Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.db.common / src / org / simantics / db / common / utils / VersionMapRequest.java

diff --git a/bundles/org.simantics.db.common/src/org/simantics/db/common/utils/VersionMapRequest.java b/bundles/org.simantics.db.common/src/org/simantics/db/common/utils/VersionMapRequest.java
new file mode 100644 (file)
index 0000000..4932ee0
--- /dev/null
+++ b/bundles/org.simantics.db.common/src/org/simantics/db/common/utils/VersionMapRequest.java
@@ -0,0 +1,37 @@
+package org.simantics.db.common.utils;\r
+\r
+import java.util.Map;\r
+\r
+import org.simantics.db.ReadGraph;\r
+import org.simantics.db.Resource;\r
+import org.simantics.db.common.NamedResource;\r
+import org.simantics.db.common.request.ResourceRead;\r
+import org.simantics.db.common.uri.UnescapedChildMapOfResource;\r
+import org.simantics.db.exception.DatabaseException;\r
+\r
+public class VersionMapRequest extends ResourceRead<VersionMap> {\r
+\r
+       public VersionMapRequest(Resource resource) {\r
+               super(resource);\r
+       }\r
+\r
+       @Override\r
+       public VersionMap perform(ReadGraph graph) throws DatabaseException {\r
+               VersionMap result = new VersionMap();\r
+               Map<String,Resource> childMap = graph.syncRequest(new UnescapedChildMapOfResource(resource));\r
+               for(Map.Entry<String,Resource> entry : childMap.entrySet()) {\r
+                       String s = entry.getKey();\r
+                       Resource r = entry.getValue();\r
+                       int pos = s.lastIndexOf('@');\r
+                       if(pos == -1)  {\r
+                               result.add(s, new NamedResource("", r));\r
+                       } else {\r
+                               String base = s.substring(0, pos);\r
+                               String version = s.substring(pos+1);\r
+                               result.add(base, new NamedResource(version, r));\r
+                       }\r
+               }\r
+               return result;\r
+       }\r
+\r
+}\r