Reg: remove duplicate values

[Former Member]

Hi,

What is the best way to remove duplicate values in a webdynpro context.

Thanks in advance.

Jyothi.

[former_member182534 · Accepted solution]

Hi,

Well its very simple hash may takes unique value only so all duplicate value will be eliminated

Regards ,

Piyas

[Former Member · Accepted solution]

can you give me sample code how to put node context values into a hash map?

[Former Member · Accepted solution]

Hi,

Traverse your node and get the value like the below

HashSet set = new HashSet();

for ( int i = 0 ; i < wdContext.node<>.size(); i++)

{

String attrib = wdContext.node< Your Node> ().get<Your Node>ElementAt(i).get<Attribute>();

set.add(attrib);

}

HashSet will remove the duplicates and again you can traverse the HashSet and put back the valid set to the contextnode.

Regards,

Saravanan K

[Former Member · Accepted solution]

Hi,

Please have a look at this thread as well

Regards,

Saravanan K

[Former Member · Accepted solution]

Saravanan,

I had used the code to hashset given by you. Can you pls tell me how can i retrieve each value from hash set.

Thanks in adnvance.

[Former Member · Accepted solution]

Hi,

Iterator iterator =set.iterator();

while(iterator.hasNext()) {

String variable = iterator.next().toString();

}

Regards,

Saravanan K

[Former Member]

Due to some problem the message came 2 -3 times.

[Former Member]

Hi,

You can use the follwing pice of code for removing Duplicate elements.

Here i am using two node's Node Info for storing All values (with duplicate values) and node Info_copy for storing values without duplicate.

ArrayList al=new ArrayList();

al.add("Trilochan");

al.add("Trilochan");

al.add("Trilochan");

al.add("Pramod");

al.add("Pramod");

al.add("Lokesh");

int size=al.size();

//==============Store all values==============

for(int i=0;i<size;i++){

IPrivateRemoveappView.IInfoElement ele=wdContext.nodeInfo().createInfoElement();

Object obj=al.get(i);

ele.setName(obj.toString());

wdContext.nodeInfo().addElement(ele);

}

LinkedHashSet hSet=new LinkedHashSet(al);

//==================Store values (No duplicate)==============

Iterator iterator = hSet.iterator();

while(iterator.hasNext())

{

IPrivateRemoveappView.IInfo_copyElement ele=wdContext.nodeInfo_copy().createInfo_copyElement();

ele.setName(iterator.next().toString());

wdContext.nodeInfo_copy().addElement(ele);

}

Regards

Trilochan

[Former Member]

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[Former Member]

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[former_member182534]

Hi ,

this is the code you whew looking for

HashSet hashSet = new HashSet();

ITestNodeElement element = null ;

for (int i = 0 ; i < wdContext.nodeTestNode().size() ; i++){

element = wdContext.nodeTestNode().getTestNodeElementAt(i);

hashSet.add(element.getTestAtt());

}

wdContext.nodeTestNode().invalidate();

Iterator iterator = hashSet.iterator();

while(iterator.hasNext())

{

element = wdContext.createAndAddTestNodeElement();

element.setTestAtt(iterator.next().toString());

}

Regards

Piyas

[former_member182534]

Hi ,

Sorry for the delay in reply was busy with work

but hear is the code you wanted

public void wdDoModifyView(com.sap.tc.webdynpro.progmodel.api.IWDView view, boolean firstTime)

{

//@@begin wdDoModifyView

HashMap hashMap = new HashMap ();

ITestNodeElement element = null ;

ArrayList<String> test = new ArrayList<String>();

for (int i = 0 ; i < wdContext.nodeTestNode().size() ; i++){

element = wdContext.nodeTestNode().getTestNodeElementAt(i);

if (hashMap.put(element.getTestAtt(), i) == null ){

test.add(element.getTestAtt());

}

}

wdContext.nodeTestNode().invalidate();

for (int i = 0 ; i < hashMap.size() ; i++ ){

element = wdContext.createAndAddTestNodeElement();

element.setTestAtt(test.get(i));

}

//@@end

}

regards ,

Piyas

[former_member182534]

Hi,

Write a function which iterates the node and puts the value in a hash map,then invalidate the node and then iterate the hash map to put the values back into the node

Regards ,

Piyas

[Former Member]

how will that eliminate duplicates?

[former_member182534]

Hi,

Can you explain your problem in more detail so that a proper solution can be given

Regards

Piyas

[Former Member]

I have a context node and one attribute for that node. The attribute at different indexes have some duplicate values. I just want to know the best way to remove the duplicates.