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Convert hashmap to simple object in Groovy

By : Gunwant Koli
Date : October 17 2020, 06:10 PM
hope this fix your issue In groovy you can programmatically add new properties to any object through the object's metaClass:
code :
Object mapped = new Object()
mapped.metaClass."myNewProperty" = valueObj
assert mapped.myNewProperty.equals(valueObj) 
import java.time.LocalDateTime

Map properties = [enable_api_security: false, owner: 'Hello', time: LocalDateTime.now()]

Object enhanced = new Object()
properties.each { key, value -> 
    enhanced.metaClass."$key" = value

println enhanced.enable_api_security
println enhanced.owner
println enhanced.time

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Convert Hashmap with simple, indexed, nested, or combined type attributes as keys into a Java Bean

By : Michael C.
Date : March 29 2020, 07:55 AM
To fix the issue you can do BeanUtils don't create objects instances for you inside axNew instance. So, calling
code :
BeanUtils.setProperty(axNew, "bxs[0].cxs[0].cxAttr", "Some value"); 
axNew.setBxs(new ArrayList<Bx>());
axNew.getBsx().add(new Bx());
// should works fine
BeanUtils.setProperty(axNew, "bxs[0].bxAttr", "Some value"); 

How to Convert Stream Stream<HashMap<String, Object>> to HashMap Array HashMap<String, Object>[]?

By : kchandra
Date : March 29 2020, 07:55 AM
should help you out The following should work. Unfortunately, you have to suppress the unchecked warning.
code :
HashMap<String, Object>[] arr = imagesStream.toArray(HashMap[]::new);
@SuppressWarnings({"unchecked", "rawtypes"})
HashMap<String, Object>[] array = stream.toArray(n -> new HashMap[n]);
@SuppressWarnings({"unchecked", "rawtypes"})
HashMap<String, Object>[] array = stream.toArray(new IntFunction<HashMap[]>() {
    public HashMap[] apply(int n) {
        return new HashMap[n];

How to convert simple groovy script to lucene expression (or use different method)?

By : user3212912
Date : March 29 2020, 07:55 AM
will be helpful for those in need Just an attempt, it should be a pretty general approach though. Use a function_score to define your own filters that should be rated differently, based on the value of user.roles field. In my example, I think you should replace "match_all": {} with whatever you have under query (this is the reason why I asked about the full query):
code :
  "query": {
    "function_score": {
      "query": {
        "match_all": {}
      "functions": [
          "filter": {
            "term": {
              "user.roles": "contributor"
          "weight": 1
          "filter": {
            "bool": {
              "must_not": [
                  "term": {
                    "user.roles": "contributor"
          "weight": 2
      "boost_mode": "replace"
  "sort": [
      "_score": {
        "order": "asc"

How does one convert a simple program to a HashMap in Java?

By : brewster
Date : March 29 2020, 07:55 AM
help you fix your problem You need to first understand what a map is and what / how does it store data.. once you are there, you will get answer to your problem.. just look at argument list for Map.put(key k, value v)

Groovy: Convert string with simple \

By : SherLuck
Date : March 29 2020, 07:55 AM
hop of those help? I'm trying to convert a string I dynamically get, to double the \ or convert them as / (both are ok for me). , Dollar slashy string and Slashy string both allow backslashes.
code :
def s1 = /d:\code/
def s2 = $/d:\code/$
s1.equals(s2) // true
def s3 = /This - \/ - is the forward slash/ 
// This - / - is the forward slash
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