MSA 4.0 SP8 : "Read-Only" Tile ? (cannot modify data)
Hello
In the Campaign Status tile set (MSACAMcamStatus), I have modified the Campaign tile (camcshort2a) to add a combo engine representing the Campaign Status Profile (BOCAMPAIGN property is 'Stsma')
I made it the same as the Status Profile combo engine in the Campaign Details (camclarge4).
The reason for this change is that it can be changed on the Marketing/Status menu instead of the Marketing/Details menu (which would force the user to go back to Details to set the status, then go to Status to continue)
The problem is that all the controls in the tile stay ReadOnly, I have tried several ways which did not work :
- when adding the control, I set its 'Mode' property to Normal : it is ReadOnly at runtime
- when trying to force a Normal mode in the onLoad tile event, the property doesn't change (ctrlStatusProfile.editmode = cemNormal is not applied, I get no error but the value stays at cemReadOnly)
- in the tile set MSACAMcamStatus I set the tile 'Editable' property to True, but didn't see any change
- I thought about the BO Attribute being locked, it is not (even with adding
anchor.bo.SetAttributeProp "Stsma", blAttributeNormal, while it is already normal).
Can you help please ?
Thanks and Regards,
François
Thanks Latha,
I guess by BC you mean Business Component, and I undertand for this case it is the Tile Set ? In that case that's what I did : set the Editable property to True (the 3rd point in my previous post).
There is something strange though : I had to try very hard to set this property. Each time I changed it before, the app would generate an error and prevent me from using the Tile Design and Property windows, I had to restart MAS. Also, my system is in French, and in MAS several controls are mixed between "True/False" and "Vrai/Faux" (french translation, but the dropdown list only give me the choice between "true/false", all letters lowercase). Unfortunately I cannot have my whole system installed in English, which should be a standard for a developer worksation using "English-speaking" apps.
During runtime, the watched value starts as ReadOnly although for this control it should be Normal.
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ID:
rsreadonlyreportparameter
Source:
microsoft.reportingservices.diagnostics.utilities.errorstrings.resources.strings
Version:
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. In the read-only environment no writes may be performed, as expected, and databases must be opened read-only using DatabaseConfig.setReadOnly(boolean).
. The read-only environment receives a snapshot of the data that is effectively frozen at the time the environment is opened. If the application has the environment open read-write in another JVM process and modifies the environment's databases in any way, the read-only version of the data will not be updated until the read-only JVM process closes and reopens the environment (and by extension all databases in that environment).
. If the read-only environment is opened while the environment is in use by another JVM process in read-write mode, opening the environment read-only (recovery) is likely to take longer than it does after a clean shutdown. This is due to the fact that the read-write JVM process is writing and checkpoints are occurring that are not coordinated with the read-only JVM process. The effect is similar to opening an environment after a crash.
. In a read-only environment, the JE cache will contain information that cannot be evicted because it was reconstructed by recovery and cannot be flushed to disk. This means that the read-only environment may not be suitable for operations that use large amounts of memory, and poor performance may result if this is attempted.
. In a read-write environment, the log cleaner will be prohibited from deleting log files for as long as the environment is open read-only in another JVM process. This may cause disk usage to rise, and for this reason it is not recommended that an environment is kept open read-only in this manner for long periods.
For these reasons, it is recommended that a read-only environment be used only for short periods and for operations that are not performance critical or memory intensive. With few exceptions, all application functions that require access to a JE environment should be built into a single application so that they can be performed in the JVM process where the environment is open read-write.
In most applications, opening an environment read-only can and should be avoided.
-----You've asked an interesting question! I'm afraid that the answer is that it's not possible in BDB JE today.
What you'd really like for your second case is part of the type of functionality provided by MVCC (Multi-Version Concurrency Control). In case you're not familiar with that term, MVCC is the database feature which guarantees that all reads made in a transaction will see a consistent snapshot of the database and that the transaction will successfully commit only if no updates it has made conflict with any concurrent updates made since that snapshot. Unfortunately, while our sister product, BDB (C) has that feature, we do not yet support it.
I think your alternatives are to do achieve your point in time snapshot from the file copy based backup, from the second process, or from an application level mechanism that locks out other updates.
Regards,
Linda -
Hi,
I'm using a text area to display a longer read-only text. It should display only 5 lines and, if the text is longer, it should be scrollable. Works fine as long as I set the attribute Editable to true. But if I set it to No (because it should be read-only), I get the following problems:
- It does not show only the 5 lines anymore, but the complete text without scrollbars.
- It shrinks the size of the text area, so that it fits the text inside. You can see that looking at the borders. But I wanted to have the borders at the original size independent of the text.
Does anyone knows, how to solve that?
Thanks&Regards
Matthiasto the best of my knowledge, if you make it read-only you cannot have the scroll bar enabled. and whatever you explained is the expected behaviour!!
But, i have a workaround under three conditions:
1. if you need the scroll bar
2. if you want the size of it as in the initial state - without disturbing the existing size and format of page
3. you wish to retain the value
keep the value of the text area in a temporary object and pass it to the reference attribute on submit of page. (here we are just retaining the value and not making it read-only)
this helps in keeping the format of page undisturbed!!
HTH
Sharma -
JFileChooser and Read Only Folders in XP
The following question concerns a Java application, not a applet or web service.
If you are browsing a folder with JFileChooser the button to create a new folder is disabled if the parent folder is read-only. Under XP folders often show up as read only and cannot be easily changed by the user. Even if Windows reports that the parent folder is read only, it does not block the creation of sub-folders in it. I'd like to always make the create folder button active regardless of whether the parent folder is read only or not; that more truely reflects the folder creation permissions anyway and mimics the behaviour of an MFC file browser. How would I do this?
I've even tried to add a listener to the file chooser so that as the user browses to a new directory I automatically change the write permissions of folder, but short of a system command, there's no way to change the write permissions from JAVA so I don't consider this a neat solution.
I'm surprised that I haven't found similar complaints on the net. If you use a MFC file browser the create folder button is active, but a Java file chooser has it disabled for the same folder.
Please help.What would you say to a new FileChooser? I love java but I'm no fan of Sun's choosers. (See www.MartinRinehart.com, Examples, ColorChooser.)
Email me if you're interested in doing one. -
Read ONLY Permissions in Windows 2008 R2
Is it possible for users to read only but cannot save a copy to another location? Would like users to see historic photos so they can request copies but they cannot "save as" a copy to any other location on the server or on
their own computer.Hi,
If you grant user "Read" permission on the photos, then the user can copy the photos.
For more detailed information, please see:
Disable copy permission
https://social.technet.microsoft.com/forums/windowsserver/en-US/5d614843-168a-4252-80dd-48d7c71cd010/disable-copy-permission
Best Regards,
Mandy
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