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JSqlParser parses an SQL statement and translate it into a hierarchy of Java classes. The generated hierarchy can be navigated using the Visitor Pattern.

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/*-
 * #%L
 * JSQLParser library
 * %%
 * Copyright (C) 2004 - 2019 JSQLParser
 * %%
 * Dual licensed under GNU LGPL 2.1 or Apache License 2.0
 * #L%
 */
package net.sf.jsqlparser.expression;

import net.sf.jsqlparser.parser.ASTNodeAccessImpl;

public class NullValue extends ASTNodeAccessImpl implements Expression {

    @Override
    public  T accept(ExpressionVisitor expressionVisitor, S context) {
        return expressionVisitor.visit(this, context);
    }

    @Override
    public String toString() {
        return "NULL";
    }
}