diff options
Diffstat (limited to 'db/cursor.h')
| -rw-r--r-- | db/cursor.h | 28 |
1 files changed, 14 insertions, 14 deletions
diff --git a/db/cursor.h b/db/cursor.h index 1b0d402c2d2..9797d668dbc 100644 --- a/db/cursor.h +++ b/db/cursor.h @@ -23,7 +23,7 @@ #include "matcher.h" namespace mongo { - + class NamespaceDetails; class Record; class CoveredIndexMatcher; @@ -31,7 +31,7 @@ namespace mongo { /* Query cursors, base class. This is for our internal cursors. "ClientCursor" is a separate concept and is for the user's cursor. - WARNING concurrency: the vfunctions below are called back from within a + WARNING concurrency: the vfunctions below are called back from within a ClientCursor::ccmutex. Don't cause a deadlock, you've been warned. */ class Cursor : boost::noncopyable { @@ -50,7 +50,7 @@ namespace mongo { virtual DiskLoc refLoc() = 0; /* Implement these if you want the cursor to be "tailable" */ - + /* Request that the cursor starts tailing after advancing past last record. */ /* The implementation may or may not honor this request. */ virtual void setTailable() {} @@ -77,10 +77,10 @@ namespace mongo { /* called before query getmore block is iterated */ virtual void checkLocation() { } - + virtual bool supportGetMore() = 0; virtual bool supportYields() = 0; - + virtual string toString() { return "abstract?"; } /* used for multikey index traversal to avoid sending back dups. see Matcher::matches(). @@ -88,17 +88,17 @@ namespace mongo { if loc has already been sent, returns true. otherwise, marks loc as sent. @param deep - match was against an array, so we know it is multikey. this is legacy and kept - for backwards datafile compatibility. 'deep' can be eliminated next time we + for backwards datafile compatibility. 'deep' can be eliminated next time we force a data file conversion. 7Jul09 */ virtual bool getsetdup(DiskLoc loc) = 0; - + virtual bool isMultiKey() const = 0; /** * return true if the keys in the index have been modified from the main doc - * if you have { a : 1 , b : [ 1 , 2 ] } - * an index on { a : 1 } would not be modified + * if you have { a : 1 , b : [ 1 , 2 ] } + * an index on { a : 1 } would not be modified * an index on { b : 1 } would be since the values of the array are put in the index * not the array */ @@ -109,12 +109,12 @@ namespace mongo { virtual bool capped() const { return false; } virtual long long nscanned() = 0; - + // The implementation may return different matchers depending on the // position of the cursor. If matcher() is nonzero at the start, // matcher() should be checked each time advance() is called. virtual CoveredIndexMatcher *matcher() const { return 0; } - + // A convenience function for setting the value of matcher() manually // so it may accessed later. Implementations which must generate // their own matcher() should assert here. @@ -154,7 +154,7 @@ namespace mongo { return j; } virtual DiskLoc currLoc() { return curr; } - virtual DiskLoc refLoc() { return curr.isNull() ? last : curr; } + virtual DiskLoc refLoc() { return curr.isNull() ? last : curr; } bool advance(); virtual string toString() { return "BasicCursor"; } virtual void setTailable() { @@ -167,9 +167,9 @@ namespace mongo { virtual bool modifiedKeys() const { return false; } virtual bool supportGetMore() { return true; } virtual bool supportYields() { return true; } - virtual CoveredIndexMatcher *matcher() const { return _matcher.get(); } + virtual CoveredIndexMatcher *matcher() const { return _matcher.get(); } virtual void setMatcher( shared_ptr< CoveredIndexMatcher > matcher ) { _matcher = matcher; } - virtual long long nscanned() { return _nscanned; } + virtual long long nscanned() { return _nscanned; } protected: DiskLoc curr, last; |