JarCastingmysql-diff 
Detect and extract diff between two table declarations from schema of MySQL.
Synopsis
Use as CLI application
Executable fat-jar is available at here.
$ java -jar [old_database] [new_database]
If you want more details, please run this command with --help option.
Programmatically
import net.moznion.mysql.diff.DiffExtractor;
import net.moznion.mysql.diff.MySqlConnectionInfo;
import net.moznion.mysql.diff.SchemaDumper;
import net.moznion.mysql.diff.SchemaParser;
MySqlConnectionInfo localMySqlConnectionInfo = MySqlConnectionInfo.builder()
// .host("your-host") // "localhost" is the default value
// .user("your-name") // "root" is the default value
// .pass("your-password") // "" is the default value
// .url("jdbc:mysql://your-host:3306?cacheServerConfiguration=true") // or you can specify host, port and properties by a URL
.build();
SchemaDumper schemaDumper = new SchemaDumper(localMySqlConnectionInfo);
final String oldSql = "CREATE TABLE `sample` (\n"
+ " `id` INTEGER(10) NOT NULL AUTO_INCREMENT,\n"
+ " PRIMARY KEY (`id`)\n"
+ ") ENGINE=InnoDB DEFAULT CHARSET=utf8;\n";
final String newSql = "CREATE TABLE `sample` (\n"
+ " `id` INTEGER(10) NOT NULL AUTO_INCREMENT,\n"
+ " `name` VARCHAR(32) NOT NULL,\n"
+ " PRIMARY KEY (`id`)\n"
+ ") ENGINE=InnoDB DEFAULT CHARSET=utf8;\n";
String oldSchema = schemaDumper.dump(oldSql);
String newSchema = schemaDumper.dump(newSql);
List<Table> oldTables = SchemaParser.parse(oldSchema);
List<Table> newTables = SchemaParser.parse(newSchema);
String diff = DiffExtractor.extractDiff(oldTables, newTables);
Description
This package provides a function to detect and extract diff between two table declarations from schema.
Extraction processing flow is following;
- Dump normalized schema by creating new database according to input and dump it out by using
mysqldump - Parse normalized schema
- Take diff between parsed structure
This package is port of onishi-san's mysqldiff from Perl to Java.
Dependencies
- Java 8 or later
- MySQL 5 or later (
mysqldmust be upped when this program is executed) - mysqldump
How to build fat-jar
If you want to build an executable standalone jar, please run following command;
$ mvn -P fatjar clean package
And now, generated runnable fat-jar file has been available on GitHub Releases.
See Also
Author
moznion ([email protected])
License
The MIT License (MIT)
Copyright © 2014 moznion, http://moznion.net/ <[email protected]>
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of this software and associated documentation files (the “Software”), to deal
in the Software without restriction, including without limitation the rights
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copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.