/*
* Returns all root operators contained in the set.
*/
private Set<XMLOperator> filterRootOperators(Set<XMLOperator> flattenedOps) {
Set<XMLOperator> rootOps = new HashSet<XMLOperator>();
for (XMLOperator op : flattenedOps) {
if (op.getParents().isEmpty()) rootOps.add(op);
}
return rootOps;
}
/*
* Flattens an operator: Returns the operator and it's
* children in a set.
*/
private Set<XMLOperator> flatten(XMLOperator op) {
Set<XMLOperator> ops = new HashSet<XMLOperator>();
ops.add(op);
for (XMLOperator child : op.getChildren()) {
Set<XMLOperator> _ops = flatten(child);
ops.addAll(_ops);
}
return ops;
}
public static XMLFragmentMapping getInstance(
FragmentMapping fm, XMLElementResolverFactory resolverFac) {
logger.debug("Resolving fragment-mapping: " + fm);
XMLResolver<FragmentMapping, XMLFragmentMapping> fmResolver =
resolverFac.getResolver(FragmentMapping.class, XMLFragmentMapping.class);
if (fmResolver == null)
throw new ReuseRuntimeException(
"No XMLResolver found for " + FragmentMapping.class + ", " + XMLFragmentMapping.class);
IdGenerator<XMLFragmentMapping> fmIdGenerator =
resolverFac.getIdGenerator(XMLFragmentMapping.class);
if (fmIdGenerator == null)
throw new ReuseRuntimeException("No IdGenerator found for " + XMLFragmentMapping.class);
if (fmResolver.isBound(fm)) {
XMLFragmentMapping resolved = fmResolver.resolve(fm);
logger.debug("Cache hit for fragment-mapping: " + fm + ", in cache: " + resolved);
return resolved;
}
// TFragmentizer2.printFragmentMapping(fm);
Set<Operator> ops = fm.getOperators();
Set<XMLOperator> xmlOps = new HashSet<XMLOperator>();
for (Operator op : ops) {
XMLOperator xmlOp = XMLOperator.getInstance(op, resolverFac);
xmlOps.add(xmlOp);
}
XMLFragmentMapping xmlFm = new XMLFragmentMapping();
String id = fm.getId();
// if no id is set -> generate one
if (id == null) {
id = fmIdGenerator.generateId(xmlFm);
}
xmlFm.setId(id);
xmlFm.setOperators(xmlOps);
fmResolver.bind(fm, xmlFm);
logger.debug("Resolved fragment-mapping: " + fm + " to: " + xmlFm);
return xmlFm;
}
