Hi Maria, Sorry for the late reply. Let's keep it simple.You can throw an exception when you receive a STRING and only process RECORD cases in UNION.
Example: https://github.com/apache/gora/blob/b45581a371d2d69c472c37793efa085436056c9b/gora-lucene/src/main/java/org/apache/gora/lucene/store/LuceneStore.java#L349 Regards, John El mar, 19 ene 2021 a las 4:49, Maria Podorvanova (< podorvanova.ma...@gmail.com>) escribió: > Hi > > Thank you for your comments. > > I will take a look into your links, but my question was a bit different. > The problem is that foreign key "boss" is represented in Avro as UNION of > three types: STRING, NULL and RECORD. Your answer is in regards to how to > handle the last case (RECORD), but I was asking about how to handle > the STRING case. AFAIU STRING refers to the Employee's primary key type, so > that you could write "boss: '123'" instead of specifying the whole object. > Should I be making an additional GET request for this case? > > Regards, > Maria > > On Tue, 19 Jan 2021 at 08:53, John Mora <jhnmora...@gmail.com> wrote: > >> Hi Maria, >> >> Thanks for the update. >> >> Some comments: >> >> >> https://github.com/podorvanova/gora/blob/gora-664/gora-elasticsearch/src/main/java/org/apache/gora/elasticsearch/store/ElasticsearchStore.java#L192 >> >> Please add the index mappings when you create the elasticsearch index. >> >> >> https://www.elastic.co/guide/en/elasticsearch/client/java-rest/master/java-rest-high-create-index.html#java-rest-high-create-index-request-mappings >> >> You can use the Field mappings parsed from the XML file. >> >> >> https://github.com/podorvanova/gora/blob/gora-664/gora-elasticsearch/src/main/java/org/apache/gora/elasticsearch/mapping/ElasticsearchMapping.java#L28 >> >> Regarding your question, Elasticsearch supports complex datatypes: >> >> >> https://www.elastic.co/guide/en/elasticsearch/reference/current/object.html >> >> https://www.elastic.co/guide/en/elasticsearch/reference/current/nested.html >> >> You can use the RethinkDB datastore as an example and store recursively >> the fields of the embedded objects. >> >> >> https://github.com/apache/gora/blob/b45581a371d2d69c472c37793efa085436056c9b/gora-rethinkdb/src/main/java/org/apache/gora/rethinkdb/store/RethinkDBStore.java#L448 >> >> Give it a try first and let me know if you get stuck. >> >> Alternatively, if the first option is not feasible, you can serialize the >> embedded objects as byte array, example: >> >> >> https://github.com/apache/gora/blob/master/gora-solr/src/main/java/org/apache/gora/solr/store/SolrStore.java#L735 >> >> https://www.elastic.co/guide/en/elasticsearch/reference/current/binary.html >> >> Best regards, >> John. >> >> El sáb, 16 ene 2021 a las 8:02, Maria Podorvanova (< >> podorvanova.ma...@gmail.com>) escribió: >> >>> Hi, >>> >>> Report #7 >>> Period: January 10 - January 16 >>> Activities: >>> - Fixed authentication [1]: >>> >>> 1. Set up password to Elasticsearch container properly >>> 2. Set default Elasticsearch container server’s username in >>> gora.properties >>> 3. Added exceptions for missing arguments in authentication >>> >>> - Added a parameter for the XSD validation [2]: >>> >>> 1. Defined a parameter for the XSD validation >>> 2. Added a test case for the parameter >>> 3. Made ElasticsearchStore read mapping file from properties, not >>> configuration >>> >>> - Implemented some basic Input-Output operations for schema management >>> [3]: >>> >>> 1. Implemented delete, get and put methods >>> 2. Implemented newInstance and getUnionSchema utility methods >>> 3. Implemented basic serialization/deserialization for primitive >>> AVRO types >>> >>> >>> Here are links to the commits: >>> [1] >>> https://github.com/apache/gora/commit/679b6d8f0a27b7a7be99b6e8773327d482b9996b >>> [2] >>> https://github.com/apache/gora/commit/0f17849a383ef5f29e650eda22fb4d3022578f43 >>> [3] >>> https://github.com/apache/gora/commit/474a3946ebfde25732fe16d6546aa479fc6509a0 >>> >>> This week I have started work on serialization/deserialization. While >>> testing get method I found that UNION case could be a combination of NULL, >>> STRING or another RECORD for external table references (e.g. boss for >>> Employee). Could you explain to me what I should do in this case? I see two >>> possible cases here: 1) Do deserialize recursively if the field value is a >>> RECORD 2) Make another request for STRING case, where I have only key for >>> the external object. >>> >>> Regards, >>> Maria >>> >>
