X++ Sample Collection Code

 

Collection classes were formerly called Foundation classes.

Class	Description	Data types	Access
List	Values are stored sequentially with the ability to add values at the beginning or end of the list	All values must be the same data type	Use ListIterator or ListEnumerator
Set	Values are stored non-sequentially. Duplicates are not added to the set.	All values must be the same data type	Use SetIterator or SetEnumerator
Map	Values are stored by using a unique key.	The key and the value need not be from the same data type.	Use MapIterator or MapEnumerator
Struct	Values are stored by using a unique string as a key	The key must be a string. The values can be of any type.	Provide the string key to the value method

    

internal final class CollectionJob

{

    

    /// <summary>

    /// Class entry point. The system will call this method when a designated menu 

    /// is selected when execution starts and this class is set as the startup class.

    /// </summary>

    /// <param name = "_args">The specified arguments.</param>

    public static void main(Args _args)

    {

        void printSET (Set setValue)

        {

            SetEnumerator _setEnumerator;

            _setEnumerator = setValue.getEnumerator();

            while(_setEnumerator.moveNext())

            {

                info(strFmt("%1",_setEnumerator.current()));

            }

        }

        //Sample List 

        List sampleList = new List(Types::AnyType);

        sampleList.addEnd(1);

        sampleList.addEnd(2);

        sampleList.addStart(3);

        sampleList.addEnd(4);

        ListEnumerator _listenumerator ;

        _listenumerator = sampleList.getEnumerator();

        info("----------------LIST START--------------------------");

        while(_listenumerator.moveNext())

        {

            info(strFmt("%1",_listenumerator.current()));

        }

        info("----------------LIST END--------------------------");

        //Sample Set

        Set sampleSet1 = new Set(Types::AnyType);

        Set sampleSet2 = new Set(Types::AnyType);

        sampleSet1.add(1);

        sampleSet1.add(2);

        sampleSet1.add(3);

        sampleSet2.add(2);

        sampleSet2.add(1);

        sampleSet2.add(4);        

        

        info("----------------SET START--------------------------");

        printSET(sampleSet1);

        printSET(sampleSet2);

        printSET(Set::difference(sampleSet1,sampleSet2));

        printSET(Set::union(sampleSet1,sampleSet2));

        printSET(Set::intersection(sampleSet1,sampleSet2));

        info("----------------SET END--------------------------");

       //Sample Map

        Map sampleMap = new Map(Types::AnyType,Types::AnyType);

        sampleMap.insert(1,"A");

        sampleMap.insert(3,"C");

        sampleMap.insert(4,"D");

        sampleMap.insert(2,"B");

        sampleMap.insert(6,"F");

        sampleMap.insert(5,"E");

        MapEnumerator _mapEnumerator ;

        _mapEnumerator = sampleMap.getEnumerator();

        while(_mapEnumerator.moveNext())

        {

            info(" KEY %1",_mapEnumerator.currentKey());

            info(" KEY %1",_mapEnumerator.currentValue());

        }

        info(strFmt("Does 4 exist? %1",sampleMap.exists(4)));

        info(strFmt("Does E exist? %1",sampleMap.exists(5)));

        sampleMap.lookup(6);

        sampleMap.lookup(1);

        //Sample Struct 

        container contaioner;

        Struct unZipStruct;

        Struct sampleStruct = new Struct(Types::AnyType,Types::AnyType);

        sampleStruct.value("Employee FName","Muthu");

        sampleStruct.value("Employee LName","Pandi");

        sampleStruct.value("Employee Age",25);

        sampleStruct.Add("Employee Exp",10);

        contaioner = sampleStruct.pack();

        unZipStruct = Struct::create(contaioner);

        // Prints the type and name of all items in the struct

        for (int i =  1;   i <= sampleStruct.fields();i++)

        {

            print sampleStruct.fieldType(i), " ", sampleStruct.fieldName(i);

        }

        // Prints the type and name of all items in the struct

        for (int i =  1;   i <= unZipStruct.fields();i++)

        {

            print unZipStruct.fieldType(i), " ", unZipStruct.fieldName(i);

        }

    }

}