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/*
 * Copyright (C) 2020 Graylog, Inc.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the Server Side Public License, version 1,
 * as published by MongoDB, Inc.
 *
 * This program 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
 * Server Side Public License for more details.
 *
 * You should have received a copy of the Server Side Public License
 * along with this program. If not, see
 * .
 */
package org.graylog.events.processor.aggregation;

import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
import com.google.auto.value.AutoValue;
import org.graylog.events.conditions.Expression;

import javax.annotation.Nullable;
import java.util.Optional;

@AutoValue
@JsonDeserialize(builder = AggregationConditions.Builder.class)
public abstract class AggregationConditions {
    private static final String FIELD_EXPRESSION = "expression";

    @JsonProperty(FIELD_EXPRESSION)
    public abstract Optional> expression();

    public static Builder builder() {
        return Builder.create();
    }

    public abstract Builder toBuilder();

    @AutoValue.Builder
    public static abstract class Builder {
        @JsonCreator
        public static Builder create() {
            return new AutoValue_AggregationConditions.Builder();
        }

        @JsonProperty(FIELD_EXPRESSION)
        public abstract Builder expression(@Nullable Expression expression);

        public abstract AggregationConditions build();
    }
}