association-interface.js
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association-interface.js
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	/**
	* An interface for module developers that makes it easy to create a new association.
	* @alias AssociationInterface
	* @class
	* @static
	*/
	var AssociationInterface = new function(){
	/**
	* Creates an association with given options
	* @alias AssociationInterface.create
	* @param {object} options
	*/
	this.create = function(options){
	var from_type_name = options.left_type;
	var to_type_name = options.right_type;
	var bidirectional = options.bidirectional \|\| false;
	var from_field_name = options.name_ltr;
	var to_field_name = options.name_rtl;

	ResourceTypeManager.enforce_correct_type_name(from_type_name);
	ResourceTypeManager.enforce_correct_type_name(to_type_name);
	var from_type = ResourceTypeManager.getByName(from_type_name);
	var to_type = ResourceTypeManager.getByName(to_type_name);

	var from_field_options = {
	type: "association",
	required: options.left_required \|\| false
	};

	var field_type_arguments = {
	from_type_name: from_type_name,
	to_type_name: to_type_name
	}

	var from_field = new ResourceTypeField(from_field_name, from_field_options, field_type_arguments);

	from_type.addField(from_field);

	}
	}

	module.exports = AssociationInterface;