de.deepamehta.files.migrations.Migration4 Maven / Gradle / Ivy
package de.deepamehta.files.migrations;
import de.deepamehta.core.Topic;
import de.deepamehta.core.model.SimpleValue;
import de.deepamehta.core.service.Migration;
import java.util.List;
import java.util.logging.Logger;
/**
* Renames root Folder topics, in case of dm4.filerepo.per_workspace=true.
* Renames topic type "Disk Quota" -> "Disk Quota (MB)".
* Installs the file size renderer.
*
* Runs only in UPDATE mode.
*
* Part of DM 4.8
*/
public class Migration4 extends Migration {
// ------------------------------------------------------------------------------------------------------- Constants
private static final boolean FILE_REPOSITORY_PER_WORKSPACE = Boolean.getBoolean("dm4.filerepo.per_workspace");
// ---------------------------------------------------------------------------------------------- Instance Variables
private Logger logger = Logger.getLogger(getClass().getName());
// -------------------------------------------------------------------------------------------------- Public Methods
@Override
public void run() {
// 1) Rename root Folder topics
if (FILE_REPOSITORY_PER_WORKSPACE) {
List workspaces = dm4.getTopicsByType("dm4.workspaces.workspace");
logger.info("########## Renaming root Folder topics of " + workspaces.size() + " possible workspaces");
int renamed = 0;
for (Topic workspace : workspaces) {
Topic folderTopic = fetchFolderTopic("/workspace-" + workspace.getId());
if (folderTopic != null) {
folderTopic.getChildTopics().set("dm4.files.folder_name", workspace.getSimpleValue().toString());
renamed++;
}
}
logger.info("########## Root Folder topics renamed: " + renamed);
} else {
logger.info("########## Renaming root Folder topics ABORTED -- per-workspace file repositories are " +
"switched off");
}
//
// 2) Rename topic type "Disk Quota"
dm4.getTopicType("dm4.files.disk_quota").setSimpleValue("Disk Quota (MB)");
//
// 3) Install file size renderer
addTopicTypeSetting("dm4.files.size", "simple_renderer_uri", "dm4.files.file_size_renderer");
}
// ------------------------------------------------------------------------------------------------- Private Methods
/**
* Fetches the Folder topic representing the directory at the given repository path.
* If no such Folder topic exists null is returned.
*/
private Topic fetchFolderTopic(String repoPath) {
Topic topic = dm4.getTopicByValue("dm4.files.path", new SimpleValue(repoPath));
return topic != null ? topic.getRelatedTopic("dm4.core.composition", "dm4.core.child", "dm4.core.parent",
"dm4.files.folder") : null;
}
}