org.argeo.init/src/org/argeo/init/a2/A2Branch.java

   1 package org.argeo.init.a2;
   2
   3 import java.util.Collections;
   4 import java.util.SortedMap;
   5 import java.util.TreeMap;
   6
   7 import org.argeo.init.osgi.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         public Iterable<A2Module> listModules(Object filter) {
  28                 return modules.values();
  29         }
  30
  31         A2Module getOrAddModule(Version version, Object locator) {
  32                 if (modules.containsKey(version)) {
  33                         A2Module res = modules.get(version);
  34                         if (OsgiBootUtils.isDebug() && !res.getLocator().equals(locator)) {
  35                                 OsgiBootUtils.debug("Inconsistent locator " + locator + " (registered: " + res.getLocator() + ")");
  36                         }
  37                         return res;
  38                 } else
  39                         return new A2Module(this, version, locator);
  40         }
  41
  42         public A2Module last() {
  43                 return modules.get(modules.lastKey());
  44         }
  45
  46         public A2Module first() {
  47                 return modules.get(modules.firstKey());
  48         }
  49
  50         public A2Component getComponent() {
  51                 return component;
  52         }
  53
  54         public String getId() {
  55                 return id;
  56         }
  57
  58         @Override
  59         public int compareTo(A2Branch o) {
  60                 return id.compareTo(id);
  61         }
  62
  63         @Override
  64         public int hashCode() {
  65                 return id.hashCode();
  66         }
  67
  68         @Override
  69         public boolean equals(Object obj) {
  70                 if (obj instanceof A2Branch) {
  71                         A2Branch o = (A2Branch) obj;
  72                         return component.equals(o.component) && id.equals(o.id);
  73                 } else
  74                         return false;
  75         }
  76
  77         @Override
  78         public String toString() {
  79                 return getCoordinates();
  80         }
  81
  82         public String getCoordinates() {
  83                 return component + ":" + id;
  84         }
  85
  86         static String versionToBranchId(Version version) {
  87                 return version.getMajor() + "." + version.getMinor();
  88         }
  89 }