|
|
| (3 intermediate revisions by the same user not shown) |
| Line 1: |
Line 1: |
| __TOC__
| | Data Migration And Sharing. |
| ==Add support for appending CSV data to an existing table==
| |
| *Status: DONE
| |
| *{{wish|305505}}
| |
|
| |
|
| ===Rationale===
| | {{Note|TODO: Move content from [http://kexi-project. org/wiki/wikiview/[email protected]]}} |
| Appending CSV data to an existing table gives a simple means for merging CSV data chunks in one step.
| |
|
| |
|
| ===Assumptions & Requirements===
| | *[[/General/]] |
| *The data should be appended to the existing table, without changes made to the
| | *[[Kexi/Junior_Jobs#Migration|Junior Jobs]] |
| *Data is in largely the same format (regarding column or data types) as the data used to create the original table, to achieve this: | |
| **Data types for columns should be taken from the schema of the destination table | |
| **Column names stay untouched in the destination table, however autodetection should be still used to figure out value of the "First row contains column names" option; the option can be changed in the
| |
|
| |
|
| *Conflicts resolutions: | | ==File formats== |
| **Data type violations (for example when importing string when numeric value is expected): TODO - for 2.6 we need to have friendly error message at least | | *[[/CSV/]] |
| ***Future: propose skipping conflicting values | | *[[/MDB/]] |
| **Primary key violations: TODO - for 2.6 we need to have friendly error message at least | | *[[/ODB/]] |
| ***Future: propose skipping records with conflicting values or replacing the old records with new ones | | *[[/Spreadsheet/]] |
| **Future: unique key violations: TODO | | *[[/SQLite/]] |
| | *[[/Fixed Width Text/]] |
|
| |
|
| ===GUI Design=== | | ==Servers== |
| Existing GUI is based on single dialog as follows:<br/>
| | *[[/MySQL/]] |
| [[Image:Kexi CSV Import Dialog.png|500px]]
| | *[[/PostgreSQL/]] |
| | |
| Switching to KAssistantDialog is needed.
| |
| Proposed pages:
| |
| 1. File selection (implementation already exists but uses separate modal dialog)
| |
| | |
| 2. Data preview and options (implementation already exists but uses separate modal dialog)
| |
| | |
| 3. Destination Selection page:
| |
| *[KexiCommandLinkButton 3.1]: Import data into a new table | |
| *[KexiCommandLinkButton 3.2]: Append data to existing table
| |
| | |
| 4.1. (when 3.1 clicked) Save Object As (implementation already exists but uses separate modal dialog)
| |
| | |
| 4.2. (when 3.2 clicked) Select destination table
| |
| *use KexiFieldListView for the list of tables
| |
| *double click on name should do the same as clicking Next button
| |
| | |
| 5. Importing
| |
| *display progress bar
| |
| *while importing disable all buttons but cancel
| |
| *hide the progress when done with importing and display "Data has been successfully imported to table "%1" (implementation already exists but uses separate modal dialog)
| |
| *available buttons should be: "Open..." and "Close"; "Cancel" should not be displayed after importing (implementation already exists but uses separate modal dialog)
| |
| | |
| ==Porting to non-modal assistants==
| |
| *Status: TODO
| |
| | |
| '''What is involved in porting to the new gui?''' <jstaniek>: We sit and design the given assistant and I am helping with using the API and possibly extending/fixing it. The difference is that many imports can be started concurrently so some extra checking may be needed but this is a side note. Also e.g. user could try to edit/remove a source table during export. So this is fun. But after the change the GUI would be a lot more natural I think.
| |
| | |
| ==Migration from file-based project to a MySQL database project==
| |
| This is sqlite3 to mysql conversion using python script sqlite3-to-mysql.py, see also this [http://www.redmine.org/boards/2/topics/12793 thread].
| |
| | |
| Steps for importing mydb project from file into a MySQL db server:
| |
| | |
| 1. Execute:
| |
| % sqlite3 mydb.kexi .dump > mydb.sql
| |
| 2. Download [[/sqlite3-to-mysql.py/]] and run:
| |
| % ./sqlite3-to-mysql.py mydb.sql > mydb.mysql
| |
| 3. Create empty MySQL database
| |
| % mysqladmin -p -u ..... create mydb
| |
| 4. Finally, import
| |
| % mysql -p -u ..... mydb < mydb.mysql
| |
| | |
| Notes:
| |
| *This tool can fail if large photos where stored in the database.
| |
| *This tool is pretty slow.
| |
| *Final solution will be just one click away in Kexi.
| |
| | |
| ==Primary Key Matters==
| |
| *Status: IN PROGRESS
| |
| | |
| This section lists matters and solutions needed while importing new or existing primary key is encountered in the destination table.
| |
