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resource-type-field.js
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resource-type-field.js
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var Promise = require("bluebird");
function ResourceTypeField(declaration){
this.name = declaration.name;
this.type_name = declaration.type;
this.human_readable_name = declaration.human_readable_name || null;
var type_constructor = Sealious.ChipManager.get_chip("field_type", declaration.type);
this.type_parameters = declaration.params;
this.type = new type_constructor();
this.type.set_params(declaration.params);
this.required = declaration.required || false;
this.derived = declaration.derived || false;
}
ResourceTypeField.prototype = new function(){
/**
* Shorthand for ResourceTypeField.type.isProperValue
* @alias ResourceTypeField#isProperValue
* @param {object} value
* @return {Promise}
*/
this.isProperValue = function(value, dispatcher){
var that = this;
return new Promise(function(resolve, reject){
that.type.isProperValue(value, dispatcher).then(
resolve,
function(err){
/*
//older version, not compliant with #132
var new_error = {
field_name: that.name,
error_message: err
}
*/
var new_error={};
new_error[that.name] = err;
reject(new_error);
}
);
})
}
/**
* Encodes a value for this field so it can be stored safey in database. Reverse of @link ResourceTypeField#decodeValue
* @alias ResourceTypeField#encodeValue
* @param {any} value
* @param {Boolean} as_hashmap
* @return {Promise}
*/
this.encode_value = function(context, value, as_hashmap){
var that = this;
var encode_function = this.type.encode;
if(encode_function.uses_context){
encode_function = encode_function.bind(this.type, context);
}
return encode_function(value).then(function(encoded_value){
var ret_promise = new Promise(function(resolve, reject){
if(as_hashmap){
var ret = {};
ret[that.name] = encoded_value;
resolve(ret);
}else{
resolve(encoded_value);
}
})
return ret_promise;
});
}
/**
* @alias ResourceTypeField#decodeValue
* @todo Zaimplementować tę funkcję
*/
this.decodeValue = function(){
}
this.get_signature = function(){
var field_signature = {};
field_signature.name = this.name;
field_signature.type = this.type_name;
field_signature.required = this.required;
field_signature.human_readable_name = this.human_readable_name;
return field_signature;
}
}
module.exports = ResourceTypeField;

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