How to achieve the project data classification in web report

How to achieve the project data classification in web report

HI,GUYS:

Data and Logical following:

DIM(dimnesion):

[dimA] [dimB] [dimC] [Class]

A1 B1 C1

A1 B2 C2

A1 B1 C1

A1 B1 C1

just [dimB] one data =B2 then The same [dimA] data of [class]="X1"

[dimA] [dimB] [dimC] [Class]

A2 B2 C2

A2 B2 C1

A2 B3 C1

A2 B2 C2

just [dimB] one data =B3 then The same [dimA] data of [class]="X1"="X2"

[dimA] [dimB] [dimC] [Class]

A3 B1 C1

A3 B4 C1

A3 B5 C2

A3 B1 C1

just [dimB] data<>B2 AND B3 The same [dimA] data of [class]="X3"

SO,dimnesion [Class] Formula is ?

Thank you,

wang