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Eclipse Ditto is a framework for creating and managing digital twins in the IoT.

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/*
 * Copyright (c) 2017 Contributors to the Eclipse Foundation
 *
 * See the NOTICE file(s) distributed with this work for additional
 * information regarding copyright ownership.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License 2.0 which is available at
 * http://www.eclipse.org/legal/epl-2.0
 *
 * SPDX-License-Identifier: EPL-2.0
 */
package org.eclipse.ditto.connectivity.model;

import java.util.Map;

import org.eclipse.ditto.json.JsonField;
import org.eclipse.ditto.json.JsonFieldSelector;
import org.eclipse.ditto.json.JsonObject;
import org.eclipse.ditto.base.model.json.FieldType;
import org.eclipse.ditto.base.model.json.JsonSchemaVersion;
import org.eclipse.ditto.base.model.json.Jsonifiable;

/**
 * Definition of header mapping as a map. The key of the map defines the target of the mapping, the value defines the
 * source. Depending on the context where the mapping is used, placeholders are allowed in the value.
 */
public interface HeaderMapping extends Jsonifiable.WithFieldSelectorAndPredicate {

    /**
     * @return the header mapping definition
     */
    Map getMapping();

    @Override
    default JsonObject toJson() {
        return toJson(FieldType.notHidden());
    }

    @Override
    default JsonObject toJson(final JsonSchemaVersion schemaVersion, final JsonFieldSelector fieldSelector) {
        return toJson(schemaVersion, FieldType.notHidden()).get(fieldSelector);
    }
}