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

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