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JLANG::JObjectMultiplexer< JDerived_t, JBase_t > Class Template Reference

Auxiliary class for multiplexing object iterators. More...

#include <JObjectIterator.hh>

Inheritance diagram for JLANG::JObjectMultiplexer< JDerived_t, JBase_t >:
JLANG::JObjectIterator< JBase_t >

Public Types

typedef JObjectIterator
< JDerived_t > 
iterator_type
 
typedef JObjectIterator
< JBase_t >::pointer_type 
pointer_type
 
typedef JSinglePointer
< JObjectMultiplexer
< JDerived_t, JBase_t > > 
multiplexer_type
 
typedef JValve< JDerived_t > valve_type
 

Public Member Functions

 JObjectMultiplexer (iterator_type &input, const valve_type &valve=valve_type())
 Constructor. More...
 
virtual bool hasNext () override
 Check availability of next element. More...
 
virtual const pointer_typenext () override
 Get next element. More...
 
virtual skip_type skip (const skip_type ns)
 Skip items. More...
 

Public Attributes

valve_type valve
 

Static Public Attributes

static multiplexer_type multiplexer
 Multiplexer. More...
 

Private Attributes

iterator_typein
 
pointer_type ps
 

Friends

void operator| (JObjectMultiplexer &in, JObjectOutput< JBase_t > &out)
 Pipe operator. More...
 

Detailed Description

template<class JDerived_t, class JBase_t>
class JLANG::JObjectMultiplexer< JDerived_t, JBase_t >

Auxiliary class for multiplexing object iterators.

The template argument JDerived_t refers to a list of multiple object iterators which are sequentially processed.
The template argument JBase_t refers to a single object iterator which provides for a common interface to the multiple object iterators.

This class implements the JLANG::JObjectIterator interface.

Definition at line 37 of file JObjectIterator.hh.

Member Typedef Documentation

template<class JDerived_t, class JBase_t>
typedef JObjectIterator<JDerived_t> JLANG::JObjectMultiplexer< JDerived_t, JBase_t >::iterator_type

Definition at line 38 of file JObjectMultiplexer.hh.

template<class JDerived_t, class JBase_t>
typedef JObjectIterator<JBase_t>::pointer_type JLANG::JObjectMultiplexer< JDerived_t, JBase_t >::pointer_type

Definition at line 39 of file JObjectMultiplexer.hh.

template<class JDerived_t, class JBase_t>
typedef JSinglePointer< JObjectMultiplexer<JDerived_t, JBase_t> > JLANG::JObjectMultiplexer< JDerived_t, JBase_t >::multiplexer_type

Definition at line 40 of file JObjectMultiplexer.hh.

template<class JDerived_t, class JBase_t>
typedef JValve<JDerived_t> JLANG::JObjectMultiplexer< JDerived_t, JBase_t >::valve_type

Definition at line 41 of file JObjectMultiplexer.hh.

Constructor & Destructor Documentation

template<class JDerived_t, class JBase_t>
JLANG::JObjectMultiplexer< JDerived_t, JBase_t >::JObjectMultiplexer ( iterator_type input,
const valve_type valve = valve_type() 
)
inline

Constructor.

Parameters
inputobject iterator
valvevalve

Definition at line 50 of file JObjectMultiplexer.hh.

51  :
52  valve(valve),
53  in(input)
54  {}

Member Function Documentation

template<class JDerived_t, class JBase_t>
virtual bool JLANG::JObjectMultiplexer< JDerived_t, JBase_t >::hasNext ( )
inlineoverridevirtual

Check availability of next element.

Returns
true if the valve is open and the iteration has more elements; else false

Implements JLANG::JObjectIterator< JBase_t >.

Reimplemented in JLANG::JObjectMultiplexer< JTypeList< JHead_t, JTail_t >, JBase_t >.

Definition at line 62 of file JObjectMultiplexer.hh.

63  {
64  if (valve.is_open())
65  return in.hasNext();
66  else
67  return false;
68  }
virtual bool hasNext()=0
Check availability of next element.
bool is_open() const
Check if valve is open.
Definition: JValve.hh:51
template<class JDerived_t, class JBase_t>
virtual const pointer_type& JLANG::JObjectMultiplexer< JDerived_t, JBase_t >::next ( )
inlineoverridevirtual

Get next element.

Returns
pointer to element

Implements JLANG::JObjectIterator< JBase_t >.

Reimplemented in JLANG::JObjectMultiplexer< JTypeList< JHead_t, JTail_t >, JBase_t >.

Definition at line 76 of file JObjectMultiplexer.hh.

77  {
78  ps.reset(in.next());
79 
80  return ps;
81  }
virtual const pointer_type & next()=0
Get next element.
virtual skip_type JLANG::JObjectIterator< JBase_t >::skip ( const skip_type  ns)
inlinevirtualinherited

Skip items.

Parameters
nsnumber of items to skip
Returns
number of items skipped

Definition at line 90 of file JObjectIterator.hh.

91  {
92  skip_type i = 0;
93 
94  for ( ; i != ns && hasNext(); ++i) {
95  next();
96  }
97 
98  return i;
99  }
unsigned int skip_type
Type definition for number of objects to skip.
virtual const pointer_type & next()=0
Get next element.
virtual bool hasNext()=0
Check availability of next element.

Friends And Related Function Documentation

template<class JDerived_t, class JBase_t>
void operator| ( JObjectMultiplexer< JDerived_t, JBase_t > &  in,
JObjectOutput< JBase_t > &  out 
)
friend

Pipe operator.

Parameters
inobject multiplexer
outobject output

Definition at line 90 of file JObjectMultiplexer.hh.

91  {
92  in >> out;
93  }

Member Data Documentation

template<class JDerived_t, class JBase_t>
valve_type JLANG::JObjectMultiplexer< JDerived_t, JBase_t >::valve

Definition at line 95 of file JObjectMultiplexer.hh.

template<class JDerived_t, class JBase_t>
JSinglePointer< JObjectMultiplexer< JDerived_t, JBase_t > > JLANG::JObjectMultiplexer< JDerived_t, JBase_t >::multiplexer
static

Multiplexer.

Definition at line 97 of file JObjectMultiplexer.hh.

template<class JDerived_t, class JBase_t>
iterator_type& JLANG::JObjectMultiplexer< JDerived_t, JBase_t >::in
private

Definition at line 100 of file JObjectMultiplexer.hh.

template<class JDerived_t, class JBase_t>
pointer_type JLANG::JObjectMultiplexer< JDerived_t, JBase_t >::ps
private

Definition at line 101 of file JObjectMultiplexer.hh.


The documentation for this class was generated from the following files: