org.dataconservancy.pass.support.messaging.json

Class JsonParser

java.lang.Object

org.dataconservancy.pass.support.messaging.json.JsonParser

@Component
public class JsonParser
extends Object

Parses values of well-known keys from the JSON that may be received from the Fedora repository.

Author:

Elliot Metsger (emetsger@jhu.edu)

Constructor Summary

Constructors

Constructor and Description
JsonParser(com.fasterxml.jackson.databind.ObjectMapper objectMapper)

Method Summary

Modifier and Type	Method and Description
String	parseEtag(byte[] json)
String	parseId(byte[] json) Parses the id of a JSON representation of a JMS message emitted by Fedora.
Collection<String>	parseRepositoryUris(byte[] json) Parses the Constants.LdpRel.LDP_CONTAINS relationship from JSON representations of LDP containers in Fedora.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

JsonParser

@Autowired
public JsonParser(com.fasterxml.jackson.databind.ObjectMapper objectMapper)

Method Detail

parseId

public String parseId(byte[] json)

Parses the id of a JSON representation of a JMS message emitted by Fedora.

Parameters:

json - JSON payload of a JMS message emitted by Fedora that may contain an id

Returns:

the value of the id, or null

Throws:

RuntimeException - if json cannot be parsed

parseEtag

public String parseEtag(byte[] json)

parseRepositoryUris

public Collection<String> parseRepositoryUris(byte[] json)

Parses the Constants.LdpRel.LDP_CONTAINS relationship from JSON representations of LDP containers in Fedora.

Parameters:

json - JSON representation of a Fedora resource

Returns:

the URIs that are the object of the LDP_CONTAINS relationship, or an empty Collection

Throws:

RuntimeException - if json cannot be parsed