Module: Arango::Edge::ClassMethods

Defined in:
lib/arango/edge/class_methods.rb

Overview

Arango Edge ClassMethods

Instance Method Summary collapse

Instance Method Details

#all(offset: 0, limit: nil, batch_size: nil, edge_collection:) ⇒ Object

returns Array of Edge



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# File 'lib/arango/edge/class_methods.rb', line 10

def all (offset: 0, limit: nil, batch_size: nil, edge_collection:)
  bind_vars = {}
  query = "FOR doc IN #{edge_collection.name}"
  if limit && offset
    query << "\n LIMIT @offset, @limit"
    bind_vars[:offset] = offset
    bind_vars[:limit] = limit
  end
  raise Arango::Error.new err: "offset must be used with limit" if offset > 0 && !limit
  query << "\n RETURN doc"
  body = { query: query }
  unless bind_vars.empty?
    body[:bind_vars] = bind_vars
  end
  if batch_size
    body[:batch_size] = batch_size
  end
  result = Arango::Requests::Cursor::Create.execute(server: edge_collection.server, body: body)
  result_proc = ->(result) { result.result.map { |edge_attr| Arango::Edge::Base.new(attributes: edge_attr, edge_collection: edge_collection) }}
  final_result = result_proc.call(result)
  if result[:has_more]
    edge_collection.instance_variable_set(:@cursor, result)
    edge_collection.instance_variable_set(:@batch_proc, result_proc)
    unless batch_size
      while edge_collection.has_more?
        b = edge_collection.next_batch
        final_result += b if b
      end
    end
  end
  final_result
end

#create_edges(edges, wait_for_sync: nil, edge_collection:) ⇒ Object 



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# File 'lib/arango/edge/class_methods.rb', line 99

def create_edges (edges, wait_for_sync: nil, edge_collection:)
  edges = [edges] unless edges.is_a? Array
  edges = edges.map{ |d| _attributes_from_arg(d) }
  params = { returnNew: true }
  params[:waitForSync] = wait_for_sync unless wait_for_sync.nil?
  args = { collection: edge_collection.name }
  result = Arango::Requests::Document::CreateMultiple.execute(server: edge_collection.server, args: args, params: params, body: edges)
  result.map do |edge|
    # returnNew does not work for 'multiple'
    Arango::Edge::Base.get(key: edge[:_key], edge_collection: edge_collection)
  end
end

#delete(key: nil, attributes: {}, ignore_revs: false, wait_for_sync: nil, edge_collection:) ⇒ Object 



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# File 'lib/arango/edge/class_methods.rb', line 234

def delete (key: nil, attributes: {}, ignore_revs: false, wait_for_sync: nil, edge_collection:)
  edge = _attributes_from_arg(attributes)
  edge[:_key] = key if key
  params = { }
  params[:waitForSync] = wait_for_sync unless wait_for_sync.nil?
  headers = nil
  headers = { "If-Match": edge[:_rev] } if !ignore_revs && edge.key?(:_rev)
  args = { collection: edge_collection.name, key: edge[:_key] }
  Arango::Requests::Document::Delete.execute(server: edge_collection.server, args: args, headers: headers, params: params)
end

#delete_edges(edges, ignore_revs: false, wait_for_sync: nil, edge_collection:) ⇒ Object 



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# File 'lib/arango/edge/class_methods.rb', line 245

def delete_edges (edges, ignore_revs: false, wait_for_sync: nil, edge_collection:)
  edges = [edges] unless edges.is_a? Array
  edges = edges.map{ |d| _attributes_from_arg(d) }
  params = { ignoreRevs: ignore_revs }
  params[:waitForSync] = wait_for_sync unless wait_for_sync.nil?
  args = { collection: edge_collection.name }
  Arango::Requests::Document::DeleteMultiple.execute(server: edge_collection.server, args: args, params: params, body: edges)
end

#exists?(key: nil, attributes: {}, match_rev: nil, edge_collection:) ⇒ Boolean

Returns:

  • (Boolean)

Raises:



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# File 'lib/arango/edge/class_methods.rb', line 77

def exists? (key: nil, attributes: {}, match_rev: nil, edge_collection:)
  edge = _attributes_from_arg(attributes)
  if key.nil?
    return !!self.get(key: key, attributes: attributes, edge_collection: edge_collection)
  end
  edge[:_key] = key
  headers = { }
  raise Arango::Error.new("Edge with key required!") unless edge.key?(:_key)
  if edge.key?(:_key) && edge.key?(:_rev) && match_rev == true
    headers[:'If-Match'] = edge[:_rev]
  elsif edge.key?(:_key) && edge.key?(:_rev) && match_rev == false
    headers[:'If-None-Match'] = edge[:_rev]
  end
  args = { collection: edge_collection.name, key: edge[:_key] }
  begin
    Arango::Requests::Document::Head.execute(server: edge_collection.server, args: args, headers: headers)
  rescue Error
    return false
  end
  true
end

#find_edges_matching(attributes, edge_collection:) ⇒ Object 



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# File 'lib/arango/edge/class_methods.rb', line 176

def find_edges_matching (attributes, edge_collection:)
  vars = _attributes_from_arg(attributes)
  results = []
  result_edges = []
  args = { collection: edge_collection.name }
  if vars.key?(:_key)
    args[:key] = vars[:_key]
    result = Arango::Requests::Document::Get.execute(server: edge_collection.server, args: args)
    results << result
    result_edges << Arango::Edge::Base.new(attributes: result, edge_collection: edge_collection)
  else
    bind_vars = {}
    query = "FOR doc IN #{edge_collection.name}"
    i = 0
    vars.each do |k,v|
      i += 1
      query << "\n FILTER doc.@key#{i} == @value#{i}"
      bind_vars["key#{i}"] = k.to_s
      bind_vars["value#{i}"] = v
    end
    query << "\n RETURN doc"
    aql = AQL.new(query: query, database: edge_collection.database, bind_vars: bind_vars, block: ->(_, result) do
                    result.result.each do |res|
                      result_edges << Arango::Edge::Base.new(attributes: res, edge_collection: edge_collection)
                      result_edges
                    end
                  end
                 )
    results += aql.request
  end
  results
end

#get(key: nil, attributes: {}, edge_collection:) ⇒ Object 



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# File 'lib/arango/edge/class_methods.rb', line 112

def get (key: nil, attributes: {}, edge_collection:)
  edge = _attributes_from_arg(attributes)
  edge[:_key] = key if key
  if edge.key?(:_key)
    args = {collection: edge_collection.name, key: edge[:_key] }
    result = Arango::Requests::Document::Get.execute(server: edge_collection.server, args: args)
    Arango::Edge::Base.new(attributes: result, edge_collection: edge_collection)
  else
    bind_vars = {}
    query = "FOR doc IN #{edge_collection.name}"
    i = 0
    edge.each do |k,v|
      i += 1
      query << "\n FILTER doc.@key#{i} == @value#{i}"
      bind_vars["key#{i}"] = k.to_s
      bind_vars["value#{i}"] = v
    end
    query << "\n LIMIT 1"
    query << "\n RETURN doc"
    aql = AQL.new(query: query, database: edge_collection.database, bind_vars: bind_vars, block: ->(_, result) do
                    Arango::Edge::Base.new(attributes: result.result.first, edge_collection: edge_collection) if result.result.first
                  end
                 )
    aql.request
  end
end

#get_edges(edges, edge_collection:) ⇒ Object 



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# File 'lib/arango/edge/class_methods.rb', line 139

def get_edges (edges, edge_collection:)
  edges = [edges] unless edges.is_a? Array
  edges = edges.map{ |d| _attributes_from_arg(d) }
  results = []
  result_edges = []
  args = { collection: edge_collection.name }
  edges.each do |edge|
    if edge.key?(:_key)
      args[:key] = edge[:_key]
      result = Arango::Requests::Document::Get.execute(server: edge_collection.server, args: args)
      results << result
      result_edges << Arango::Edge::Base.new(attributes: result, edge_collection: edge_collection)
    else
      bind_vars = {}
      query = "FOR doc IN #{edge_collection.name}"
      i = 0
      edge.each do |k,v|
        i += 1
        query << "\n FILTER doc.@key#{i} == @value#{i}"
        bind_vars["key#{i}"] = k.to_s
        bind_vars["value#{i}"] = v
      end
      query << "\n LIMIT 1"
      query << "\n RETURN doc"
      aql = AQL.new(query: query, database: edge_collection.database, bind_vars: bind_vars, block: ->(_, result) do
                      result_edges << Arango::Edge::Base.new(attributes: result.result.first, edge_collection: edge_collection) if result.result.first
                      result_edges
                    end
                   )
      results << aql.request
    end
  end
  results
end

#list(offset: 0, limit: nil, batch_size: nil, edge_collection:) ⇒ Object

returns Array of keys



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# File 'lib/arango/edge/class_methods.rb', line 44

def list (offset: 0, limit: nil, batch_size: nil, edge_collection:)
  bind_vars = {}
  query = "FOR doc IN #{edge_collection.name}"
  if limit && offset
    query << "\n LIMIT @offset, @limit"
    bind_vars[:offset] = offset
    bind_vars[:limit] = limit
  end
  raise Arango::Error.new err: "offset must be used with limit" if offset > 0 && !limit
  query << "\n RETURN doc._key"
  body = { query: query }
  unless bind_vars.empty?
    body[:bind_vars] = bind_vars
  end
  if batch_size
    body[:batch_size] = batch_size
  end
  result = Arango::Requests::Cursor::Create.execute(server: edge_collection.server, body: body)
  result_proc = ->(result) { result.result }
  final_result = result_proc.call(result)
  if result[:has_more]
    edge_collection.instance_variable_set(:@cursor, result)
    edge_collection.instance_variable_set(:@batch_proc, result_proc)
    unless batch_size
      while edge_collection.has_more?
        b = edge_collection.next_batch
        final_result += b if b
      end
    end
  end
  final_result
end

#replace_edges(edges, ignore_revs: false, wait_for_sync: nil, edge_collection:) ⇒ Object 



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# File 'lib/arango/edge/class_methods.rb', line 209

def replace_edges (edges, ignore_revs: false, wait_for_sync: nil, edge_collection:)
  edges = [edges] unless edges.is_a? Array
  edges = edges.map{ |d| _attributes_from_arg(d) }
  params = { returnNew: true, ignoreRevs: ignore_revs }
  params[:waitForSync] = wait_for_sync unless wait_for_sync.nil?
  args = { collection: edge_collection.name }
  result = Arango::Requests::Document::ReplaceMultiple.execute(server: edge_collection.server, args: args, params: params, body: edges)
  result.map do |doc|
    Arango::Edge::Base.new(attributes: doc[:new], edge_collection: edge_collection)
  end
end

#update_edges(edges, ignore_revs: false, wait_for_sync: nil, merge_objects: nil, edge_collection:) ⇒ Object 



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# File 'lib/arango/edge/class_methods.rb', line 221

def update_edges (edges, ignore_revs: false, wait_for_sync: nil, merge_objects: nil, edge_collection:)
  edges = [edges] unless edges.is_a? Array
  edges = edges.map{ |d| _attributes_from_arg(d) }
  params = { returnNew: true, ignoreRevs: ignore_revs }
  params[:waitForSync] = wait_for_sync unless wait_for_sync.nil?
  params[:mergeObjects] = merge_objects unless merge_objects.nil?
  args = { collection: edge_collection.name }
  result = Arango::Requests::Document::UpdateMultiple.execute(server: edge_collection.server, args: args, params: params, body: edges)
  result.map do |doc|
    Arango::Edge::Base.new(attributes: doc[:new], edge_collection: edge_collection)
  end
end