1package io.protobase.f7.formulas.logic;
 2
 3import io.protobase.f7.errors.F7Exception;
 4import io.protobase.f7.formulas.AbstractFormula;
 5import io.protobase.f7.formulas.FormulaName;
 6import io.protobase.f7.models.GridColumnRowKey;
 7import io.protobase.f7.utils.Converters;
 8
 9import java.util.function.BiFunction;
10import java.util.function.Function;
11
12public class NE extends AbstractFormula {
13  public static FormulaName NAME = FormulaName.NE;
14  public static NE SELF = new NE();
15
16  public NE() {
17    super();
18  }
19
20  public NE(Function<Object, Object> lookup, BiFunction<GridColumnRowKey, Object, Object> collateralLookup) {
21    super(lookup, collateralLookup);
22  }
23
24  @Override
25  public Object internal(GridColumnRowKey origin, Object... values) {
26    checkLength(values.length, 2, NAME);
27    // Just use logic from EQ to see if they're equal, and invert.
28    Object equal = new EQ(lookup, collateralLookup).apply(origin, values);
29    if (equal instanceof F7Exception) {
30      return equal;
31    }
32    return !Converters.toBoolean(equal);
33  }
34}