method for getting the string value of a property from a {@link PropertyValues}
 *
 * @param propertyValues property values instance to pull from
 * @param propertyName name of property whose value should be retrieved
 * @return String value for property or null if property was not found
 */
public static String getStringValFromPVs(PropertyValues propertyValues, String propertyName) {
    String propertyValue = null;

    if ((propertyValues != null) && propertyValues.contains(propertyName)) {
        Object pvValue = propertyValues.getPropertyValue(propertyName).getValue();
        if (pvValue instanceof TypedStringValue) {
            TypedStringValue typedStringValue = (TypedStringValue) pvValue;
            propertyValue = typedStringValue.getValue();
        } else if (pvValue instanceof String) {
            propertyValue = (String) pvValue;
        }
    }

    return propertyValue;
}