v1.9.0

[mobsense]

Major Feature Release

Features

• Support saving and persisting schema: Table.setSchema, readSchema, saveSchema
• Add schema.params to provide Table constructor params from persistent storage
• Deprecate Table.intercept and rename as Table.transform
• Remove Params.transform (was undocumented)
• Remove Schema Fields.transform and add Params.transform

Persisting Schemas

To assist better tooling for Single Table designs support is added to persist schemas in the table using the _Schema keys. The schema will also contain the Table constructor parameters including the typeField and delimiter. This permits auto-discovery of table items by reading the schema and from there, the item keys can be decoded.

Refactored Transforms

The previous ad-hoc scheme of transformers has been cleaned up and centralized as the Table params.transform and general API params.transform. Performing Schema field.transform is problematic if persisting schemas. So this functionality should be moved to the Table transformer which operates on the entire item rather than per field.

Enhanced metrics with:

• Add metrics.env for dynamic control via the LOG_FILTER env var
• Add metrics.enable to control emission of metrics
• Add metrics.queries to enable query profiling
• Add Tenant dimension
• Add metrics.dimensions for configurable dimensions
• Add metrics.properties for additional properties to add to the EMF record.

Fixes

• Stop doing a get and transaction on unique property updates.
• Nested unique properties inside transactions. [BUG]: Creating transactions with a model that contains unique properties #134
• Optimize handling of unique property updates. [BUG]: Updating an item that contains a unique flagged field always does a get op when not needed #129

See

• Documentation

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This discussion was created from the release v1.9.0.