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Utilities for serializing and de-serializing tasks and their additionalInformation
There is a newer version: 3.8.1
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 * regarding copyright ownership.  The ASF licenses this file   *
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package org.apache.james.server.task.json;

import java.io.IOException;
import java.util.Set;

import javax.inject.Inject;

import org.apache.james.json.JsonGenericSerializer;
import org.apache.james.server.task.json.dto.TaskDTO;
import org.apache.james.server.task.json.dto.TaskDTOModule;
import org.apache.james.task.Task;

import com.fasterxml.jackson.core.JsonProcessingException;
import com.google.common.annotations.VisibleForTesting;
import com.google.common.collect.ImmutableSet;

public class JsonTaskSerializer {

    public static JsonTaskSerializer of(TaskDTOModule... modules) {
        return new JsonTaskSerializer(ImmutableSet.copyOf(modules));
    }

    public static class InvalidTaskException  extends RuntimeException {
        public InvalidTaskException(JsonGenericSerializer.InvalidTypeException original) {
            super(original);
        }
    }

    public static class UnknownTaskException extends RuntimeException {
        public UnknownTaskException(JsonGenericSerializer.UnknownTypeException original) {
            super(original);
        }
    }

    private JsonGenericSerializer jsonGenericSerializer;

    @Inject
    @VisibleForTesting
    public JsonTaskSerializer(Set> modules) {
        jsonGenericSerializer = JsonGenericSerializer.forModules(modules).withoutNestedType();
    }

    public String serialize(Task task) throws JsonProcessingException {
        try {
            return jsonGenericSerializer.serialize(task);
        } catch (JsonGenericSerializer.UnknownTypeException e) {
            throw new UnknownTaskException(e);
        }
    }

    public Task deserialize(String value) throws IOException {
        try {
            return jsonGenericSerializer.deserialize(value);
        } catch (JsonGenericSerializer.UnknownTypeException e) {
            throw new UnknownTaskException(e);
        } catch (JsonGenericSerializer.InvalidTypeException e) {
            throw new InvalidTaskException(e);
        }
    }


}