Iterator Design Pattern concerns

[jojusuar]

anserini/src/main/java/io/anserini/collection/FileSegment.java

Line 113 in cfc1c99

return new Iterator<>(){

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Line referenced above declares an anonymous class to instantiate an Iterator object. However, this could be redesigned taking into account the Iterator Pattern, as follows:

In consequence, the FileSegment class (and other possible classes in the Collection package) will be relieved from the responsibility of declaring the logic of the iterators they use, in addition to enabling shared use of iterators among several classes.