Migrated source code from Simantics SVN

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

diff --git a/bundles/org.simantics.db.common/src/org/simantics/db/common/utils/VersionMap.java b/bundles/org.simantics.db.common/src/org/simantics/db/common/utils/VersionMap.java
new file mode 100644 (file)
index 0000000..060267c
--- /dev/null
+++ b/bundles/org.simantics.db.common/src/org/simantics/db/common/utils/VersionMap.java
@@ -0,0 +1,60 @@
+package org.simantics.db.common.utils;\r
+\r
+import java.util.ArrayList;\r
+import java.util.Collection;\r
+import java.util.List;\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.exception.DatabaseException;\r
+import org.simantics.utils.datastructures.MapList;\r
+import org.simantics.utils.strings.AlphanumComparator;\r
+\r
+public class VersionMap extends MapList<String,NamedResource> {\r
+\r
+       public NamedResource getNewest(ReadGraph graph, String baseName) {\r
+               List<NamedResource> versions = getValuesUnsafe(baseName);\r
+               if(versions == null || versions.isEmpty()) return null;\r
+               NamedResource result = versions.get(0);\r
+               for(int i=1;i<versions.size();i++) {\r
+                       NamedResource version = versions.get(i);\r
+                       if(AlphanumComparator.COMPARATOR.compare(version.getName(), result) > 0) result = version;\r
+               }\r
+               return result;\r
+       }\r
+       \r
+       public Collection<NamedResource> getOlderOrEqualVersions(ReadGraph graph, Resource artifact) throws DatabaseException {\r
+               String baseName = Versions.getBaseName(graph, artifact);\r
+               String version = Versions.getVersion(graph, artifact);\r
+               List<NamedResource> versions = getValuesUnsafe(baseName);\r
+               if(versions == null || versions.isEmpty()) return null;\r
+               ArrayList<NamedResource> result = new ArrayList<NamedResource>();\r
+               for(NamedResource nr : versions) {\r
+                       if(AlphanumComparator.COMPARATOR.compare(nr.getName(), version) <= 0) result.add(nr);\r
+               }\r
+               return result;\r
+       }\r
+\r
+       public Collection<NamedResource> getNewerOrEqualVersions(ReadGraph graph, Resource artifact) throws DatabaseException {\r
+               String baseName = Versions.getBaseName(graph, artifact);\r
+               String version = Versions.getVersion(graph, artifact);\r
+               List<NamedResource> versions = getValuesUnsafe(baseName);\r
+               if(versions == null || versions.isEmpty()) return null;\r
+               ArrayList<NamedResource> result = new ArrayList<NamedResource>();\r
+               for(NamedResource nr : versions) {\r
+                       if(AlphanumComparator.COMPARATOR.compare(nr.getName(), version) >= 0) result.add(nr);\r
+               }\r
+               return result;\r
+       }\r
+       \r
+       public boolean contains(String baseName, String version) {\r
+               List<NamedResource> versions = getValuesUnsafe(baseName);\r
+               if(versions == null || versions.isEmpty()) return false;\r
+               for(NamedResource nr : versions) {\r
+                       if(nr.getName().equals(version)) return true;\r
+               }\r
+               return false;\r
+       }\r
+       \r
+}\r