Java – Mapping Lists of objects with Dozer

dozerjavamapping

I created a dozer mapping for ClassA to ClassB.

Now I want to map a List<ClassA> to a List<ClassB>.

Is it possible to just

mapper.map(variableListClassA, variableListClassB)

or do I have to go over a loop, e.g.

for (ClassA classA : variableListClassA) {
    variableListClassB.add(mapper.map(classA, ClassB.class))
}

Best Answer

You need to use the loop, because the type of the list is erased at runtime.

If both lists are a field of a class, you can map the owning classes.

Related Solutions

Python – Reverse / invert a dictionary mapping

Python 3+:

inv_map = {v: k for k, v in my_map.items()}

Python 2:

inv_map = {v: k for k, v in my_map.iteritems()}

The difference between the remap, noremap, nnoremap and vnoremap mapping commands in Vim

remap is an option that makes mappings work recursively. By default it is on and I'd recommend you leave it that way. The rest are mapping commands, described below:

:map and :noremap are recursive and non-recursive versions of the various mapping commands. For example, if we run:

:map j gg           (moves cursor to first line)
:map Q j            (moves cursor to first line)
:noremap W j        (moves cursor down one line)

Then:

j will be mapped to gg.
Q will also be mapped to gg, because j will be expanded for the recursive mapping.
W will be mapped to j (and not to gg) because j will not be expanded for the non-recursive mapping.

Now remember that Vim is a modal editor. It has a normal mode, visual mode and other modes.

For each of these sets of mappings, there is a mapping that works in normal, visual, select and operator modes (:map and :noremap), one that works in normal mode (:nmap and :nnoremap), one in visual mode (:vmap and :vnoremap) and so on.

For more guidance on this, see:

:help :map
:help :noremap
:help recursive_mapping
:help :map-modes

Best Answer

Related Solutions

Python – Reverse / invert a dictionary mapping

The difference between the remap, noremap, nnoremap and vnoremap mapping commands in Vim

Related Topic