How to create a recursive method in Apex which takes a dot notation string and convert it into Hierarchical...











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I'm trying to create a utility class/method where a certain method will accept a list of Strings - each string will be constructed as follows:



"Root.Parent.Child... N"


This string can be N long (or basically holds infinite number of parts).



Each Part of the String (parts are the split string by dot) is intended to be a Json Object.



For Example:



  //sample data
String rec1 = 'Root.Parent.FirstChild';
String rec2 = 'Root.Parent.FirstChild2';
String rec3 = 'Root.Parent2.Child';
String rec4 = 'Root.Parent2.Child2';
String fullPathsList = new List<String>{ rec1,rec2,rec3,rec4 };

//should create as many maps as needed dynamically based on total size of string paths
Map<String,Object> output = new Map<String,Object>();
Map<String,Object> root = new Map<String,Object>();
Map<String,Object> level1 = new Map<String,Object>();
Map<String,Object> level2 = new Map<String,Object>();

//iterate over the full list and grab each path
for(String fullJsonPath:fullPathsList ) {
//check if has a dot
if( fullJsonPath.indexOf('.') != -1 ){
String pathPartsList = fullJsonPath.split('\.');
Integer totalSize = pathPartsList.size();
for(Integer i=0;i<totalSize;i++) {
level2.put(pathPartsList[totalSize-1] , 'VALUE');
if(totalSize-2 > 0){
level1.put(pathPartsList[totalSize-2], level2);
}
root.put(pathPartsList[0], level1);
}
}
output.put('results', root);
}

System.debug('@@@ output ' + JSON.serialize(output));


The output will show :



{ "results": {
"Root": {
"Parent2": {
"Child2": "VALUE",
"Child": "VALUE",
"FirstChild2": "VALUE",
"FirstChild": "VALUE"
},
"Parent": {
"Child2": "VALUE",
"Child": "VALUE",
"FirstChild2": "VALUE",
"FirstChild": "VALUE"
}
}
}
}


My problems here is :




  1. The level 2 map is holding all childs - each parent holds all childs
    and not only it's own.

  2. I need to have an ability to generate those Maps dynamically based on the number of childs the strings have - was thinking some
    kind of a recursion method will do the trick.


Anybody see a clever way of achieving this in Apex?



In Javascript it's pretty simple with this one liner which I'm trying to replicate somehow in Apex (any equivalent reduce method?) :



'Root.Parent.FirstChild'.split('.').reduce((o,i)=>o[i], obj);









share|improve this question


























    up vote
    7
    down vote

    favorite
    1












    I'm trying to create a utility class/method where a certain method will accept a list of Strings - each string will be constructed as follows:



    "Root.Parent.Child... N"


    This string can be N long (or basically holds infinite number of parts).



    Each Part of the String (parts are the split string by dot) is intended to be a Json Object.



    For Example:



      //sample data
    String rec1 = 'Root.Parent.FirstChild';
    String rec2 = 'Root.Parent.FirstChild2';
    String rec3 = 'Root.Parent2.Child';
    String rec4 = 'Root.Parent2.Child2';
    String fullPathsList = new List<String>{ rec1,rec2,rec3,rec4 };

    //should create as many maps as needed dynamically based on total size of string paths
    Map<String,Object> output = new Map<String,Object>();
    Map<String,Object> root = new Map<String,Object>();
    Map<String,Object> level1 = new Map<String,Object>();
    Map<String,Object> level2 = new Map<String,Object>();

    //iterate over the full list and grab each path
    for(String fullJsonPath:fullPathsList ) {
    //check if has a dot
    if( fullJsonPath.indexOf('.') != -1 ){
    String pathPartsList = fullJsonPath.split('\.');
    Integer totalSize = pathPartsList.size();
    for(Integer i=0;i<totalSize;i++) {
    level2.put(pathPartsList[totalSize-1] , 'VALUE');
    if(totalSize-2 > 0){
    level1.put(pathPartsList[totalSize-2], level2);
    }
    root.put(pathPartsList[0], level1);
    }
    }
    output.put('results', root);
    }

    System.debug('@@@ output ' + JSON.serialize(output));


    The output will show :



    { "results": {
    "Root": {
    "Parent2": {
    "Child2": "VALUE",
    "Child": "VALUE",
    "FirstChild2": "VALUE",
    "FirstChild": "VALUE"
    },
    "Parent": {
    "Child2": "VALUE",
    "Child": "VALUE",
    "FirstChild2": "VALUE",
    "FirstChild": "VALUE"
    }
    }
    }
    }


    My problems here is :




    1. The level 2 map is holding all childs - each parent holds all childs
      and not only it's own.

    2. I need to have an ability to generate those Maps dynamically based on the number of childs the strings have - was thinking some
      kind of a recursion method will do the trick.


    Anybody see a clever way of achieving this in Apex?



    In Javascript it's pretty simple with this one liner which I'm trying to replicate somehow in Apex (any equivalent reduce method?) :



    'Root.Parent.FirstChild'.split('.').reduce((o,i)=>o[i], obj);









    share|improve this question
























      up vote
      7
      down vote

      favorite
      1









      up vote
      7
      down vote

      favorite
      1






      1





      I'm trying to create a utility class/method where a certain method will accept a list of Strings - each string will be constructed as follows:



      "Root.Parent.Child... N"


      This string can be N long (or basically holds infinite number of parts).



      Each Part of the String (parts are the split string by dot) is intended to be a Json Object.



      For Example:



        //sample data
      String rec1 = 'Root.Parent.FirstChild';
      String rec2 = 'Root.Parent.FirstChild2';
      String rec3 = 'Root.Parent2.Child';
      String rec4 = 'Root.Parent2.Child2';
      String fullPathsList = new List<String>{ rec1,rec2,rec3,rec4 };

      //should create as many maps as needed dynamically based on total size of string paths
      Map<String,Object> output = new Map<String,Object>();
      Map<String,Object> root = new Map<String,Object>();
      Map<String,Object> level1 = new Map<String,Object>();
      Map<String,Object> level2 = new Map<String,Object>();

      //iterate over the full list and grab each path
      for(String fullJsonPath:fullPathsList ) {
      //check if has a dot
      if( fullJsonPath.indexOf('.') != -1 ){
      String pathPartsList = fullJsonPath.split('\.');
      Integer totalSize = pathPartsList.size();
      for(Integer i=0;i<totalSize;i++) {
      level2.put(pathPartsList[totalSize-1] , 'VALUE');
      if(totalSize-2 > 0){
      level1.put(pathPartsList[totalSize-2], level2);
      }
      root.put(pathPartsList[0], level1);
      }
      }
      output.put('results', root);
      }

      System.debug('@@@ output ' + JSON.serialize(output));


      The output will show :



      { "results": {
      "Root": {
      "Parent2": {
      "Child2": "VALUE",
      "Child": "VALUE",
      "FirstChild2": "VALUE",
      "FirstChild": "VALUE"
      },
      "Parent": {
      "Child2": "VALUE",
      "Child": "VALUE",
      "FirstChild2": "VALUE",
      "FirstChild": "VALUE"
      }
      }
      }
      }


      My problems here is :




      1. The level 2 map is holding all childs - each parent holds all childs
        and not only it's own.

      2. I need to have an ability to generate those Maps dynamically based on the number of childs the strings have - was thinking some
        kind of a recursion method will do the trick.


      Anybody see a clever way of achieving this in Apex?



      In Javascript it's pretty simple with this one liner which I'm trying to replicate somehow in Apex (any equivalent reduce method?) :



      'Root.Parent.FirstChild'.split('.').reduce((o,i)=>o[i], obj);









      share|improve this question













      I'm trying to create a utility class/method where a certain method will accept a list of Strings - each string will be constructed as follows:



      "Root.Parent.Child... N"


      This string can be N long (or basically holds infinite number of parts).



      Each Part of the String (parts are the split string by dot) is intended to be a Json Object.



      For Example:



        //sample data
      String rec1 = 'Root.Parent.FirstChild';
      String rec2 = 'Root.Parent.FirstChild2';
      String rec3 = 'Root.Parent2.Child';
      String rec4 = 'Root.Parent2.Child2';
      String fullPathsList = new List<String>{ rec1,rec2,rec3,rec4 };

      //should create as many maps as needed dynamically based on total size of string paths
      Map<String,Object> output = new Map<String,Object>();
      Map<String,Object> root = new Map<String,Object>();
      Map<String,Object> level1 = new Map<String,Object>();
      Map<String,Object> level2 = new Map<String,Object>();

      //iterate over the full list and grab each path
      for(String fullJsonPath:fullPathsList ) {
      //check if has a dot
      if( fullJsonPath.indexOf('.') != -1 ){
      String pathPartsList = fullJsonPath.split('\.');
      Integer totalSize = pathPartsList.size();
      for(Integer i=0;i<totalSize;i++) {
      level2.put(pathPartsList[totalSize-1] , 'VALUE');
      if(totalSize-2 > 0){
      level1.put(pathPartsList[totalSize-2], level2);
      }
      root.put(pathPartsList[0], level1);
      }
      }
      output.put('results', root);
      }

      System.debug('@@@ output ' + JSON.serialize(output));


      The output will show :



      { "results": {
      "Root": {
      "Parent2": {
      "Child2": "VALUE",
      "Child": "VALUE",
      "FirstChild2": "VALUE",
      "FirstChild": "VALUE"
      },
      "Parent": {
      "Child2": "VALUE",
      "Child": "VALUE",
      "FirstChild2": "VALUE",
      "FirstChild": "VALUE"
      }
      }
      }
      }


      My problems here is :




      1. The level 2 map is holding all childs - each parent holds all childs
        and not only it's own.

      2. I need to have an ability to generate those Maps dynamically based on the number of childs the strings have - was thinking some
        kind of a recursion method will do the trick.


      Anybody see a clever way of achieving this in Apex?



      In Javascript it's pretty simple with this one liner which I'm trying to replicate somehow in Apex (any equivalent reduce method?) :



      'Root.Parent.FirstChild'.split('.').reduce((o,i)=>o[i], obj);






      apex json






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Nov 30 at 11:58









      sfdx bomb

      640614




      640614






















          3 Answers
          3






          active

          oldest

          votes

















          up vote
          3
          down vote



          accepted










          I've done exactly this before. Here's working code for it:



          public class JsonBoxer {

          public Map<String, Object> root {get; private set;}

          public JsonBoxer() {
          this.root = new Map<String, Object>();
          }

          public void put(String key, Object value) {
          doPut(root, key.split('\.'), value);
          }

          private void doPut(Map<String, Object> currentRoot, List<String> keyChain, Object value) {
          if(keyChain.size() == 1) {
          currentRoot.put(keyChain[0], value);
          } else {
          String thisKey = keyChain.remove(0);
          Map<String, Object> child = (Map<String, Object>)currentRoot.get(thisKey);
          if(child == null) {
          child = new Map<String, Object>();
          currentRoot.put(thisKey, child);
          }

          doPut(child, keyChain, value);
          }
          }
          }


          Even with a test:



          @IsTest
          private class JsonBoxerTest {

          @IsTest static void noBoxing() {
          JsonBoxer boxer = new JsonBoxer();

          boxer.put('a', 'b');

          System.assertEquals('b', boxer.root.get('a'));
          }

          @IsTest static void boxing() {
          JsonBoxer boxer = new JsonBoxer();

          boxer.put('a.1', 'b');

          System.assertEquals('b', ((Map<String, Object>)boxer.root.get('a')).get('1'));
          }

          @IsTest static void twoSubKeyValues() {
          JsonBoxer boxer = new JsonBoxer();

          boxer.put('a.1', 'b');
          boxer.put('a.2', 'c');

          System.assertEquals('b', ((Map<String, Object>)boxer.root.get('a')).get('1'));
          System.assertEquals('c', ((Map<String, Object>)boxer.root.get('a')).get('2'));
          }

          @IsTest static void overwriteSubKey() {
          JsonBoxer boxer = new JsonBoxer();

          boxer.put('a.1', 'b');
          boxer.put('a.1', 'c');

          System.assertEquals('c', ((Map<String, Object>)boxer.root.get('a')).get('1'));
          }
          }





          share|improve this answer




























            up vote
            4
            down vote













            Something like This probably



            public with sharing class MyClass {

            public static Map<String, Object> get(String input) {

            if (input == null) return null;
            if (!input.contains('.')) return new Map<String, Object>{input => null};

            return new Map<String, Object>{
            input.substringBefore('.') => get(input.substringAfter('.'))
            };

            }
            }


            Then executing:



            System.debug(JSON.serialize(MyClass.get('Root.Parent.FirstChild')));


            Output : {"Root":{"Parent":{"FirstChild":null}}






            share|improve this answer




























              up vote
              3
              down vote













              One of the approaches would be create a inner wrapper class for Map, and define own method to set value based on path.



              Most of the code is already written in your question, so check the following pseudo-code:



              public class SuperMap {
              Map<String, Object> ResultMap;

              public SuperMap() {
              ResultMap = new Map<String, Object>();
              }

              public void specifyValue(String path, Object value) {
              Map<String, Object> current_map = ResultMap;
              List<String> path_steps = path.split('\.');
              for(Integer i = 0; i < path_steps.size() - 1; i++) {
              String step = path_steps.get(i);
              if (!current_map.containsKey(step)) {
              current_map.put(step, (Object)new Map<String, Object>());
              }
              current_map = (Map<String, Object>)current_map.get(step);
              }
              current_map.put(path_steps.get(path_steps.size() - 1), value);
              }
              public String returnString() {
              return JSON.serialize(ResultMap);
              }
              }


              Example of usage:



              SuperMap mp = new SuperMap();
              mp.specifyValue('kuru.123.dev','Data');
              mp.specifyValue('grey.123.dev2','Data2');
              mp.specifyValue('grey.123.dev2','Data3');
              System.debug(mp.returnString());





              share|improve this answer





















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                3 Answers
                3






                active

                oldest

                votes








                3 Answers
                3






                active

                oldest

                votes









                active

                oldest

                votes






                active

                oldest

                votes








                up vote
                3
                down vote



                accepted










                I've done exactly this before. Here's working code for it:



                public class JsonBoxer {

                public Map<String, Object> root {get; private set;}

                public JsonBoxer() {
                this.root = new Map<String, Object>();
                }

                public void put(String key, Object value) {
                doPut(root, key.split('\.'), value);
                }

                private void doPut(Map<String, Object> currentRoot, List<String> keyChain, Object value) {
                if(keyChain.size() == 1) {
                currentRoot.put(keyChain[0], value);
                } else {
                String thisKey = keyChain.remove(0);
                Map<String, Object> child = (Map<String, Object>)currentRoot.get(thisKey);
                if(child == null) {
                child = new Map<String, Object>();
                currentRoot.put(thisKey, child);
                }

                doPut(child, keyChain, value);
                }
                }
                }


                Even with a test:



                @IsTest
                private class JsonBoxerTest {

                @IsTest static void noBoxing() {
                JsonBoxer boxer = new JsonBoxer();

                boxer.put('a', 'b');

                System.assertEquals('b', boxer.root.get('a'));
                }

                @IsTest static void boxing() {
                JsonBoxer boxer = new JsonBoxer();

                boxer.put('a.1', 'b');

                System.assertEquals('b', ((Map<String, Object>)boxer.root.get('a')).get('1'));
                }

                @IsTest static void twoSubKeyValues() {
                JsonBoxer boxer = new JsonBoxer();

                boxer.put('a.1', 'b');
                boxer.put('a.2', 'c');

                System.assertEquals('b', ((Map<String, Object>)boxer.root.get('a')).get('1'));
                System.assertEquals('c', ((Map<String, Object>)boxer.root.get('a')).get('2'));
                }

                @IsTest static void overwriteSubKey() {
                JsonBoxer boxer = new JsonBoxer();

                boxer.put('a.1', 'b');
                boxer.put('a.1', 'c');

                System.assertEquals('c', ((Map<String, Object>)boxer.root.get('a')).get('1'));
                }
                }





                share|improve this answer

























                  up vote
                  3
                  down vote



                  accepted










                  I've done exactly this before. Here's working code for it:



                  public class JsonBoxer {

                  public Map<String, Object> root {get; private set;}

                  public JsonBoxer() {
                  this.root = new Map<String, Object>();
                  }

                  public void put(String key, Object value) {
                  doPut(root, key.split('\.'), value);
                  }

                  private void doPut(Map<String, Object> currentRoot, List<String> keyChain, Object value) {
                  if(keyChain.size() == 1) {
                  currentRoot.put(keyChain[0], value);
                  } else {
                  String thisKey = keyChain.remove(0);
                  Map<String, Object> child = (Map<String, Object>)currentRoot.get(thisKey);
                  if(child == null) {
                  child = new Map<String, Object>();
                  currentRoot.put(thisKey, child);
                  }

                  doPut(child, keyChain, value);
                  }
                  }
                  }


                  Even with a test:



                  @IsTest
                  private class JsonBoxerTest {

                  @IsTest static void noBoxing() {
                  JsonBoxer boxer = new JsonBoxer();

                  boxer.put('a', 'b');

                  System.assertEquals('b', boxer.root.get('a'));
                  }

                  @IsTest static void boxing() {
                  JsonBoxer boxer = new JsonBoxer();

                  boxer.put('a.1', 'b');

                  System.assertEquals('b', ((Map<String, Object>)boxer.root.get('a')).get('1'));
                  }

                  @IsTest static void twoSubKeyValues() {
                  JsonBoxer boxer = new JsonBoxer();

                  boxer.put('a.1', 'b');
                  boxer.put('a.2', 'c');

                  System.assertEquals('b', ((Map<String, Object>)boxer.root.get('a')).get('1'));
                  System.assertEquals('c', ((Map<String, Object>)boxer.root.get('a')).get('2'));
                  }

                  @IsTest static void overwriteSubKey() {
                  JsonBoxer boxer = new JsonBoxer();

                  boxer.put('a.1', 'b');
                  boxer.put('a.1', 'c');

                  System.assertEquals('c', ((Map<String, Object>)boxer.root.get('a')).get('1'));
                  }
                  }





                  share|improve this answer























                    up vote
                    3
                    down vote



                    accepted







                    up vote
                    3
                    down vote



                    accepted






                    I've done exactly this before. Here's working code for it:



                    public class JsonBoxer {

                    public Map<String, Object> root {get; private set;}

                    public JsonBoxer() {
                    this.root = new Map<String, Object>();
                    }

                    public void put(String key, Object value) {
                    doPut(root, key.split('\.'), value);
                    }

                    private void doPut(Map<String, Object> currentRoot, List<String> keyChain, Object value) {
                    if(keyChain.size() == 1) {
                    currentRoot.put(keyChain[0], value);
                    } else {
                    String thisKey = keyChain.remove(0);
                    Map<String, Object> child = (Map<String, Object>)currentRoot.get(thisKey);
                    if(child == null) {
                    child = new Map<String, Object>();
                    currentRoot.put(thisKey, child);
                    }

                    doPut(child, keyChain, value);
                    }
                    }
                    }


                    Even with a test:



                    @IsTest
                    private class JsonBoxerTest {

                    @IsTest static void noBoxing() {
                    JsonBoxer boxer = new JsonBoxer();

                    boxer.put('a', 'b');

                    System.assertEquals('b', boxer.root.get('a'));
                    }

                    @IsTest static void boxing() {
                    JsonBoxer boxer = new JsonBoxer();

                    boxer.put('a.1', 'b');

                    System.assertEquals('b', ((Map<String, Object>)boxer.root.get('a')).get('1'));
                    }

                    @IsTest static void twoSubKeyValues() {
                    JsonBoxer boxer = new JsonBoxer();

                    boxer.put('a.1', 'b');
                    boxer.put('a.2', 'c');

                    System.assertEquals('b', ((Map<String, Object>)boxer.root.get('a')).get('1'));
                    System.assertEquals('c', ((Map<String, Object>)boxer.root.get('a')).get('2'));
                    }

                    @IsTest static void overwriteSubKey() {
                    JsonBoxer boxer = new JsonBoxer();

                    boxer.put('a.1', 'b');
                    boxer.put('a.1', 'c');

                    System.assertEquals('c', ((Map<String, Object>)boxer.root.get('a')).get('1'));
                    }
                    }





                    share|improve this answer












                    I've done exactly this before. Here's working code for it:



                    public class JsonBoxer {

                    public Map<String, Object> root {get; private set;}

                    public JsonBoxer() {
                    this.root = new Map<String, Object>();
                    }

                    public void put(String key, Object value) {
                    doPut(root, key.split('\.'), value);
                    }

                    private void doPut(Map<String, Object> currentRoot, List<String> keyChain, Object value) {
                    if(keyChain.size() == 1) {
                    currentRoot.put(keyChain[0], value);
                    } else {
                    String thisKey = keyChain.remove(0);
                    Map<String, Object> child = (Map<String, Object>)currentRoot.get(thisKey);
                    if(child == null) {
                    child = new Map<String, Object>();
                    currentRoot.put(thisKey, child);
                    }

                    doPut(child, keyChain, value);
                    }
                    }
                    }


                    Even with a test:



                    @IsTest
                    private class JsonBoxerTest {

                    @IsTest static void noBoxing() {
                    JsonBoxer boxer = new JsonBoxer();

                    boxer.put('a', 'b');

                    System.assertEquals('b', boxer.root.get('a'));
                    }

                    @IsTest static void boxing() {
                    JsonBoxer boxer = new JsonBoxer();

                    boxer.put('a.1', 'b');

                    System.assertEquals('b', ((Map<String, Object>)boxer.root.get('a')).get('1'));
                    }

                    @IsTest static void twoSubKeyValues() {
                    JsonBoxer boxer = new JsonBoxer();

                    boxer.put('a.1', 'b');
                    boxer.put('a.2', 'c');

                    System.assertEquals('b', ((Map<String, Object>)boxer.root.get('a')).get('1'));
                    System.assertEquals('c', ((Map<String, Object>)boxer.root.get('a')).get('2'));
                    }

                    @IsTest static void overwriteSubKey() {
                    JsonBoxer boxer = new JsonBoxer();

                    boxer.put('a.1', 'b');
                    boxer.put('a.1', 'c');

                    System.assertEquals('c', ((Map<String, Object>)boxer.root.get('a')).get('1'));
                    }
                    }






                    share|improve this answer












                    share|improve this answer



                    share|improve this answer










                    answered Nov 30 at 15:36









                    Aidan

                    6,725942




                    6,725942
























                        up vote
                        4
                        down vote













                        Something like This probably



                        public with sharing class MyClass {

                        public static Map<String, Object> get(String input) {

                        if (input == null) return null;
                        if (!input.contains('.')) return new Map<String, Object>{input => null};

                        return new Map<String, Object>{
                        input.substringBefore('.') => get(input.substringAfter('.'))
                        };

                        }
                        }


                        Then executing:



                        System.debug(JSON.serialize(MyClass.get('Root.Parent.FirstChild')));


                        Output : {"Root":{"Parent":{"FirstChild":null}}






                        share|improve this answer

























                          up vote
                          4
                          down vote













                          Something like This probably



                          public with sharing class MyClass {

                          public static Map<String, Object> get(String input) {

                          if (input == null) return null;
                          if (!input.contains('.')) return new Map<String, Object>{input => null};

                          return new Map<String, Object>{
                          input.substringBefore('.') => get(input.substringAfter('.'))
                          };

                          }
                          }


                          Then executing:



                          System.debug(JSON.serialize(MyClass.get('Root.Parent.FirstChild')));


                          Output : {"Root":{"Parent":{"FirstChild":null}}






                          share|improve this answer























                            up vote
                            4
                            down vote










                            up vote
                            4
                            down vote









                            Something like This probably



                            public with sharing class MyClass {

                            public static Map<String, Object> get(String input) {

                            if (input == null) return null;
                            if (!input.contains('.')) return new Map<String, Object>{input => null};

                            return new Map<String, Object>{
                            input.substringBefore('.') => get(input.substringAfter('.'))
                            };

                            }
                            }


                            Then executing:



                            System.debug(JSON.serialize(MyClass.get('Root.Parent.FirstChild')));


                            Output : {"Root":{"Parent":{"FirstChild":null}}






                            share|improve this answer












                            Something like This probably



                            public with sharing class MyClass {

                            public static Map<String, Object> get(String input) {

                            if (input == null) return null;
                            if (!input.contains('.')) return new Map<String, Object>{input => null};

                            return new Map<String, Object>{
                            input.substringBefore('.') => get(input.substringAfter('.'))
                            };

                            }
                            }


                            Then executing:



                            System.debug(JSON.serialize(MyClass.get('Root.Parent.FirstChild')));


                            Output : {"Root":{"Parent":{"FirstChild":null}}







                            share|improve this answer












                            share|improve this answer



                            share|improve this answer










                            answered Nov 30 at 12:32









                            Pranay Jaiswal

                            12.9k32251




                            12.9k32251






















                                up vote
                                3
                                down vote













                                One of the approaches would be create a inner wrapper class for Map, and define own method to set value based on path.



                                Most of the code is already written in your question, so check the following pseudo-code:



                                public class SuperMap {
                                Map<String, Object> ResultMap;

                                public SuperMap() {
                                ResultMap = new Map<String, Object>();
                                }

                                public void specifyValue(String path, Object value) {
                                Map<String, Object> current_map = ResultMap;
                                List<String> path_steps = path.split('\.');
                                for(Integer i = 0; i < path_steps.size() - 1; i++) {
                                String step = path_steps.get(i);
                                if (!current_map.containsKey(step)) {
                                current_map.put(step, (Object)new Map<String, Object>());
                                }
                                current_map = (Map<String, Object>)current_map.get(step);
                                }
                                current_map.put(path_steps.get(path_steps.size() - 1), value);
                                }
                                public String returnString() {
                                return JSON.serialize(ResultMap);
                                }
                                }


                                Example of usage:



                                SuperMap mp = new SuperMap();
                                mp.specifyValue('kuru.123.dev','Data');
                                mp.specifyValue('grey.123.dev2','Data2');
                                mp.specifyValue('grey.123.dev2','Data3');
                                System.debug(mp.returnString());





                                share|improve this answer

























                                  up vote
                                  3
                                  down vote













                                  One of the approaches would be create a inner wrapper class for Map, and define own method to set value based on path.



                                  Most of the code is already written in your question, so check the following pseudo-code:



                                  public class SuperMap {
                                  Map<String, Object> ResultMap;

                                  public SuperMap() {
                                  ResultMap = new Map<String, Object>();
                                  }

                                  public void specifyValue(String path, Object value) {
                                  Map<String, Object> current_map = ResultMap;
                                  List<String> path_steps = path.split('\.');
                                  for(Integer i = 0; i < path_steps.size() - 1; i++) {
                                  String step = path_steps.get(i);
                                  if (!current_map.containsKey(step)) {
                                  current_map.put(step, (Object)new Map<String, Object>());
                                  }
                                  current_map = (Map<String, Object>)current_map.get(step);
                                  }
                                  current_map.put(path_steps.get(path_steps.size() - 1), value);
                                  }
                                  public String returnString() {
                                  return JSON.serialize(ResultMap);
                                  }
                                  }


                                  Example of usage:



                                  SuperMap mp = new SuperMap();
                                  mp.specifyValue('kuru.123.dev','Data');
                                  mp.specifyValue('grey.123.dev2','Data2');
                                  mp.specifyValue('grey.123.dev2','Data3');
                                  System.debug(mp.returnString());





                                  share|improve this answer























                                    up vote
                                    3
                                    down vote










                                    up vote
                                    3
                                    down vote









                                    One of the approaches would be create a inner wrapper class for Map, and define own method to set value based on path.



                                    Most of the code is already written in your question, so check the following pseudo-code:



                                    public class SuperMap {
                                    Map<String, Object> ResultMap;

                                    public SuperMap() {
                                    ResultMap = new Map<String, Object>();
                                    }

                                    public void specifyValue(String path, Object value) {
                                    Map<String, Object> current_map = ResultMap;
                                    List<String> path_steps = path.split('\.');
                                    for(Integer i = 0; i < path_steps.size() - 1; i++) {
                                    String step = path_steps.get(i);
                                    if (!current_map.containsKey(step)) {
                                    current_map.put(step, (Object)new Map<String, Object>());
                                    }
                                    current_map = (Map<String, Object>)current_map.get(step);
                                    }
                                    current_map.put(path_steps.get(path_steps.size() - 1), value);
                                    }
                                    public String returnString() {
                                    return JSON.serialize(ResultMap);
                                    }
                                    }


                                    Example of usage:



                                    SuperMap mp = new SuperMap();
                                    mp.specifyValue('kuru.123.dev','Data');
                                    mp.specifyValue('grey.123.dev2','Data2');
                                    mp.specifyValue('grey.123.dev2','Data3');
                                    System.debug(mp.returnString());





                                    share|improve this answer












                                    One of the approaches would be create a inner wrapper class for Map, and define own method to set value based on path.



                                    Most of the code is already written in your question, so check the following pseudo-code:



                                    public class SuperMap {
                                    Map<String, Object> ResultMap;

                                    public SuperMap() {
                                    ResultMap = new Map<String, Object>();
                                    }

                                    public void specifyValue(String path, Object value) {
                                    Map<String, Object> current_map = ResultMap;
                                    List<String> path_steps = path.split('\.');
                                    for(Integer i = 0; i < path_steps.size() - 1; i++) {
                                    String step = path_steps.get(i);
                                    if (!current_map.containsKey(step)) {
                                    current_map.put(step, (Object)new Map<String, Object>());
                                    }
                                    current_map = (Map<String, Object>)current_map.get(step);
                                    }
                                    current_map.put(path_steps.get(path_steps.size() - 1), value);
                                    }
                                    public String returnString() {
                                    return JSON.serialize(ResultMap);
                                    }
                                    }


                                    Example of usage:



                                    SuperMap mp = new SuperMap();
                                    mp.specifyValue('kuru.123.dev','Data');
                                    mp.specifyValue('grey.123.dev2','Data2');
                                    mp.specifyValue('grey.123.dev2','Data3');
                                    System.debug(mp.returnString());






                                    share|improve this answer












                                    share|improve this answer



                                    share|improve this answer










                                    answered Nov 30 at 12:28









                                    kurunve

                                    2,39021022




                                    2,39021022






























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