Is there any chance you are storing a \0 char inside the xml ?
Jacob A. Camp wrote:
>
> Hello,
>
> I've been looking into an issue that a few of our programmers have looked
> at as well and it left us all wondering. Basically, our database has a
> VARCHAR column that has an XML file written to it when the object is
> manipulated. I can use a tool to view the database file and I can ensure
> that the entire field is filled out correctly and the XML is correctly
> formed.
>
> The field in the database contains 8955 characters and when I execute the
> sqlite3_column_text() on that specific column to access the data, the
> const unsigned char* that's returned only contains 2030 characters and the
> XML file that I'm trying to reconstruct from it then becomes unusable. I
> even attempted digging into the SQLite class and it seems that this value
> is obtained from the official function calls.
>
> In sqlite3.c:
>
> static Mem *columnMem(sqlite3_stmt *pStmt, int i){
> Vdbe *pVm;
> int vals;
> Mem *pOut;
>
> pVm = (Vdbe *)pStmt;
> if( pVm && pVm->pResultSet!=0 && i<pVm->nResColumn && i>=0 ){
> sqlite3_mutex_enter(pVm->db->mutex);
> vals = sqlite3_data_count(pStmt);
> pOut = &pVm->pResultSet[i];
>
> After the last line has been executed pOut contains members z and zMalloc
> which both contain the same memory location that points to the char* that
> contains the first 2030 characters and none of the rest that are stored in
> the VARCHAR field.
>
> Is there some limit to the amount of data that can be returned by this
> function? I read over most of the documentation and didn't see it
> mentioning any sort of restriction.
>
> Thanks in advance,
> --Jake
>
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