void DataFileDB::LoadContent()
{
dbtype=StringToType(ReadFile("type"));
if(dbtype==DBSingleFile)
{
Data::operator=(toval(ReadFile("value")));
}
else if(dbtype==DBStringKeys)
{
Data keys=toval(ReadFile("keys"));
status=vector<DBEntryStatus>(keys.Size());
MakeList(keys.Size());
for(size_t i=0; i<vec.size(); i++)
{
vec[i]=keys[i];
status[i].ondisk=true;
}
}
else
throw Error::NotYetImplemented("DataFileDB::LoadContent()");
Dump("LoadContent()","load old data");
}
void DataFileDB::LoadCache(int index) const
{
if(index < 0 || (size_t)index >= status.size())
throw Error::Invalid("DataFileDB::LoadCache","invalid index "+ToString(index));
if(dbtype==DBStringKeys)
{
Touch(index);
if(!status[index].ondisk)
return;
Dump("DataFileDB::LoadCache(int)","loading entry "+ToString(index)+": "+tostr(vec[index][0]).String());
string filename=FileName(vec[index][0].String());
security.ReadFile(filename);
ifstream F(filename.c_str());
if(!F)
throw Error::IO("DataFileDB::LoadCache(int)","unable to read "+filename);
string buffer;
while(F)
buffer+=readline(F);
F.close();
status[index].ondisk=false;
vec[index][1]=toval(buffer);
}
else
throw Error::NotYetImplemented("DataFileDB::LoadCache()");
}
Data ReadValue(const string& filename)
{
ifstream F(filename.c_str());
if(!F)
throw Error::IO("ReadValue(const string&)","file "+string(filename)+" not found");
string buffer;
while(F)
buffer+=readline(F);
return toval(buffer);
}
jsval toval( const BSONElement& e ) {
switch( e.type() ) {
case EOO:
case jstNULL:
case Undefined:
return JSVAL_NULL;
case NumberDouble:
case NumberInt:
return toval( e.number() );
case Symbol: // TODO: should we make a special class for this
case String:
return toval( e.valuestr() );
case Bool:
return e.boolean() ? JSVAL_TRUE : JSVAL_FALSE;
case Object: {
BSONObj embed = e.embeddedObject().getOwned();
return toval( &embed );
}
case Array: {
BSONObj embed = e.embeddedObject().getOwned();
if ( embed.isEmpty() ) {
return OBJECT_TO_JSVAL( JS_NewArrayObject( _context , 0 , 0 ) );
}
int n = embed.nFields();
JSObject * array = JS_NewArrayObject( _context , n , 0 );
assert( array );
jsval myarray = OBJECT_TO_JSVAL( array );
for ( int i=0; i<n; i++ ) {
jsval v = toval( embed[i] );
assert( JS_SetElement( _context , array , i , &v ) );
}
return myarray;
}
case jstOID: {
OID oid = e.__oid();
JSObject * o = JS_NewObject( _context , &object_id_class , 0 , 0 );
setProperty( o , "str" , toval( oid.str().c_str() ) );
return OBJECT_TO_JSVAL( o );
}
case RegEx: {
const char * flags = e.regexFlags();
uintN flagNumber = 0;
while ( *flags ) {
switch ( *flags ) {
case 'g':
flagNumber |= JSREG_GLOB;
break;
case 'i':
flagNumber |= JSREG_FOLD;
break;
case 'm':
flagNumber |= JSREG_MULTILINE;
break;
//case 'y': flagNumber |= JSREG_STICKY; break;
default:
log() << "warning: unknown regex flag:" << *flags << endl;
}
flags++;
}
JSObject * r = JS_NewRegExpObject( _context , (char*)e.regex() , strlen( e.regex() ) , flagNumber );
assert( r );
return OBJECT_TO_JSVAL( r );
}
case Code: {
JSFunction * func = compileFunction( e.valuestr() );
return OBJECT_TO_JSVAL( JS_GetFunctionObject( func ) );
}
case CodeWScope: {
JSFunction * func = compileFunction( e.codeWScopeCode() );
BSONObj extraScope = e.codeWScopeObject();
if ( ! extraScope.isEmpty() ) {
log() << "warning: CodeWScope doesn't transfer to db.eval" << endl;
}
return OBJECT_TO_JSVAL( JS_GetFunctionObject( func ) );
}
case Date:
return OBJECT_TO_JSVAL( js_NewDateObjectMsec( _context , (jsdouble) e.date().millis ) );
case MinKey:
return OBJECT_TO_JSVAL( JS_NewObject( _context , &minkey_class , 0 , 0 ) );
case MaxKey:
return OBJECT_TO_JSVAL( JS_NewObject( _context , &maxkey_class , 0 , 0 ) );
case Timestamp: {
JSObject * o = JS_NewObject( _context , ×tamp_class , 0 , 0 );
setProperty( o , "t" , toval( (double)(e.timestampTime()) ) );
setProperty( o , "i" , toval( (double)(e.timestampInc()) ) );
return OBJECT_TO_JSVAL( o );
}
case NumberLong: {
boost::uint64_t val = (boost::uint64_t)e.numberLong();
JSObject * o = JS_NewObject( _context , &numberlong_class , 0 , 0 );
setProperty( o , "floatApprox" , toval( (double)(boost::int64_t)( val ) ) );
if ( (boost::int64_t)val != (boost::int64_t)(double)(boost::int64_t)( val ) ) {
// using 2 doubles here instead of a single double because certain double
// bit patterns represent undefined values and sm might trash them
setProperty( o , "top" , toval( (double)(boost::uint32_t)( val >> 32 ) ) );
setProperty( o , "bottom" , toval( (double)(boost::uint32_t)( val & 0x00000000ffffffff ) ) );
}
return OBJECT_TO_JSVAL( o );
}
case DBRef: {
JSObject * o = JS_NewObject( _context , &dbpointer_class , 0 , 0 );
setProperty( o , "ns" , toval( e.dbrefNS() ) );
JSObject * oid = JS_NewObject( _context , &object_id_class , 0 , 0 );
setProperty( oid , "str" , toval( e.dbrefOID().str().c_str() ) );
setProperty( o , "id" , OBJECT_TO_JSVAL( oid ) );
return OBJECT_TO_JSVAL( o );
}
case BinData: {
JSObject * o = JS_NewObject( _context , &bindata_class , 0 , 0 );
int len;
const char * data = e.binData( len );
assert( JS_SetPrivate( _context , o , new BinDataHolder( data ) ) );
setProperty( o , "len" , toval( len ) );
setProperty( o , "type" , toval( (int)e.binDataType() ) );
return OBJECT_TO_JSVAL( o );
}
}
