Save custom datasource

Hi!
Im sending videodata over the network and want to save it to disk on the receiving side.
So i used the sample DataSourceReader http://java.sun.com/products/java-media/jmf/2.1.1/solutions/DataSourceReader.java
with my Custom (PushBuffer)DataSource and changed the transferData method:
public void transferData(PushBufferStream stream) {
          count++;
          try {
              stream.read(readBuffer);
              RandomAccessFile raFile = new RandomAccessFile("c:/test.mov", "rw");
              byte data[] = null;
              if (readBuffer.getData() instanceof byte[]){
                   data = (byte[])readBuffer.getData();
              raFile.seek(raFile.length());
              raFile.write(data, 0, data.length);
              raFile.close();
              if(this.count >= 12)this.close();
         catch (IOException e) {
              e.printStackTrace();
     }I also set the contentDescriptor of the processor to "quicktime".
( i checked that it is supported)
But if i want to open the videofile with realplayer, well it dont work.
So, has anybody a clue, what im doing wrong?
thx in advance!
Joerg

The WOG* columns in table COEJ, one of the tables contributing to the COVJ view, use CCCUR-CURKY as the reference table-column for those quantities. The ABAPer you spoke to is correct that CCCUR is a structure. View value fields inherit their reference table-column from the source, in this case COEJ, and since this source table is an SAP delivered table it cannot be modified change this reference.
This means that you're only option for extracting the data out of the COVJ view would be to create a Function Module and use that Function Module as the basis for your DataSource.

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    |    Program                                 SAPLYPFI_FAGL_ITEMS_SELECT_BW                        
    |    Include                                 LYPFI_FAGL_ITEMS_SELECT_BWU01                        
    |    Row                                     353                                                  
    |    Module type                             (FUNCTION)                                           
    |    Module Name                             YPFI_FAGL_GET_LINE_ITEMS                             
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    |Line |SourceCde                                                                               
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    |  339|          old_dbcnt            = 0.                                                        
    |  340|          flag_cursor_open     = 'X'.                                                     
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    |  346|             WHERE (lt_where_tab).                                                         
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    |  349|          old_dbcnt            = 0.                                                        
    |  350|          flag_cursor_open     = 'X'.                                                      
    |  351|          cursor_flag          = 'X'.                                                      
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    |>>>>>|          OPEN CURSOR WITH HOLD i_cursor FOR                                               
    |  354|          SELECT (lt_fldlist_s)                                                            
    |  355|            FROM (ld_dbtab_syntax) CLIENT SPECIFIED.                                       
    |  356|        ENDIF.                                                                             
    357
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    |  359|        st_fieldlist[]  = lt_fieldlist[].                  
    |  360|        sd_dbtab_syntax = ld_dbtab_syntax.             
    |  361|        st_fldlist_s[]  = lt_fldlist_s[].                
    |  362|        st_where_tab[]  = lt_where_tab[].                
    |  363|        st_seltable2[]  = lt_seltable2[].                 
    364
    |  365|      ENDIF.   "cursor_flag                                                               
    366
    |  367|      lt_selection[]  = st_selection[].                 
    |  368|      lt_fieldlist[]  = st_fieldlist[].                                       
    |  369|      ld_dbtab_syntax = sd_dbtab_syntax.        
    |  370|      lt_fldlist_s[]  = st_fldlist_s[].                 
    |  371|      lt_where_tab[]  = st_where_tab[].              
    |  372|      lt_seltable2[]  = st_seltable2[].                   
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    C_T_FAGLPOSE     TYPE     FAGLPOSE_T
    where FAGLPOSE means Fields for Reading Data: Line Items: New General Ledger.GUSL_T_SELECTION is the same type like DDIC table type FB_T_FIELD_SELECT_OPTIONS which will have Fieldname and selection option range.GUSL_T_SELECTION is created within the type group GUSL as mentioned below.
    TYPES: BEGIN OF GUSL_S_SELECTION,
           FIELDNAME LIKE DFIES-FIELDNAME,
           T_RANGE   TYPE GUSL_T_RANGE,
           END   OF GUSL_S_SELECTION,
           GUSL_T_SELECTION TYPE GUSL_S_SELECTION OCCURS 20.
    wherein
    FIELDNAME LIKE DFIES-FIELDNAME,
    DFIES: --> DD Interface: Table Fields for DDIF_FIELDINFO_GET. Also GUSL_T_FIELDS refers to DFIES.
    Regards,
    Praba..

  • Player for custom datasource

    Hi
    I need to create a custom datasource but i want to play it on a player as other normal datasource.
    I tell you what im doing, I have developed a example to show you my problem:
    first thing i do is creating a custom datasource:
    import javax.media.*;
    import javax.media.protocol.DataSource;
    import javax.media.protocol.ContentDescriptor;
    public class myCustomDataSource extends DataSource {
         myCustomDataSource(MediaLocator ml){}
         public void connect(){}
         public void disconnect(){}
         public void start(){}
         public void stop(){}
         public String getContentType() {
              return ContentDescriptor.CONTENT_UNKNOWN;
         public Object[] getControls() {
             return new Object[0];
         public Object getControl(String type) {
             return null;
         public Time getDuration(){
              return Time.TIME_UNKNOWN;
    }then, I create a basic class that use a player for playing my custom datasource:
    import java.awt.*;
    import java.awt.event.*;
    import javax.swing.*;
    import javax.media.*;
    import javax.media.protocol.DataSource;
    public class VideoPlayer extends JFrame {
         Player player = null;
         private JPanel contentPane;
         public static void main(String args[]){
              String mediaFile = "http://noodle.med.yale.edu/demos/dsr_arrow.mpg";
              MediaLocator locator = new MediaLocator(mediaFile);
              myCustomDataSource mcds = new myCustomDataSource(locator);
              (new VideoPlayer(mcds)).setVisible(true);
         public VideoPlayer(myCustomDataSource ds) {
              super("Example");
              setSize(400,400);
              contentPane = (JPanel) this.getContentPane();
              addWindowListener(new myWindowAdapter());
              try {
                   player = Manager.createPlayer(ds);
                   player.addControllerListener(new controllerUpdate());
              }catch(Exception e){
                   System.err.println("Error loading the media. ("+e+")");
              if(player!=null) player.realize();      
         class controllerUpdate implements ControllerListener {      
              public synchronized void controllerUpdate(ControllerEvent e) {      
                   if(e instanceof RealizeCompleteEvent) {
                        Component visualArea = player.getVisualComponent();      
                        Component controlPanel = player.getControlPanelComponent();      
                        if(visualArea!= null)      
                             contentPane.add(visualArea, BorderLayout.CENTER);      
                        if(controlPanel != null)      
                             contentPane.add(controlPanel, BorderLayout.SOUTH);      
                        validate();      
                        player.prefetch();
                   if(e instanceof PrefetchCompleteEvent) {
                        player.start();
         class myWindowAdapter extends WindowAdapter {
              public void windowClosing(WindowEvent e){
                   if(player!=null) player.close();
                        System.exit(0);
    }when i run it i get the next error: Error loading the media. (javax.media.NoPlayerException: Cannot find a Player for: myCustomDataSource@be0e27)
    I dont know how i must fill the myCustomDataSource class constructor and abstract methods to run it.
    I test videoplayer class with a normal datasource and it works
    sorry for my bad english
    Thanks so much

    ok, thanks for answering,
    I see a sun webpage example maybe can help: http://java.sun.com/javase/technologies/desktop/media/jmf/2.1.1/solutions/JpegImagesToMovie.html
    In that example, a custom datasource is declared and then a processor is created with that custom datasource using Manager.createProcessor. For that, custom data source class is declared inside class where processor is used. Im trying to do it but it doesnt work, i get the same error.
    thanks in advance
    import java.awt.*;
    import java.awt.event.*;
    import java.util.Vector;
    import java.io.*;
    import javax.swing.*;
    import javax.media.*;
    import javax.media.protocol.ContentDescriptor;
    import javax.media.protocol.DataSource;
    public class VideoPlayer extends JFrame {
         Processor p = null;
         private JPanel contentPane;
         myCustomDataSource mcds = null;
         public static void main(String args[]){
              String locator = "C:/video.avi";
              (new VideoPlayer(locator)).setVisible(true);
         public VideoPlayer(String locator) {
              super("Example");
              setSize(400,400);
              contentPane = (JPanel) this.getContentPane();
              addWindowListener(new myWindowAdapter());
              mcds = new myCustomDataSource(locator);
              try {
                   p = Manager.createProcessor(mcds);
              }catch(Exception e){
                   System.err.println("Error loading the media. ("+e+")");
              if(p != null){
                   //p.setContentDescriptor(null);
                   p.addControllerListener(new controllerUpdate());
                   p.configure();      
         class controllerUpdate implements ControllerListener {      
              public synchronized void controllerUpdate(ControllerEvent e) {      
                   if(e instanceof ConfigureCompleteEvent) {
                        p.realize();
                   if(e instanceof RealizeCompleteEvent) {
                        Component visualArea = p.getVisualComponent();      
                        Component controlPanel = p.getControlPanelComponent();      
                        if(visualArea!= null)      
                             contentPane.add(visualArea, BorderLayout.CENTER);      
                        if(controlPanel != null)      
                             contentPane.add(controlPanel, BorderLayout.SOUTH);      
                        validate();      
                        p.prefetch();
                   if(e instanceof PrefetchCompleteEvent) {
                        p.start();
         class myWindowAdapter extends WindowAdapter {
              public void windowClosing(WindowEvent e){
                   if(p != null) p.close();
                        System.exit(0);
         class myCustomDataSource extends DataSource {
              MediaLocator ml = null;
              myCustomDataSource(String locator){
                   ml = new MediaLocator("file://"+locator);
                   super.setLocator(ml);
              public void connect(){}
              public void disconnect(){}
              public void start(){}
              public void stop(){}
              public String getContentType() {
                   return ContentDescriptor.CONTENT_UNKNOWN;
              public Object[] getControls() {
                  return new Object[0];
              public Object getControl(String type) {
                  return null;
              public Time getDuration(){
                   return Time.TIME_UNKNOWN;
    }

  • Creating a custom datasource. Please help!

    Hi Experts,
    I'm creating a custom datasource in RSO2 to extract data from a custom view based on three z tables. I have filled the view with the join conditions and the fields. After activating it, I have checked the data and it's correct. The problem appears when I try to create a custom datasource based on this table, the following error appears:
    Invalid extract structure template ZXXX of DataSource ZXXX.
    You tried to generate an extract structure with the template structure ZXXX. This operation failed, because the template structure quantity fields or currency fields, for example, field AMOUNT refer to a different table.
    I have checked the quantity and currency fields in order to add the reference tables and fields. For example:
    0AMOUNT: ref table: EIPA; ref field: BWAER.
    The problem is that I don´t know how to join both tables (EIPA and my Zview) because the key is different in the tables and only non relevant fields like Net Price appear in both tables.
    If I add only the field EIPA-WAER, the data selectedis not correct, obviously.
    Please, what can I do? Any ideas?
    Thanks in advance! Any help will be more than welcome. Thanks!

    Hi all,
    I have created an Infoset but the problem persists. If I only join the tables I need, when I generate de Infoset, a warning appears telling that some fields (currency and quantity) will not be filled. At this point, if I execute de datasource in RSA3, the number of records is correct but these fields are empty.
    If I add the tables that appear in the warning message, the number of records extracted is 0, because these "auxiliar" tables only contain information about currency units but they don't have the same key values so thay cannot join.
    I have a question now... the tables that I have to upload into BI are also Z Tables. What happens if I ask my development team to add currency and quantity units in these tables? I think my problem will be solved if unit fields appear in the original tables. Would it be enough?
    Any suggestions on it?
    Thanks in advance!
    Edited by: Iñaki Rueda on Dec 29, 2009 12:02 PM

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