X-Git-Url: https://git.argeo.org/?p=lgpl%2Fargeo-commons.git;a=blobdiff_plain;f=org.argeo.init%2Fsrc%2Forg%2Fargeo%2Fapi%2Fa2%2FA2Branch.java;fp=org.argeo.init%2Fsrc%2Forg%2Fargeo%2Fapi%2Fa2%2FA2Branch.java;h=0b4ef36f7aba78c8944a8e01f3d72e07da670591;hp=0000000000000000000000000000000000000000;hb=b95462873703848193e56fcbe997693630db6121;hpb=55d88fba80cec198a0f11ba7545e19878c51fc5e

diff --git a/org.argeo.init/src/org/argeo/api/a2/A2Branch.java b/org.argeo.init/src/org/argeo/api/a2/A2Branch.java
new file mode 100644
index 000000000..0b4ef36f7
--- /dev/null
+++ b/org.argeo.init/src/org/argeo/api/a2/A2Branch.java
@@ -0,0 +1,93 @@
+package org.argeo.api.a2;
+
+import java.lang.System.Logger;
+import java.lang.System.Logger.Level;
+import java.util.Collections;
+import java.util.SortedMap;
+import java.util.TreeMap;
+
+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 static Logger logger = System.getLogger(A2Branch.class.getName());
+
+	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);
+	}
+
+	public Iterable<A2Module> listModules(Object filter) {
+		return modules.values();
+	}
+
+	A2Module getOrAddModule(Version version, Object locator) {
+		if (modules.containsKey(version)) {
+			A2Module res = modules.get(version);
+			if (!res.getLocator().equals(locator)) {
+				logger.log(Level.TRACE,
+						() -> "Inconsistent locator " + locator + " (registered: " + res.getLocator() + ")");
+			}
+			return res;
+		} else
+			return new A2Module(this, version, locator);
+	}
+
+	public A2Module last() {
+		return modules.get(modules.lastKey());
+	}
+
+	public A2Module first() {
+		return modules.get(modules.firstKey());
+	}
+
+	public A2Component getComponent() {
+		return component;
+	}
+
+	public 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();
+	}
+}