#include <PagedArrIter.h>
Protected Member Functions | |
| PagedArrIter (const PagedArray< T > &data, const LatticeNavigator &method, Bool useRef) | |
| Construct the Iterator with the supplied data, and iteration strategy. More... | |
| PagedArrIter (const PagedArrIter< T > &other) | |
| The copy constructor uses reference sematics for the PagedArray and copy semantics for the cursor and Navigator. More... | |
| virtual | ~PagedArrIter () |
| Destructor (cleans up dangling references and releases cursor memory) More... | |
| PagedArrIter< T > & | operator= (const PagedArrIter< T > &other) |
| The assignment operator uses reference sematics for the PagedArray and copy semantics for the cursor and Navigator. More... | |
| virtual LatticeIterInterface< T > * | clone () const |
| Clone the object. More... | |
 Protected Member Functions inherited from casacore::LatticeIterInterface< T > | |
| LatticeIterInterface () | |
| Default constructor (for derived classes). More... | |
| LatticeIterInterface (const LatticeIterInterface< T > &other) | |
| Copy constructor (copy semantics). More... | |
| LatticeIterInterface & | operator= (const LatticeIterInterface< T > &other) |
| Assignment (copy semantics). More... | |
| Lattice< T > & | lattice () |
| Return the underlying lattice. More... | |
| Bool | operator++ () |
| Increment operator - increment the cursor to the next position. More... | |
| Bool | operator++ (int) |
| Bool | operator-- () |
| Decrement operator - decrement the cursor to the previous position. More... | |
| Bool | operator-- (int) |
| void | reset () |
| Function which resets the cursor to the beginning of the Lattice and resets the number of steps taken to zero. More... | |
| Bool | atStart () const |
| Function which returns a value of "True" if the cursor is at the beginning of the Lattice, otherwise, returns "False". More... | |
| Bool | atEnd () const |
| Function which returns "True" if the cursor has been incremented to the end of the lattice, otherwise, returns "False". More... | |
| uInt | nsteps () const |
| Function to return the number of steps (increments or decrements) taken since construction (or since last reset). More... | |
| IPosition | position () const |
| Function which returns the current position of the beginning of the cursor within the Lattice. More... | |
| IPosition | endPosition () const |
| Function which returns the current position of the end of the cursor. More... | |
| IPosition | latticeShape () const |
| Function which returns the shape of the Lattice being iterated through. More... | |
| IPosition | cursorShape () const |
| Function which returns the shape of the cursor which is iterating through the Lattice. More... | |
| virtual Vector< T > & | vectorCursor (Bool doRead, Bool autoRewrite) |
| Functions which returns a window to the data in the Lattice. More... | |
| virtual Matrix< T > & | matrixCursor (Bool doRead, Bool autoRewrite) |
| virtual Cube< T > & | cubeCursor (Bool doRead, Bool autoRewrite) |
| virtual Array< T > & | cursor (Bool doRead, Bool autoRewrite) |
| Bool | ok () const |
| Function which checks the internals of the class for consistency. More... | |
| virtual void | readData (Bool doRead) |
| Do the actual read of the data. More... | |
| virtual void | rewriteData () |
| Rewrite the cursor data and clear the rewrite flag. More... | |
| virtual void | cursorUpdate () |
| Update the cursor for the next chunk of data (resize if needed). More... | |
| void | allocateBuffer () |
| Allocate the internal buffer. More... | |
| void | allocateCurPtr () |
| Allocate the nondegenerate array with the correct type. More... | |
| void | setCurPtr2Cursor () |
| Synchronise the storage of itsCurPtr with itsCursor. More... | |
| void | copyBase (const LatticeIterInterface< T > &other) |
| Copy the base data of the other object. More... | |
Private Member Functions | |
| void | setupTileCache () |
| Setup the cache in the tiled storage manager. More... | |
Private Attributes | |
| PagedArray< T > | itsData |
| reference to the PagedArray More... | |
Friends | |
| class | PagedArray< T > |
Additional Inherited Members | |
| Public Member Functions inherited from casacore::LatticeIterInterface< T > | |
| LatticeIterInterface (const Lattice< T > &lattice, const LatticeNavigator &navigator, Bool useRef) | |
| Construct with the given navigator. More... | |
| virtual | ~LatticeIterInterface () |
| A virtual destructor. More... | |
| Protected Attributes inherited from casacore::LatticeIterInterface< T > | |
| LatticeNavigator * | itsNavPtr |
| Pointer to the method of Lattice transversal. More... | |
| Lattice< T > * | itsLattPtr |
| Pointer to the Lattice. More... | |
| Array< T > | itsBuffer |
| A buffer to hold the data. More... | |
| Array< T > * | itsCurPtr |
| Polymorphic pointer to the data in itsCursor. More... | |
| Array< T > | itsCursor |
| An Array which references the same data as the itsCurPtr, but has all the degenerate axes. More... | |
| Bool | itsUseRef |
| Keep a reference to the data (if possible). More... | |
| Bool | itsIsRef |
| Is the cursor a reference to the lattice? More... | |
| Bool | itsHaveRead |
| Have the data been read after a cursor update? (False=not read) More... | |
| Bool | itsRewrite |
| Rewrite the cursor data before moving or destructing? More... | |
| IPosition | itsCursorAxes |
| The axes forming the cursor. More... | |
Detailed Description
template<class T>
class casacore::PagedArrIter< T >
A read/write Lattice iterator for PagedArrays.
Intended use:
Internal
Review Status
- Reviewed By:
- Peter Barnes
- Date Reviewed:
- 1999/10/30
- Test programs:
- tLatticeIterator
- Demo programs:
- dPagedArray
Prerequisite
- PagedArray
- LatticeIterator
- LatticeIterInterface
- letter/envelope schemes, eg. Coplien, "Advanced C++", ch 5.5
Etymology
The PagedArrIter class name is a contraction of Paged Array Iterator and reflects its role as the methods for iterating through Lattices which are resident on disk.
Synopsis
This class is not meant for general use. Instead class LatticeIterator should be used to iterate through a PagedArray or any other Lattice object (like a ArrayLattice).
PagedArrIter is derived from LatticeIterInterface and implements the iterator for a PagedArray object. This iterator is somewhat special because it sets the PagedArray cache size at the start of an iteration.
Motivation
For for each derivation of Lattice to make as efficient an iterator as possible. The letter/envelope scheme allowed us to hide the special bits in classes like the one you see here.
Template Type Argument Requirements (T)
- Restricted to the type of the PagedArray argument in the constructors
Definition at line 92 of file PagedArrIter.h.
Constructor & Destructor Documentation
◆ PagedArrIter() [1/2]
|
protected |
Construct the Iterator with the supplied data, and iteration strategy.
◆ PagedArrIter() [2/2]
|
protected |
The copy constructor uses reference sematics for the PagedArray and copy semantics for the cursor and Navigator.
This way the newly constructed PagedArrIter can independently iterate through the same data set. (with the same cursor shape etc.)
◆ ~PagedArrIter()
|
protectedvirtual |
Destructor (cleans up dangling references and releases cursor memory)
Member Function Documentation
◆ clone()
|
protectedvirtual |
Clone the object.
Reimplemented from casacore::LatticeIterInterface< T >.
◆ operator=()
|
protected |
The assignment operator uses reference sematics for the PagedArray and copy semantics for the cursor and Navigator.
This way the PagedArrIter objects share the same data set but independently iterate with cursors of the same size.
◆ setupTileCache()
|
private |
Setup the cache in the tiled storage manager.
Friends And Related Function Documentation
◆ PagedArray< T >
|
friend |
Definition at line 1 of file PagedArrIter.h.
Member Data Documentation
◆ itsData
|
private |
reference to the PagedArray
Definition at line 130 of file PagedArrIter.h.
The documentation for this class was generated from the following file:
- lattices/Lattices/PagedArrIter.h
