Migration from 1.x to 2.6 of weaviate

[bwbw723]

I am fresh of Haystack and I'd like to migrate the existing codes of Haystack 1.x to current 2.6.1.
I checked the document and there are some differences.
The new WeaviateDocumentStore does not support those kind of parameters such as index, custom_schema and so on.
I just found something like embedded_options, additional_config now instead.
It seems that there are no detailed information for those kind of paramaters, so I have to ask for a help on the migration process.
Could someone kindly share some examples on the migration for below kind of codes?
document_store = WeaviateDocumentStore(host="http://localhost", port=8080, index=index_name, name_field=name_field, embedding_dim=768, recreate_index=False, index_type="hnsw", custom_schema=custom_schema) document_store.delete_documents(index=index_name)

Also, the document store use the write_document function in 1.x, is that OK to use it in Haystack 2.x? Or I need to change it with the pipelines?
Thanks a lot for the help.

[anakin87]

You can find more information in the docs and in the API reference

Init parameters

host and port are replaced by url

index and custom_schema are somehow replaced by collection_settings.
If not set, collection_settings is as follows

{
            "class": "Default",
            "invertedIndexConfig": {"indexNullState": True},
            "properties": [
                                  {"name": "_original_id", "dataType": ["text"]},
                                  {"name": "content", "dataType": ["text"]},
                                  {"name": "dataframe", "dataType": ["text"]},
                                  {"name": "blob_data", "dataType": ["blob"]},
                                  {"name": "blob_mime_type", "dataType": ["text"]},
                                  {"name": "score", "dataType": ["number"]},
                              ],
        }

Other 1.x parameters do not seem to have a clear replacement in 2.x.

Methods

All Document Stores respect the same protocol and have (at least) these methods:

• count_documents
• filter_documents
• write_documents
• delete_documents

See the docs.

[bwbw723]

Thanks a lot for the quick reply and I will check the sample codes and update the existing codes. Any updates I will add here.