1 files changed, 50 insertions, 0 deletions
diff --git a/bundles/org.eclipse.equinox.p2.ql/src/org/eclipse/equinox/internal/p2/ql/expression/Union.java b/bundles/org.eclipse.equinox.p2.ql/src/org/eclipse/equinox/internal/p2/ql/expression/Union.java
new file mode 100644
index 000000000..df8049a31
--- /dev/null
+++ b/bundles/org.eclipse.equinox.p2.ql/src/org/eclipse/equinox/internal/p2/ql/expression/Union.java
@@ -0,0 +1,50 @@
+/*******************************************************************************
+ * Copyright (c) 2009 Cloudsmith Inc. 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:
+ *     Cloudsmith Inc. - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.equinox.internal.p2.ql.expression;
+
+import java.util.Iterator;
+import java.util.Set;
+import org.eclipse.equinox.internal.p2.metadata.expression.*;
+import org.eclipse.equinox.p2.metadata.expression.IEvaluationContext;
+import org.eclipse.equinox.p2.ql.IQLExpression;
+
+/**
+ */
+final class Union extends Binary implements IQLConstants, IQLExpression {
+	Union(Expression operand, Expression param) {
+		super(operand, param);
+	}
+
+	public Object evaluate(IEvaluationContext context) {
+		return evaluateAsIterator(context);
+	}
+
+	public Iterator<?> evaluateAsIterator(IEvaluationContext context) {
+		@SuppressWarnings("unchecked")
+		Set<Object> resultSet = (Set<Object>) QLUtil.asSet(lhs.evaluate(context), true);
+		Iterator<?> itor = rhs.evaluateAsIterator(context);
+		while (itor.hasNext())
+			resultSet.add(itor.next());
+		return RepeatableIterator.create(resultSet);
+	}
+
+	public int getExpressionType() {
+		return TYPE_UNION;
+	}
+
+	public String getOperator() {
+		return KEYWORD_UNION;
+	}
+
+	public int getPriority() {
+		return PRIORITY_COLLECTION;
+	}
+}