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Qore Mapper Module Reference 1.6.2
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provides a hash iterator based on a mapper object and an iterator input source More...
Public Member Functions | |
| constructor (Qore::AbstractIterator i, hash< auto > mapv, *hash< auto > opts) | |
| creates the iterator from the arguments passed | |
| constructor (Qore::AbstractIterator i, Mapper::Mapper mapv) | |
| creates the iterator from the arguments passed | |
| int | getCount () |
| returns the internal record count | |
| hash< auto > | getValue () |
| returns the current row transformed with the mapper | |
| resetCount () | |
| resets the internal record count | |
Public Member Functions inherited from Mapper::AbstractMapperIterator | |
| constructor (Qore::AbstractIterator iter) | |
| creates the iterator from the arguments passed | |
| bool | hasBulk () |
| returns True if the iterator supports bulk mode; this method returns False (the default) | |
| list< hash > | mapBulk (int size) |
| performs bulk mapping; if the iterator does not support bulk mapping then it is simulated in this method | |
| bool | next () |
| Moves the current position of the iterator to the next element; returns False if there are no more elements. | |
| bool | valid () |
| returns True if the iterator is currently pointing at a valid element, False if not | |
Protected Attributes | |
| Mapper::Mapper | mapc |
| data mapper | |
Protected Attributes inherited from Mapper::AbstractMapperIterator | |
| Qore::AbstractIterator | i |
| input iterator; AbstractIterator::getValue() must return a hash | |
provides a hash iterator based on a mapper object and an iterator input source
| Mapper::MapperIterator::constructor | ( | Qore::AbstractIterator | i, |
| hash< auto > | mapv, | ||
| *hash< auto > | opts ) |
creates the iterator from the arguments passed
| i | input iterator; AbstractIterator::getValue() must return a hash |
| mapv | a hash providing field mappings; each hash key is the name of the output field; each value is either True (meaning no translations are done; the data is copied 1:1) or a hash describing the mapping; see Mapper Specification Format for detailed documnentation for this option |
| opts | an optional hash of options for the mapper; see Mapper Options for a description of valid mapper options |
| MAP-ERROR | the map hash has a logical error (ex: "trunc" key given without "maxlen", invalid map key) |
| Mapper::MapperIterator::constructor | ( | Qore::AbstractIterator | i, |
| Mapper::Mapper | mapv ) |
creates the iterator from the arguments passed
| i | input iterator; AbstractIterator::getValue() must return a hash |
| mapv | the mapper to transform the data |
| int Mapper::MapperIterator::getCount | ( | ) |
returns the internal record count
| Mapper::MapperIterator::resetCount | ( | ) |
resets the internal record count