Examples of ORidBag

com.orientechnologies.orient.core.db.record.ridbag.ORidBag

A collection that contain links to {@link OIdentifiable}. Bag is similar to set but can contain several entering of the same object.
Could be tree based and embedded representation.

Embedded stores its content directly to the document that owns it.
It better fits for cases when only small amount of links are stored to the bag.
Tree-based implementation stores its content in a separate data structure called {@link OSBTreeBonsai}.
It fits great for cases when you have a huge amount of links.

The representation is automatically converted to tree-based implementation when top threshold is reached. And backward to embedded one when size is decreased to bottom threshold.
The thresholds could be configured by {@link OGlobalConfiguration#RID_BAG_EMBEDDED_TO_SBTREEBONSAI_THRESHOLD} and{@link OGlobalConfiguration#RID_BAG_SBTREEBONSAI_TO_EMBEDDED_THRESHOLD}.

This collection is used to efficiently manage relationships in graph model.

Does not implement {@link Collection} interface because some operations could not be efficiently implemented and that's whyshould be avoided.
@author Artem Orobets @author Andrey Lomakin @since 1.7rc1

    expected.add(new ORecordId("#77:21"));
    expected.add(new ORecordId("#77:22"));


    ODocument doc = new ODocument();


    final ORidBag bag = new ORidBag();
    bag.addAll(expected);


    doc.field("ridbag", bag);
    assertEmbedded(bag.isEmbedded());
    doc.save();
    final ORID id = doc.getIdentity();


    OStorage storage = database.getStorage();
    database.close();
    storage.close(true, false);


    database.open("admin", "admin");


    doc = database.load(id);
    doc.setLazyLoad(false);


    final ORidBag loaded = doc.field("ridbag");
    assertEmbedded(loaded.isEmbedded());


    Assert.assertEquals(loaded.size(), expected.size());
    for (OIdentifiable identifiable : loaded)
      Assert.assertTrue(expected.remove(identifiable));


    Assert.assertTrue(expected.isEmpty());
  }

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Examples of ORidBag

Examples of com.orientechnologies.orient.core.db.record.ridbag.ORidBag