001 package de.deepamehta.plugins.topicmaps.migrations;
002
003 import de.deepamehta.core.Association;
004 import de.deepamehta.core.ChildTopics;
005 import de.deepamehta.core.Topic;
006 import de.deepamehta.core.service.Migration;
007
008 import java.util.logging.Logger;
009
010
011
012 /**
013 * Converts the "Topic Mapcontext" association's child topics into properties.
014 * Runs only in UPDATE mode.
015 * <p>
016 * Part of DM 4.6
017 */
018 public class Migration4 extends Migration {
019
020 // ---------------------------------------------------------------------------------------------- Instance Variables
021
022 private long assocs = 0, topicsDeleted = 0, typesDeleted = 0;
023
024 private Logger logger = Logger.getLogger(getClass().getName());
025
026 // -------------------------------------------------------------------------------------------------- Public Methods
027
028 @Override
029 public void run() {
030 logger.info("########## Converting \"Topic Mapcontext\" associations");
031 //
032 // 1) convert the "Topic Mapcontext" association's child topics into properties
033 for (Association assoc : dms.getAssociations("dm4.topicmaps.topic_mapcontext")) {
034 migrateMapcontextAssociation(assoc);
035 }
036 //
037 // 2) delete "Topic Mapcontext" child types
038 deleteTopicType("dm4.topicmaps.x");
039 deleteTopicType("dm4.topicmaps.y");
040 deleteTopicType("dm4.topicmaps.visibility");
041 //
042 // 3) make "Topic Mapcontext" a simple type
043 dms.getAssociationType("dm4.topicmaps.topic_mapcontext").setDataTypeUri("dm4.core.text");
044 //
045 logger.info("########## Converting \"Topic Mapcontext\" associations complete.\n Associations processed: " +
046 assocs + "\n X, Y, Visibility topics deleted: " + topicsDeleted + "\n Topic types deleted: " +
047 typesDeleted);
048 }
049
050 // ------------------------------------------------------------------------------------------------- Private Methods
051
052 private void migrateMapcontextAssociation(Association assoc) {
053 assocs++;
054 //
055 ChildTopics childs = assoc.getChildTopics();
056 int x = childs.getInt("dm4.topicmaps.x");
057 int y = childs.getInt("dm4.topicmaps.y");
058 boolean visibility = childs.getBoolean("dm4.topicmaps.visibility");
059 //
060 assoc.setProperty("dm4.topicmaps.x", x, false); // addToIndex = false
061 assoc.setProperty("dm4.topicmaps.y", y, false); // addToIndex = false
062 assoc.setProperty("dm4.topicmaps.visibility", visibility, false); // addToIndex = false
063 }
064
065 private void deleteTopicType(String topicTypeUri) {
066 typesDeleted++;
067 // delete instances
068 for (Topic topic : dms.getTopics(topicTypeUri, 0)) { // maxResultSize=0
069 topic.delete();
070 topicsDeleted++;
071 }
072 // delete type
073 dms.deleteTopicType(topicTypeUri);
074 }
075 }