Loop over hashMap (c:forEach for JSF)

Hi,
is there anything like c:forEach for JSF?
i need to loop over a hashmap.
i cant use jstl cause ive to use the jsf taglib inside the loop.
thanks,
seb

The h:dataTable can iterate over maps. Tomahawk's t:dataList is an option if you rather want lists instead of tables.
Accessing a map in EL isn't that hard:"#{myBean.map.key}"resolves tomyBean.getMap().get("key");

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Looping over a TreeMap with for|foreach

I am a student programmer and am impressed how the APIs for the different collections are very similar if not completely identical.
I used treemap.keySet() to loop over TreeMap<String, MyVeryOwnClass> successfully with a while loop. But it seems impossible to do the same with the newish for-each loop. Or have I missed the point somewhere?
Regards,
Hedley

Okay, I've got the for/each loop working its way through my Applicant TreeMap as follows:
 public String findApprovedApplcnt()
 String applicantKey = "";
 for (Map.Entry<String, Applicant> entry : applicantList.entrySet())
 Applicant applicant = entry.getValue();
 boolean approved = applicant.isApproved();
 if (approved);
 applicantKey = applicant.getApplcntKey();
 // The String key is hashed and stored in an instance variable when object created.
 // It is subsequently retrieved and used when the object is added to the tree map.
 break;
 return applicantKey;
 } // findApprovedApplcnt(..)In the Applicant class is the flag 'private boolean approved = false;' (initially), accessed by the method .isApproved(). What the loop is supposed to do is examine each Applicant object applicant in turn, skip over those where approved = false, and grab the key of the first applicant where approved = true, then break out of the loop and return the key.
Trouble is, it is grabbing the key of the first applicant it encounters regardless of whether approved is either true or false! I have gone nuts over this, stepping through in the debugger, inserting println statements to check the value of approved when it is retrieved, attempting to desk check, etc.
So what is the obvious error to which I am completely blind?
Regards,
Sleepless in Melbourne

[Solved] Foreach loop that loops over all files in a folder does not consider first file found

Hello,
I have a foreach loop in SSIS (as part of Visual Studio 10 and with SQL Server 2012).
It loops over all files in a folder (ForEach File Enumerator).
I set the folder: OK
Traverse Sub folders: OK
I have set up a Variable in Variable Mappings called FileName so it shows User::FileName: OK
Index of variable is 0: OK
It almost works ok. Except that the first file it finds is never considered.
I set a breakpoint then and the first file it finds, is shown in black in the watch variable window. All subsequent files found are shown in red font. When I change the names of the files so another file is the first file found then it skips the other one
which now is the first file.
What is going on here? Why does SSIS skip the first file it finds in a foreach file loop?
Any suggestions highly appreciated.
Thank you
Andi
Andreas

"red font - interesting, any example to show us (image)
It would be interesting to share with us whether you use any file masks or expressions.
Arthur
MyBlog
Twitter
It appears a variable value turns red when it changes between breakpoints. It started black for the first value (the first file, obtained BEFORE the execution reached the breakpoint), and then turned red. I was able to reproduce this behavior on a test environment.
However, it did not skip any files.
OP, please set up the test shown in the image below. Create a breakpoint in the sequence container for the "OnPreExecute" event.

How use c:forEach to loop over a String[][]

Hello,
Is there anyone that can tell me how to use the c:forEach tag to loop over a double String[][]? I can find examples for resultsets etc....but whatever I try with my String[][], I never can get the results on the screen.
Thanx,
debeumers

You need to set up a double c:forEach loop.
ie
<%
// initialisation of string[][]
String[][] sValues = new String[5][5];
for (int i=0; i<sValues.length; i++){
for (int j=0; j<sValues.length; j++){
sValues[i][j] = "" + (i + j);
pageContext.setAttribute("arrayValues", sValues);
%>
// And now to test print out the values
<c:forEach var="row" items="${arrayValues}">
<c:forEach var="col" items="${row}">
<c:out value="${col}"/>
</c:forEach>
 
</c:forEach>
Hope this helps
Cheers, evnafets

Advanced for:loop 4 HashMap?

Hi guys,
is there a way to iterate a HashMap using advanced for:loop schema, somth. like
for(MyKeyObject key: HashMap hm){
System.out.println(hm.get(key));
Thanks in advance!

The iterator for a HashMap's entrySet iterates over Map.Entry objects. So it could be something like this:
for (Map.Entry item : hm.entrySet()) {
// use item.getKey() and/or item.getValue() here
}

How can i loop over treeview selected nodes and then to delete each node if it's a directory or a file ?

I have this code:
if (s == "file")
file = false;
for (int i = 0; i < treeViewMS1.SelectedNodes.Count; i++)
DeleteFile(treeViewMS1.SelectedNode.FullPath, file);
I know it's a file and it is working if it's a single file.
On the treeView i click on a file right click in the menu i select delete and it's doing the line:
DeleteFile(treeViewMS1.SelectedNode.FullPath, file);
And it's working no problems.
But i want to do that if i selected some files togeather multiple selection then to delete each file.
So i added the FOR loop but then how do i delete from the SelectedNodes each node ?
The treeView SelectedNodes dosen't have FullPath like SelectedNode also doing SelectedNodes[i] dosen't have the FullPath property.
Same as for if i want to delete a single directory or multiple selected directories:
This is the continue of the code if it"s not a "file" (else) it's null i know it's a directory and doing:
else
file = true;
RemoveDirectoriesRecursive(treeViewMS1.SelectedNode, treeViewMS1.SelectedNode.FullPath);
Also here i'm using SelectedNode but if i marked multiple directories then i how do i loop over the SelectedNodes and send each SelectedNode to the RemoveDirectoriesRecrusive method ?
My problem is how to loop over SelectedNode(multiple selection of files/directories) and send each selected file/directory to it's method like i'm doing now ?

foreach (TreeNode n in treeViewMS1.SelectedNodes)
// Remove everything associated with TreeNode n here
I don't think it's any harder than that, is it?
If you can multi-select both an item and one of its descendents in the tree, then you'll have the situation that you may have deleted the parent folder and all of its children by the time you get around to deleting the descendent. But that's not such
a big deal. A file can get deleted externally to your program too - so you'll just have to deal with it having been deleted already (or externally) when you get around to deleting it yourself.

Problem with Message-Mapping: Loop over Elements possible?

Hi all,
I want do create a Message-Mapping for an IDoc-to-File Scenario. In the Source Structure there are some Elements which can appear more than once (1..unbounded). I need a mechanism which loops over these elements and search for specified values. From the Element which contains an element with this specified value the mapping should write a value in the target structure.
Here a simple example (source structure) for better understanding:
<root>
 <invoice>
 <number> 10 </number>
 <sum> 200.00 </sum>
 </invoice>
 <invoice>
 <number> 20 </number>
 <sum> 150.00 </sum>
 </invoice>
 <invoice>
 <number> 30 </number>
 <sum> 120.00 </sum>
 </invoice>
</root>
Now the duty of the Mapping should be to search in the elements <invoice> for the number 30. And then the sum of the invoice with the number 30 should be written in a field of the target structure.
I tried it out with a constant togehter with an equalsS-function and an ifWithoutElse-function, but it is working only then, if the invoice with the number 30 has the first position in the root context.
Can anybody help me? Thanks
With kind regards
Christopher

Hi,
Write a UDF to sum the required values and map to target node.
See while writing the UDF select the type as queue.
number -- removecontext-UDF targetnode
sum----removecontext--/
number abd sum or the two inputs
in UDF
int nsum = 0;
for(int i;i < number.length;i++){
if number(i).equals("30") then
 nsum = nsum + valueOf(sum(i));
result.addValue(nsum); // convert the nsum into string
Regsrds
Chilla

Message-Mapping: nested Loops over Elements

Hi Experts,
I have problems with my Message-Mapping in the IR. I have a source and a target structure. In the following I will give you easy examples of these structures:
source structure:
 <E1EDP01>
 <E1EDP19>
 <QUALF> ... </QUALF>
 <IDTNR> ... </IDTNR>
 </E1EDP19>
 <E1EDP19>
 <QUALF> ... </QUALF>
 <IDTNR> ... </IDTNR>
 </E1EDP19>
 </E1EDP01>
 <E1EDP01>
 <E1EDP19>
 <QUALF> ... </QUALF>
 <IDTNR> ... </IDTNR>
 </E1EDP19>
 <E1EDP19>
 <QUALF> ... </QUALF>
 <IDTNR> ... </IDTNR>
 </E1EDP19>
 </E1EDP01>
target structure:
<LineItem>
 <IDTNR></IDTNR>
</LineItem>
<LineItem>
 <IDTNR></IDTNR>
</LineItem>
That means:
For every <E1EDP01> in the source structure I create one <LineItem> in the target structure. One E1EDP01-Element can contain more than one E1EDP19-Elements. I have to loop over these E1EDP19-Elements, because I have to locate the Element <QUALF> with a given (fixed) value. The Mapping should put the value from the Element <IDTNR> from the source structure - where the QUALF-Element has this given value - in the IDTNR-Element of the target structure.
I tried it with a UDF, but only the first <IDTNR> in the target structure got filled.
Thanks for your help
Christopher

Thank you,
but how I can set the Elements IDTNR and QUALF to the context E1EDP01?
In the splitByValue-Function do I need "each value"?
best regards
Christopher

Why optimizer prefers nested loop over hash join?

What do I look for if I want to find out why the server prefers a nested loop over hash join?
The server is 10.2.0.4.0.
The query is:
SELECT p.*
 FROM t1 p, t2 d
 WHERE d.emplid = p.id_psoft
 AND p.flag_processed = 'N'
 AND p.desc_pool = :b1
 AND NOT d.name LIKE '%DUPLICATE%'
 AND ROWNUM < 2tkprof output is:
Production
call count cpu elapsed disk query current rows
Parse 1 0.01 0.00 0 0 4 0
Execute 1 0.00 0.01 0 4 0 0
Fetch 1 228.83 223.48 0 4264533 0 1
total 3 228.84 223.50 0 4264537 4 1
Misses in library cache during parse: 1
Optimizer mode: ALL_ROWS
Parsing user id: 108 (SANJEEV)
Rows Row Source Operation
 1 COUNT STOPKEY (cr=4264533 pr=0 pw=0 time=223484076 us)
 1 NESTED LOOPS (cr=4264533 pr=0 pw=0 time=223484031 us)
10401 TABLE ACCESS FULL T1 (cr=192 pr=0 pw=0 time=228969 us)
 1 TABLE ACCESS FULL T2 (cr=4264341 pr=0 pw=0 time=223182508 us)Development
call count cpu elapsed disk query current rows
Parse 1 0.01 0.00 0 0 0 0
Execute 1 0.00 0.01 0 4 0 0
Fetch 1 0.05 0.03 0 512 0 1
total 3 0.06 0.06 0 516 0 1
Misses in library cache during parse: 1
Optimizer mode: ALL_ROWS
Parsing user id: 113 (SANJEEV)
Rows Row Source Operation
 1 COUNT STOPKEY (cr=512 pr=0 pw=0 time=38876 us)
 1 HASH JOIN (cr=512 pr=0 pw=0 time=38846 us)
 51 TABLE ACCESS FULL T2 (cr=492 pr=0 pw=0 time=30230 us)
 861 TABLE ACCESS FULL T1 (cr=20 pr=0 pw=0 time=2746 us)

sanjeevchauhan wrote:
What do I look for if I want to find out why the server prefers a nested loop over hash join?
The server is 10.2.0.4.0.
The query is:
SELECT p.*
FROM t1 p, t2 d
WHERE d.emplid = p.id_psoft
AND p.flag_processed = 'N'
AND p.desc_pool = :b1
AND NOT d.name LIKE '%DUPLICATE%'
AND ROWNUM < 2
You've got already some suggestions, but the most straightforward way is to run the unhinted statement in both environments and then force the join and access methods you would like to see using hints, in your case probably "USE_HASH(P D)" in your production environment and "FULL(P) FULL(D) USE_NL(P D)" in your development environment should be sufficient to see the costs and estimates returned by the optimizer when using the alternate access and join patterns.
This give you a first indication why the optimizer thinks that the chosen access path seems to be cheaper than the obviously less efficient plan selected in production.
As already mentioned by Hemant using bind variables complicates things a bit since EXPLAIN PLAN is not reliable due to bind variable peeking performed when executing the statement, but not when explaining.
Since you're already on 10g you can get the actual execution plan used for all four variants using DBMS_XPLAN.DISPLAY_CURSOR which tells you more than the TKPROF output in the "Row Source Operation" section regarding the estimates and costs assigned.
Of course the result of your whole exercise might be highly dependent on the actual bind variable value used.
By the way, your statement is questionable in principle since you're querying for the first row of an indeterministic result set. It's not deterministic since you've defined no particular order so depending on the way Oracle executes the statement and the physical storage of your data this query might return different results on different runs.
This is either an indication of a bad design (If the query is supposed to return exactly one row then you don't need the ROWNUM restriction) or an incorrect attempt of a Top 1 query which requires you to specify somehow an order, either by adding a ORDER BY to the statement and wrapping it into an inline view, or e.g. using some analytic functions that allow you specify a RANK by a defined ORDER.
This is an example of how a deterministic Top N query could look like:
SELECT
FROM
SELECT p.*
 FROM t1 p, t2 d
 WHERE d.emplid = p.id_psoft
 AND p.flag_processed = 'N'
 AND p.desc_pool = :b1
 AND NOT d.name LIKE '%DUPLICATE%'
ORDER BY <order_criteria>
WHERE ROWNUM <= 1;Regards,
Randolf
Oracle related stuff blog:
http://oracle-randolf.blogspot.com/
SQLTools++ for Oracle (Open source Oracle GUI for Windows):
http://www.sqltools-plusplus.org:7676/
http://sourceforge.net/projects/sqlt-pp/

Looping over QoQ Where Clause

I have two queries. One is a main query that we pull from a form submission. The second is a small query resultset that lists different subgroups in my company and what main group they belong to. I pull several QoQ from the main query. In the main query results, there is a column that holds the subgroup information. I am trying to do a Q0Q where I group the data from the main query into the main groups for analysis. Here is an example...
Main Query
record 1 - subgroup 1
record 2 - subgroup 2
record 3 - subgroup 3
Second Query
Subgroup 1 - Main Group 1
Subgroup 2 - Main Group 2
Subgroup 3 - Main Group 1
So I am trying to loop over a QoQ on the main query where the result set would contain the information only from Main Group 1. So record 2 would be eliminated. I have tried using an IN clause with a cfloop, but I run into syntax trouble with the comma. I also tried looping over the QoQ as a whole and the resulting dump is only the last record.
If there is anything else you need, let me know.
Any thoughts?
Clay
P.S. Here is a code sampling...
 <cfquery name="rsGroup" datasource="nps">
 SELECT *
 FROM "GROUP"
 WHERE GROUP.PrimaryGroup = '#form.primarygroup#'
 </cfquery>
 rsGroup - <cfdump var="#rsGroup#">
 <cfloop query="rsGroup" startrow="1" endrow="#rsGroup.RecordCount#">
 <cfquery name="rsGroupQoQ" dbtype="query">
 SELECT *
 FROM rsNPS
 WHERE rsNPS.grp = '#rsGroup.group#'
 </cfquery>
 </cfloop>
 rsGroupQoQ - <cfdump var="#rsGroupQoQ#"><cfabort>

ok...I figured it out. I thought I would post my solution in case anyone else runs into this. Also, if anyone out there has a better way, let me know.

<cfset GroupArray = ArrayNew(1)>

<cfset addMainGroup = QueryAddColumn(rsNPS,'mainGroup',GroupArray)>

<cfloop query="rsNPS" startrow="1" endrow="#rsNPS.RecordCount#">
 <cfif rsNPS.GRP EQ "xxxxx"><cfset rsNPS.mainGroup = "yyyyy"></cfif>
 <cfif rsNPS.GRP EQ "xxxxxxxxxx"><cfset rsNPS.mainGroup = "yyyyyyyyyy"></cfif>
 <cfif ...etc. ...
</cfloop>

Efficient looping over strings

ABAPers,
I need to loop over all the characters in a string. Here is the pseudo code:
data: myData TYPE string.
data: n TYPE i.
data: ch TYPE char1.
n = STRLEN( myData).
DO n TIMES.
ch = myData(sy-index).
ENDDO.
While this code would work, the problem is that I am actually iterating over myData two times. STRLEN itself is internally iterating over myData to compute the length.
Is there a more efficient looping mechanism without going through STRLEN?
Thank you in advance for your help.
Pradeep

Hi,
You can try this when it comes to converting things
    WHILE myData IS NOT INITIAL.
do something
    ENDIF.
    myData = myData+1(*).
Eddy
PS.
Put yourself on the SDN world map (http://sdn.idizaai.be/sdn_world/sdn_world.html) and earn 25 points.
Spread the wor(l)d!

CFScript Math expression - Summing up looped over data

If I loop over numeric data and I want to sum that data I am looking for the correct manner to do so. Of course I want to do this in cfscript.
I know that I could go the route of doing a one demensional array and using the array sum function and I could also use stauctures.
I am interested in different solutions to this problem.
My end state is that I need to sum and average looped dynamic data for reporting purposes.
For purposes of example static values will be helpful for better understanding.
Thanks in advance.

Owain,
This is what I came up with and it outputs the looped data. Now I am trying to add it up and average the results.
BTW Adam,
Be delusional on a Microsoft or Oracle forum board.
Now that would be some fun reading cutting through those flames! (In a patronising Kinda Way!).

Looping over Nested Structure

Hey Guys,
I have a component that returns a structure. The structure is
called ContactQuery. ContactQuery has to elements, one called
Results, and one called Success. Results contains the data I want
to loop over. If you try looping over the ContactQuery by using
CFLoop and specify the ContactQuery as the collection, of course it
only loops twice (once for Results, once for Success). How can I
loop over the Results structure withing ContactQuery? You can see
the dump of the structure at:
http://www.digitalswordsmen.com/cfschedule/admin/Create_Tokens_Table.cfm
Attached is the code I have. I am just unsure of the syntax
for looping over the Results section of the structure.
Thank you.

Nope. I am dumb and didn't really think about it. The fact
that it is a query nested in a structure threw me off. The code
that works was
<cfloop query="ContactQuery.Results">
<tr>
<td></td><td>#firstname#</td><td>#lastname#</td><td>#email#</td><td>#randrange(10000,9999 9)#</td>
</tr>
</cfloop>
Thanks for the help, sorry about that dumb question.

Looping over arraycollection with sap data

Hello,
I asked a lot of persons but i still have a problem.
I am trying to make a organizational chart in Adobe Flex with data out of the SAP system.
When I try to access my data that I have given trough the Flash Islands container it doesn’t work.
I do:
[Bindable]
Public var datasource:Arraycollection;
Then I want to loop over this datasource with a for loop but it says that the object is null.
for (i = o; i < datasource.length; i++)
When I use datasource as dataprovider for a datagrid in Flex, that works perfect.
Please answer fast because I need it for school.
greetings

Hello,
I asked a lot of persons but i still have a problem.
I am trying to make a organizational chart in Adobe Flex with data out of the SAP system.
When I try to access my data that I have given trough the Flash Islands container it doesn’t work.
I do:
[Bindable]
Public var datasource:Arraycollection;
Then I want to loop over this datasource with a for loop but it says that the object is null.
for (i = o; i < datasource.length; i++)
When I use datasource as dataprovider for a datagrid in Flex, that works perfect.
Please answer fast because I need it for school.
greetings

Looping over query by month

etings,
I have a query I am pulling that has a date field entitled, "Completed". I am attempting to loop over the query by date to slice and dice the data for a table and chart. Here is what I have done thus far...
Setup two variables where I am only interested in the month. My plan is to fileter the date by month so I can pull the data out by month.
 <cfset startDate = #DatePart('m','01/01/09')#>
 <cfset endDate = #DatePart('m',Now())#>
Here is my loop...
 <cfloop from = "#startDate#" to = "#endDate#" index = "i" step = "1">
Here is one of my QoQs within the loop...
 <cfquery name="NPS0" dbtype="query">
 SELECT *
 FROM rsNPS
 WHERE #DatePart('m',rsNPS.completed)# = #i#
 </cfquery>
I am having difficulties in getting this to work. Has anyone ever done something like this. I feel like the answer is right in front of me, but I have been staring at this code for a while. If anyone has any thoughts, I would be glad to hear them.
~Clay

fs22 wrote:
 <cfquery name="NPS0" dbtype="query">
 SELECT *
 FROM rsNPS
 WHERE #DatePart('m',rsNPS.completed)# = #i#
 </cfquery>
QoQ are a separate beast. You cannot use standard CF functions inside them. AFAIK, QoQ only support a few functions like CAST, UPPER, LOWER, etcetera. So as Dan suggested, you should peform the date functions in your database query.

Loop over hashMap (c:forEach for JSF)

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