1 files changed, 106 insertions, 0 deletions
diff --git a/bundles/org.eclipse.equinox.p2.discovery/src/org/eclipse/equinox/internal/p2/discovery/model/Tag.java b/bundles/org.eclipse.equinox.p2.discovery/src/org/eclipse/equinox/internal/p2/discovery/model/Tag.java
new file mode 100644
index 000000000..f4f1f8bc2
--- /dev/null
+++ b/bundles/org.eclipse.equinox.p2.discovery/src/org/eclipse/equinox/internal/p2/discovery/model/Tag.java
@@ -0,0 +1,106 @@
+/*******************************************************************************
+ * Copyright (c) 2010 Tasktop Technologies 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:
+ *     Tasktop Technologies - initial API and implementation
+ *******************************************************************************/
+
+package org.eclipse.equinox.internal.p2.discovery.model;
+
+/**
+ * Provides means to tag items in the catalog.
+ * 
+ * @author David Green
+ * @author Steffen Pingel
+ */
+public class Tag extends AbstractCatalogItem {
+
+	private final Object classifier;
+
+	private final String value;
+
+	private final String label;
+
+	public Tag(String value, String label) {
+		this(null, value, label);
+	}
+
+	public Tag(Object tagClassifier, String value, String label) {
+		this.classifier = tagClassifier;
+		this.value = value;
+		this.label = label;
+	}
+
+	/**
+	 * the classifier, which places the tag in a logical category
+	 * 
+	 * @return the classifier or null if this tag is not in any category
+	 */
+	public Object getTagClassifier() {
+		return classifier;
+	}
+
+	/**
+	 * Returns the value of the tag, not intended for display.
+	 */
+	public String getValue() {
+		return value;
+	}
+
+	/**
+	 * Returns a short user-visible value that is used by the user to identify the tag.
+	 */
+	public String getLabel() {
+		return label;
+	}
+
+	@Override
+	public String toString() {
+		return "Tag [classifier=" + classifier + ", value=" + value + ", label=" + label + "]"; //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$
+	}
+
+	@Override
+	public int hashCode() {
+		// we don't include the label here
+		final int prime = 31;
+		int result = 1;
+		result = prime * result + ((classifier == null) ? 0 : classifier.hashCode());
+		result = prime * result + ((value == null) ? 0 : value.hashCode());
+		return result;
+	}
+
+	@Override
+	public boolean equals(Object obj) {
+		// we don't consider the label when comparing equality
+		if (this == obj) {
+			return true;
+		}
+		if (obj == null) {
+			return false;
+		}
+		if (getClass() != obj.getClass()) {
+			return false;
+		}
+		Tag other = (Tag) obj;
+		if (classifier == null) {
+			if (other.classifier != null) {
+				return false;
+			}
+		} else if (!classifier.equals(other.classifier)) {
+			return false;
+		}
+		if (value == null) {
+			if (other.value != null) {
+				return false;
+			}
+		} else if (!value.equals(other.value)) {
+			return false;
+		}
+		return true;
+	}
+
+}