/*
* Copyright 2004-2014 H2 Group. Multiple-Licensed under the MPL 2.0,
* and the EPL 1.0 (http://h2database.com/html/license.html).
* Initial Developer: H2 Group
*/
package org.h2.jaqu.bytecode;
import org.h2.jaqu.Query;
import org.h2.jaqu.SQLStatement;
import org.h2.jaqu.Token;
/**
* A NOT condition.
*/
public class Not implements Token {
private final Token expr;
private Not(Token expr) {
this.expr = expr;
}
static Token get(Token expr) {
if (expr instanceof Not) {
return ((Not) expr).expr;
} else if (expr instanceof Operation) {
return ((Operation) expr).reverse();
}
return new Not(expr);
}
Token not() {
return expr;
}
@Override
public <T> void appendSQL(SQLStatement stat, Query<T> query) {
// untested
stat.appendSQL("NOT(");
expr.appendSQL(stat, query);
stat.appendSQL(")");
}
}