com.hubspot.jinjava.objects.serialization.PyishBeanSerializerModifier Maven / Gradle / Ivy

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Jinja templating engine implemented in Java

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package com.hubspot.jinjava.objects.serialization;

import com.fasterxml.jackson.databind.BeanDescription;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.SerializationConfig;
import com.fasterxml.jackson.databind.ser.BeanSerializer;
import com.fasterxml.jackson.databind.ser.BeanSerializerModifier;
import com.google.common.annotations.Beta;
import java.util.Map;

@Beta
public class PyishBeanSerializerModifier extends BeanSerializerModifier {

  public static final PyishBeanSerializerModifier INSTANCE =
    new PyishBeanSerializerModifier();

  private PyishBeanSerializerModifier() {}

  @Override
  public JsonSerializer modifySerializer(
    SerializationConfig config,
    BeanDescription beanDesc,
    JsonSerializer serializer
  ) {
    // Use the PyishSerializer if it extends the PyishSerializable class.
    // For example, a Map implementation could then have custom string serialization.
    if (!(PyishSerializable.class.isAssignableFrom(beanDesc.getBeanClass()))) {
      if (Map.Entry.class.isAssignableFrom(beanDesc.getBeanClass())) {
        return MapEntrySerializer.INSTANCE;
      }
      if (serializer instanceof BeanSerializer) {
        return BothCasingBeanSerializer.wrapping(serializer);
      }
      return serializer;
    } else {
      return PyishSerializer.INSTANCE;
    }
  }
}