private String getFullname(Tag tag, String defaultValue) {
if (tag != null) {
String fn = tag.getFullname();
if (StringUtil.isEmpty(fn)) fn = tag.getTagLibTag().getFullName();
if (!StringUtil.isEmpty(fn)) return fn;
}
return defaultValue;
}
public static boolean isLiteralAttribute(
Tag tag, Attribute attr, short type, boolean required, boolean throwWhenNot)
throws EvaluatorException {
String strType = "/constant";
if (attr != null && !isNull(attr.getValue())) {
switch (type) {
case TYPE_ALL:
if (attr.getValue() instanceof Literal) return true;
break;
case TYPE_BOOLEAN:
if (CastBoolean.toExprBoolean(attr.getValue()) instanceof LitBoolean) return true;
strType = " boolean";
break;
case TYPE_NUMERIC:
if (CastDouble.toExprDouble(attr.getValue()) instanceof LitDouble) return true;
strType = " numeric";
break;
case TYPE_STRING:
if (CastString.toExprString(attr.getValue()) instanceof LitString) return true;
strType = " string";
break;
}
if (!throwWhenNot) return false;
throw new EvaluatorException(
"Attribute ["
+ attr.getName()
+ "] of the Tag ["
+ tag.getFullname()
+ "] must be a literal"
+ strType
+ " value. "
+ "attributes java class type "
+ attr.getValue().getClass().getName());
}
if (required) {
if (!throwWhenNot) return false;
throw new EvaluatorException(
"Attribute [" + attr.getName() + "] of the Tag [" + tag.getFullname() + "] is required");
}
return false;
}
/**
* Gibt ein uebergeordnetes Tag mit dem uebergebenen Full-Name (Namespace und Name) zurueck, falls
* ein solches existiert, andernfalls wird null zurueckgegeben.
*
* @param el Startelement, von wo aus gesucht werden soll.
* @param fullName Name des gesuchten Tags.
* @return uebergeornetes Element oder null.
*/
public static Tag getAncestorTag(Tag tag, String fullName) {
Statement parent = tag;
while (true) {
parent = parent.getParent();
if (parent == null) return null;
if (parent instanceof Tag) {
tag = (Tag) parent;
if (tag.getFullname().equalsIgnoreCase(fullName)) return tag;
}
}
}
public static boolean isParentTag(Tag tag, String fullName) {
Tag p = getParentTag(tag);
if (p == null) return false;
return p.getFullname().equalsIgnoreCase(fullName);
}