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The Urban Airship Java client library

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package com.urbanairship.api.channel.parse;

import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.databind.JsonDeserializer;
import com.google.common.base.Supplier;
import com.google.common.collect.ImmutableMap;
import com.urbanairship.api.channel.Constants;
import com.urbanairship.api.channel.model.OpenChannelResponse;
import com.urbanairship.api.common.parse.FieldParser;
import com.urbanairship.api.common.parse.FieldParserRegistry;
import com.urbanairship.api.common.parse.MapFieldParserRegistry;
import com.urbanairship.api.common.parse.StandardObjectDeserializer;

import java.io.IOException;

public class OpenChannelResponseDeserializer extends JsonDeserializer {
    private static final FieldParserRegistry FIELD_PARSERS = new MapFieldParserRegistry(
            ImmutableMap.>builder()
            .put("ok", new FieldParser() {
                @Override
                public void parse(OpenChannelResponseReader reader, JsonParser parser, DeserializationContext context) throws IOException {
                    reader.readOk(parser);
                }
            })
            .put(Constants.CHANNEL_ID, new FieldParser() {
                @Override
                public void parse(OpenChannelResponseReader reader, JsonParser parser, DeserializationContext context) throws IOException {
                    reader.readChannelId(parser);
                }
            })
            .build()
    );

    private final StandardObjectDeserializer deserializer;

    public OpenChannelResponseDeserializer() {
        deserializer = new StandardObjectDeserializer(
                FIELD_PARSERS,
                new Supplier() {
                    @Override
                    public OpenChannelResponseReader get() {
                        return new OpenChannelResponseReader();
                    }
                }
        );
    }

    @Override
    public OpenChannelResponse deserialize(JsonParser parser, DeserializationContext context) throws IOException {
        return deserializer.deserialize(parser, context);
    }
}