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There is a newer version: 8.15.1

/*
 * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
 * or more contributor license agreements. Licensed under the Elastic License
 * 2.0 and the Server Side Public License, v 1; you may not use this file except
 * in compliance with, at your election, the Elastic License 2.0 or the Server
 * Side Public License, v 1.
 */

package org.elasticsearch.ingest;

import org.elasticsearch.common.io.stream.StreamInput;
import org.elasticsearch.common.io.stream.StreamOutput;
import org.elasticsearch.common.io.stream.Writeable;
import org.elasticsearch.xcontent.ToXContentObject;
import org.elasticsearch.xcontent.XContentBuilder;

import java.io.IOException;

public class ProcessorInfo implements Writeable, ToXContentObject, Comparable {

    private final String type;

    public ProcessorInfo(String type) {
        this.type = type;
    }

    /**
     * Read from a stream.
     */
    public ProcessorInfo(StreamInput input) throws IOException {
        type = input.readString();
    }

    @Override
    public void writeTo(StreamOutput out) throws IOException {
        out.writeString(this.type);
    }

    /**
     * @return The unique processor type
     */
    public String getType() {
        return type;
    }

    @Override
    public XContentBuilder toXContent(XContentBuilder builder, Params params) throws IOException {
        builder.startObject();
        builder.field("type", type);
        builder.endObject();
        return null;
    }

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

        ProcessorInfo that = (ProcessorInfo) o;

        return type.equals(that.type);

    }

    @Override
    public int hashCode() {
        return type.hashCode();
    }

    @Override
    public int compareTo(ProcessorInfo o) {
        return type.compareTo(o.type);
    }
}