asterixdb/asterix-lang-aql/src/main/java/org/apache/asterix/lang/aql/expression/MetaVariableExpr.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 org.apache.asterix.lang.aql.expression;

import org.apache.asterix.common.exceptions.CompilationException;
import org.apache.asterix.lang.aql.visitor.base.IAQLPlusVisitor;
import org.apache.asterix.lang.common.expression.VariableExpr;
import org.apache.asterix.lang.common.struct.VarIdentifier;
import org.apache.asterix.lang.common.visitor.base.ILangVisitor;

public class MetaVariableExpr extends VariableExpr {

    public MetaVariableExpr(VarIdentifier var) {
        super(var);
    }

    @Override
    public <R, T> R accept(ILangVisitor<R, T> visitor, T arg) throws CompilationException {
        return ((IAQLPlusVisitor<R, T>) visitor).visitMetaVariableExpr(this, arg);
    }

    @Override
    public boolean getIsNewVar() {
        return false;
    }

    @Override
    public Kind getKind() {
        return Kind.METAVARIABLE_EXPRESSION;
    }
}