Question about performance (entities & data object)

Hello:
I know that this can be, maybe, a silly question, but I've got the doubt
I get a local reference to a entity ( myEntityLocal ) and I'm going to get many values from it.
For example
myEntityLocal.getId();
myEntityLocal getName();
myEntityLocal.getAddr();
etc etc
My question is
Would be better, in performance terms, to fill all fields into a data object myEntityData ) and retrieve them from it ?
I mean
myEntityData = myEntityLocal.getData() // where getData() calls getter methods on myEntityLocal
myEntityData.getId();
myEntityData.getName();
myEntityData.getAddr();
I think the result is the same because is a local reference, but I've got that doubt
Thanks and regards

This will be san=me if you are considering the Local interfaces.
For remote interface(like accessing EJB from Servlets resides in diffferent Apps Server) use the DTO(data Transfer Object) patterns.
Regards
Sushil

Similar Messages

A simple question about performance!

Hi! I have a simple question about performance. Suppouse that you have a servlet or a class with DB access, and you need to use a value several times in that page. What is best, to assign the value from say, a resultset or a request.getParameter() to a variable or to call the resultset or the request every time you need to retrieve that value? Which option uses less memory, which is faster, etc.?
Hoping the best fou u
Raul

If you need more values from a db, the best is to open some connections (connection pool) and use the for accessing the db.
To get the data only once, open the connection, get the data, store the data whereever you want: variable (class), hidden control (if you want to send from one page to another by request) and close the connection as quicky as possible.
The advantage of the first method is that the most time consuming activity (connections opening) is done only once.

Question about Rescheduling Start Date of a Task

Question about Rescheduling Start Date of a Task
I'm trying to determine whether the 'Reschedule' action is appropriate to my situation...
I have a service that consists of 4 tasks. The first 3 tasks will be completed immediately and then the request's 4th task will sit in a queue for about a month so that all of these requests can be grouped together and fulfilled during a few overnight work sessions.
While the 4th task is waiting to be fulfilled, the technician will be contacting the requestor to schedule the work to be done sometime during a 3 day window. The technician needs to specify which of the 3 days each request will be worked on. I'm not sure if I should store the date in a service form field or have the technician reschedule the task so that the start date of the task is set to one of the 3 days. If I use the reschedule feature, are there any downsides?
The advantage of using the reschedule feature is that the scheduled start date can be displayed in ServiceManager's task list and can therefore be sorted on and queried. This wouldn't be possible if I stored the date in a dictionary field on the service form. In that case, I'd have to use custom reports to group the tasks by start date.
Please let me know your thoughts...
Thanks,
Scott

This strikes me as a very good use of this feature, since your need to to have the date for this task rescheduled/reflected in ServiceManager. This is the specific effect of using this feature.
For the benefit of others reading this post, remember: this rescheduled date will not change the due date for the service.

I wont to fix my old id account my email is and when you whant to reset the password i dont recieve any email from apple id and when you answer question about your birth date it says not file is found.

When i try and reset my id account it says it has been blocked for security reason. When you answer question about your birth date no souch record found and when i resset it by email io dont recieve any email from apple id reseat password. can anyone hep me ?
<Email Edited by Host>

Security questions:
https://discussions.apple.com/docs/DOC-4551
http://support.apple.com/kb/HT5312

A question about UDA and Data-Forms

Hi all,
I have a couple of questions about UDA. I am using Hyperion Planning 11.1.1.3m, and when I desing a Data-Form I would need to use the UDA I asigned for the Entity dimension: is that posiible?
The other question is, when creating a Substiution Variable in Essbase I use the function @UDA (+dimension+, "MemberA"), but when using this variable in the Data-Form, it does nothing at all(in fact, it is been detected as an error). Why is that happening?
Thanks a lot

Use an attribute dimension to achieve what you are trying to do with UDA's in a data form. An attribute dimension will allow you to filter on members in the base dimension by a specific attribute the same way a UDA will. You can create the attribute dimension in the dimension editor in Planning by selecting the base dimension (Entity) and then select the custom attributes' button. Check the dba guide for a step-by-step approach.
With regards to the subvar, are you trying to add the function as a value of the subvar when you create it in EAS? If so, this is not allowed. What are you trying to do with the subvar on the form? Subvars are supported in data forms as part of the member selection for a dimension. For instance, you can set up a subvar called CurYear and set the value equal to FY11 for the Fiscal Year dimension. In the data form you can set the member selection for the Fiscal Year dimension to CurYear. When the user opens the form, the member FY11 is returned.

Question about exporting FBL3N data in Pivot table format

Dear all
I have a question about the "exporting file" function of ECC 6.0.
We started to use ECC 6.0 system, and it appears that we are no longer able to export "FBL3N data" to a local PC in pivot table format.
Is there a way to do it?
We used to be able to do so when the system is 4.6.
I appreciate your support!
Kind regards

Dear:
You can do that. Execute report FBL3N with desired GL account in it. After when report has been executed right click on it. There will be an option Spread Sheet. Select all available format. In drill down select 08 (Excel in existing XXL format) and press OK. There you will get pivot table option for downloading., Hope this will help you resolve your query.
Regards

What about SDO - service data objects?

Does Oracle have an implementation of Service Data Objects?
http://www.osoa.org/display/Main/Service+Data+Objects+Home
I cant find any reference about this only about SCA.

this post is from 2007 maybe soa suite 11g weblogic based can be SDO right?

Deployment question for EMS and Data Objects

I have configured tens of EMS and data objects. It's deployment time to a new environment, say Dev to Test. Do i have to manually create all this data objects and EMS in each environment, or is it possible to write a script or deployment script to do it automatically for each environment. If not, it will be a headache configuring all these DO and EMS again for eah environment. Please suggest.
Thanks

See this guide: http://download.oracle.com/docs/cd/E15523_01/core.1111/e10105/testprod.htm#CHDDIEBI
Specifically on the usage of icommand in section 20.4.2

Question about reading hex data

Hello! I am a Labview Novice and having a problem about reading hex data.
Basically I am having bytes from the serial port like this: "80100E0E0AB4F646F24A00911267087E032080057FFF "
It is not encoded in ASCII. What I want to do is to convert the hex to an ASCII hex string.
so that the string would become hex numbers in ASCII.
I think the following might be a solution, but I have no idea what the subvi is in the solution.
http://forums.ni.com/t5/LabVIEW/Hex-String-to-Ascii-Hex-String/m-p/886078/highlight/true#M400462
Thanks in advance and I appreciate your kind help!
Solved!
Go to Solution.

coolmatthew wrote:
What I want to do is actually this.
You are using way too much code for all this. All you need is a concatenate strings, replacing your entire loop and such. Same result.
(see also)
LabVIEW Champion . Do more with less code and in less time .
Attachments:
HEXTwiddler.png ‏4 KB

LOB question about performance, fragmentation etc.

Well..
I want to discuss the issues around LOB objects.
If I have an enttity class with n-count fields and then a lob as the n+1th field, does this affect performance in any way ? E.g. if performance is random access for an object without a lob, does the performance get linear or something when the lob is introduced?
Another one:
If the latter is true: is it an option for me to use an @OneToOne mapping to compensate ?
What about fragmentation ? How can a database or whoever compensate for fragmentation, in the case the lob is the n+1th field ? Or just in general: How the fragmentation issues are handled?
(Im just thinking that lobs introduce fragmentation and brings performance down...)

This will be san=me if you are considering the Local interfaces.
For remote interface(like accessing EJB from Servlets resides in diffferent Apps Server) use the DTO(data Transfer Object) patterns.
Regards
Sushil

Follow up question about interpreting smart data test on 160GB classic

I posted this question regarding the problem I am having with my 160GB ipod classic:
http://discussions.apple.com/thread.jspa?threadID=2153948&tstart=0
It appears noone is able to help me, so I have found some more information:
In short, itunes will not write to my 160GB ipod once it reaches about 35GB / 160. Windows will write to it, but only at 500KB/sec rather than the usual 19+Mb/sec. It just crawls once it hits that point. After following some advice online I came up with the following results using the HD tests in diagnostic mode.
smart data test:
retracts: 138
rallocs: 563
pending sector: 55
poweron hours: 1016
starts/stops: 267
temp: current 26C
temp: min 19C
temp: max 53C
and for the HDD spec test:
sno: (not sure if i should post a serial number?)
FW Revision: NB100-05
LBAs: 0x12a19eb0
These are the only tests that show up under the I/O HardDrive section. Should there be more? It seems like there might be from what I read, but I am not sure.
Anyway, any help interpreting these results would be greatly appreciated.

adame wrote:
rallocs: 563
pending sector: 55
etc.
Your drive is probably toast. Compare your SmartData stats with mine:
Retracts: 844
*Reallocs: 12*
*Pending Sectors: 0*
PowerOn Hours: 2037
Starts/Stops: 830
Temp: Current 29c
Temp: Min 10c
Temp: Max 50C
I've only 12 remapped sectors and none pending. From the Wikipedia S.M.A.R.T. article:
*Reallocated Sectors Count*
Count of reallocated sectors. When the hard drive finds a read/write/verification error, it marks this sector as "reallocated" and transfers data to a special reserved area (spare area). This process is also known as remapping, and "reallocated" sectors are called remaps. This is why, on modern hard disks, "bad blocks" cannot be found while testing the surface – all bad blocks are hidden in reallocated sectors. However, as the number of reallocated sectors increases, the read/write speed tends to decrease. The raw value normally represents a count of the number of bad sectors that have been found and remapped. Thus, the higher the attribute value, the more sectors the drive has had to reallocate.
*Pending sector count*
Number of "unstable" sectors (waiting to be remapped, because of read errors). If an unstable sector is subsequently written or read successfully, this value is decreased and the sector is not remapped. Read errors on a sector will not remap the sector (since it might be readable later); instead, the drive firmware remembers that the sector needs to be remapped, and remaps it the next time it's written.
I'm sure you'll find the counts go up if you try to do a surface scanning disk check. Sorry it's not better news but at least you know where the problem lies. Assuming your iPod is out of warranty it's probably time to get your iPod refurbished with a new drive or to buy a new iPod.
tt2

Newbie question about entity and view objects

Hi everyone,
My first ADF application in JDeveloper is off to a difficult start. Having come from a forms background, I know that it is necessary avoid using post-query type lookups in order to have full filtering using F11/Ctrl+F11. This means creating an CRUDable view and getting as much of the lookup data as possible into the view without losing the ability to modify the data. In JDeveloper, I do not know how to build my data model to support that. My thought was to start with a robust updateable view as my main CRUD EO and then create a VO on top of that with additional EOs or VOs. But, I have found that I cannot add VOs to another VO. However, if I link the VOs then I have a master-detail which will not work for me.
For example, I have two joins to CSI_INST_EXTEND_ATTRIB_V shown in the queries below and need to have that show in the table displaying the CRUD VO’s data. It seemed that the best way to do this is to create a CSI_INST_EXTEND_ATTRIB_V entity object and view object. The view object would have two parameters, P_INSTANCE_ID and P_ATTRIBUTE name. Both the building and the unit are needed on the same record, and this is not a master-detail even though it might look that way. (A master-detail data control will not work for me because I need all this data to appear on the same line in the table.) So, I need help figuring out the best way to link these to the main (CRUD) view; I want as much of this data as possible to be filterable.
select
cieav.attribute_value
from
csi_inst_extend_attrib_v cieav
where cieav.instance_id = p_instance_id
and cieav.attribute_code = 'BUILDING NAME'
select
cieav.attribute_value
from
csi_inst_extend_attrib_v cieav
where cieav.instance_id = p_instance_id
and cieav.attribute_code = 'UNIT NAME'
Ultimately, I need to display a ton of data in each record displayed in the UI table, so a ton of joins will be needed. And, I need to be able to add records using the UI table also.
James

Hi Alejandro,
Sorry if I caused confusion with my first post. What I had in mind assumed that I could have a single CSI_INST_EXTEND_ATTRIB_V EO with a BuildingVO and UnitVO on top of it. So, I wrote the queries individually to show how I would invoke each view. When I realized that confused the issue, I rewrote the query to explain things better.
Now having seen your 2 queries. You need to create 2 EO. One for each table. Then create an association between the 2 aeO (this will be the join you are talking about). Then, you need to create a VO based on one of the EO and after you can modify and add the second EO (in here you select the join type).
After your done with this, youll have 1 VO that supports CRUD in both tables.
There were three tables in the query: CIEAV_BUILDING, CIEAV_UNIT, and T -- the main CRUD table. When you say that I should create two EOs, do you mean that they are to be for CIEAV_BUILDING and CIEAV_UNIT? Or, CIEAV and T? Assuming CIEAV and T, that sounds like it would allow me to show my building or unit on the record but not both.
By the way, everything is a reference except for the main CRUD table.
Look forward to hearing from you. Thanks for your help (and patience).

Question about Index in data selection

Hi experts,
I am reading the documents about index today and find there are some questions confused me. Plz help, thx!
1 What is the technical structure of index?
For example, I have a table ztable with 5 fields, F1(key), F2(key). F3. F4.F5. If I create a index on F3,F4, the system will create a copy of this table. Is the structure of this copy as follow?
F3, F4, pointer(for the lineno of the recorder)
So this copy will have fewer lines than the ZTABLE and is sorted. If the DB optimizer choose this index in selection, it will be fast for the 2 reasons?
2 By what is the sequence of the fields in the index determined? I read a BLOG about permance, the author make a example with DB05, and say if the distinct values of certain field is between 1-1000 lines, it is good to set a secondary index for the field.
I wonder, if the F3 has only 5 distinct value for all the data in the ZTABLE, and the F4 has 100 distinct value. Which one should be the first field in the index and why?
Thx!!~

Hi,
1 What is the technical structure of index?
For example, I have a table ztable with 5 fields, F1(key), F2(key). F3. F4.F5. If I create a index on F3,F4, the system will create a copy of this table. Is the structure of this copy as follow?
F3, F4, pointer(for the lineno of the recorder)
So this copy will have fewer lines than the ZTABLE and is sorted. If the DB optimizer choose this index in selection, it will be fast for the 2 reasons?
2 By what is the sequence of the fields in the index determined? I read a BLOG about permance, the author make a example with DB05, and say if the distinct values of certain field is between 1-1000 lines, it is good to set a secondary index for the field.
I wonder, if the F3 has only 5 distinct value for all the data in the ZTABLE, and the F4 has 100 distinct value. Which one should be the first field in the index and why?
You seem to be correct for some but not all.
Struture of index will
for unique key index F3, F4, row id of database
it could have only one row id when your where condition match with the index then it goes to only index table first and read the row id and read record directly from the row id.
But for non unique key table store all the F3, F4, row id of record which math value of F1 and F4. It can have multiple value.
When your where condition math with condition partially ie left part of the key or whole part key then read all match record from the index table and then read the database physical table and check for addation where condition if any.
Index is determine on basis of the where condtion which is most left part of index will match.
if your where condition F4 and in your index has f3 f4 then index will not consider, It create gap between index condition and read whole table database. But if you consider f3 then only it consider the index to read because it match the left most part with index fields.
For more details How to create secondary index ? Search for blog in sdn I reply many time.

A question about Performance Settings

         Dear all.
                       Hi all,I want add a performance poller about Environmental Temperature.
                        There is an error as shown in the figur:
                        The device is Nexus 7010. Is it support this poller ?
                          If support,how to setting ?
                         Thank you very much

Peanuts
Thank you for your time and help.
Dumb question Reflash the firm ware
Means Install the new firm ware list on this web site
my old is v3.0.02 build 003 june 4, 2009
The new one is v3.0.02 build 4 12/10/09
The MTU thing Ican figure out. click save OK. But what the heck is
Power cycle the router
Un-plug it ?
Sorry to a pain. Ready to throw this out the window. It works good/great then very poor or not at all. In wireless mode.
The other day on the lap top a friend was connected to a inter-active training video. for about 30 minutes, worked great.
Then today the Dell with windows 7 lost the wireless conection.
Thanks

Question about SWING and ActionEvent Object.

When using a graphical component like a JButton,
one typically adds an ActionListener Object to that button using the
addActionListener method,
in order for a click/appropriate action to execute desired Java code.
One's desired code is within one's own ActionListener Object,
which implements an appropriate interface and the equivalent of
that interface's actionPerformed method.
-How does one program one's own ActionEvent Object,
and register that object (myActionEvent) with the java virtual machine
such that your OWN event object is fired, instead of the
default action?
-Does instantiating one's appropriate ActionEvent object
"fire" it as an event?

Zac1234 wrote:
When using a graphical component like a JButton,
one typically adds an ActionListener Object to that button using the
addActionListener method,
in order for a click/appropriate action to execute desired Java code.Only for components that accept ActionListeners of course. This won't work with a JLabel for instance or any random "graphical component".
-How does one program one's own ActionEvent Object,
and register that object (myActionEvent) with the java virtual machine
such that your OWN event object is fired, instead of the
default action?Please explain exactly what you're trying to do here. Perhaps it's just me, but I'm not sure I understand what you mean by programming your own ActionEvent Object. An ActionEvent object can be simply created like any other object and by using the appropriate constructor (the API can help), but I don't think that you're talking here about ActionEven objects -- the parameter of the actionPerformed method, are you? Please give details as they are important here.
-Does instantiating one's appropriate ActionEvent object
"fire" it as an event?No, but again I'm stumped as to exactly what you're trying to do here.
Finally, let's keep this discussion here, but next time, you will probably want to ask your Swing questions in the Swing forum.
Best of luck.

Question about performance (entities & data object)

Similar Messages

Maybe you are looking for