/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 *
 *   SPDX-License-Identifier: Apache-2.0
 */

package org.apache.jena.shacl.validation.event;

import org.apache.jena.graph.Node;
import org.apache.jena.shacl.engine.ValidationContext;
import org.apache.jena.shacl.parser.Shape;

import java.util.Objects;

/**
 * Event type used for all events after the selection of a focus node.
 */
public abstract class AbstractFocusNodeValidationEvent extends AbstractShapeValidationEvent implements
                FocusNodeValidationEvent {
    protected final Node focusNode;

    public AbstractFocusNodeValidationEvent(ValidationContext vCxt,
                    Shape shape, Node focusNode) {
        super(vCxt, shape);
        Objects.requireNonNull(focusNode);
        this.focusNode = focusNode;
    }

    @Override public Node getFocusNode() {
        return focusNode;
    }

    @Override public boolean equals(Object o) {
        if (this == o)
            return true;
        if (o == null || getClass() != o.getClass())
            return false;
        if (!super.equals(o))
            return false;
        AbstractFocusNodeValidationEvent that = (AbstractFocusNodeValidationEvent) o;
        return getFocusNode().equals(that.getFocusNode());
    }

    @Override public int hashCode() {
        int result = super.hashCode();
        result = 31 * result + getFocusNode().hashCode();
        return result;
    }

}
