io.prestosql.jdbc.$internal.jackson.datatype.guava.ser.GuavaBeanSerializerModifier Maven / Gradle / Ivy

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package io.prestosql.jdbc.$internal.jackson.datatype.guava.ser;

import io.prestosql.jdbc.$internal.jackson.databind.BeanDescription;
import io.prestosql.jdbc.$internal.jackson.databind.SerializationConfig;
import io.prestosql.jdbc.$internal.jackson.databind.ser.BeanPropertyWriter;
import io.prestosql.jdbc.$internal.jackson.databind.ser.BeanSerializerModifier;
import io.prestosql.jdbc.$internal.guava.base.Optional;

import java.io.Serializable;
import java.util.List;

/**
 * {@link BeanSerializerModifier} needed to sneak in handler to exclude "absent"
 * optional values iff handling of "absent as nulls" is enabled.
 */
public class GuavaBeanSerializerModifier extends BeanSerializerModifier
    implements Serializable
{
    static final long serialVersionUID = 1L;
    @Override
    public List changeProperties(SerializationConfig config,
            BeanDescription beanDesc,
            List beanProperties)
    {
        for (int i = 0; i < beanProperties.size(); ++i) {
            final BeanPropertyWriter writer = beanProperties.get(i);
            if (Optional.class.isAssignableFrom(writer.getType().getRawClass())) {
                beanProperties.set(i, new GuavaOptionalBeanPropertyWriter(writer));
            }
        }
        return beanProperties;
    }
}