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Batch Metadata Editing Tool

DSpace provides a batch metadata editing tool. The batch editing tool is able to produce a comma delimited file in the CSV format. The batch editing tool facilitates the user to perform the following:

  • Batch editing of metadata (e.g. perform an external spell check)
  • Batch additions of metadata (e.g. add an abstract to a set of items, add controlled vocabulary such as LCSH)
  • Batch find and replace of metadata values (e.g. correct misspelled surname across several records)
  • Mass move items between collections
  • Mass deletion, withdrawal, or re-instatement of items
  • Enable the batch addition of new items (without bitstreams) via a CSV file
  • Re-order the values in a list (e.g. authors)

For information about configuration options for the Batch Metadata Editing tool, see Batch Metadata Editing Configuration

Export Function

Web Interface Export

Batch metadata exports (to CSV) can be performed from the Administrative menu:

  • Login as an Administrative user
  • Browse to the Community or Collection you wish to export, and click "Export Metadata" link to export to a downloadable CSV
    • In XMLUI, "Export Metadata" can be found in the "Context" menu on a Community/Collection homepage
    • In JSPUI, "Export Metadata" can be found in the "Admin Tools" menu on a Community/Collection homepage
  • Or search for items within your repository, and click "Export Metadata" in the search results to export to a downloadable CSV
    • In XMLUI, perform a search, and click on "Export Search Metadata" in the "Context" menu. By default, this option is only available to Administrators (xmlui.search.metadata_export=admin), but you can optionally allow any logged in user to export this metadata (xmlui.search.metadata_export=user), or anyone (xmlui.search.metadata_export=anonymous). 
    • In JSPUI, perform a search, and click on the "Export Metadata" button above the search results.

Please see below documentation for more information on the CSV format and actions that can be performed by editing the CSV.

Command Line Export

The following table summarizes the basics.

Command used:

[dspace]/bin/dspace metadata-export

Java class:

org.dspace.app.bulkedit.MetadataExport

Arguments short and (long) forms):

Description

-f or --file

Required. The filename of the resulting CSV.

-i or --id

The Item, Collection, or Community handle or Database ID to export. If not specified, all items will be exported.

-a or --all

Include all the metadata fields that are not normally changed (e.g. provenance) or those fields you configured in the [dspace]/config/modules/bulkedit.cfg to be ignored on export.

-h or --help

Display the help page.

To run the batch editing exporter, at the command line:

[dspace]/bin/dspace metadata-export -f name_of_file.csv -i 1023/24

Example:

[dspace]/bin/dspace metadata-export -f /batch_export/col_14.csv -i /1989.1/24

In the above example we have requested that a collection, assigned handle '1989.1/24' export the entire collection to the file 'col_14.csv' found in the '/batch_export' directory.

Please see below documentation for more information on the CSV format and actions that can be performed by editing the CSV .

Import Function

Importing large CSV files

It is not recommended to import CSV files of more than 1,000 lines (i.e. 1,000 items). When importing files larger than this, it may be difficult for an Administrator to accurately verify the changes that the import tool states it will make. In addition, depending on the memory available to the DSpace site, large files may cause 'Out Of Memory' errors part way through the import process.

Web Interface Import

Batch metadata imports (from CSV) can be performed from the Administrative menu:

  • First, complete all editing of the CSV and save your changes
  • Login as an Administrative User
  • Click "Import Metadata" and select the CSV file
    • In XMLUI, "Import Metadata" can be found under the "Administrative" menu on any page
    • In JSPUI, "Import Metadata" can be found under the "Administer" menu (under your user account dropdown). On the Adminstration Tools page, select "Import Metadata" from the "Content" dropdown
  • After uploading the CSV, you will be presented with a summary of all changes that will be performed in the system. You can review these changes and choose whether to apply them or cancel.

Command Line Import

The following table summarizes the basics.

Command used:

[dspace]/bin/dspace metadata-import

Java class:

org.dspace.app.bulkedit.MetadataImport

Arguments short and (long) forms:

Description

-f or --file

Required. The filename of the CSV file to load.

-s or --silent

Silent mode. The import function does not prompt you to make sure you wish to make the changes.

-e or --email

The email address of the user. This is only required when adding new items.

-w or --workflow

When adding new items, the program will queue the items up to use the Collection Workflow processes.

-n or --notify

when adding new items using a workflow, send notification emails.

-t or --template

When adding new items, use the Collection template, if it exists.

-h or --help

Display the brief help page.

Silent Mode should be used carefully. It is possible (and probable) that you can overlay the wrong data and cause irreparable damage to the database.

To run the batch importer, at the command line:

[dspace]/bin/dspace metadata-import -f name_of_file.csv

Example

[dspace]/bin/dspace metadata-import -f /dImport/col_14.csv

If you are wishing to upload new metadata without bitstreams, at the command line:

[dspace]/bin/dspace metadata-import -f /dImport/new_file.csv -e joe@user.com -w -n -t

In the above example we threw in all the arguments. This would add the metadata and engage the workflow, notification, and templates to all be applied to the items that are being added.

CSV Format

The CSV (comma separated values) files that this tool can import and export abide by the RFC4180 CSV format. This means that new lines, and embedded commas can be included by wrapping elements in double quotes. Double quotes can be included by using two double quotes. The code does all this for you, and any good csv editor such as Excel or OpenOffice will comply with this convention.

All CSV files are also in UTF-8 encoding in order to support all languages.

File Structure

The first row of the CSV must define the metadata values that the rest of the CSV represents. The first column must always be "id" which refers to the item's internal database ID. All other columns are optional. The other columns contain the dublin core metadata fields that the data is to reside.

A typical heading row looks like:

id,collection,dc.title,dc.contributor,dc.date.issued,etc,etc,etc.

Subsequent rows in the csv file relate to items. A typical row might look like:

350,2292,Item title,"Smith, John",2008

If you want to store multiple values for a given metadata element, they can be separated with the double-pipe '||' (or another character that you defined in your modules/bulkedit.cfg file). For example:

Horses||Dogs||Cats

Elements are stored in the database in the order that they appear in the CSV file. You can use this to order elements where order may matter, such as authors, or controlled vocabulary such as Library of Congress Subject Headings.

Editing the CSV

If you are editing with Microsoft Excel, be sure to open the CSV in Unicode/UTF-8 encoding

By default, Microsoft Excel may not correctly open the CSV in Unicode/UTF-8 encoding. This means that special characters may be improperly displayed and also can be "corrupted" during re-import of the CSV.

You need to tell Excel this CSV is Unicode, by importing it as follows. (Please note these instructions are valid for MS Office 2007 and 2013. Other Office versions may vary)

  • First, open Excel (with an empty sheet/workbook open)
  • Select "Data" tab
  • Click "From Text" button (in the "External Data" section)
  • Select your CSV file
  • Wizard Step 1
    • Choose "Delimited" option
    • Start import at row: 1
    • In the "File origin" selectbox, select "65001 : Unicode (UTF-8)"
      • NOTE: these encoding options are sorted alphabetically, so "Unicode (UTF-8)" appears near the bottom of the list.
    • Click Next
  • Wizard Step 2
    • Select "Comma" as the only delimiter
    • Click Next
  • Wizard Step 3
    • Select "Text" as the "Column data format" (Unfortunately, this must be done for each column individually in Excel)
      • At a minimum, you MUST ensure all date columns (e.g. dc.date.issued) are treated as "Text" so that Excel doesn't autoconvert DSpace's YYYY-MM-DD format into MM/DD/YYYY
      • To avoid such autoconversion, it is safest to ensure each column is treated as "Text".  Unfortunately, this means selecting each column one-by-one and choosing "Text" as the "Column data format".
    • Click Finish
  • Choose whether to open CSV in the existing sheet or a new one

Tips to Simplify the Editing Process

 When editing a CSV, here's a couple of basic tips to keep in mind:

  1. The "id" column MUST remain intact. This column also must always have a value in it.
  2. To simplify the CSV, you can simply remove any columns you do NOT wish to edit (except for "id" column, see #1). Don't worry, removing the entire column won't delete metadata (see #3)
  3. When importing a CSV file, the importer will overlay the metadata onto what is already in the repository to determine the differences. It only acts on the contents of the CSV file, rather than on the complete item metadata. This means that the CSV file that is exported can be manipulated quite substantially before being re-imported. Rows (items) or Columns (metadata elements) can be removed and will be ignored. 
    1. For example, if you only want to edit "dc.subject", you can remove ALL columns EXCEPT for "id" and "dc.subject" so that you can just manipulate the "dc.subject" field. On import, DSpace will see that you've only included the "dc.subject" field in your CSV and therefore will only update the "dc.subject" metadata field for any items listed in that CSV.
  4. Because removing an entire column does NOT delete metadata value(s), if you actually wish to delete a metadata value you should leave the column intact, and simply clear out the appropriate row's value (in that column).

 

Editing Collection Membership

Items can be moved between collections by editing the collection handles in the 'collection' column. Multiple collections can be included. The first collection is the 'owning collection'. The owning collection is the primary collection that the item appears in. Subsequent collections (separated by the field separator) are treated as mapped collections. These are the same as using the map item functionality in the DSpace user interface. To move items between collections, or to edit which other collections they are mapped to, change the data in the collection column.

Adding Metadata-Only Items

New metadata-only items can be added to DSpace using the batch metadata importer. To do this, enter a plus sign '+' in the first 'id' column. The importer will then treat this as a new item. If you are using the command line importer, you will need to use the -e flag to specify the user email address or id of the user that is registered as submitting the items.

Deleting Metadata

It is possible to perform metadata deletes across the board of certain metadata fields from an exported file. For example, let's say you have used keywords (dc.subject) that need to be removed en masse. You would leave the column (dc.subject) intact, but remove the data in the corresponding rows.

Performing 'actions' on items

It is possible to perform certain 'actions' on items.  This is achieved by adding an 'action' column to the CSV file (after the id, and collection columns).  There are three possible actions:

  1. 'expunge' This permanently deletes an item.  Use with care!  This action must be enabled by setting 'allowexpunge = true' in modules/bulkedit.cfg
  2. 'withdraw' This withdraws an item from the archive, but does not delete it.
  3. 'reinstate' This reinstates an item that has previously been withdrawn.

If an action makes no change (for example, asking to withdraw an item that is already withdrawn) then, just like metadata that has not changed, this will be ignored.

Migrating Data or Exchanging data

It is possible that you have data in one Dublin Core (DC) element and you wish to really have it in another. An example would be that your staff have input Library of Congress Subject Headings in the Subject field (dc.subject) instead of the LCSH field (dc.subject.lcsh). Follow these steps and your data is migrated upon import:

  1. Insert a new column. The first row should be the new metadata element. (We will refer to it as the TARGET)
  2. Select the column/rows of the data you wish to change. (We will refer to it as the SOURCE)
  3. Cut and paste this data into the new column (TARGET) you created in Step 1.
  4. Leave the column (SOURCE) you just cut and pasted from empty. Do not delete it.

Common Issues

Metadata values in CSV export seem to have duplicate columns

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