bundles/org.simantics.db.common/src/org/simantics/db/common/utils/VersionMap.java

   1 package org.simantics.db.common.utils;
   2
   3 import java.util.ArrayList;
   4 import java.util.Collection;
   5 import java.util.List;
   6
   7 import org.simantics.db.ReadGraph;
   8 import org.simantics.db.Resource;
   9 import org.simantics.db.common.NamedResource;
  10 import org.simantics.db.exception.DatabaseException;
  11 import org.simantics.utils.datastructures.MapList;
  12 import org.simantics.utils.strings.AlphanumComparator;
  13
  14 public class VersionMap extends MapList<String,NamedResource> {
  15
  16         public NamedResource getNewest(ReadGraph graph, String baseName) {
  17                 List<NamedResource> versions = getValuesUnsafe(baseName);
  18                 if(versions == null || versions.isEmpty()) return null;
  19                 NamedResource result = versions.get(0);
  20                 for(int i=1;i<versions.size();i++) {
  21                         NamedResource version = versions.get(i);
  22                         if(AlphanumComparator.COMPARATOR.compare(version.getName(), result) > 0) result = version;
  23                 }
  24                 return result;
  25         }
  26
  27         public Collection<NamedResource> getOlderOrEqualVersions(ReadGraph graph, Resource artifact) throws DatabaseException {
  28                 String baseName = Versions.getBaseName(graph, artifact);
  29                 String version = Versions.getVersion(graph, artifact);
  30                 List<NamedResource> versions = getValuesUnsafe(baseName);
  31                 if(versions == null || versions.isEmpty()) return null;
  32                 ArrayList<NamedResource> result = new ArrayList<NamedResource>();
  33                 for(NamedResource nr : versions) {
  34                         if(AlphanumComparator.COMPARATOR.compare(nr.getName(), version) <= 0) result.add(nr);
  35                 }
  36                 return result;
  37         }
  38
  39         public Collection<NamedResource> getNewerOrEqualVersions(ReadGraph graph, Resource artifact) throws DatabaseException {
  40                 String baseName = Versions.getBaseName(graph, artifact);
  41                 String version = Versions.getVersion(graph, artifact);
  42                 List<NamedResource> versions = getValuesUnsafe(baseName);
  43                 if(versions == null || versions.isEmpty()) return null;
  44                 ArrayList<NamedResource> result = new ArrayList<NamedResource>();
  45                 for(NamedResource nr : versions) {
  46                         if(AlphanumComparator.COMPARATOR.compare(nr.getName(), version) >= 0) result.add(nr);
  47                 }
  48                 return result;
  49         }
  50
  51         public boolean contains(String baseName, String version) {
  52                 List<NamedResource> versions = getValuesUnsafe(baseName);
  53                 if(versions == null || versions.isEmpty()) return false;
  54                 for(NamedResource nr : versions) {
  55                         if(nr.getName().equals(version)) return true;
  56                 }
  57                 return false;
  58         }
  59
  60 }