kdb Namespace Reference

This is the main namespace for the C++ binding and libraries. More...

Namespaces
namespace	tools
	This namespace is for the libtool library.

Data Structures
class	KDB
	Constructs a class KDB. More...
class	Context
	Provides a context for configuration. More...
class	ThreadSubject
	Subject from Observer pattern for ThreadContext. More...
struct	PerContext
	A data structure that is stored by context inside the Coordinator. More...
class	Coordinator
	Thread safe coordination of ThreadContext per Threads. More...
class	none_t
	This type is being used as bottom type that always fails. More...
class	Layer
	Base class for all layers. More...
class	ValueObserver
	Base class for values to be observed. More...
struct	Command
	Used by contexts for callbacks (to run code using a mutex). More...
class	DefaultGetPolicy
	Implements lookup with spec. More...
class	DefaultSetPolicy
	Implements creating user/ key when key is not found. More...
class	Discriminator
	This technique with the PolicySelector and Discriminator is taken from the book "C++ Templates - The Complete Guide" by David Vandevoorde and Nicolai M. More...
class	GetPolicyIs
	Needed by the user to set one of the policies. More...
class	SetPolicyIs
	Needed by the user to set one of the policies. More...
class	ContextPolicyIs
	Needed by the user to set one of the policies. More...
class	WritePolicyIs
	Needed by the user to set one of the policies. More...
class	ObserverPolicyIs
	Needed by the user to set one of the policies. More...
class	LockPolicyIs
	Needed by the user to set one of the policies. More...
class	Key
	Key is an essential class that encapsulates key name , value and metainfo . More...
class	NameIterator
	For C++ forward Iteration over Names. More...
class	NameReverseIterator
	For C++ reverse Iteration over Names. More...
struct	Va
	Needed to avoid constructor ambiguity. More...
class	KeySet
	A keyset holds together a set of keys. More...
class	KeySetIterator
	For C++ forward Iteration over KeySets. More...
class	KeySetReverseIterator
	For C++ reverse Iteration over KeySets. More...

Typedefs
typedef std::unordered_map < std::string, LayerAction >	LayerMap
	A vector of layers.

Functions
bool	operator< (ValueObserver const &lhs, ValueObserver const &rhs)
	Needed to put a ValueObserver in a map.
std::ostream &	operator<< (std::ostream &os, kdb::Key const &k)
	Stream the name of a key.
std::istream &	operator>> (std::istream &is, kdb::Key &k)
	Reads a line with a keys name.
std::ostream &	operator<< (std::ostream &os, kdb::KeySet const &cks)
	Outputs line per line the keynames.
std::istream &	operator>> (std::istream &is, kdb::KeySet &ks)
	Reads line per line key names and appends those keys to ks.

Detailed Description

This is the main namespace for the C++ binding and libraries.

Classes or Functions directly below this namespace are header-only. Sub namespaces are intended for libraries and you need to link the library if you want to use them.

• See Also

  kdb::tools

Function Documentation

bool kdb::operator<	(	ValueObserver const &	lhs,
		ValueObserver const &	rhs
	)

Needed to put a ValueObserver in a map.

Returns

Comparision result

std::ostream& kdb::operator<< ( std::ostream &  os, kdb::Key const &  k  )

inline

Stream the name of a key.

If you also want to stream the value, use the plugin framework.

Parameters

os	the stream to write to
k	the key which name should be streamed

Returns

the stream

std::ostream& kdb::operator<< ( std::ostream &  os, kdb::KeySet const &  cks  )

inline

Outputs line per line the keynames.

To output values you should use the plugin framework.

Parameters

os	the stream to write to
cks	the keyset which should be streamed

Use unsetf(std::ios_base::skipws) or use noskipws iomanip on the stream if you want a null terminated sequence of key names.

Use setf(std::ios_base::unitbuf) on the stream if you want to flush the buffer after each key.

Returns

the stream

std::istream& kdb::operator>> ( std::istream &  is, kdb::Key &  k  )

inline

Reads a line with a keys name.

Parameters

is	the stream to read from
k	the key whose name will be set

Use unsetf(std::ios_base::skipws) on the stream if the keyname is terminated with an null character and not a newline.

Returns

the stream

std::istream& kdb::operator>> ( std::istream &  is, kdb::KeySet &  ks  )

inline

Reads line per line key names and appends those keys to ks.

To input values you need to use the plugin framework.

Parameters

is	the stream to read from
ks	the keyset to append to

Returns

the stream