BackupCommand.java

/*
 * Copyright 2014-2015 the original author or authors
 *
 * 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.
 */
package com.wplatform.ddal.command.dml;

import com.wplatform.ddal.command.CommandInterface;
import com.wplatform.ddal.command.Prepared;
import com.wplatform.ddal.command.expression.Expression;
import com.wplatform.ddal.engine.Session;
import com.wplatform.ddal.message.DbException;
import com.wplatform.ddal.result.ResultInterface;

/**
 * This class represents the statement
 * BACKUP
 */
public class BackupCommand extends Prepared {

    private Expression fileNameExpr;

    public BackupCommand(Session session) {
        super(session);
    }

    /**
     * Fix the file name, replacing backslash with slash.
     *
     * @param f the file name
     * @return the corrected file name
     */
    public static String correctFileName(String f) {
        f = f.replace('\\', '/');
        if (f.startsWith("/")) {
            f = f.substring(1);
        }
        return f;
    }

    public void setFileName(Expression fileName) {
        this.fileNameExpr = fileName;
    }

    @Override
    public int update() {
        throw DbException.getUnsupportedException("TODO");
    }

    @Override
    public boolean isTransactional() {
        return true;
    }

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

    @Override
    public ResultInterface queryMeta() {
        return null;
    }

    @Override
    public int getType() {
        return CommandInterface.BACKUP;
    }

    public Expression getFileNameExpr() {
        return fileNameExpr;
    }

}