springfox.documentation.schema.property.PojoPropertyBuilderFactory.java Source code

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Here is the source code for springfox.documentation.schema.property.PojoPropertyBuilderFactory.java

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/*
 *
 *  Copyright 2015 the original author or 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 springfox.documentation.schema.property;

import com.fasterxml.jackson.databind.AnnotationIntrospector;
import com.fasterxml.jackson.databind.PropertyName;
import com.fasterxml.jackson.databind.SerializationConfig;
import com.fasterxml.jackson.databind.cfg.MapperConfig;
import com.fasterxml.jackson.databind.introspect.BeanPropertyDefinition;
import com.fasterxml.jackson.databind.introspect.POJOPropertyBuilder;
import com.google.common.base.Optional;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.lang.reflect.Constructor;

class PojoPropertyBuilderFactory {
    private static final Logger LOG = LoggerFactory.getLogger(POJOPropertyBuilder.class);

    POJOPropertyBuilder create(MapperConfig<?> config, BeanPropertyDefinition beanProperty) {
        AnnotationIntrospector annotationIntrospector = config.isAnnotationProcessingEnabled()
                ? config.getAnnotationIntrospector()
                : null;
        boolean forSerialization = config instanceof SerializationConfig;
        Optional<POJOPropertyBuilder> instance = jackson26Instance(beanProperty, annotationIntrospector,
                forSerialization);
        if (!instance.isPresent()) {
            return jackson27Instance(config, beanProperty, annotationIntrospector, forSerialization);
        }
        return instance.get();
    }

    /**
     * Applies to constructor
        new POJOPropertyBuilder(
    config,
    annotationIntrospector,
    forSerialization,
    new PropertyName(beanProperty.getName()))
     */
    private POJOPropertyBuilder jackson27Instance(MapperConfig<?> config, BeanPropertyDefinition beanProperty,
            AnnotationIntrospector annotationIntrospector, boolean forSerialization) {
        try {
            Constructor<POJOPropertyBuilder> constructor = constructorWithParams(MapperConfig.class,
                    AnnotationIntrospector.class, Boolean.TYPE, PropertyName.class);

            return constructor.newInstance(config, annotationIntrospector, forSerialization,
                    new PropertyName(beanProperty.getName()));
        } catch (Exception e) {
            throw new InstantiationError("Unable to create an instance of POJOPropertyBuilder");
        }
    }

    /**
     * Applies to constructor
       new POJOPropertyBuilder(new PropertyName(beanProperty.getName()),  annotationIntrospector,  true);
     */
    private Optional<POJOPropertyBuilder> jackson26Instance(BeanPropertyDefinition beanProperty,
            AnnotationIntrospector annotationIntrospector, boolean forSerialization) {
        try {
            Constructor<POJOPropertyBuilder> constructor = constructorWithParams(PropertyName.class,
                    AnnotationIntrospector.class, Boolean.TYPE);

            return Optional.of(constructor.newInstance(new PropertyName(beanProperty.getName()),
                    annotationIntrospector, forSerialization));
        } catch (Exception e) {
            LOG.debug("Unable to instantiate jackson 26 object", e);
        }
        return Optional.absent();
    }

    private Constructor<POJOPropertyBuilder> constructorWithParams(Class<?>... clazzes)
            throws NoSuchMethodException {
        return POJOPropertyBuilder.class.getConstructor(clazzes);
    }

}