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/*******************************************************************************
* Copyright (c) 2009, 2017 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.metadata.expression;
import org.eclipse.equinox.p2.metadata.expression.IEvaluationContext;
abstract class UnaryCollectionFilter extends Unary {
UnaryCollectionFilter(Expression collection) {
super(collection);
}
@Override
public int hashCode() {
return 5 * operand.hashCode();
}
@Override
public Object evaluate(IEvaluationContext context) {
return evaluateAsIterator(context);
}
@Override
public void toString(StringBuffer bld, Variable rootVariable) {
if (operand instanceof Select) {
Select select = (Select) operand;
CollectionFilter.appendProlog(bld, rootVariable, select.operand, getOperator());
appendOperand(bld, rootVariable, select.lambda, getPriority());
} else
CollectionFilter.appendProlog(bld, rootVariable, operand, getOperator());
bld.append(')');
}
@Override
public int getPriority() {
return PRIORITY_COLLECTION;
}
}
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