void IndexSpec::_init(){
assert( keyPattern.objsize() );
string pluginName = IndexPlugin::findPluginName( keyPattern );
BSONObjBuilder nullKeyB;
BSONObjIterator i( keyPattern );
while( i.more() ) {
BSONElement e = i.next();
_fieldNames.push_back( e.fieldName() );
_fixed.push_back( BSONElement() );
nullKeyB.appendNull( "" );
}
_nullKey = nullKeyB.obj();
BSONObjBuilder b;
b.appendNull( "" );
_nullObj = b.obj();
_nullElt = _nullObj.firstElement();
if ( pluginName.size() ){
IndexPlugin * plugin = IndexPlugin::get( pluginName );
if ( ! plugin ){
log() << "warning: can't find plugin [" << pluginName << "]" << endl;
}
else {
_indexType.reset( plugin->generate( this ) );
}
}
_finishedInit = true;
}
void IndexSpec::_init() {
verify( keyPattern.objsize() );
// some basics
_nFields = keyPattern.nFields();
_sparse = info["sparse"].trueValue();
uassert( 13529 , "sparse only works for single field keys" , ! _sparse || _nFields );
{
// build _nullKey
BSONObjBuilder b;
BSONObjIterator i( keyPattern );
while( i.more() ) {
BSONElement e = i.next();
_fieldNames.push_back( e.fieldName() );
_fixed.push_back( BSONElement() );
b.appendNull( "" );
}
_nullKey = b.obj();
}
{
// _nullElt
BSONObjBuilder b;
b.appendNull( "" );
_nullObj = b.obj();
_nullElt = _nullObj.firstElement();
}
{
// _undefinedElt
BSONObjBuilder b;
b.appendUndefined( "" );
_undefinedObj = b.obj();
_undefinedElt = _undefinedObj.firstElement();
}
{
// handle plugins
string pluginName = IndexPlugin::findPluginName( keyPattern );
if ( pluginName.size() ) {
IndexPlugin * plugin = IndexPlugin::get( pluginName );
if ( ! plugin ) {
log() << "warning: can't find plugin [" << pluginName << "]" << endl;
}
else {
_indexType.reset( plugin->generate( this ) );
}
}
}
_finishedInit = true;
}