package Ġme . jiang ca i . common . jpa . eclipse link Ċ Ċ import Ġorg . eclipse . persistence . expressions . Expression Operator Ċ Ċ /** Ċ Ġ* Ġ@ author ĠC J Ċ Ġ*/ Ċ class ĠH 2 Platform Ġ: Ġorg . eclipse . persistence . platform . database . H 2 Platform () Ġ{ ĊĠĠĠ Ġoverride Ġfun Ġinitialize Platform Operators () Ġ{ ĊĠĠĠĠĠĠĠ Ġsuper . initialize Platform Operators () ĊĠĠĠĠĠĠĠ Ġadd Operator ( Expression Operator . date Difference ()) ĊĠĠĠ Ġ} Ċ }