org.argeo.osgi.boot/src/org/argeo/osgi/a2/A2Branch.java

   1 package org.argeo.osgi.a2;
   2
   3 import java.util.Collections;
   4 import java.util.SortedMap;
   5 import java.util.TreeMap;
   6
   7 import org.argeo.osgi.boot.OsgiBootUtils;
   8 import org.osgi.framework.Version;
   9
  10 /**
  11  * A logical linear sequence of versions of a given {@link A2Component}. This is
  12  * typically a combination of major and minor version, indicating backward
  13  * compatibility.
  14  */
  15 public class A2Branch implements Comparable<A2Branch> {
  16         private final A2Component component;
  17         private final String id;
  18
  19         final SortedMap<Version, A2Module> modules = Collections.synchronizedSortedMap(new TreeMap<>());
  20
  21         public A2Branch(A2Component component, String id) {
  22                 this.component = component;
  23                 this.id = id;
  24                 component.branches.put(id, this);
  25         }
  26
  27         A2Module getOrAddModule(Version version, Object locator) {
  28                 if (modules.containsKey(version)) {
  29                         A2Module res = modules.get(version);
  30                         if (OsgiBootUtils.isDebug() && !res.getLocator().equals(locator)) {
  31                                 OsgiBootUtils.debug("Inconsistent locator " + locator + " (registered: " + res.getLocator() + ")");
  32                         }
  33                         return res;
  34                 } else
  35                         return new A2Module(this, version, locator);
  36         }
  37
  38         A2Module last() {
  39                 return modules.get(modules.lastKey());
  40         }
  41
  42         A2Module first() {
  43                 return modules.get(modules.firstKey());
  44         }
  45
  46         A2Component getComponent() {
  47                 return component;
  48         }
  49
  50         String getId() {
  51                 return id;
  52         }
  53
  54         @Override
  55         public int compareTo(A2Branch o) {
  56                 return id.compareTo(id);
  57         }
  58
  59         @Override
  60         public int hashCode() {
  61                 return id.hashCode();
  62         }
  63
  64         @Override
  65         public boolean equals(Object obj) {
  66                 if (obj instanceof A2Branch) {
  67                         A2Branch o = (A2Branch) obj;
  68                         return component.equals(o.component) && id.equals(o.id);
  69                 } else
  70                         return false;
  71         }
  72
  73         @Override
  74         public String toString() {
  75                 return getCoordinates();
  76         }
  77
  78         public String getCoordinates() {
  79                 return component + ":" + id;
  80         }
  81
  82         static String versionToBranchId(Version version) {
  83                 return version.getMajor() + "." + version.getMinor();
  84         }
  85 }