/**
 * 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.huawei.streaming.cql.semanticanalyzer.analyzecontext;

import java.util.ArrayList;
import java.util.List;

import com.google.common.base.Joiner;
import com.huawei.streaming.cql.semanticanalyzer.analyzecontext.expressiondesc.ExpressionDescribe;

/**
 * 通用表达式解析内容
 * 
 */
public abstract class ExpressionsAnalyzeContext extends AnalyzeContext
{
    private List<ExpressionDescribe> expdes = new ArrayList<ExpressionDescribe>();
    
    public List<ExpressionDescribe> getExpdes()
    {
        return expdes;
    }
    
    public void setExpdes(List<ExpressionDescribe> expdes)
    {
        this.expdes = expdes;
    }
    
    /**
     * 添加表达式
     */
    public void addExpressionDesc(ExpressionDescribe expression)
    {
        expdes.add(expression);
    }
    
    /**
     * {@inheritDoc}
     */
    @Override
    public String toString()
    {
        return Joiner.on(", ").join(expdes);
    }
    
}