I am using Mule SDK for developing a custom connector. I am working on fetching the necessary metadata. The following are the two snippets that i use: WeatherConnectrOperations.java:
public class WeatherConnectrOperations {
public void select(@MetadataKeyId(RecordKeysResolver.class) String type) {
}
}
RecordKeysResolver.java:
public class RecordKeysResolver implements TypeKeysResolver {
@Override
public String getCategoryName() {
return "Records";
}
@Override
public Set<MetadataKey> getKeys(MetadataContext context) throws MetadataResolvingException, ConnectionException {
System.out.println("Hello");
List<String> keyIds = Arrays.asList("Author_id", "BookList_id", "Book_id");
HashSet<MetadataKey> keys = new HashSet<>();
for (String id : keyIds) {
MetadataKeyBuilder builder = MetadataKeyBuilder.newKey(id);
builder.withDisplayName(StringUtils.removeEnd(id, "_id"));
keys.add(builder.build());
}
return keys;
}
}
My problem is that, the type field is not getting populated with the necessary keys
I am doing as per this document - https://docs.mulesoft.com/mule-sdk/1.1/metadata-keys
It's not mentioned in the documentation, but it seems that metadata keys won't get resolved unless there is a matching Input/OutputTypeResolver.
Make sure that matching Input/OutputTypeResolver has the same CategoryName as KeyResolver and I also found that name of the variable should be the same in Operation method and Input/OutputTypeResolver.
I guess the logic is that you don't need metadata key if you don't have metadata resolver. If you just need a dropdown list of values you can use Value Providers (https://docs.mulesoft.com/mule-sdk/1.1/value-providers)