X-Git-Url: http://git.argeo.org/?a=blobdiff_plain;ds=sidebyside;f=org.argeo.osgi.boot%2Fsrc%2Forg%2Fargeo%2Fosgi%2Fa2%2FA2Branch.java;fp=org.argeo.osgi.boot%2Fsrc%2Forg%2Fargeo%2Fosgi%2Fa2%2FA2Branch.java;h=070830e570ff812cca6b24004939b3390440aac6;hb=79e0a2a5d751c7c077e52f9ee54469656dc96a44;hp=0000000000000000000000000000000000000000;hpb=c155192cfcd5ca355eb933fa3f55dbad6d01b958;p=lgpl%2Fargeo-commons.git

diff --git a/org.argeo.osgi.boot/src/org/argeo/osgi/a2/A2Branch.java b/org.argeo.osgi.boot/src/org/argeo/osgi/a2/A2Branch.java
new file mode 100644
index 000000000..070830e57
--- /dev/null
+++ b/org.argeo.osgi.boot/src/org/argeo/osgi/a2/A2Branch.java
@@ -0,0 +1,85 @@
+package org.argeo.osgi.a2;
+
+import java.util.Collections;
+import java.util.SortedMap;
+import java.util.TreeMap;
+
+import org.argeo.osgi.boot.OsgiBootUtils;
+import org.osgi.framework.Version;
+
+/**
+ * A logical linear sequence of versions of a given {@link A2Component}. This is
+ * typically a combination of major and minor version, indicating backward
+ * compatibility.
+ */
+public class A2Branch implements Comparable<A2Branch> {
+	private final A2Component component;
+	private final String id;
+
+	final SortedMap<Version, A2Module> modules = Collections.synchronizedSortedMap(new TreeMap<>());
+
+	public A2Branch(A2Component component, String id) {
+		this.component = component;
+		this.id = id;
+		component.branches.put(id, this);
+	}
+
+	A2Module getOrAddModule(Version version, Object locator) {
+		if (modules.containsKey(version)) {
+			A2Module res = modules.get(version);
+			if (OsgiBootUtils.isDebug() && !res.getLocator().equals(locator)) {
+				OsgiBootUtils.debug("Inconsistent locator " + locator + " (registered: " + res.getLocator() + ")");
+			}
+			return res;
+		} else
+			return new A2Module(this, version, locator);
+	}
+
+	A2Module last() {
+		return modules.get(modules.lastKey());
+	}
+
+	A2Module first() {
+		return modules.get(modules.firstKey());
+	}
+
+	A2Component getComponent() {
+		return component;
+	}
+
+	String getId() {
+		return id;
+	}
+
+	@Override
+	public int compareTo(A2Branch o) {
+		return id.compareTo(id);
+	}
+
+	@Override
+	public int hashCode() {
+		return id.hashCode();
+	}
+
+	@Override
+	public boolean equals(Object obj) {
+		if (obj instanceof A2Branch) {
+			A2Branch o = (A2Branch) obj;
+			return component.equals(o.component) && id.equals(o.id);
+		} else
+			return false;
+	}
+
+	@Override
+	public String toString() {
+		return getCoordinates();
+	}
+
+	public String getCoordinates() {
+		return component + ":" + id;
+	}
+
+	static String versionToBranchId(Version version) {
+		return version.getMajor() + "." + version.getMinor();
+	}
+}