public static boolean isValidArcXri(XDI3SubSegment arcXri) {
if (arcXri == null) return false;
if (arcXri.isClassXs()) return false;
if (!arcXri.isAttributeXs()) return false;
if (XDIConstants.CS_PLUS.equals(arcXri.getCs())
|| XDIConstants.CS_DOLLAR.equals(arcXri.getCs())) {
if (!arcXri.hasLiteral() && !arcXri.hasXRef()) return false;
} else {
return false;
}
return true;
}
private static boolean isIri(String string) {
int indexColon = string.indexOf(':');
int indexEquals = string.indexOf(XDIConstants.CS_EQUALS.charValue());
int indexAt = string.indexOf(XDIConstants.CS_AT.charValue());
int indexPlus = string.indexOf(XDIConstants.CS_PLUS.charValue());
int indexDollar = string.indexOf(XDIConstants.CS_DOLLAR.charValue());
int indexStar = string.indexOf(XDIConstants.CS_STAR.charValue());
int indexBang = string.indexOf(XDIConstants.CS_BANG.charValue());
if (indexColon == -1) return false;
if (indexEquals != -1 && indexEquals < indexColon) return false;
if (indexAt != -1 && indexAt < indexColon) return false;
if (indexPlus != -1 && indexPlus < indexColon) return false;
if (indexDollar != -1 && indexDollar < indexColon) return false;
if (indexStar != -1 && indexStar < indexColon) return false;
if (indexBang != -1 && indexBang < indexColon) return false;
return true;
}