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Using ValueEncoders with Resteasy

DZone's Guide to

Using ValueEncoders with Resteasy

· Java Zone
Free Resource

Learn how to troubleshoot and diagnose some of the most common performance issues in Java today. Brought to you in partnership with AppDynamics.

The power of Tapestry’s ValueEncoder can be used with RestEasy by implementing javax.ws.rs.ext.ParamConverterProvider

import org.apache.tapestry5.ValueEncoder;
import org.apache.tapestry5.services.ValueEncoderSource;
 
import javax.ws.rs.ext.ParamConverter;
import javax.ws.rs.ext.ParamConverterProvider;
import javax.ws.rs.ext.Provider;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
 
@Provider
public class ValueEncodersProvider implements ParamConverterProvider {
 
    private final ValueEncoderSource valueEncoderSource;
 
    public ValueEncodersProvider(ValueEncoderSource valueEncoderSource) {
        this.valueEncoderSource = valueEncoderSource;
    }
 
    @Override
    public <T> ParamConverter<T> getConverter(Class<T> rawType, Type genericType, Annotation[] annotations) {
        final ValueEncoder<T> encoder = valueEncoderSource.getValueEncoder(rawType);
        if (encoder == null) {
            return null;
        }
 
        return new ParamConverter<T>() {
            @Override
            public T fromString(String value) {
                return encoder.toValue(value);
            }
 
            @Override
            public String toString(T value) {
                return encoder.toClient(value);
            }
        };
    }
 
}



Understand the needs and benefits around implementing the right monitoring solution for a growing containerized market. Brought to you in partnership with AppDynamics.

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Published at DZone with permission of Taha Siddiqi, DZone MVB. See the original article here.

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