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Java SDK for Serverless Workflow Specification

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/*
 * Copyright 2020-Present The Serverless Workflow Specification Authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package io.serverlessworkflow.api.serializers;

import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.databind.SerializerProvider;
import com.fasterxml.jackson.databind.ser.std.StdSerializer;
import io.serverlessworkflow.api.end.ContinueAs;
import java.io.IOException;

public class ContinueAsSerializer extends StdSerializer {

  public ContinueAsSerializer() {
    this(ContinueAs.class);
  }

  protected ContinueAsSerializer(Class t) {
    super(t);
  }

  @Override
  public void serialize(ContinueAs continueAs, JsonGenerator gen, SerializerProvider provider)
      throws IOException {

    if (continueAs != null) {
      if ((continueAs.getWorkflowId() != null && !continueAs.getWorkflowId().isEmpty())
          && (continueAs.getVersion() == null || continueAs.getVersion().isEmpty())
          && (continueAs.getData() == null || continueAs.getData().isEmpty())
          && continueAs.getWorkflowExecTimeout() == null) {
        gen.writeString(continueAs.getWorkflowId());
      } else {
        gen.writeStartObject();

        if (continueAs.getWorkflowId() != null && continueAs.getWorkflowId().length() > 0) {
          gen.writeStringField("workflowId", continueAs.getWorkflowId());
        }

        if (continueAs.getVersion() != null && continueAs.getVersion().length() > 0) {
          gen.writeStringField("version", continueAs.getVersion());
        }

        if (continueAs.getData() != null && continueAs.getData().length() > 0) {
          gen.writeStringField("data", continueAs.getData());
        }

        if (continueAs.getWorkflowExecTimeout() != null) {
          gen.writeObjectField("workflowExecTimeout", continueAs.getWorkflowExecTimeout());
        }

        gen.writeEndObject();
      }
    }
  }
}