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- /*
- * Copyright 2004-2011 H2 Group.
- * Copyright 2011 James Moger.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
- package com.iciql.bytecode;
-
- import com.iciql.Query;
- import com.iciql.SQLStatement;
- import com.iciql.Token;
-
- /**
- * A NOT condition.
- */
- public class Not implements Token {
-
- private 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;
- }
-
- public <T> void appendSQL(SQLStatement stat, Query<T> query) {
- // untested
- stat.appendSQL("NOT(");
- expr.appendSQL(stat, query);
- stat.appendSQL(")");
- }
-
- }
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