1 files changed, 55 insertions, 0 deletions
diff --git a/src/com/iciql/bytecode/Not.java b/src/com/iciql/bytecode/Not.java
new file mode 100644
index 0000000..ab5ab84
--- /dev/null
+++ b/src/com/iciql/bytecode/Not.java
@@ -0,0 +1,55 @@
+/*
+ * 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(")");
+	}
+
+}