ScalaMongoDiff

Compare two MongoDB collections, examining each document and field in detail, to create a third collection that records the differences.

App versions

• Scala 2.13
• JDK 19
• MongoDB 5.0.13

Execution parameters

1. Navigate to the 'bin' directory and run the 'run_process.sh' script, providing the required parameters and, if necessary, the optional ones, example:

    ...\bin>./run_process.sh -database_from1=dbname1 -collection_from1=colname1 -collection_from2=colname2 -collection_out=colnameout -idField=idname
   

   Parameters:

     -database_from1=<name>           - Name of the MongoDB database
     -collection_from1=<name>         - Name of the collection in the database
     -collection_from2=<name>         - Name of the collection in the database
     -collection_out=<name>           - Name of the collection in the database
     -idField=<name>                  - Document identifier field
     [-database_from2=<name>]         - MongoDB database name, by default, will be the database_from1
     [-database_out=<name>]           - MongoDB database name, by default, will be the database_from1
     [-host_from1=<name>]             - MongoDB server name. Default is 'localhost'
     [-port_from1=<number>]           - MongoDB server port number. Default is 27017
     [-host_from2=<name>]             - MongoDB server name. Default is 'localhost'
     [-port_from2=<number>]           - MongoDB server port number. Default is 27017
     [-host_out=<name>]               - MongoDB server name. Default is 'localhost'
     [-port_out=<number>]             - MongoDB server port number. Default is 27017
     [-user_from1=<name>]             - MongoDB user name
     [-password_from1=<password>]     - MongoDB user password
     [-user_from2=<name>]             - MongoDB user name
     [-password_from2=<password>]     - MongoDB user password
     [-user_out=<name>]               - MongoDB user name
     [-password_out=<password>]       - MongoDB user password
     [-total=<number>]                - Total documents to be compared
     [-noCompFields=<name>]           - Fields that should not be compared
     [-takeFields=<name>]             - Fields that should be included in the new collection, even if compared
     [--noUpDate]                     - If present, it will not add the _updd field with the update date
     [--append]                       - If present, it will compose the collection without clearing it first
     [-indexField=<name>]             - parameter to determine the name of the field that will take on the role of collection index