br.edu.unochapeco.unoheartserver.util.CustomGsonBuilder.java Source code

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Here is the source code for br.edu.unochapeco.unoheartserver.util.CustomGsonBuilder.java

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/*
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package br.edu.unochapeco.unoheartserver.util;

import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.google.gson.JsonDeserializationContext;
import com.google.gson.JsonDeserializer;
import com.google.gson.JsonElement;
import com.google.gson.JsonPrimitive;
import com.google.gson.JsonSerializationContext;
import com.google.gson.JsonSerializer;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;

/**
 *
 * @author Eduardo
 */
public class CustomGsonBuilder {

    private static Gson gson;

    public static Gson getInstance() {
        if (gson == null) {

            gson = new GsonBuilder().registerTypeAdapter(LocalDate.class,
                    (JsonSerializer<LocalDate>) new JsonSerializer<LocalDate>() {

                        @Override
                        public JsonElement serialize(LocalDate t, java.lang.reflect.Type type,
                                JsonSerializationContext jsc) {
                            if (t != null) {
                                DateTimeFormatter dateTimeFormatter = DateTimeFormatter.ofPattern("yyyy-MM-dd");
                                return new JsonPrimitive(t.format(dateTimeFormatter));
                            } else {
                                return null;
                            }
                        }
                    }).registerTypeAdapter(LocalDate.class,
                            (JsonDeserializer<LocalDate>) new JsonDeserializer<LocalDate>() {

                                @Override
                                public LocalDate deserialize(JsonElement je, java.lang.reflect.Type type,
                                        JsonDeserializationContext jdc) {
                                    if (je.getAsJsonPrimitive().getAsString() != null) {
                                        return LocalDate.parse(
                                                je.getAsJsonPrimitive().getAsString().substring(0, 10).trim(),
                                                DateTimeFormatter.ofPattern("yyyy-MM-dd"));
                                    } else {
                                        return null;
                                    }
                                }
                            })
                    .registerTypeAdapter(LocalDateTime.class,
                            (JsonSerializer<LocalDateTime>) new JsonSerializer<LocalDateTime>() {

                                @Override
                                public JsonElement serialize(LocalDateTime t, java.lang.reflect.Type type,
                                        JsonSerializationContext jsc) {
                                    if (t != null) {
                                        DateTimeFormatter dateTimeFormatter = DateTimeFormatter
                                                .ofPattern("yyyy-MM-dd'T'HH:mm:ss");
                                        return new JsonPrimitive(t.format(dateTimeFormatter));
                                    } else {
                                        return null;
                                    }
                                }
                            })
                    .registerTypeAdapter(LocalDateTime.class, (JsonDeserializer<LocalDateTime>) (JsonElement je,
                            java.lang.reflect.Type type, JsonDeserializationContext jdc) -> {
                        if (je.getAsJsonPrimitive().getAsString() != null) {
                            return LocalDateTime.parse(je.getAsJsonPrimitive().getAsString().trim(),
                                    DateTimeFormatter.ofPattern("yyyy-MM-dd'T'HH:mm:ss"));
                        } else {
                            return null;
                        }
                    }).create();
        }
        return gson;
    }

}