package uk.org.aspellclark.bibliotheca.model;
public final class BooleanOperator {
public static final BooleanOperator AND = new BooleanOperator();
public static final BooleanOperator OR = new BooleanOperator();
public static final BooleanOperator ANDNOT = new BooleanOperator();
public static final BooleanOperator ORNOT = new BooleanOperator();
private BooleanOperator() {
}
@Override
public String toString() {
if (this == AND) {
return "And";
}
if (this == ANDNOT) {
return "AndNot";
}
if (this == ORNOT) {
return "OrNot";
}
if (this == OR) {
return "Or";
}
return "Unknown";
}
}
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