1 files changed, 73 insertions, 0 deletions
diff --git a/bundles/org.eclipse.equinox.p2.metadata/src/org/eclipse/equinox/internal/provisional/p2/metadata/ProvidedCapability.java b/bundles/org.eclipse.equinox.p2.metadata/src/org/eclipse/equinox/internal/provisional/p2/metadata/ProvidedCapability.java
new file mode 100644
index 000000000..c3efb1402
--- /dev/null
+++ b/bundles/org.eclipse.equinox.p2.metadata/src/org/eclipse/equinox/internal/provisional/p2/metadata/ProvidedCapability.java
@@ -0,0 +1,73 @@
+/*******************************************************************************
+ * Copyright (c) 2007, 2008 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     IBM Corporation - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.equinox.internal.provisional.p2.metadata;
+
+import org.eclipse.core.runtime.Assert;
+import org.osgi.framework.Version;
+
+/**
+ * Describes a capability as exposed or required by an installable unit
+ */
+public class ProvidedCapability {
+	private final String name;
+	private final String namespace;
+	private final Version version;
+
+	ProvidedCapability(String namespace, String name, Version version) {
+		Assert.isNotNull(namespace);
+		Assert.isNotNull(name);
+		this.namespace = namespace;
+		this.name = name;
+		this.version = version == null ? Version.emptyVersion : version;
+	}
+
+	public boolean equals(Object other) {
+		if (other instanceof ProvidedCapability) {
+			ProvidedCapability otherCapability = (ProvidedCapability) other;
+			return otherCapability.namespace.equals(namespace) && otherCapability.name.equals(name) && otherCapability.version.equals(version);
+		}
+		return false;
+	}
+
+	public String getName() {
+		return name;
+	}
+
+	public String getNamespace() {
+		return namespace;
+	}
+
+	public Version getVersion() {
+		return version;
+	}
+
+	public int hashCode() {
+		return namespace.hashCode() * name.hashCode() * version.hashCode();
+	}
+
+	/**
+	 * TODO The name of this method is backwards. A provided capability does not
+	 * get satisfied - it is the required capability that is satisfied or not. It should be "satisfies"
+	 * or "isSatisfied"
+	 */
+	public boolean isSatisfiedBy(RequiredCapability candidate) {
+		if (getName() == null || !getName().equals(candidate.getName()))
+			return false;
+		if (getNamespace() == null || !getNamespace().equals(candidate.getNamespace()))
+			return false;
+		return candidate.getRange().isIncluded(version);
+	}
+
+	public String toString() {
+		return namespace + '/' + name + '/' + version;
+	}
+
+}