Size of the memory or the size of the persistent object

Similar Questions

• Doubt about the persistent object

  Hi friends,

  I've stored data object persistent after that some time, my Simulator has taken a lot of time to load the application so I run clear.bat do fast Simulator. But after I run clear.bat. The values of what I stored in the persistent object had disappeared. Someone at - he said, therefore, it is the persistent object data are parties to cause of the performer, the clear.bat or any other reason. pls clarify my doubt friends...

  Kind regards

  s.Kumaran.

  It is b'caz of clean.bat. Clean.bat will remove all applications and unnecessary files, etc...

• The BlackBerry object Handles and the persistent object Handles?

  Can someone please what are the object Handles and handles of object persistent in Blackberry? and how are they different?

  Object handles are pointers to a Java object.  Each object that you create in your application using one of them.  Similarly, each object stored in the persistent store contains a handful.

  If you have a complex object you want to store in the persistent store, as a vector that contains a number of complex classes, you can store the vector in a group of objects that you want to save the object handles.  Grouped objects use a single Treaty when it is stored in the persistent store.  The disadvantage is to ungroup the object for editing.

  You will need to balance saving handles object against the drop in performance of separate objects.  Object groups are ideal for the complex elements that are frequently changed.

• change the value of an object in the content of the persistent object

  Hello

  I'm triyin to make a customizable menu, saving the preferences of the user as a custom class in a hash table which is the content of my persistent object.

  the custom class "Favoritos" is like this:

  public class Favoritos implements Persistable {
        private Boolean[] misFavoritos = new Boolean[10];
  
        public Favoritos() {
          super();
      }
  
      public Boolean[] getMisFavoritos() {
          return misFavoritos;
      }
  
      public void setMisFavoritos(Boolean[] misFavoritos) {
          this.misFavoritos = misFavoritos;
      }
  }
  

  and the hash table custom:

  public class CustomHashtable extends Hashtable implements Persistable {
  
  }
  

  in my menu configuration screen, I show the options selected as Favorites, which are defined as true in Boolean Favoritos object table in the hashtable. I retrieve the values or set them all as false if they have not been registered before, like this:

  PersistentObject persistentObject = PersistentStore.getPersistentObject(KEY);
  if(persistentObject.getContents() != null){
      CustomHashtable persistentHashtable = (CustomHashtable) persistentObject.getContents();
      if(persistentHashtable.containsKey("misFavoritos")){
      misFavoritos = ((Favoritos) persistentHashtable.get("misFavoritos"));
      }
      else{
      misFavoritos = new Favoritos();
      Boolean[] f = {new Boolean(false), new Boolean(false), new Boolean(false), new Boolean(false), new Boolean(false),
                new Boolean(false), new Boolean(false), new Boolean(false), new Boolean(false), new Boolean(false)};
      misFavoritos.setMisFavoritos(f);
      persistentHashtable.put("misFavoritos", misFavoritos);
      persistentObject.commit();
      }
  }
  

  So I give to the user the possibility to define as true certain values and Boolean table, I try to change them this way:

  misFavoritos.getMisFavoritos()[i] = new Boolean(true);
  persistentHashtable.put("misFavoritos", misFavoritos);
  persistentObject.commit();
  

  Changes are persisted as I navigate the application, I want to say, if I close the configuration screen and open another configuration screen, changes of this show, but I I close application it loosse changes made a show all the elements of the array as false. What I do wrong?

  RuntimeStore is the other location people will such things, but it is cleared to restart the device, not the app.

  If you want to have something that you have to restart the application, then keep your storage apps and turn it off when leaving.

• Question about the persistent object

  Hello

  When I used to store data using persistent object, data also will be deleted after uninstalling the app.

  Is there any data keep possibility even if the app is uninstalled?

  Can anyone give me a suggestion on this?

  Thank you.

  Objects are deleted when no request refers to them.

  So, if you have implemented a custom persistable object, whis would explain the removal.

  Use "Vanilla" persistable objects in the store, such as Hashtable.

• problem when getting the value of the persistent object

  Hello

  I am trying to store the State of registration of the user in my App I have used persistent store. But I don't get the bak of the store database. I wrote the code below:

  package com.saiservices.util;
  
  import java.util.Enumeration;
  
  import com.saiservices.ui.Logger;
  
  import net.rim.device.api.system.PersistentObject;
  import net.rim.device.api.system.PersistentStore;
  import net.rim.device.api.util.Persistable;
  
  public class SaiPersistentStore implements Persistable{
  
      private SaiHashTable mElements = null;
      static SaiPersistentStore instance;
      private static final long KEY = xxxxxxxxxxxx;
      private PersistentObject persistentObject = null;
  
      /**
       * Gets the single instance of DataBase.
       *
       * @return single instance of DataBase
       */
      public static SaiPersistentStore getInstance() {
          try {
              if (instance == null) {
                  instance = new SaiPersistentStore();
              }
          } catch (Exception e) {
              instance = null;
          }
          return instance;
      }
  
      private SaiPersistentStore()
      {
           Logger.out("PersistentStoreInfo", "inside constructor  ");
          persistentObject = PersistentStore.getPersistentObject(KEY);
           synchronized (persistentObject)
             {
                 if (persistentObject.getContents() == null)
                 {
                     persistentObject.setContents(new SaiHashTable());
                     persistentObject.commit();
                 }
             }
  
           mElements = (SaiHashTable)persistentObject.getContents();
           if (mElements == null){
               Logger.out("PersistentStoreInfo", "************"+(mElements == null));
               mElements = new SaiHashTable();
           }
      }
  
      public String getElement(String key)
      {
          Logger.out("PersistentStoreInfo", "getElement :"+key);
          Logger.out("PersistentStoreInfo", "getElement value   :"+mElements.get(key));
  
          return (String) mElements.get(key);
      }
  
      public void setElement(String key, String value)
      {
          Logger.out("PersistentStoreInfo", "setElement11111 :"+key + "   "+value);
          mElements.put(key, value);
          persistentObject.setContents(mElements);
          Logger.out("PersistentStoreInfo", "setElement22222 :"+key+"   "+value);
          persistentObject.commit();
      }
  
      public Enumeration getAllKeys()
      {
          return mElements.keys();
      }
  
  }
  

  And here's the code for hash table:

  package com.saiservices.util;
  
  import java.util.Hashtable;
  
  import net.rim.device.api.util.Persistable;
  
  public class SaiHashTable extends Hashtable implements Persistable{
  
      public SaiHashTable(){
          super();
      }
      public SaiHashTable(int initialCepacity){
          super(initialCepacity);
      }
  
  }
  

  Now, I'll put the element as follows:

  SaiPersistentStore.getInstance (.setElement("Registration","on"));

  But when I try to get the item in a way theis, gettting null value:

  SaiPersistentStore.getInstance () .getElement ("Register")

  Where I am doing wrong here?

  The fixed. Key hash table was different. Change it and it works...

• Editing an object that I stored in the persistent store

  I store a custom object in the store persistent and would like to add a new Member.  Someone knows how can I do this?  I'd rather not delete it and store an object in its place because what happens if I need to add more members in the future.  This would encourage me to juggle all versions of my object.  Is there a kind of model for version control that I can apply to my objects stored persistently?

  I don't think it will work.  The link that you say talk us too much serialization, but the persistent object is not serialized as part of persistence.  If you want to serialize her, you should do it yourself.

  I'm guessing that you did not design your class being "expandable". And I'm guessing that you do not want your users to have to recreate these data.

  So I investigate an approach to migration.  In the code that gets the persistent store, got it get the object persistent, then check that it is indeed a picture of your old items.  If it is, convert it to an object type, store it in a collection (vector or Hashtable as suggested, for example) and keep the result, by replacing your old array of persistent storage object.  So your new application includes the old class of objects, exactly as it was, which means that you can install it on top of your existing application.  But once your request is used at the same time, the old persistent object is no longer used.

  Does make sense?

• increase the size of an array stored in the persistent store

  Hello

  I have a question.  I use the persistent store to store the data.

  When there is a new medium, I need to add it in this table.

  The problem is the size of the table is fixed, how do I re - set the size of the array? and save the persistent store return?

  Thank you

  Yes, vector will be better because you can't copy items.

  If you use the simple table of data types would be more effective, I think, you can take a look at Arrays.fill, then.

  No referenced objects are captured by garbage collection.

• Error determining responsible for image size: the loading object is not sufficiently loaded to provide this information.

  Hello

  I am trying to load and image and determine its dimension immediately after loading.  I use a Loader object and check the width when the object of the loader's contentLoaderInfo Event.COMPLETE event is triggered...

  myLoader.contentLoaderInfo.addEventListener (Event.COMPLETE, onLoadComplete);

  Then:

  public void onLoadComplete(event:Event)

  {

  trace (myLoader.Width); 0

  trace (myLoader.contentLoaderInfo.Width); Error: The loading object is not sufficiently loaded to provide this information.

  }

  I tried something similar with the event of Event.INIT but same result.  Any ideas on the best way to solve this problem?

  Thank you!

  Moshe

  I think it's the answer to your question:

  trace(event.currentTarget.width);
  

• Binds the data object graph, causing memory

  Hello

  I want to create a WPF application that uses Measurement Studio to display the data points on the graph.

  We have already implemented a HAL, the data in the reports of the UI (after a few manipulations), using the DAQmx.

  I saw in your examples you display only the last second points, but my users can choose to see the data in an hour, and if I continue in the data memory of the points for the last hour I get out of memory (the data object become very big).

  How can I display in the chart of the data of the last X minutes / hours without keeping all the data in memory?

  Sorry, it was my fault (the years were defective in my local test as well, just, I had not noticed). Fortunately, what makes the solution even simpler: the CustomXAxis implementation can change just object ISourceDataProvider.TryGetSourceDataStart() { return default(DateTime); } .

  Also, for future reference: to the changes of the properties in WPF, you must be a dependency property or INotifyPropertyChanged , but not both (i.e. didn't need you OnStartTimePropertyChanged in CustomXAxis ).

• In memory of filter do not have applied to the View object

  Dear everybody
  
  I created a display criteria with the query execution mode = both and I insert a few records at run time in the same view for multiple custid object and I want to filter this display in particular custid object after inserting records
  Here is my code: -.

   
               setApplyViewCriteriaName("filterByCustomerNumber_VOCriteria");
              setNamedWhereClauseParam("Bind_CustNumber", custNumber);
              executeQuery();
              
           

  but the problem is that the view object is not be filtered
  
  Please help;
  
  Respect of
  Praveen

  I used once before RowMatch() and worked for me.
  Here is an example of the developer's guide. It is well worth a try by you.
  Good luck

  Example 42-14 Performing In-Memory Filtering with RowMatch
  
  // In TestClientRowMatch.java
  // 1. Query the full customer list
  ViewObject vo = am.findViewObject("CustomerList");
  vo.executeQuery();
  showRows(vo,"Initial database results");
  // 2. Mark odd-numbered rows selected by setting Selected = Boolean.TRUE
  markOddRowsAsSelected(vo);
  showRows(vo,"After marking odd rows selected");
  // 3. Use a RowMatch to subset row set to only those with Selected = true
  RowMatch rm = new RowMatch("Selected = true");
  vo.setRowMatch(rm);
  // Note: Only need to set SQL mode when not defined at design time
  vo.setQueryMode(ViewObject.QUERY_MODE_SCAN_VIEW_ROWS);
  vo.executeQuery();
  showRows(vo, "After in-memory filtering on only selected rows");
  // 5. Further subset rowset using more complicated RowMatch expression
  rm = new RowMatch("LastName = 'Popp' "+
                    "or (FirstName like 'A%' and LastName like 'K%')");
  vo.setRowMatch(rm);
  vo.executeQuery();
  showRows(vo,"After in-memory filtering with more complex expression");
  // 5. Remove RowMatch, set query mode back to database, requery to see full list
  vo.setRowMatch(null);
  vo.setQueryMode(ViewObject.QUERY_MODE_SCAN_DATABASE_TABLES);
  vo.executeQuery();
  showRows(vo,"After re-querying to see a full list again");
  

• Access the main object of a SWF file in memory

  Hey.
  
  I'm trying to access the main object of a SWF file in memory. Consider the following code:
  
  package test {}
  import flash.display.Sprite;
  import flash.utils.ByteArray;
  
  SerializableAttribute public class Main extends Sprite {}
  public void Main (): void {}
  var b:ByteArray = new ByteArray();
  b.writeObject (this); This main object is what I'm trying to access
  }
  }
  }
  
  However, when I do a trace (b.length), the value I get does not match the length of the actual SWF file, then perhaps that there is another way.
  
  I am trying to achieve the same type of content that you would get if you load an external SWF using loadBytes, unless I want to access the principal object of SWF (running in memory) in this way.
  
  I have this even possible?
  
  Thank you.

  Hey.

  Well, I never knew a solution to it (if it is still possible to what I asked). However, I believe that I've implemented a workaround solution that should be enough for my needs. Perhaps it may help someone else too:

  Although I can not (seem to) get the SWF running access itself to memory, I can load another copy of itself. When I tested the copy loaded (in memory) and compared with the content of the file on the disk, using a hex editor, content match!

  This allows me to do things like control totals and which do not. An implementation is to use this technique to guard against the 'cache-hacking' of sovereign wealth funds.

• Are there alternatives for the large objects through callback JMS?

  Hi, I am developing an application that uses JMS reminder to create this 'multi-threaded feel '. All's well if the data object returns of each MDB is relatively small, but as soon as we ended with the need to send back large objects (for example, an ArrayList of 250 objects k) of the MDB (with 20 MDB active at a given time), it breaks the app when the server ran out of memory when the MDB strikes the setObject method call on the response (server log see extract below). Is there any "known" for JMS problem managing large objects? Are there any other alternatives to recall JMS to create this 'multi-threaded' feature in WLS? Thanks in advance.
  
  
  # < 19 October 2010 01:33:16 SGT > < WARNING > < EJB > < RTAN12 > < AdminServer > < ExecuteThread [ASSET]: '13' for queue: '(self-adjusting) weblogic.kernel.Default' > < < anonymous > > <><>< 1287423196150 > < BEA-010065 > < MessageDrivenBean threw an Exception in onMessage(). The exception was:
  means: allocLargeObjectOrArray - size of the object: 9273360, elements of Num: 9273344.
  means: allocLargeObjectOrArray - size of the object: 9273360, elements of Num: 9273344
  at java.util.Arrays.copyOf(Arrays.java:2786)
  at java.io.ByteArrayOutputStream.write(ByteArrayOutputStream.java:94)
  in java.io.ObjectOutputStream$ BlockDataOutputStream.drain (ObjectOutputStream.java:1839)
  in java.io.ObjectOutputStream$ BlockDataOutputStream.setBlockDataMode (ObjectOutputStream.java:1748)
  at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1161)
  at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:326)
  at weblogic.jms.common.ObjectMessageImpl.setObject(ObjectMessageImpl.java:157)
  at weblogic.jms.common.ObjectMessageImpl.setObject(ObjectMessageImpl.java:133)
  at com.hp.it.ipg.vfmaps.services.vfdataquery.ejb.VfDataMiner.onMessage(VfDataMiner.java:163)
  at sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
  at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
  at java.lang.reflect.Method.invoke(Method.java:597)
  at com.bea.core.repackaged.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:310)
  at com.bea.core.repackaged.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182)
  at com.bea.core.repackaged.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)
  at com.bea.core.repackaged.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:131)
  at com.bea.core.repackaged.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:119)
  at com.bea.core.repackaged.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
  at com.bea.core.repackaged.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:89)
  at com.bea.core.repackaged.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
  at com.bea.core.repackaged.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:131)
  at com.bea.core.repackaged.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:119)
  at com.bea.core.repackaged.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
  at com.bea.core.repackaged.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
  to $Proxy123.onMessage (Unknown Source)
  at weblogic.ejb.container.internal.MDListener.execute(MDListener.java:466)
  at weblogic.ejb.container.internal.MDListener.transactionalOnMessage(MDListener.java:371)
  at weblogic.ejb.container.internal.MDListener.onMessage(MDListener.java:328)
  at weblogic.jms.client.JMSSession.onMessage(JMSSession.java:4585)
  at weblogic.jms.client.JMSSession.execute(JMSSession.java:4271)
  at weblogic.jms.client.JMSSession.executeMessage(JMSSession.java:3748)
  to weblogic.jms.client.JMSSession.access$ 000 (JMSSession.java:114)
  to weblogic.jms.client.JMSSession$ UseForRunnable.run (JMSSession.java:5096)
  to weblogic.work.SelfTuningWorkManagerImpl$ WorkAdapterImpl.run (SelfTuningWorkManagerImpl.java:516)
  at weblogic.work.ExecuteThread.execute(ExecuteThread.java:201)
  at weblogic.work.ExecuteThread.run(ExecuteThread.java:173)
  
  Published by: user651019 on October 18, 2010 11:40

  It is your writing, you have put in place a use case when the application attempts to use on several large objects in parallel. The FMV is just short of the bunch. Looks like the same thing would be whether it's large objects JMS messages, or another type of object...

  Some ideas: (A) release the memory JVM - possibly by setting pagination (see chapter JMS of the Performance and Tuning Guide), (B) reduce the size of the async message line (search for "MessagesMaximum") in the same guide, (C) increase the memory to the JVM, (D) see if its possible to decompose each large into several small objects/messages object, but perhaps especially (E) do not expect to be able to have multiple threads each operate on a very large object separate simultaneously - each object necessarily consume memory while it is accessed - seriously consider reducing the number of concurrent threads according to chapter MDB of the Performance and Tuning guide.

  Tom

• How to get the line object table View

  Hello

  I use Jdev 11.1.1.7

  My requirement is, there are two ways I can get lines in my logic, you're based getFilteredRows (RowQualifier) and vo.executeQuery () - on a specific condition or I should consider first or later...

  getFilteredRows() returns the line [], I need to find a way to make [Row] of the View object properly after ececuteQuery() on the VO... When I use vo.getAllRowsInRange () which returns only a single line, but what iterate the VO even, I see that there is more than one line... How can he get all the range of the VO table?

  Thank you

  You can set the size of the field-1?

  ViewObjectImpl (Oracle ADF model and Business 10.1.2 API components reference)before calling getAllrowsinRange?

• Why none of the moving objects are detected?

  I use Adobe Premiere elements 4.1 to edit (drone) Phantom images smooth 1920 x 1080.  There is no foreground subject, but there are several background characteristics that are quite evident profiles.  When I try to apply the motion tracking, it keeps telling me: ' none of the detected objects in motion, please only use Select-object to mark the object to follow. "  This message is presented to me after I click Select object, adjust the limits and then click on object of the track.  I tried several different features of many different sizes and I still get this message.  The video is similar to this, from about 2 minutes: Upper North Fork River Kings (raw) - YouTube.

  What I am doing wrong and how do I get first to follow a feature in the background?

  I downloaded your image and created a video motion with her moving on the screen. I couldn't follow the boldest exclusively, but when I chose a larger area surrounding the most "BOLD" I have not had any problems at all. See the Image

  Apparently, you need to register more contrast in your selection to follow successfully. Center the boldest in the largest area of caterpillars as best you can.

  

  Best regards, Terry