src-main.org.awakefw.sql.jdbc.util.ColPositionBuilder Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of awake-sql Show documentation
Awake SQL is an open source framework that allows remote and secure JDBC access through HTTP.
The newest version!
/*
 * This file is part of Awake SQL. 
 * Awake SQL: Remote JDBC access over HTTP.                                    
 * Copyright (C) 2013,  KawanSoft SAS
 * (http://www.kawansoft.com). All rights reserved.                    
 *                                                                         
 * Awake SQL is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.         
 *              
 * Awake SQL is distributed in the hope that it will be useful,               
 * but WITHOUT ANY WARRANTY; without even the implied warranty of                
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU          
 * Lesser General Public License for more details.       
 *                                  
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, see .
 *
 * If you develop commercial activities using Awake SQL, you must: 
 * a) disclose and distribute all source code of your own product,
 * b) license your own product under the GNU General Public License.
 * 
 * You can be released from the requirements of the license by
 * purchasing a commercial license. Buying such a license will allow you 
 * to ship Awake SQL with your closed source products without disclosing 
 * the source code.
 *
 * For more information, please contact KawanSoft SAS at this
 * address: [email protected]
 * 
 * Any modifications to this file must keep this entire header
 * intact.
 */
package org.awakefw.sql.jdbc.util;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.io.LineNumberReader;
import java.sql.SQLException;
import java.util.Map;

import org.apache.commons.io.FileUtils;
import org.apache.commons.io.IOUtils;
import org.awakefw.file.api.util.AwakeDebug;
import org.awakefw.file.util.AwakeClientLogger;
import org.awakefw.file.util.Tag;
import org.awakefw.sql.jdbc.ConnectionHttp;
import org.awakefw.sql.json.JsonColPosition;

/**
 * @author Nicolas de Pomereu
 * 
 *         Creator of the Map of the (column names, column
 *         positions).
 */
public class ColPositionBuilder {

    /** Debug flag */
    private static boolean DEBUG = AwakeDebug.isSet(ColPositionBuilder.class);
    
    /** the Mapof the column (names, positions) */
    private Map columnsPosition = null;
    
    /**
     * 
     * Constructor
     * 
     * @param file
     *            the file that contains the positions of the columns
     * @param connectionHttp TODO
     */
    public ColPositionBuilder(File file, ConnectionHttp connectionHttp) throws SQLException {
	if (!file.exists()) {
	    String message = Tag.AWAKE_PRODUCT_FAIL + "Internal File does not exists: "
		    + file;
	    throw new SQLException(message, new IOException(message));
	}

	String line = null;
	LineNumberReader lineNumberReader = null;

	try {
	    lineNumberReader = new LineNumberReader(new FileReader(file));
	    line = lineNumberReader.readLine();
	} catch (FileNotFoundException e) {
	    String message = Tag.AWAKE_PRODUCT_FAIL + "Internal File does not exists: "
		    + file;
	    throw new SQLException(message, new IOException(message));
	} catch (IOException e) {
	    String message = Tag.AWAKE_PRODUCT_FAIL + "I/O Error when reading file: "
		    + file;
	    throw new SQLException(message, new IOException(message));
	} finally {
	    IOUtils.closeQuietly(lineNumberReader);
	}

	if (line == null) {
	    String message = Tag.AWAKE_PRODUCT_FAIL + "Internal File is empty: " + file;
	    throw new SQLException(message, new IOException(message));
	}

	line = JsonLineDecryptor.decrypt(line, connectionHttp);	
	
	if (DEBUG) {
	    try {
		String fileContent = FileUtils.readFileToString(file);
		debug("fileContent: " + fileContent);
	    } catch (IOException e) {
		throw new SQLException(e);
	    }
	}
	
	columnsPosition = JsonColPosition.fromJson(line);
    }

    /**
     * @return the columnsPosition map
     */
    public Map getColPosition() {
	return this.columnsPosition;
    }
    
    /**
     * Displays the given message if DEBUG is set.
     * 
     * @param s
     *            the debug message
     */

    private void debug(String s) {
	if (DEBUG) {
	    AwakeClientLogger.log(s);
	}
    }    

}