Learn "JOLT" JSON transformation library

Explore the jolt json transformation library specs by mapping left-hand side inputs to right-hand side outputs, selecting rating value, and placing it under customer.rating.value with dot-separated json paths.

Test your jolt spec using an online tool at the jolt demo appspot.com. Provide json input, validate it, then enter a spec and click transform to see the output.

Explore Jolt operations like shift, default, remove, and cardinality to transform values and convert objects to arrays. Master modify default beta and modify override beta for null or present values.

Learn how the ampersand in jolt spec picks up the field name relative to the current child pointer, using level-based navigation from ground to root to build output.

Explore how the Jolt json transformation library uses the asterisk to iterate over rating elements, fetch values, and build arrays and keys such as prime.v1 with ampersand and prefixes.

Learn how the @ symbol guides Jolt pointers to field names, iterate with an asterisk, and map expert and general ratings into prime fields, producing all ratings arrays.

Discover how the dollar symbol in a jolt spec selects all fields under a node, iterating over them to collect field names into ratings.all_params.

Explain how the hash on the left-hand side sets a default value and how asterisk and ampersand control iteration and field placement, including a default category under product.

Apply Jolt transformations to rename name to player, navigate nested teams and members arrays with ampersand and level, and group results using hash keys for a clean, grouped output.

Learn how to use the pipe character in JOLT to extract a value from varying inputs, picking either full name or customer name and mapping it to customer name.

Explore how JOLT's special characters drive JSON transformation, including for loops, level-based lookups, shift operations, and how default beta and override beta control output.

Apply the remove operation in jolt to delete a selected field, specify blank as the target, and ensure the operation name is remove for the rule to take effect.

Explore operation chaining in jolt by combining shift and remove transforms, where the first step's output automatically feeds into the next within a spec array.

Explore cardinality in JOLT JSON transformation by converting between single objects and arrays, selecting the first object, and discarding extras to shape output structures.

Apply a sort operation to arrange output field names in alphabetical order for readability, noting that JSON values are order-insensitive, so the sequence doesn't affect data meaning.

Learn how to implement a simple if-else in JOLT to set client citizenship based on country, using a shift operation and default values for Brazil and foreigner.

Learn how to perform data type conversion with JOLT, using modify default and override to overwrite null or existing values, including lowercasing, integer and boolean conversions.

Explore how to squash nulls with the JOLT JSON transformation library, first removing nulls at one level, then using recursive squash null to cleanse all nested null fields.

Learn how to use modify override beta in the jolt json transformation library to iterate over array objects, overwrite fields, and add static id 123 or dynamic is valid true.

Generate a jolt spec using chat gpt to map input json into a user info node, with user id and user name, then test and validate the result.