Wrong offset value of "Write File.vi"

Hi LVers,
to log incomming UDP messages I am using two files. The header (fixed
length) is stored in the first file and the message body (variable
length) is stored inthe second file. As an extension to the header
information I want to store the sctual offset (position of the file
pointer) of the datalog file. The "WriteFile.vi" is giving this
information as an output value.
While reading the headerlog I saw that the output value is sporadically
the same for two or three calls of the VI.
Thanks in advance for any help.
Hans J"org Beesterm"oller

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Write blob value into a file

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CREATE OR REPLACE PROCEDURE Write_Binary_file
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But this code seems not working. The problem is it always creates a file with a bit bigger size than initial one. So jpg copy will be never be opened with any viewer.
Can anybody explain this issue and give any workaround?
Thanks

You need a code block like this:
DECLARE
   l_file       UTL_FILE.FILE_TYPE;
   l_buffer     RAW (32767);
   l_amount     BINARY_INTEGER     := 32767;
   l_pos        INTEGER            := 1;
   l_blob       BLOB;
   l_blob_len   INTEGER;
BEGIN
-- Open the destination file. Note the third parameter "wb"
   l_file := UTL_FILE.FOPEN ('TEST_DIR', 'extract3.jpg', 'wb');
-- Get LOB locator
FOR rec IN (
SELECT blob_col l_blob
      FROM test_my_blob
   --AND ROWNUM =1
LOOP
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-- Read chunks of the BLOB and write them to the file
-- until complete.
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commit;
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Write File.vi does not allow for offset entry

I am using a Write File.vi to write data to my hard drive like always but I have never used the offset before and it is not allowing me to enter an offset value and the error message does not make sense. The error says you have wired different data types but then say source long, sink long which are the same in my eyes.
Is there a trick to using the offset?

If you are writing to file different data types, the use of input is not allowed because it depends on the number of bytes used to store the type (that's why it should be just one type)

Why can´t I wire the offset input in the Write File Function when I use datalog files ?

Hi !
I have a datalog file, in which I save variant data several times in diferents VIs, I runs these randomly, and I would like rewrite only a part of the file, but I can´t wire the offset input in the Write File function to indicates the begins and save the data in the point that I want.
I need your help thanks.
Attachments:
Second Write in a datalog file.vi ‏19 KB

Hello.
I THINK that the reason why the offset input is disabled when you are working with datalog files is that you do not know how many bytes each entry of the data structure will ocupy.
When you have a binary file where you store, for example, an array of double precision floating-point numbers, you know that each number ocupies 8 bytes, so you know that when you want to read the 21st number of the array you need to skip the first 160 bytes (20 numbers x 8 bytes/number).
However, with datalog files you can store very diverse data structure, usually including strings, like in your case, which means that you do not know how many bytes to skip to be able to read or write to some particular variable of your data structure.
If what you want to do is to not overwrite the contents of an existing file, but to append to it, what you probably will have to do is read the whole contents, append to the data in your program, and write it all again.
Hope this helps,
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Error in using ABAP OLE wrong cell value

Dear All..
I'm facing a problem while using ABAP OLE..
the problem is the ABAP OLE writes the wrong value in Excel file
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yes it is clear, but how excel manage the passed data is unclear.
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DATA : ld_val(20).
WRITE value1 TO ld_val CURRENCY CURR.
REPLACE ALL OCCURRENCES OF '.' IN ld_val WITH space.
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the key part of the colormatrixfilter is:
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JNI Invocation: open file in Java, write file in CPP

Hello,
Warning: I am a dunce, bad CPP code ahead!
Using JNI invocation, I am trying to read a binary file in Java and write it in CPP.
Everything compiles and runs without error, but the input and output jpg files are of course different.
TIA to any help,
kirst
(begin ByteMe.java)
import java.io.*;
public class ByteMe
    // Returns the contents of the file in a byte array.
    public byte[] getBytesFromFile(String strInfo) throws IOException
        System.out.println("Testing:" + strInfo);
        File file = new File("1.jpg");
        InputStream is = new FileInputStream(file);
        // Get the size of the file
        long length = file.length();
        // Create the byte array to hold the data
        byte[] bytes = new byte[(int)length];
        // Read in the bytes
        int offset = 0;
        int numRead = 0;
        while (offset < bytes.length
               && (numRead=is.read(bytes, offset, bytes.length-offset)) >= 0) {
            offset += numRead;
        // Ensure all the bytes have been read in
        if (offset < bytes.length)
            throw new IOException("Could not completely read file "+file.getName());
        // Close the input stream and return bytes
        is.close();
        return bytes;
    public ByteMe()
          //System.out.println("in constructor");
}(end ByteMe.java)
(begin ByteMe.cpp)
#include <stdlib.h>
#include <string.h>
#include <jni.h>
#include <windows.h>
// for file operations:
#include <fstream>
int main( int argc, char *argv[] )
     JNIEnv *env;
     JavaVM *jvm;
     JavaVMInitArgs vm_args;
     JavaVMOption options[5];
     jint res;
     jclass cls;
     jmethodID mid;
     jstring jstr;
     jobject obj_print;
     options[0].optionString = "-Xms4M";
     options[1].optionString = "-Xmx64M";
     options[2].optionString = "-Xss512K";
     options[3].optionString = "-Xoss400K";
     options[4].optionString = "-Djava.class.path=.";
     vm_args.version = JNI_VERSION_1_4;
     vm_args.options = options;
     vm_args.nOptions = 5;
     vm_args.ignoreUnrecognized = JNI_FALSE;
     // Create the Java VM
     res = JNI_CreateJavaVM(&jvm,(void**)&env,&vm_args);
     if (res < 0)
          printf("Can't create Java VM");
          goto destroy;
     cls = env->FindClass("ByteMe");
     if (cls == 0)
          printf("Can't find ByteMe class");
          goto destroy;
     jmethodID id_construct = env->GetMethodID(cls,"<init>","()V");
     jstr = env->NewStringUTF(" from C++\n");
     obj_print = env->NewObject(cls,id_construct);
     // signature obtained using javap -s -p ByteMe
     mid = env->GetMethodID(cls, "getBytesFromFile", "(Ljava/lang/String;)[B");
     if (mid == 0)
          printf("Can't find ByteMe.getBytesFromFile\n");
          goto destroy;
     else
          jbyteArray jbuf = (jbyteArray) env->CallObjectMethod(obj_print,mid,jstr);
          jlong size = jsize(jbuf);
          printf("size is: %d\n", size); // size shown in output is
          std::ofstream out("data.jpg", std::ios::binary);
          out.write ((const char *)jbuf, 100000);
     destroy:
         if (env->ExceptionOccurred())
            env->ExceptionDescribe();
    jvm->DestroyJavaVM();
}(end ByteMe.cpp)

Hello,
Me again. Well, not such a dunce after all. Here is code that works correctly, and compiles with no errors and no warnings.
Will much appreciate help with clean-up code.
TIA,
kirst
(begin ByteMe.java)
import java.io.*;
public class ByteMe
    public long getFilezize(String strInfo) throws IOException
          // demonstrates String parameter passed from CPP to Java:
          System.out.println("(getFilesize) Hello world" + strInfo);
          File file = new File("1.bmp");
          InputStream is = new FileInputStream(file);
          // Get the size of the file
          long length = file.length();
          is.close();
          return length;
    // Returns the contents of the file in a byte array.
    public byte[] getBytesFromFile(String strInfo) throws IOException
        System.out.println("(getBytesFromFile) Hello world" + strInfo);
        File file = new File("1.bmp");
        InputStream is = new FileInputStream(file);
        // Get the size of the file
        long length = file.length();
        System.out.println("length is: " + String.valueOf(length));
        // Create the byte array to hold the data
        byte[] bytes = new byte[(int)length];
        // Read in the bytes
        int offset = 0;
        int numRead = 0;
        while (offset < bytes.length && (numRead=is.read(bytes, offset, bytes.length-offset)) >= 0)
            offset += numRead;
        // Ensure all the bytes have been read in
        if (offset < bytes.length)
            throw new IOException("Could not completely read file "+ file.getName());
        // Close the input stream and return bytes
        is.close();
        return bytes;
    public ByteMe()
          //System.out.println("in constructor");
}(end ByteMe.java)
(begin ByteMe.cpp)
          Signature obtained with command:
               "C:\Program Files\Java\jdk1.5.0_15\bin\javap.exe" -s -p ByteMe
               Compiled from "ByteMe.java"
               public class ByteMe extends java.lang.Object{
               public long getFilezize(java.lang.String)   throws java.io.IOException;
                 Signature: (Ljava/lang/String;)J
               public byte[] getBytesFromFile(java.lang.String)   throws java.io.IOException;
                 Signature: (Ljava/lang/String;)[B
               public ByteMe();
                 Signature: ()V
     Compiled VC++ 2005 Express, run on Vista
#include <stdlib.h>
#include <string.h>
#include <jni.h>
// file operations
#include <fstream>
int main( int argc, char *argv[] )
     JNIEnv *env;
     JavaVM *jvm;
     JavaVMInitArgs vm_args;
     JavaVMOption options[5];
     jint res;
     jclass cls;
     jmethodID mid;
     jmethodID sizeid;
     jstring jstr;
     jobject obj_print;
     jlong filesize;
     options[0].optionString = "-Xms4M";
     options[1].optionString = "-Xmx64M";
     options[2].optionString = "-Xss512K";
     options[3].optionString = "-Xoss400K";
     options[4].optionString = "-Djava.class.path=.";
     vm_args.version = JNI_VERSION_1_4;
     vm_args.options = options;
     vm_args.nOptions = 5;
     vm_args.ignoreUnrecognized = JNI_FALSE;
     // Create the Java VM
     res = JNI_CreateJavaVM(&jvm,(void**)&env,&vm_args);
     if (res < 0)
          printf("Can't create Java VM");
          goto destroy;
     cls = env->FindClass("ByteMe");
     if (cls == 0)
          printf("Can't find ByteMe class");
          goto destroy;
     jmethodID id_construct = env->GetMethodID(cls,"<init>","()V");
     printf("%s\n",id_construct);
     jstr = env->NewStringUTF(" from C++!\n");
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          // Normally not useful
          printf("Out of memory (could not instantiate new string jstr)\n");
          goto destroy;
     obj_print = env->NewObject(cls,id_construct);
     //BEGIN BLOCK to get file size
     sizeid = env->GetMethodID(cls, "getFilezize", "(Ljava/lang/String;)J");
     if (sizeid == 0)
          printf("Can't find ByteMe.getFilezize\n");
          goto destroy;
     else
          printf("got here\n");
          filesize =(jlong) env->CallObjectMethod(obj_print,sizeid,jstr);
          printf("got filesize\n");
     // END BLOCK to get file size
     // BEGIN BLOCK to write file
     mid = env->GetMethodID(cls, "getBytesFromFile", "(Ljava/lang/String;)[B");
     if (mid == 0)
          printf("Can't find ByteMe.getBytesFromFile\n");
          goto destroy;
     else
          jbyteArray ret =(jbyteArray) env->CallObjectMethod(obj_print,mid,jstr);
          // Access the bytes:
          jbyte *retdata = env->GetByteArrayElements(ret, NULL);
          // write the file
          std::ofstream out("data.bmp", std::ios::binary);
          //out.write ((const char *)retdata, 921654);
          out.write ((const char *)retdata, (long)filesize);
     // END BLOCK to write file
     destroy:
         if (env->ExceptionOccurred())
            env->ExceptionDescribe();
    jvm->DestroyJavaVM();
}(end ByteMe.cpp)

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Hello,
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Please excuse my bad English grammar as I am not a native English speaker, but have picked it up living in Canada for the last 20 years :-)
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David
Edited by: Broad_Arrow on May 18, 2009 11:18 PM

May 20 2009
There is a Fonts Used macro writer_printAllFonts.sxw Further checking this is the wrong StarBasic macro. The one I use came from an OOo forum I think. I use it with SO7, SO8 and SO9.
It is at the end of this message. To install it:
[1] Copy the macro below to the clipboard
[2] Go to Tools>Macros>Organize Macros>Basic>Standard
Select New. Highlight what is there, paste, and close.
[3] Go to Tools>Customize>Menus>Tools
Highlight Word Count, then go to Add>Macros>My Macros>Standard>Module1
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Phil
REM ***** BASIC *****
Sub Main
End Sub
Sub FontsUsed 'Version 1 John Vigor 4/25/06
'List fonts used in Writer document. Appears to work in normal text,
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'within a Table.
oDoc = ThisComponent
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fonts = fonts + 1 : aFonts(fonts) = CurrentFont
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PartEnumerator(partEnum,CurrentFont,fonts,aFonts())
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aFonts(fonts) = "NEW FONTS, IF ANY, FOUND IN FRAMES:"
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thisFrame = oFrames.getByIndex(I)
partEnum = thisFrame.createEnumeration
PartEnumerator(partEnum,CurrentFont,fonts,aFonts())
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s = s & aFonts(I) & Chr(10)
Next
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End
Else
NewDoc = StarDesktop.loadComponentFromURL("private:factory/swriter"," blank",O,Array())
oVC = NewDoc.CurrentController.getViewCursor
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While partEnum.hasMoreElements
thisElement = partEnum.nextElement
If thisElement.supportsService("com.sun.star.text.Paragraph") then
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PortionEnumerator(portionEnum,CurrentFont,fonts,aFonts())
ElseIf thisElement. supportsService ("com.sun.star.text.TextTab le") then
Cols = thisElement.getColumns.Count - 1
Rows = thisElement.getRows.Count - 1
For C = 0 to Cols
For R = 0 to Rows
thisCell = thisElement.getCellByPosition(C,R)
cellEnum = thisCell.createEnumeration
While cellEnum.hasMoreElements
thisPara = cellEnum.nextElement
portionEnum = thisPara.createEnumeration
PortionEnumerator(portionEnum,CurrentFont,fonts,aFonts())
Wend
Next
Next
EndIf
Wend
End Sub
Sub PortionEnumerator(portionEnum,CurrentFont,fonts,aFonts())
Dim found as Boolean
While portionEnum.hasMoreElements
thisPortion = portionEnum.nextElement
thisFont = thisPortion.charFontName
If thisFont <> CurrentFont then
For I = 1 to fonts
If aFonts(I) = thisFont then found = true: Exit For
Next
If found then
CurrentFont = thisFont : found = false Else
fonts = fonts + 1 : ReDim Preserve aFonts(fonts)
aFonts(fonts) = thisFont : CurrentFont = thisFont
EndIF
EndIf
Wend
End Sub

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Did somebody already run the Write File to Citadel Example with success ?
This exemple aims at Importing Spreadsheet Data to the Citadel Database, and is given in the NI developer Zone --> Development Library --> Labview --> DSC --> Data Logging.
I can run the exemple as described without any visible problem. But when I look at Citadel (through MAX), I can't find any trace of the data I imported (sine_wave_one for instance). According to the SampleSpreadsheet.csv I used for import, I should find a trace in the database around the 21st of march 2002...
But I found nothing.
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Thanks,
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I am not sure how savvy LabVIEW programmer you are, but if you feel confident you can go ahead and try to debug the code.
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I have a JFrame with a JTextField which requires the user to enter a value. When they click a JButton "OK". It writes the value to a text file and closes the frame using FileWriter. If they click clear button it writes the value "" to the file. What I want to do is when the frame opens it reads the value from the text file. I have been trying to use FileReader but have not been able to write the code correctly. Any help would be greatly appreciated.
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File f = yourfile;
BufferedReader br = new BufferedReader(new FileReader(f));
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Hi,
Currently we are using Oracle 10g which is installed on a Unix server and on the same server there is a directory under which some files are being exported/downloaded by the db.
We are having DEDICATED DB INSTANCE on the SHARED server, and not a DEDICATED SERVER.
Now we need to migrate from Oracle 10g to 11g, but due to some complaince issue, we have been asked to create those directories on some other server. We have identified a Windows server and can create directories.
Now I request any expert to pls suggest/guide me that how can the db (on Unix server) export/write files on another Windows server?
I read in a thread that the server (where files should be exported) should be MOUNTED on the server where db is physically installed.
Pls help me here.....
Edited by: 950010 on Jul 31, 2012 7:00 AM

950010 wrote:
As I wrote in my question that due to compliance issue we have been asked to create the directory (that is currently on the same unix server on which our db is physically installed) in any other server (no matter unix or windows).And if that remote server is not available? Or if network connectivity to the remote server fails? Or if there is severe network congestion between the Oracle server and remote server? What then?
How is the process on the local server suppose to deal with errors when it attempts to create a CSV file on the remote server? Or deal with network bottlenecks that results in severe performance degradation when trying to create a CSV file? Or if there lacks freespace for creating the CSV file?
What about security? How is the local Oracle server to authenticate itself with the remote server? How is the remote server to protect that directory share against unauthorised access?
How is this remote server going to provide access to authorised s/w to these CSV files?
Who (local or remote processes) is going to manage this directory share and ensure old CSV files are deleted and that there is sufficient freespace for new CSV files?
There are a LOT of questions that need to be asked... BEFORE deciding on HOW technically to do it. As the technical decision will be based on the functional requirements and how to best meet these.
Technically - there is Samba, NFS, FTP, SFTP, SCP, RDIST and a number of other methods that can be used. But without asking the above questions and getting proper business answers, selecting a specific technical method is very much premature.
You are asking the wrong questions, and in the wrong forum. You need to determine the business requirements first.

FileAdapter Write file with empty payload always error

Hi All ,
I run on 10.1.3.3.1 with patch Patch 7375080 only esb not have bpel.I have to use webservice for verify data.
and response with set of objects.
I have 2 important questions about write file with FileAdapter.
1. I want to not create file if not have error from validate data but
with this xsl tranform if I uncomment when value of condition is 'N' that will error cause single line payload.
<xsl:for-each select="/tns:populateYFRIResponseElement/tns:result/tns:wrongLines">

<imp1:Child-Element>
<imp1:FrameNo>
<xsl:value-of select="concat('"',tns:frameNo,'"')"/>
</imp1:FrameNo>
<imp1:EngineNo>
<xsl:value-of select="concat('"',tns:engineNo,'"')"/>
</imp1:EngineNo>
</imp1:Child-Element>

</xsl:for-each>
but if I comment if condition 'Y' FileAdapter create csv files with empty like "","" .
2.
I must write log file with FileAdapter . I want to append file so I add attribute Append=true
to wsdl
<jca:operation
LogicalDirectory="outgoingfile"
InteractionSpec="oracle.tip.adapter.file.outbound.FileInteractionSpec"
FileNamingConvention="YFRI%yyMMdd%.log"
NumberMessages="1"
Append = "true"
>
but when run that throws errors cause properties append not found.
I view class FileInteractionSpec that have append properties .I very confuse.
Any help would be appreciated.
Regards,
Weerawat

Hi
Thank for good answer.I am newbies in esb so I don't know that have routing expression before.
I'm so glad your answer very helpful before routing but same question 1 if I have detail must not write data like below
,import file name YFRI20090616165654.DAT at Tue Jun 16 16:59:26 GMT+07:00 2009 with number of data is 2 correct line is 2
"D",0,0,
,import file name YFRI20090616170202.DAT at Tue Jun 16 17:04:40 GMT+07:00 2009 with number of data is 12 correct line is 12
"D",0,0,
YFRI.txt,import file name YFRI.txt at Tue Jun 16 19:53:48 GMT+07:00 2009 with number of data is 2 error line is 2
"D",1,3,MTOCCode:ZE8839LZ SAA is not have in DB
"D",2,3,MTOCCode:ZE8839LZ SAA is not have in DB
with
<xsd:element name="LogFile">
<xsd:complexType>
<xsd:sequence>
<xsd:element name="FileName" type="xsd:string" nxsd:style="terminated" nxsd:terminatedBy="," nxsd:quotedBy=""">
</xsd:element>
<xsd:element name="Desc" type="xsd:string" nxsd:style="terminated" nxsd:terminatedBy="${eol}" nxsd:quotedBy=""">
</xsd:element>
<xsd:element name="Detail" nxsd:startsWith=""D"," maxOccurs="unbounded">
<xsd:complexType>
<xsd:sequence nxsd:style="array" nxsd:arrayTerminatedBy="${eol}">
<xsd:element name="line" type="xsd:string" nxsd:style="terminated" nxsd:terminatedBy="," nxsd:quotedBy="""/>
<xsd:element name="column" type="xsd:string" nxsd:style="terminated" nxsd:terminatedBy="," nxsd:quotedBy="""/>
<xsd:element name="desc" type="xsd:string" nxsd:style="terminated" nxsd:terminatedBy="${eol}" nxsd:quotedBy="""/>
</xsd:sequence>
</xsd:complexType>
</xsd:element>
</xsd:sequence>
</xsd:complexType>
</xsd:element>
ESB will display error payload If import not have verify error detail so I have to write 'D',0,0 (Detail,Line,Column).
In this situation how am I to do ?
In question 2 .Now I can append with
<jca:operation
LogicalDirectory="outgoingfile"
InteractionSpec="oracle.tip.adapter.file.outbound.FileInteractionSpec"
FileNamingConvention="YFRI%yyMMdd%.log"
NumberMessages="1"
OpaqueSchema="false"
Append="true"
>
</jca:operation>
Thank you
Weerawat

Weird error: "Cannot write file summary in a read-only environment"

Disclaimer: We are using an old version of bdb - 3.2.76 but are not able to easily upgrade.
We see this occasionally in production. From looking at the code it looks like critical eviction is happening since more memory is used then the limit we set then eviction is happening but then failing since the env is read only. I'm just wondering how it got to this point. we set the max size (je.maxMemory) to 1572864 bytes.
This is not urgent but is adding noise to logs so any suggestions would be welcome...
<application specific exception>
…causedBy com.sleepycat.je.DatabaseException: (JE 3.2.76) Cannot write file summary in a read-only environment
at com.sleepycat.je.cleaner.UtilizationProfile.putFileSummary(UtilizationProfile.java:720)
at com.sleepycat.je.cleaner.UtilizationProfile.flushFileSummary(UtilizationProfile.java:708)
at com.sleepycat.je.cleaner.UtilizationTracker.evictMemory(UtilizationTracker.java:120)
at com.sleepycat.je.evictor.Evictor.evictBatch(Evictor.java:314)
at com.sleepycat.je.evictor.Evictor.doEvict(Evictor.java:253)
at com.sleepycat.je.evictor.Evictor.doCriticalEviction(Evictor.java:279)
at com.sleepycat.je.dbi.CursorImpl.close(CursorImpl.java:690)
at com.sleepycat.je.dbi.CursorImpl.close(CursorImpl.java:660)
at com.sleepycat.je.Cursor.endRead(Cursor.java:1820)
at com.sleepycat.je.Cursor.retrieveNextAllowPhantoms(Cursor.java:1616)
at com.sleepycat.je.Cursor.retrieveNext(Cursor.java:1397)
at com.sleepycat.je.Cursor.getNext(Cursor.java:456)
...

Hi Nick,
It is strange to me also that this is happening in a read-only env. Looking at the code, we don't prevent this sort of eviction in the 3.2 release or later releases. Yet we've never seen this problem before.
This sort of eviction only happens when writing is occurring. Of course, in a read-only env there is no writing. The only way I can think of for this to occur in a read-only env is when there is a very large recovery interval -- the amount of log between the last checkpoint start and the end of the log. This can occur if you didn't close the env cleaning when you last wrote to it, or if the last checkpoint just happened to be very large.
So one thing you could try is to ensure that you have a small checkpoint when you write to the log, before opening it in read-only mode. To do this, just before you call Environment.close, call Environment.checkpoint(new CheckpointConfig().setForce(true)). This will do one checkpoint before closing the env, and then another during the close. The last checkpoint should be small.
If you can't do this, or it isn't sufficient, you could increase the je.cleaner.detailMaxMemoryPercentage env config property. This is the max amount of memory (% of total cache) used for the information that is being evicted. Since nothing can really be evicted in read-only mode, there is no harm in setting this to a much higher value than the default (2). I would try 10. This doesn't reserve or waste any memory, it just prevents this sort of eviction from occurring until a larger part of the cache is used. This is probably the simplest solution.
A third approach is to simply accept that this sort of eviction will be attempted, but try to prevent the exception. If you're willing to rebuild JE (and you're not a supported Oracle customer -- please contact us if you are), then you could simply replace the 'throws' statement with a 'return null' in src/com/sleepycat/je/cleaner/UtilizationProfile.java:
    private synchronized PackedOffsets putFileSummary(TrackedFileSummary tfs)
        throws DatabaseException {
        if (env.isReadOnly()) {
            throw new DatabaseException
                ("Cannot write file summary in a read-only environment");
        }--mark

Wrong offset value of "Write File.vi"

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