1 files changed, 58 insertions, 0 deletions
diff --git a/bundles/org.eclipse.equinox.p2.metadata/src/org/eclipse/equinox/internal/p2/query/QueryHelpers.java b/bundles/org.eclipse.equinox.p2.metadata/src/org/eclipse/equinox/internal/p2/query/QueryHelpers.java
new file mode 100644
index 000000000..794ceff2b
--- /dev/null
+++ b/bundles/org.eclipse.equinox.p2.metadata/src/org/eclipse/equinox/internal/p2/query/QueryHelpers.java
@@ -0,0 +1,58 @@
+/******************************************************************************* 
+* Copyright (c) 2009 EclipseSource 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:
+*   EclipseSource - initial API and implementation
+******************************************************************************/
+package org.eclipse.equinox.internal.p2.query;
+
+
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import org.eclipse.equinox.p2.query.IQuery;
+
+/**
+ * Static helper methods for the Query API.
+ * 
+ * @noextend This class is not intended to be subclassed by clients.
+ */
+public class QueryHelpers {
+	/**
+	 * Gets the ID for a Query. 
+	 * 
+	 * @noreference This method is not intended to be referenced by clients.
+	 */
+	public static String getId(IQuery<?> query) {
+		return query.getClass().getName();
+	}
+
+	/**
+	 * Gets a particular property of a query.
+	 * @param query The query to retrieve the property from
+	 * @param property The property to retrieve 
+	 * 
+	 * @noreference This method is not intended to be referenced by clients.
+	 */
+	public static Object getProperty(IQuery<?> query, String property) {
+		Class<?> clazz = query.getClass();
+		Object result = null;
+		try {
+			Method method = clazz.getMethod("get" + property, new Class[0]); //$NON-NLS-1$
+			result = method.invoke(query, new Object[0]);
+		} catch (SecurityException e) {
+			return null;
+		} catch (NoSuchMethodException e) {
+			return null;
+		} catch (IllegalArgumentException e) {
+			return null;
+		} catch (IllegalAccessException e) {
+			return null;
+		} catch (InvocationTargetException e) {
+			return null;
+		}
+		return result;
+	}
+}