| /******************************************************************************* |
| * 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 org.eclipse.equinox.p2.ql.IEvaluationContext; |
| |
| abstract class UnaryCollectionFilter extends Unary { |
| |
| UnaryCollectionFilter(Expression collection) { |
| super(collection); |
| } |
| |
| public Object evaluate(IEvaluationContext context) { |
| return evaluateAsIterator(context); |
| } |
| |
| public void toString(StringBuffer bld) { |
| if (operand instanceof Select) { |
| Select select = (Select) operand; |
| CollectionFilter.appendProlog(bld, select.operand, getOperator()); |
| appendOperand(bld, select.lambda, getPriority()); |
| } else |
| CollectionFilter.appendProlog(bld, operand, getOperator()); |
| bld.append(')'); |
| } |
| |
| int getPriority() { |
| return PRIORITY_COLLECTION; |
| } |
| |
| boolean isCollection() { |
| return true; |
| } |
| |
| boolean isElementBoolean() { |
| return operand.isElementBoolean(); |
| } |
| } |