/*
 * Copyright 2016-2018 shardingsphere.io.
 * <p>
 * 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.
 * </p>
 */

package io.shardingsphere.core.parsing.antlr.extractor.statement.handler.result;

import java.util.LinkedHashSet;
import java.util.Set;

import io.shardingsphere.core.parsing.antlr.sql.ddl.AlterTableStatement;
import io.shardingsphere.core.parsing.parser.sql.SQLStatement;
import lombok.Getter;
import lombok.Setter;

/**
 * Drop column result.
 *
 * @author duhongjun
 */
@Getter
@Setter
public class DropColumnExtractResult implements ExtractResult {

    private Set<String> dropColumnNames = new LinkedHashSet<>();

    /**
     * Inject drop column name to SQLStatement.
     * @param statement SQL statement
     */
    @Override
    public void inject(final SQLStatement statement) {
        AlterTableStatement alterStatement = (AlterTableStatement) statement;
        for (String each : dropColumnNames) {
            alterStatement.getDropColumns().add(each);
        }
    }
}

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