external/storm-sqe/src/main/java/com/jwplayer/sqe/language/expression/FieldExpression.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 com.jwplayer.sqe.language.expression;

import java.util.List;

public class FieldExpression extends BaseExpression {
    public String fieldName;

    public FieldExpression(String fieldName) { this.fieldName = fieldName; }

    @Override
    public boolean equals(Object expression) {
        return (expression.getClass() == this.getClass()
                && this.fieldName.equals(((FieldExpression) expression).fieldName));
    }

    @Override
    public ExpressionType getExpressionType() {
        return ExpressionType.Field;
    }

    @Override
    public String getOutputFieldName() {
        return fieldName;
    }

    @Override
    public List<BaseExpression> unRoll() {
        return null;
    }
}