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Library for Creating an Operational Data Hub on MarkLogic
'use strict';
const char = function(a) {
return String.fromCharCode(a);
};
const chars = {
nilChar: char(176),
missingChar: char(201),
nilPremitive: char(175),
missingPremitive: char(200),
emptyChar: char(178),
emptyValue: char(177), //empty Premitive
boundryChar: char(179),
objStart: char(198),
arrStart: char(204),
arrayEnd: char(185),
};
const charsArr = [
chars.nilChar,
chars.nilPremitive,
chars.missingChar,
chars.missingPremitive,
chars.boundryChar,
chars.emptyChar,
chars.emptyValue,
chars.arrayEnd,
chars.objStart,
chars.arrStart,
];
const _e = function(node, e_schema, options) {
if (typeof e_schema === 'string') {
//premitive
if (node && node[0] && node[0].val !== undefined) {
return getValue(node[0].val, e_schema);
} else {
return getValue(node, e_schema);
}
} else {
const hasValidData = hasData(node);
if (hasValidData === true) {
let str = '';
if (Array.isArray(e_schema)) {
//attributes can't be repeated. hence check in children tags only
str += chars.arrStart;
const itemSchema = e_schema[0];
//var itemSchemaType = itemSchema;
const arr_len = node.length;
if (typeof itemSchema === 'string') {
for (let arr_i = 0; arr_i < arr_len; arr_i++) {
const r = getValue(node[arr_i].val, itemSchema);
str = processValue(str, r);
}
} else {
for (let arr_i = 0; arr_i < arr_len; arr_i++) {
const r = _e(node[arr_i], itemSchema, options);
str = processValue(str, r);
}
}
str += chars.arrayEnd; //indicates that next item is not array item
} else {
//object
str += chars.objStart;
const keys = Object.keys(e_schema);
if (Array.isArray(node)) {
node = node[0];
}
for (let i in keys) {
const key = keys[i];
//a property defined in schema can be present either in attrsMap or children tags
//options.textNodeName will not present in both maps, take it's value from val
//options.attrNodeName will be present in attrsMap
let r;
if (!options.ignoreAttributes && node.attrsMap && node.attrsMap[key]) {
r = _e(node.attrsMap[key], e_schema[key], options);
} else if (key === options.textNodeName) {
r = _e(node.val, e_schema[key], options);
} else {
r = _e(node.child[key], e_schema[key], options);
}
str = processValue(str, r);
}
}
return str;
} else {
return hasValidData;
}
}
};
const getValue = function(a /*, type*/) {
switch (a) {
case undefined:
return chars.missingPremitive;
case null:
return chars.nilPremitive;
case '':
return chars.emptyValue;
default:
return a;
}
};
const processValue = function(str, r) {
if (!isAppChar(r[0]) && !isAppChar(str[str.length - 1])) {
str += chars.boundryChar;
}
return str + r;
};
const isAppChar = function(ch) {
return charsArr.indexOf(ch) !== -1;
};
function hasData(jObj) {
if (jObj === undefined) {
return chars.missingChar;
} else if (jObj === null) {
return chars.nilChar;
} else if (
jObj.child &&
Object.keys(jObj.child).length === 0 &&
(!jObj.attrsMap || Object.keys(jObj.attrsMap).length === 0)
) {
return chars.emptyChar;
} else {
return true;
}
}
const x2j = require('./xmlstr2xmlnode');
const buildOptions = require('./util').buildOptions;
const convert2nimn = function(node, e_schema, options) {
options = buildOptions(options, x2j.defaultOptions, x2j.props);
return _e(node, e_schema, options);
};
exports.convert2nimn = convert2nimn;
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