Add Stream-friendly alternative to JsoneNode.fields(): Set<Map.Entry<String, JsonNode>> properties() · Issue #3809 · FasterXML/jackson-databind (original) (raw)

Currently with Jackson 2.x the only way to traverse entries of ObjectNode is using fields() method.
This has the problem that it returns Iterator (of Map.Entry<String, JsonNode>) which is awkward to use (with Java 8 and above).

Similarly we can consider adding methods to replace:

• public Iterator iterator();
• public Iterator elements();

for "values" stream.

Naming-wise I am thinking of

• JsonNode.entryStream() -- but could also consider entries() or properties()?
• JsonNode.valueStream() -- but could consider just values()?

EDIT: At this point, favoring

• JsonNode.values() for single-value Stream (Array elements, Map entry values)
• JsonNode.properties() for Map.Entry<String, JsonNode> valued stream

backed by simple implementations of:

• ArrayList.stream() (ArrayNode), Map.values().stream() (ObjectNode)
• Map.entrySet().stream()