pip-services3-commons-node
Version:
Portable abstractions and patterns for Pip.Services in Node.js
110 lines • 4.56 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
/** @module reflect */
/** @hidden */
var _ = require('lodash');
var IntegerConverter_1 = require("../convert/IntegerConverter");
var ObjectReader_1 = require("./ObjectReader");
var ObjectWriter_1 = require("./ObjectWriter");
var RecursiveObjectReader_1 = require("./RecursiveObjectReader");
/**
* Helper class to perform property introspection and dynamic writing.
*
* It is similar to [[ObjectWriter]] but writes properties recursively
* through the entire object graph. Nested property names are defined
* using dot notation as "object.subobject.property"
*
* @see [[PropertyReflector]]
* @see [[ObjectWriter]]
*/
var RecursiveObjectWriter = /** @class */ (function () {
function RecursiveObjectWriter() {
}
RecursiveObjectWriter.createProperty = function (obj, names, nameIndex) {
// If next field is index then create an array
var subField = names.length > nameIndex + 1 ? names[nameIndex + 1] : null;
var subFieldIndex = IntegerConverter_1.IntegerConverter.toNullableInteger(subField);
if (subFieldIndex != null)
return [];
// Else create a dictionary
return {};
};
RecursiveObjectWriter.performSetProperty = function (obj, names, nameIndex, value) {
if (nameIndex < names.length - 1) {
var subObj = ObjectReader_1.ObjectReader.getProperty(obj, names[nameIndex]);
if (subObj != null)
RecursiveObjectWriter.performSetProperty(subObj, names, nameIndex + 1, value);
else {
subObj = RecursiveObjectWriter.createProperty(obj, names, nameIndex);
if (subObj != null) {
RecursiveObjectWriter.performSetProperty(subObj, names, nameIndex + 1, value);
ObjectWriter_1.ObjectWriter.setProperty(obj, names[nameIndex], subObj);
}
}
}
else
ObjectWriter_1.ObjectWriter.setProperty(obj, names[nameIndex], value);
};
/**
* Recursively sets value of object and its subobjects property specified by its name.
*
* The object can be a user defined object, map or array.
* The property name correspondently must be object property,
* map key or array index.
*
* If the property does not exist or introspection fails
* this method doesn't do anything and doesn't any throw errors.
*
* @param obj an object to write property to.
* @param name a name of the property to set.
* @param value a new value for the property to set.
*/
RecursiveObjectWriter.setProperty = function (obj, name, value) {
if (obj == null || name == null)
return;
var names = name.split(".");
if (names == null || names.length == 0)
return;
RecursiveObjectWriter.performSetProperty(obj, names, 0, value);
};
/**
* Recursively sets values of some (all) object and its subobjects properties.
*
* The object can be a user defined object, map or array.
* Property values correspondently are object properties,
* map key-pairs or array elements with their indexes.
*
* If some properties do not exist or introspection fails
* they are just silently skipped and no errors thrown.
*
* @param obj an object to write properties to.
* @param values a map, containing property names and their values.
*
* @see [[setProperty]]
*/
RecursiveObjectWriter.setProperties = function (obj, values) {
if (values == null)
return;
for (var key in values) {
var value = values[key];
RecursiveObjectWriter.setProperty(obj, key, value);
}
};
/**
* Copies content of one object to another object
* by recursively reading all properties from source object
* and then recursively writing them to destination object.
*
* @param dest a destination object to write properties to.
* @param src a source object to read properties from
*/
RecursiveObjectWriter.copyProperties = function (dest, src) {
if (dest == null || src == null)
return;
var values = RecursiveObjectReader_1.RecursiveObjectReader.getProperties(src);
RecursiveObjectWriter.setProperties(dest, values);
};
return RecursiveObjectWriter;
}());
exports.RecursiveObjectWriter = RecursiveObjectWriter;
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