本文整理汇总了C++中IndexDescriptor::getOnDisk方法的典型用法代码示例。如果您正苦于以下问题：C++ IndexDescriptor::getOnDisk方法的具体用法？C++ IndexDescriptor::getOnDisk怎么用？C++ IndexDescriptor::getOnDisk使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类IndexDescriptor的用法示例。
在下文中一共展示了IndexDescriptor::getOnDisk方法的1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: run
void run() {
IndexDescriptor* id = addIndexWithInfo();
// Create a SortPhaseOne.
SortPhaseOne phaseOne;
phaseOne.sorter.reset( new BSONObjExternalSorter(_aFirstSort));
// Add index keys to the phaseOne.
int32_t nKeys = 130;
for( int32_t i = 0; i < nKeys; ++i ) {
phaseOne.sorter->add( BSON( "a" << i ), /* dummy disk loc */ DiskLoc(), false );
}
phaseOne.nkeys = phaseOne.n = nKeys;
phaseOne.sorter->sort( false );
// Set up remaining arguments.
set<DiskLoc> dups;
CurOp* op = cc().curop();
ProgressMeterHolder pm (op->setMessage("BuildBottomUp",
"BuildBottomUp Progress",
nKeys,
nKeys));
pm.finished();
Timer timer;
// The index's root has not yet been set.
ASSERT( id->getHead().isNull() );
// Finish building the index.
buildBottomUpPhases2And3<V1>( true,
id,
*phaseOne.sorter,
false,
dups,
op,
&phaseOne,
pm,
timer,
true );
// The index's root is set after the build is complete.
ASSERT( !id->getHead().isNull() );
// Create a cursor over the index.
scoped_ptr<BtreeCursor> cursor(
BtreeCursor::make( nsdetails( _ns ),
id->getOnDisk(),
BSON( "" << -1 ), // startKey below minimum key.
BSON( "" << nKeys ), // endKey above maximum key.
true, // endKeyInclusive true.
1 // direction forward.
) );
// Check that the keys in the index are the expected ones.
int32_t expectedKey = 0;
for( ; cursor->ok(); cursor->advance(), ++expectedKey ) {
ASSERT_EQUALS( expectedKey, cursor->currKey().firstElement().number() );
}
ASSERT_EQUALS( nKeys, expectedKey );
}