/**
* Adds the given attribute group definition to this Schema definition.
*
* @param attrGroup the AttributeGroupDecl to add
* @exception SchemaException if an AttributeGroupDecl already exisits with the same name
*/
public void addAttributeGroup(AttributeGroupDecl attrGroup) throws SchemaException {
if (attrGroup == null) return;
String name = attrGroup.getName();
// -- handle namespace prefix, if necessary
int idx = name.indexOf(':');
if (idx >= 0) {
String nsPrefix = name.substring(0, idx);
name = name.substring(idx + 1);
String ns = (String) namespaces.get(nsPrefix);
if (ns == null) {
String err = "addAttributeGroup: ";
err += "Namespace prefix not recognized '" + nsPrefix + "'";
throw new IllegalArgumentException(err);
}
if (!ns.equals(targetNS)) {
String err = "AttributeGroup has different namespace " + "than this Schema definition.";
throw new IllegalArgumentException(err);
}
}
if (attrGroup.getSchema() != this) {
String err = "invalid attempt to add an AttributeGroup which ";
err += "belongs to a different Schema; " + name;
throw new SchemaException(err);
}
Object obj = attributeGroups.get(name);
if (obj == attrGroup) return;
if (obj != null) {
String err =
"Error attempting to add an AttributeGroup to this "
+ "Schema definition, an AttributeGroup already exists with "
+ "the given name: ";
throw new SchemaException(err + name);
}
attributeGroups.put(name, attrGroup);
} // -- addAttributeGroup
