本文整理汇总了C++中bsonobj::iterator类的典型用法代码示例。如果您正苦于以下问题：C++ iterator类的具体用法？C++ iterator怎么用？C++ iterator使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。
在下文中一共展示了iterator类的11个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: process
void MongoSchema::process(){
//std::cout << "Processing " << m_dbname << "." << m_col << std::endl;
std::string querystr;
querystr.clear();
querystr.append(m_dbname);
querystr.append(".");
querystr.append(m_col);
int recordscount = m_conn->count(querystr);
//std::cout << "count:" << recordscount << std::endl;
std::auto_ptr<mongo::DBClientCursor> cursor = m_conn->query(querystr, mongo::Query());
//std::set<std::string> fields;
while(cursor->more()){
mongo::BSONObj bo = cursor->next();
for( BSONObj::iterator i = bo.begin(); i.more(); ) {
BSONElement e = i.next();
if(skipField(e.fieldName())){
continue;
}
if(e.isSimpleType()){
hashmap::const_iterator keyexsit = m_map.find(e.fieldName());
SchemaModel* sm = new SchemaModel();
if(keyexsit != m_map.end()){
sm = &m_map[e.fieldName()];
sm->count ++;
}else{
sm->count = 1;
sm->datatype = getType(e);
m_map[e.fieldName()] = *sm;
}
}else if(e.isABSONObj()){
int depth = 0;
std::string parent = e.fieldName();
extractBSON(e.Obj(), depth, parent);
}
}
}
BSONObjBuilder bOb;
BSONArrayBuilder bArr;
std::tr1::hash<std::string> hashfunc = m_map.hash_function();
for( hashmap::const_iterator i = m_map.begin(), e = m_map.end() ; i != e ; ++i ) {
SchemaModel sm = i->second;
float percentage = (float)sm.count / (float)recordscount * 100.0;
std::cout.precision(4);
BSONObj bo = BSON( "field" << i->first << "percent" << percentage << "datatype" << sm.datatype );
bArr.append(bo);
//std::cout << i->first << " -> "<< "Percent: "<< percentage << " (hash = " << hashfunc( i->first ) << ")" << "\r\n";
}
bOb.append(m_col, bArr.arr());
m_schema = bOb.obj();
}示例2: compoundObjectResponse
/* ****************************************************************************
*
* compoundObjectResponse -
*/
void compoundObjectResponse(orion::CompoundValueNode* cvP, const BSONElement& be)
{
BSONObj obj = be.embeddedObject();
cvP->valueType = orion::ValueTypeObject;
for (BSONObj::iterator i = obj.begin(); i.more();)
{
BSONElement e = i.next();
addCompoundNode(cvP, e);
}
}示例3: ls
BSONObj ls(const BSONObj& args) {
BSONObj o = listFiles(args);
if( !o.isEmpty() ) {
for( BSONObj::iterator i = o.firstElement().Obj().begin(); i.more(); ) {
BSONObj f = i.next().Obj();
cout << f["name"].String();
if( f["isDirectory"].trueValue() ) cout << '/';
cout << '\n';
}
cout.flush();
}
return BSONObj();
}示例4: mongoHeader
void MongoListModel::mongoHeader() const
{
BSONObj objOne = mongoDatabase->findOne("mongolab_database.random_data",Query());
mongoHeaderDataList.clear();
for ( BSONObj::iterator iter = objOne.begin(); iter.more(); )
{
BSONElement element = iter.next();
QString key = QString::fromStdString( element.fieldName() );
if ( key == "_id" ) continue;
mongoHeaderDataList.append(key);
}
}示例5: ls
BSONObj ls(const BSONObj& args, void* data) {
BSONArrayBuilder ret;
BSONObj o = listFiles(args, data);
if (!o.isEmpty()) {
for (BSONObj::iterator i = o.firstElement().Obj().begin(); i.more();) {
BSONObj f = i.next().Obj();
string name = f["name"].String();
if (f["isDirectory"].trueValue()) {
name += '/';
}
ret << name;
}
}
return BSON("" << ret.arr());
}示例6: Meta2ServerInfo
int Meta2ServerInfo(const TMeta &m, ServerInfo &si)
{
if(m.data.empty()){
log(Warn, "meta id:%lld Meta2ServerInfo meta.data empty", m.serverId);
return -1;
}
BSONObj bo(m.data.c_str());
size_t idx = 0;
for( BSONObj::iterator i = bo.begin(); i.more() && idx < sizeof(ServerInfoCodec) / sizeof(CodecPair<ServerInfo>); idx++) {
BSONElement e = i.next();
int ret = ServerInfoCodec[idx].codec->decode(&si, e);
if(ret != 0){
log(Warn, "decode ServerInfo name:%s error occure", ServerInfoCodec[idx].name);
return -1;
}
}
return 0;
}示例7: unmarSessionData
int unmarSessionData(const std::string &xlog, SessionData *info, bool checkName = true)
{
BSONObj bo(xlog.c_str());
size_t idx = 0;
for( BSONObj::iterator i = bo.begin(); i.more() && idx < sizeof(sessionDataCodec) / sizeof(CodecPair<SessionData>); idx++) {
BSONElement e = i.next();
if(checkName){
if(strcmp(e.fieldName(), sessionDataCodec[idx].name) != 0){
myerrno = EDECFIELDMISS;
return -1;
}
}
int ret = sessionDataCodec[idx].codec->decode(info, e);
if(ret != 0){
myerrno = EDECBJSONERR;
return -1;
}
}
return 0;
}示例8: QUERY
/** Restore transforms from database.
* @param start_msec start time of range to restore since the epoch in msec
* @param end_msec end time of range to restore since the epoch in msec
* @param new_start_msec the new start time since the epoch in msec to which the
* transform times will be reset, i.e. from the transforms time stamp the
* @p start time is subtracted and @p new_start is added.
*/
void
MongoDBTransformer::restore(long long start_msec, long long end_msec, long long new_start_msec)
{
cache_time_ = (double)(end_msec - start_msec) / 1000.;
if (new_start_msec == 0) {
new_start_msec = start_msec;
}
std::list<std::string> collections =
mongodb_client_->getCollectionNames(database_);
std::auto_ptr<DBClientCursor> cursor;
BSONObj doc;
std::list<std::string>::iterator c;
for (c = collections.begin(); c != collections.end(); ++c) {
if ((c->find(database_ + ".TransformInterface.") != 0 ) &&
(c->find(database_ + ".tf") != 0) )
{
continue;
}
cursor = mongodb_client_->query(*c,
QUERY("timestamp" << GTE << start_msec << LT << end_msec).sort("timestamp"));
while (cursor->more()) {
doc = cursor->next();
if (doc.hasField("transforms")) {
// multi transforms document
BSONObj::iterator i = doc.getObjectField("transforms").begin();
while (i.more()) {
BSONElement e = i.next();
BSONObj o = e.Obj();
restore_tf_doc(o, start_msec, new_start_msec);
}
} else {
restore_tf_doc(doc, start_msec, new_start_msec);
}
}
}
}示例9: extractBSON
int MongoSchema::extractBSON(mongo::BSONObj bo, int& depth, std::string parent){
if(depth >= m_depth){
return 0;
}
depth++;
for( BSONObj::iterator i = bo.begin(); i.more(); ) {
BSONElement e = i.next();
if(skipField(e.fieldName())){
continue;
}
std::string fieldname = parent ;
fieldname.append(".");
fieldname.append(e.fieldName());
if(e.isSimpleType()){
hashmap::const_iterator keyexsit = m_map.find(fieldname);
SchemaModel* sm = new SchemaModel();
if(keyexsit != m_map.end()){
sm = &m_map[fieldname];
sm->count ++;
}else{
sm->count = 1;
sm->datatype = getType(e);
m_map[fieldname] = *sm;
}
}else if(e.isABSONObj()){
extractBSON(e.Obj(), depth, fieldname);
}
}
return 0;
}示例10: cmdElement
intrusive_ptr<Pipeline> Pipeline::parseCommand(
string &errmsg, BSONObj &cmdObj,
const intrusive_ptr<ExpressionContext> &pCtx) {
intrusive_ptr<Pipeline> pPipeline(new Pipeline(pCtx));
vector<BSONElement> pipeline;
/* gather the specification for the aggregation */
for(BSONObj::iterator cmdIterator = cmdObj.begin();
cmdIterator.more(); ) {
BSONElement cmdElement(cmdIterator.next());
const char *pFieldName = cmdElement.fieldName();
// ignore top-level fields prefixed with $. They are for the command processor, not us.
if (pFieldName[0] == '$') {
continue;
}
/* look for the aggregation command */
if (!strcmp(pFieldName, commandName)) {
pPipeline->collectionName = cmdElement.String();
continue;
}
/* check for the collection name */
if (!strcmp(pFieldName, pipelineName)) {
pipeline = cmdElement.Array();
continue;
}
/* check for explain option */
if (!strcmp(pFieldName, explainName)) {
pPipeline->explain = cmdElement.Bool();
continue;
}
/* if the request came from the router, we're in a shard */
if (!strcmp(pFieldName, fromRouterName)) {
pCtx->setInShard(cmdElement.Bool());
continue;
}
/* check for debug options */
if (!strcmp(pFieldName, splitMongodPipelineName)) {
pPipeline->splitMongodPipeline = true;
continue;
}
/* we didn't recognize a field in the command */
ostringstream sb;
sb <<
"unrecognized field \"" <<
cmdElement.fieldName();
errmsg = sb.str();
return intrusive_ptr<Pipeline>();
}
/*
If we get here, we've harvested the fields we expect for a pipeline.
Set up the specified document source pipeline.
*/
SourceContainer& sources = pPipeline->sources; // shorthand
/* iterate over the steps in the pipeline */
const size_t nSteps = pipeline.size();
for(size_t iStep = 0; iStep < nSteps; ++iStep) {
/* pull out the pipeline element as an object */
BSONElement pipeElement(pipeline[iStep]);
uassert(15942, str::stream() << "pipeline element " <<
iStep << " is not an object",
pipeElement.type() == Object);
BSONObj bsonObj(pipeElement.Obj());
// Parse a pipeline stage from 'bsonObj'.
uassert(16435, "A pipeline stage specification object must contain exactly one field.",
bsonObj.nFields() == 1);
BSONElement stageSpec = bsonObj.firstElement();
const char* stageName = stageSpec.fieldName();
// Create a DocumentSource pipeline stage from 'stageSpec'.
StageDesc key;
key.pName = stageName;
const StageDesc* pDesc = (const StageDesc*)
bsearch(&key, stageDesc, nStageDesc, sizeof(StageDesc),
stageDescCmp);
uassert(16436,
str::stream() << "Unrecognized pipeline stage name: '" << stageName << "'",
pDesc);
intrusive_ptr<DocumentSource> stage = (*pDesc->pFactory)(&stageSpec, pCtx);
verify(stage);
stage->setPipelineStep(iStep);
sources.push_back(stage);
}
/* if there aren't any pipeline stages, there's nothing more to do */
if (sources.empty())
return pPipeline;
/*
//.........这里部分代码省略.........
示例11: cmdElement
intrusive_ptr<Pipeline> Pipeline::parseCommand(
string &errmsg, BSONObj &cmdObj,
const intrusive_ptr<ExpressionContext> &pCtx) {
intrusive_ptr<Pipeline> pPipeline(new Pipeline(pCtx));
vector<BSONElement> pipeline;
/* gather the specification for the aggregation */
for(BSONObj::iterator cmdIterator = cmdObj.begin();
cmdIterator.more(); ) {
BSONElement cmdElement(cmdIterator.next());
const char *pFieldName = cmdElement.fieldName();
/* look for the aggregation command */
if (!strcmp(pFieldName, commandName)) {
pPipeline->collectionName = cmdElement.String();
continue;
}
/* check for the collection name */
if (!strcmp(pFieldName, pipelineName)) {
pipeline = cmdElement.Array();
continue;
}
/* check for explain option */
if (!strcmp(pFieldName, explainName)) {
pPipeline->explain = cmdElement.Bool();
continue;
}
/* if the request came from the router, we're in a shard */
if (!strcmp(pFieldName, fromRouterName)) {
pCtx->setInShard(cmdElement.Bool());
continue;
}
/* check for debug options */
if (!strcmp(pFieldName, splitMongodPipelineName)) {
pPipeline->splitMongodPipeline = true;
continue;
}
/* Ignore $auth information sent along with the command. The authentication system will
* use it, it's not a part of the pipeline.
*/
if (!strcmp(pFieldName, AuthenticationTable::fieldName.c_str())) {
continue;
}
/* we didn't recognize a field in the command */
ostringstream sb;
sb <<
"unrecognized field \"" <<
cmdElement.fieldName();
errmsg = sb.str();
return intrusive_ptr<Pipeline>();
}
/*
If we get here, we've harvested the fields we expect for a pipeline.
Set up the specified document source pipeline.
*/
SourceVector *pSourceVector = &pPipeline->sourceVector; // shorthand
/* iterate over the steps in the pipeline */
const size_t nSteps = pipeline.size();
for(size_t iStep = 0; iStep < nSteps; ++iStep) {
/* pull out the pipeline element as an object */
BSONElement pipeElement(pipeline[iStep]);
uassert(15942, str::stream() << "pipeline element " <<
iStep << " is not an object",
pipeElement.type() == Object);
BSONObj bsonObj(pipeElement.Obj());
// Parse a pipeline stage from 'bsonObj'.
uassert(16435, "A pipeline stage specification object must contain exactly one field.",
bsonObj.nFields() == 1);
BSONElement stageSpec = bsonObj.firstElement();
const char* stageName = stageSpec.fieldName();
// Create a DocumentSource pipeline stage from 'stageSpec'.
StageDesc key;
key.pName = stageName;
const StageDesc* pDesc = (const StageDesc*)
bsearch(&key, stageDesc, nStageDesc, sizeof(StageDesc),
stageDescCmp);
uassert(16436,
str::stream() << "Unrecognized pipeline stage name: '" << stageName << "'",
pDesc);
intrusive_ptr<DocumentSource> stage = (*pDesc->pFactory)(&stageSpec, pCtx);
verify(stage);
stage->setPipelineStep(iStep);
pSourceVector->push_back(stage);
}
/* if there aren't any pipeline stages, there's nothing more to do */
if (!pSourceVector->size())
return pPipeline;
//.........这里部分代码省略.........