Conditional Iteration on a parsed json object using each in groovy - groovy

Question

I'm trying to create an XML based on the data from a .json. So, my .json file looks something like:
{
"fruit1":
{
"name": "apple",
"quantity": "three",
"taste": "good",
"color": { "walmart": "{{red}}","tj": "{{green}}" }
},
"fruit2":
{
"name": "banana",
"quantity": "five",
"taste": "okay",
"color": { "walmart": "{{gmo}}","tj": "{{organic}}" }
}
}
I can create the XML just fine with the below code, from the above json
import groovy.xml.*
import groovy.json.JsonSlurper
def GenerateXML() {
def jsonSlurper = new JsonSlurper();
def fileReader = new BufferedReader(
new FileReader("/home/workspace/sample.json"))
def parsedData = jsonSlurper.parse(fileReader)
def writer = new FileWriter("sample.XML")
def builder = new StreamingMarkupBuilder()
builder.encoding = 'UTF-8'
writer << builder.bind {
mkp.xmlDeclaration()
"friuts"(version:'$number', application: "FunApp"){
delegate.deployables {
parsedData.each { index, obj ->
"fruit"(name:obj.name, quantity:obj.quantity) {
delegate.taste(obj.taste)
delegate.color {
obj.color.each { name, value ->
it.entry(key:name, value)
}
}
}
}
}
}
}
}
I want to extend this code, such that it looks for particular keys. And if they are present, the loop is performed for those maps as well and as such extends the resulting file.
So, if i have the JSON as like so:
{"fruit1":
{
"name": "apple",
"quantity": "three",
"taste": "good",
"color": { "walmart": "{{red}}","tj": "{{green}}" }
},
"fruit2":
{
"name": "banana",
"quantity": "five",
"taste": "okay",
"color": { "walmart": "{{gmo}}","tj": "{{organic}}" }
},
"chip1":
{
"name": "lays",
"quantity": "one",
"type": "baked"
},
"chip2":
{
"name": "somename",
"quantity": "one",
"type": "fried"
}
}
I want to add an IF, so that it check if any key(s) like 'chip*' is there. And if yes, perform another iteration. If not just skip that section of logic, and not throw any err. like this
import groovy.xml.*
import groovy.json.JsonSlurper
def GenerateXML() {
def jsonSlurper = new JsonSlurper();
def fileReader = new BufferedReader(
new FileReader("/home/okram/workspace/objectsRepo/sample.json"))
def parsedData = jsonSlurper.parse(fileReader)
def writer = new FileWriter("sample.XML")
def builder = new StreamingMarkupBuilder()
builder.encoding = 'UTF-8'
writer << builder.bind {
mkp.xmlDeclaration()
"fruits"(version:'$number', application: "FunApp"){
deployables {
parsedData.each { index, obj ->
"fruit"(name:obj.name, quantity:obj.quantity) {
taste(obj.taste)
color {
obj.color.each { name, value ->
it.entry(key:name, value)
}
}
}
}
}
}
if (parsedData.containsKey('chip*')){
//perform the iteration of the chip* maps
//to access the corresponding values
//below code fails, but that is the intent
parsedData.<onlyTheOnesPassing>.each { index1, obj1 ->
"Chips"(name:obj1.name, quantity:obj1.quantity) {
type(obj1.type)
}
}
}
}
}

Answer 1

I found the same dificult, but on Javascript language, if the logic help you, here what I made:
There are two ways:
You can use the library Lodash on the "get" here: Lodash get or the another one "has": Lodash has.
With they you can put the object and the path and check if there is one without getting any error.
Examples:
_.has(object, 'chip1.name');
// => false
_.has(object, 'fruit1');
// => true
Or you can put the code of the methods here:
// Recursively checks the nested properties of an object and returns the
// object property in case it exists.
static get(obj, key) {
return key.split(".").reduce(function (o, x) {
return (typeof o == "undefined" || o === null) ? o : o[x];
}, obj);
}
// Recursively checks the nested properties of an object and returns
//true in case it exists.
static has(obj, key) {
return key.split(".").every(function (x) {
if (typeof obj != "object" || obj === null || !x in obj)
return false;
obj = obj[x];
return true;
});
}
I hope it helps! :)