deercreeklabs.lancaster — deercreeklabs/lancaster 0.12.1

array-schema clj/s

(array-schema items-schema)

Creates a Lancaster schema object representing an Avro array with the given items schema.

boolean-schema clj/s

Lancaster schema object representing an Avro boolean.

bytes-schema clj/s

Lancaster schema object representing an Avro bytes.

child-schema clj/s

(child-schema schema)

(child-schema schema field-kw-or-branch-i)

Returns the child schema of the given schema

def-array-schema clj/s macro

(def-array-schema clj-name items-schema)

Defines a var whose value is a Lancaster array schema object

def-enum-schema clj/s macro

(def-enum-schema clj-name & args)

Defines a var whose value is a Lancaster enum schema object

def-fixed-schema clj/s macro

(def-fixed-schema clj-name size)

Defines a var whose value is a Lancaster fixed schema object

def-map-schema clj/s macro

(def-map-schema clj-name values-schema)

Defines a var whose value is a Lancaster map schema object

def-maybe-schema clj/s macro

(def-maybe-schema clj-name schema)

Defines a var whose value is a Lancaster union schema whose members are l/null-schema and the given schema. Makes a schema nillable.

def-record-schema clj/s macro

(def-record-schema clj-name & args)

Defines a var whose value is a Lancaster record schema object

def-union-schema clj/s macro

(def-union-schema clj-name & member-schemas)

Defines a var whose value is a Lancaster union schema object

default-data clj/s

(default-data schema)

Creates default data that conforms to the given Lancaster schema.

deserialize clj/s

(deserialize reader-schema writer-schema ba)

(deserialize reader-schema writer-schema ba opts)

Deserializes Avro-encoded data from a byte array, using the given reader and writer schemas.

deserialize-same clj/s

(deserialize-same schema ba)

(deserialize-same schema ba opts)

Deserializes Avro-encoded data from a byte array, using the given schema as both the reader and writer schema. Note that this is not recommended, since the original writer's schema should always be used to deserialize. The writer's schema (in Parsing Canonical Form) should always be stored or transmitted with encoded data.

double-schema clj/s

Lancaster schema object representing an Avro double.

edn clj/s

(edn schema)

Returns an EDN representation of the given Lancaster schema.

edn->schema clj/s

(edn->schema edn)

enum-schema clj/s

(enum-schema name-kw symbol-keywords)

(enum-schema name-kw docstring symbol-keywords)

Creates a Lancaster schema object representing an Avro enum with the given symbol keywords. For a more concise way to declare an enum schema, see def-enum-schema.

fingerprint128 clj/s

(fingerprint128 schema)

Returns the 128-bit MD5 digest of the Parsing Canonical Form of the given Lancaster schema.

fingerprint256 clj/s

(fingerprint256 schema)

Returns the 256-bit SHA-256 hash of the Parsing Canonical Form of the given Lancaster schema.

fingerprint64 clj/s

(fingerprint64 schema)

Returns the 64-bit Rabin fingerprint of the Parsing Canonical Form of the given Lancaster schema.

fixed-schema clj/s

(fixed-schema name-kw size)

Creates a Lancaster schema object representing an Avro fixed with the given size. For a more concise way to declare a fixed schema, see def-fixed-schema.

float-schema clj/s

Lancaster schema object representing an Avro float.

int-schema clj/s

Lancaster schema object representing an Avro int.

json clj/s

(json schema)

Returns an Avro-compliant JSON representation of the given Lancaster schema.

json->schema clj/s

(json->schema json)

Creates a Lancaster schema object from an Avro schema in JSON format.

long-schema clj/s

Lancaster schema object representing an Avro long.

map-schema clj/s

(map-schema values-schema)

Creates a Lancaster schema object representing an Avro map with the given values schema. Keys are always strings.

maybe clj/s

(maybe schema)

Creates a Lancaster union schema whose members are l/null-schema and the given schema. Makes a schema nillable. If the given schema is a union, returns a schema with l/null-schema in the first postion. If the given union schema already has l/null-schema as a member, it is returned unchanged. Similarly, if the given schema is l/null-schema, it is returned unchanged.

member-schema-at-branch clj/s

(member-schema-at-branch union-schema branch-index)

Returns the member schema at the given union schema branch index.

member-schemas clj/s

(member-schemas union-schema)

Returns the member schemas of the given union schema.

name-kw clj/s

(name-kw schema)

Returns the name keyword for the given Lancaster schema.

null-schema clj/s

Lancaster schema object representing an Avro null.

pcf clj/s

(pcf schema)

Returns a JSON string containing the Avro Parsing Canonical Form of the given Lancaster schema.

record-schema clj/s

(record-schema name-kw fields)

(record-schema name-kw docstring fields)

Creates a Lancaster schema object representing an Avro record with the given field definitions. For a more concise way to declare a record schema, see def-record-schema.

schema-at-path clj/s

(schema-at-path schema path)

(schema-at-path schema path {:keys [branches?] :as opts})

schema-type clj/s

(schema-type schema)

Returns the Avro type of the given schema

schema? clj/s

(schema? arg)

Returns a boolean indicating whether or not the argument is a Lancaster schema object.

schemas-match? clj/s

(schemas-match? reader-schema writer-schema)

Returns a boolean indicating whether or not the given reader and writer schemas match, according to the Avro matching rules.

serialize clj/s

(serialize writer-schema data)

Serializes data to a byte array, using the given Lancaster schema.

string-schema clj/s

Lancaster schema object representing an Avro string.

string-set-schema clj/s

Lancaster schema object representing a Clojure set with string members. Implemented using an Avro map with null values.

union-schema clj/s

(union-schema member-schemas)

Creates a Lancaster schema object representing an Avro union with the given member schemas.