Class: Deimos::SchemaClass::Record

Inherits:
Base
  • Object
show all
Defined in:
lib/deimos/schema_class/record.rb

Overview

Base Class of Record Classes generated from Avro.

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Base

#==, #[]=, #as_json, #initialize, #inspect

Constructor Details

This class inherits a constructor from Deimos::SchemaClass::Base

Instance Attribute Details

#tombstone_key ⇒ Object

Returns the value of attribute tombstone_key.



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# File 'lib/deimos/schema_class/record.rb', line 11

def tombstone_key
  @tombstone_key
end

Class Method Details

.initialize_from_value(value) ⇒ SchemaClass::Record

Returns:



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# File 'lib/deimos/schema_class/record.rb', line 76

def self.initialize_from_value(value)
  return nil if value.nil?

  value.is_a?(self) ? value : self.new(**value.symbolize_keys)
end

Instance Method Details

#[](key) ⇒ Object

Element access method as if this Object were a hash

Parameters:

  • key (String, Symbol)

Returns:

  • (Object) —

    The value of the attribute if exists, nil otherwise



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# File 'lib/deimos/schema_class/record.rb', line 37

def [](key)
  self.try(key.to_sym)
end

#full_schema ⇒ String

Returns the full schema name of the inheriting class.

Returns:

  • (String) 


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# File 'lib/deimos/schema_class/record.rb', line 60

def full_schema
  "#{namespace}.#{schema}"
end

#merge(other_hash) ⇒ SchemaClass::Base

Merge a hash or an identical schema object with this one and return a new object.

Parameters:

Returns:



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# File 'lib/deimos/schema_class/record.rb', line 26

def merge(other_hash)
  obj = self.class.new(**self.to_h.symbolize_keys)
  other_hash.to_h.each do |k, v|
    obj.send("#{k}=", v)
  end
  obj
end

#namespace ⇒ String

Returns the namespace for the schema of the inheriting class.

Returns:

  • (String)

Raises:



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# File 'lib/deimos/schema_class/record.rb', line 54

def namespace
  raise MissingImplementationError
end

#schema ⇒ String

Returns the schema name of the inheriting class.

Returns:

  • (String)

Raises:



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# File 'lib/deimos/schema_class/record.rb', line 48

def schema
  raise MissingImplementationError
end

#schema_fields ⇒ Array<String>

Returns an array of fields names in the schema.

Returns:

  • (Array<String>) —

    an array of fields names in the schema.



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# File 'lib/deimos/schema_class/record.rb', line 71

def schema_fields
  validator.schema_fields.map(&:name)
end

#to_h ⇒ Hash

Converts the object attributes to a hash which can be used for Kafka

Returns:

  • (Hash) —

    the payload as a hash.



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# File 'lib/deimos/schema_class/record.rb', line 15

def to_h
  if self.tombstone_key
    { payload_key: self.tombstone_key&.as_json }
  else
    self.as_json
  end
end

#validator ⇒ Deimos::SchemaBackends::Base

Returns the schema validator from the schema backend

Returns:



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# File 'lib/deimos/schema_class/record.rb', line 66

def validator
  Deimos.schema_backend(schema: schema, namespace: namespace)
end

#with_indifferent_access ⇒ SchemaClass::Record

Returns:



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# File 'lib/deimos/schema_class/record.rb', line 42

def with_indifferent_access
  self
end