net.anthavio.httl.marshall.Jackson1Unmarshaller Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of hatatitla Show documentation

Compact but tweakable REST client library you have been dreaming of

The newest version!

package net.anthavio.httl.marshall;

import java.io.IOException;
import java.lang.reflect.Type;

import net.anthavio.httl.HttlBodyUnmarshaller.ConfigurableUnmarshaller;
import net.anthavio.httl.HttlResponse;

import org.codehaus.jackson.map.ObjectMapper;
import org.codehaus.jackson.type.JavaType;

/**
 * JSON -> Java 
 * Jackson 1 library based Unmarshaller
 * 
 * httpSender.extract(new GetRequest("/my_entity.json"), new JsonResponseExtractor(MyEntity.class));
 * 
 * @author martin.vanek
 *
 */
public class Jackson1Unmarshaller extends ConfigurableUnmarshaller {

	private final ObjectMapper mapper;

	public Jackson1Unmarshaller() {
		this(Jackson1Util.build());
	}

	public Jackson1Unmarshaller(ObjectMapper mapper) {
		this(mapper, "application/json");
	}

	public Jackson1Unmarshaller(ObjectMapper mapper, String mediaType) {
		this(mapper, mediaType, 200, 299);
	}

	public Jackson1Unmarshaller(ObjectMapper mapper, String mediaType, int minHttpStatus, int maxHttpStatus) {
		super(mediaType, minHttpStatus, maxHttpStatus);
		if (mapper == null) {
			throw new IllegalArgumentException("ObjectMapper is null");
		}
		this.mapper = mapper;
	}

	public ObjectMapper getObjectMapper() {
		return mapper;
	}

	@Override
	public Object doUnmarshall(HttlResponse response, Type resultType) throws IOException {
		JavaType javaType = mapper.constructType(resultType); //TODO cache JavaType
		return mapper.reader(javaType).readValue(response.getReader());
	}

	@Override
	public String toString() {
		return getClass().getSimpleName() + " [mapper=" + mapper + "]";
	}

}