Schema computeAvroSchema() {
HashSet<String> observedSchemas = new HashSet<String>();
List<Schema> fields = new ArrayList<Schema>();
for (InferredType it : unionTypes) {
Schema itS = it.getAvroSchema();
if (itS == null) {
continue;
}
String schemaDesc = itS.toString();
if (!observedSchemas.contains(schemaDesc)) {
observedSchemas.add(schemaDesc);
fields.add(it.getAvroSchema());
}
}
return Schema.createUnion(fields);
}
Map<String, Set<Integer>> findCandidateUnionDecisions() {
HashSet<Integer> curDecisions = new HashSet<Integer>();
for (int i = 0; i < unionTypes.size(); i++) {
for (int j = i + 1; j < unionTypes.size(); j++) {
List<String> iBases = unionTypes.get(i).getBases();
List<String> jBases = unionTypes.get(j).getBases();
if (isPrefixOf(iBases, jBases) || isPrefixOf(jBases, iBases)) {
curDecisions.add(i);
curDecisions.add(j);
}
}
}
Map<String, Set<Integer>> candidateUnionDecisions = new HashMap<String, Set<Integer>>();
for (InferredType subelt : unionTypes) {
candidateUnionDecisions.putAll(subelt.findCandidateUnionDecisions());
}
if (curDecisions.size() > 0) {
candidateUnionDecisions.put(name, curDecisions);
}
return candidateUnionDecisions;
}