/*******************************************************************************
 * Copyright (c) 2009, 2018 SAP AG and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v2.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v20.html
 * 
 * Contributors:
 *     SAP AG - initial API and implementation
 ******************************************************************************/
package org.eclipse.ocl.examples.eventmanager.filters;

import org.eclipse.emf.common.notify.Notification;
import org.eclipse.ocl.examples.eventmanager.EventFilter;
import org.eclipse.ocl.examples.eventmanager.framework.LogicalOperationFilterImpl;


/**
 * Is an {@link LogicalOperationFilter} implementing the or-operator, so it
 * matches if any of the contained operand matches the {@link Notification}.
 * @author Philipp Berger
 *
 */
public class OrFilter extends LogicalOperationFilterImpl {

    public OrFilter() {
        super();
    }

    public OrFilter(EventFilter... newFilters) {
        super(newFilters);
    }

    public boolean matchesFor(Notification event) {
        for (EventFilter otherFilter : getOperands()) {
            if (otherFilter.matchesFor(event))
                return true;
        }
        return false;
    }

    @Override
    public String toString() {
        StringBuilder bld = new StringBuilder();
        boolean first = true;

        for (EventFilter f : getOperands()) {
            if (!first) {
                bld.append("\n OR ");
            } else {
                first = false;
            }
            bld.append("(");
            bld.append(f.toString());
            bld.append(")");
        }

        return bld.toString();
    }

    @Override
    public OrFilter clone() {
        return new OrFilter(cloneContents());

    }

} // OrFilterImpl