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MapKInspections

Testing and benchmarking for ProjectMapK deliverables.

Benchmarking

This benchmark is a simple one for data class with 5 fields and 20 fields.

KMapper

A comparison of KMapper, BoundKMapper, some other mapping libraries, and manual mapping.
See also java-object-mapper-benchmark for a comparison with other mapping libraries.

Results

Benchmark                                                  Mode  Cnt         Score          Error  Units
c.m.kmapper.FiveArgsBenchmark.boundKMapper                thrpt    4   1881569.917 ±   167687.395  ops/s
c.m.kmapper.FiveArgsBenchmark.kMapper                     thrpt    4    918028.639 ±    70749.740  ops/s
c.m.kmapper.FiveArgsBenchmark.manual                      thrpt    4  51043446.918 ±  1701820.524  ops/s
c.m.kmapper.FiveArgsBenchmark.mapStruct                   thrpt    4  43095032.184 ±  1673529.682  ops/s
c.m.kmapper.FiveArgsBenchmark.mapStructConstructor        thrpt    4  41170101.739 ± 10857918.052  ops/s
c.m.kmapper.FiveArgsBenchmark.modelMapper                 thrpt    4    152843.152 ±    24307.984  ops/s
c.m.kmapper.FiveArgsBenchmark.orika                       thrpt    4   3631909.739 ±    99847.838  ops/s
c.m.kmapper.TwentyArgsBenchmark.boundKMapper              thrpt    4    529947.475 ±    20656.669  ops/s
c.m.kmapper.TwentyArgsBenchmark.kMapper                   thrpt    4    226232.207 ±    22438.183  ops/s
c.m.kmapper.TwentyArgsBenchmark.manual                    thrpt    4  21821032.043 ±   458163.893  ops/s
c.m.kmapper.TwentyArgsBenchmark.mapStruct                 thrpt    4  22312415.193 ±   477644.647  ops/s
c.m.kmapper.TwentyArgsBenchmark.mapStructConstructor      thrpt    4  18087503.877 ±  1605482.475  ops/s
c.m.kmapper.TwentyArgsBenchmark.modelMapper               thrpt    4     40300.300 ±     5979.843  ops/s
c.m.kmapper.TwentyArgsBenchmark.orika                     thrpt    4   3151262.014 ±   221691.985  ops/s

About comparison targets

The following three libraries were used for comparison.

MapStruct

Since 1.4.0.Final supports constructor calls, which can be used in Kotlin's data class, it is used for comparison.

Orika

In the benchmark based on java-object-mapper-benchmark, it was faster than KMapper and BoundKMapper, it is used for comparison.

ModelMapper

This is the library that led to the creation of KMapper, it is used for comparison.

KRowMapper

A comparison of KRowMapper, BeanPropertyRowMapper, and manual mapping.

Results

c.m.krowmapper.FiveArgsBenchmark.beanPropertyRowMapper    thrpt    4    112537.259 ±     5462.588  ops/s
c.m.krowmapper.FiveArgsBenchmark.kRowMapper               thrpt    4   1222436.555 ±   157389.056  ops/s
c.m.krowmapper.FiveArgsBenchmark.manual                   thrpt    4   3273297.552 ±   638106.756  ops/s
c.m.krowmapper.TwentyArgsBenchmark.beanPropertyRowMapper  thrpt    4     15399.234 ±     1162.254  ops/s
c.m.krowmapper.TwentyArgsBenchmark.kRowMapper             thrpt    4    335197.138 ±    19255.629  ops/s
c.m.krowmapper.TwentyArgsBenchmark.manual                 thrpt    4    760402.555 ±    15925.221  ops/s