bundles/org.simantics.datatypes/src/org/simantics/datatypes/utils/BTree.java

   1 package org.simantics.datatypes.utils;
   2
   3 import java.util.List;
   4
   5 import org.simantics.databoard.Bindings;
   6 import org.simantics.databoard.binding.mutable.Variant;
   7 import org.simantics.datatypes.DatatypeResource;
   8 import org.simantics.db.ReadGraph;
   9 import org.simantics.db.Resource;
  10 import org.simantics.db.WriteGraph;
  11 import org.simantics.db.exception.DatabaseException;
  12 import org.simantics.scl.runtime.tuple.Tuple2;
  13
  14 public class BTree {
  15
  16         final private BTreeUtils utils;
  17
  18         public BTree(WriteGraph graph, int t, Resource ownerRelation) throws DatabaseException {
  19                 this(graph, t, ownerRelation, false);
  20         }
  21
  22         public BTree(WriteGraph graph, int t, Resource ownerRelation, boolean cached) throws DatabaseException {
  23                 utils = BTreeUtils.create(graph, ownerRelation, t, cached);
  24         }
  25
  26         public BTree(WriteGraph graph, int t, Resource type, Resource nodeType, Resource ownerRelation, boolean cached) throws DatabaseException {
  27                 utils = BTreeUtils.create(graph, type, nodeType, ownerRelation, t, cached);
  28         }
  29
  30         public BTree(ReadGraph graph, Resource tree) throws DatabaseException {
  31                 this(graph, tree, false);
  32         }
  33
  34         public BTree(ReadGraph graph, Resource tree, boolean cached) throws DatabaseException {
  35                 DatatypeResource DATA = DatatypeResource.getInstance(graph);
  36                 int t = graph.getRelatedValue(tree, DATA.BTree_t, Bindings.INTEGER);
  37                 Resource ownerRelation = graph.getPossibleObject(tree, DATA.BTree_HasOwnerRelation);
  38                 Resource nodeType = graph.getPossibleObject(tree, DATA.BTree_HasNodeType);
  39                 utils = new BTreeUtils(graph, tree, t, nodeType, ownerRelation, cached);
  40         }
  41
  42         public void flushCachedBTree(WriteGraph graph) throws DatabaseException {
  43                 utils.flushCache(graph);
  44         }
  45
  46         public Resource rootOfBTree() {
  47                 return utils.getTree();
  48         }
  49
  50         public void insertBTree(WriteGraph graph, Variant key, Resource value) throws DatabaseException {
  51                 utils.insert(graph, key, value);
  52         }
  53
  54         public Resource searchBTree(ReadGraph graph, Variant key) throws DatabaseException {
  55                 return utils.search(graph, key);
  56         }
  57
  58         public void removeBTree(WriteGraph graph, Variant key) throws DatabaseException {
  59                 utils.remove(graph, key);
  60         }
  61
  62         public List<Tuple2> entriesOfBTree(ReadGraph graph) throws DatabaseException {
  63                 return utils.entries(graph);
  64         }
  65
  66         public List<Tuple2> searchRangeBTree(ReadGraph graph, Variant min, Variant max) throws DatabaseException {
  67                 return utils.searchRange(graph, min, max);
  68         }
  69 }