Class: Couchbase::Options::Get

Inherits:
Base
  • Object
show all
Defined in:
lib/couchbase/options.rb

Overview

Options for Collection#get

Constant Summary collapse

DEFAULT =

This constant is part of a private API. You should avoid using this constant if possible, as it may be removed or be changed in the future. 

Get.new.freeze

Instance Attribute Summary collapse

Attributes inherited from Base

#client_context, #parent_span, #retry_strategy, #timeout

Instance Method Summary collapse

Constructor Details

#initialize(projections: [], with_expiry: false, transcoder: JsonTranscoder.new, timeout: nil, retry_strategy: nil, client_context: nil, parent_span: nil) {|self| ... } ⇒ Get

Creates an instance of options for Collection#get

Parameters:

  • projections (Array<String>) (defaults to: []) —

    a list of paths that should be loaded if present.

  • with_expiry (Boolean) (defaults to: false) —

    if true the expiration will be also fetched with Collection#get

  • transcoder (JsonTranscoder, #decode(String, Integer)) (defaults to: JsonTranscoder.new) —

    used for decoding

  • timeout (Integer, #in_milliseconds, nil) (defaults to: nil) —

    the time in milliseconds allowed for the operation to complete

  • retry_strategy (Proc, nil) (defaults to: nil) —

    the custom retry strategy, if set

  • client_context (Hash, nil) (defaults to: nil) —

    the client context data, if set

  • parent_span (Span, nil) (defaults to: nil) —

    if set holds the parent span, that should be used for this request

Yield Parameters:



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# File 'lib/couchbase/options.rb', line 71

def initialize(projections: [],
               with_expiry: false,
               transcoder: JsonTranscoder.new,
               timeout: nil,
               retry_strategy: nil,
               client_context: nil,
               parent_span: nil)
  super(timeout: timeout, retry_strategy: retry_strategy, client_context: client_context, parent_span: parent_span)
  @projections = projections
  @with_expiry = with_expiry
  @transcoder = transcoder
  @preserve_array_indexes = false
  yield self if block_given?
end

Instance Attribute Details

#preserve_array_indexes ⇒ Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns whether to use sparse arrays (default false).

Returns:

  • (Boolean) —

    whether to use sparse arrays (default false)



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# File 'lib/couchbase/options.rb', line 99

def preserve_array_indexes
  @preserve_array_indexes
end

#projections ⇒ Array<String>

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns list of paths to project.

Returns:

  • (Array<String>) —

    list of paths to project



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# File 'lib/couchbase/options.rb', line 103

def projections
  @projections
end

#transcoder ⇒ JsonTranscoder, #decode(String, Integer)

Returns:



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# File 'lib/couchbase/options.rb', line 57

def transcoder
  @transcoder
end

#with_expiry ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/couchbase/options.rb', line 56

def with_expiry
  @with_expiry
end

Instance Method Details

#need_projected_get? ⇒ Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns:

  • (Boolean) 


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# File 'lib/couchbase/options.rb', line 107

def need_projected_get?
  @with_expiry || !@projections&.empty?
end

#project(*paths) ⇒ Object

Allows to specify a custom list paths to fetch from the document instead of the whole.

Note that a maximum of 16 individual paths can be projected at a time due to a server limitation. If you need more than that, think about fetching less-generic paths or the full document straight away.

Parameters:

  • paths (String, Array<String>) —

    a path that should be loaded if present.



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# File 'lib/couchbase/options.rb', line 92

def project(*paths)
  @projections ||= []
  @projections |= paths.flatten # union with current projections
end

#to_backend ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/couchbase/options.rb', line 112

def to_backend
  options = {
    timeout: Utils::Time.extract_duration(@timeout),
  }
  options.update(with_expiry: true) if @with_expiry
  unless @projections&.empty?
    options.update({
      projections: @projections,
      preserve_array_indexes: @preserve_array_indexes,
    })
  end
  options
end