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Graylog

There is a newer version: 6.0.6

/**
 * This file is part of Graylog.
 *
 * Graylog is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Graylog is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Graylog.  If not, see .
 */
package org.graylog2.contentpacks.model.constraints;

import com.fasterxml.jackson.annotation.JsonProperty;
import com.fasterxml.jackson.annotation.JsonSubTypes;
import com.fasterxml.jackson.annotation.JsonTypeInfo;

import java.util.Optional;

@JsonTypeInfo(use = JsonTypeInfo.Id.NAME, include = JsonTypeInfo.As.EXISTING_PROPERTY, property = Constraint.FIELD_META_TYPE)
@JsonSubTypes({
        @JsonSubTypes.Type(value = GraylogVersionConstraint.class, name = GraylogVersionConstraint.TYPE_NAME),
        @JsonSubTypes.Type(value = PluginVersionConstraint.class, name = PluginVersionConstraint.TYPE_NAME)
})
public interface Constraint {
    String FIELD_META_TYPE = "type";

    @JsonProperty(FIELD_META_TYPE)
    String type();

    interface ConstraintBuilder {
        @JsonProperty(FIELD_META_TYPE)
        SELF type(String type);
    }
}