public static String concat(
final EObject listOwner,
final EList<? extends IdentifiableLangStringValue> list,
final String filterString,
final String separationString) {
if (filterString == null) {
throw new NullPointerException("language must not be null"); // $NON-NLS-1$
}
String retString = ""; // $NON-NLS-1$
for (final IdentifiableLangStringValue obj : list) {
if (obj != null && passesFilter(filterString.length() == 0 ? null : filterString, obj)) {
String value = obj.getValue();
if (value != null) {
value = value.trim();
if (retString.length() != 0) {
retString += separationString;
}
retString += value;
}
}
}
return retString;
}
private static boolean passesFilter(
final String expectedLang, final IdentifiableLangStringValue langOwner) {
final Object lang = langOwner.getLang();
return ((expectedLang == null && lang == null)
|| (expectedLang != null && expectedLang.equals(lang)));
}
