| /******************************************************************************* |
| * 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.HashSet; |
| import org.eclipse.equinox.p2.ql.IEvaluationContext; |
| |
| final class SetFunction extends Function { |
| |
| public SetFunction(Expression[] operands) { |
| super(operands); |
| } |
| |
| public Object evaluate(IEvaluationContext context) { |
| HashSet result = new HashSet(); |
| for (int idx = 0; idx < operands.length; ++idx) |
| result.add(operands[idx].evaluate(context)); |
| return result; |
| } |
| |
| String getOperator() { |
| return KEYWORD_SET; |
| } |
| |
| boolean isCollection() { |
| return true; |
| } |
| } |
