package org.jboss.resteasy.util;
import org.jboss.resteasy.plugins.delegates.MediaTypeHeaderDelegate;
import org.jboss.resteasy.spi.LoggableFailure;
import javax.ws.rs.core.MediaType;
import java.util.HashMap;
import java.util.Map;
/**
* @author <a href="mailto:bill@burkecentral.com">Bill Burke</a>
* @version $Revision: 1 $
*/
public class WeightedMediaType extends MediaType implements Comparable<WeightedMediaType>
{
private float weight = 1.0f;
private WeightedMediaType(String type, String subtype, Map<String, String> parameters)
{
super(type, subtype, parameters);
}
public float getWeight()
{
return weight;
}
public int compareTo(WeightedMediaType o)
{
WeightedMediaType type2 = this;
WeightedMediaType type1 = o;
if (type1.weight < type2.weight) return -1;
if (type1.weight > type2.weight) return 1;
if (type1.isWildcardType() && !type2.isWildcardType()) return -1;
if (!type1.isWildcardType() && type2.isWildcardType()) return 1;
if (type1.isWildcardSubtype() && !type2.isWildcardSubtype()) return -1;
if (!type1.isWildcardSubtype() && type2.isWildcardSubtype()) return 1;
int numNonQ = 0;
if (type1.getParameters() != null)
{
numNonQ = type1.getParameters().size();
}
int numNonQ2 = 0;
if (type2.getParameters() != null)
{
numNonQ2 = type2.getParameters().size();
}
if (numNonQ < numNonQ2) return -1;
if (numNonQ > numNonQ2) return 1;
return 0;
}
/**
* Non-equal properties should not be compatible
*/
@Override
public boolean isCompatible(MediaType other)
{
boolean result;
if (other == null)
result = false;
if (getType().equals(MEDIA_TYPE_WILDCARD) || other.getType().equals(MEDIA_TYPE_WILDCARD))
result = true;
else if (getType().equalsIgnoreCase(other.getType()) && (getSubtype().equals(MEDIA_TYPE_WILDCARD) || other.getSubtype().equals(MEDIA_TYPE_WILDCARD)))
result = true;
else
{
if (getType().equalsIgnoreCase(other.getType())
&& this.getSubtype().equalsIgnoreCase(other.getSubtype()))
{
if (getParameters() == null || getParameters().size() == 0)
{
result = true;
}
else
{
result = this.equals(other);
}
}
else
{
result = false;
}
}
return result;
}
public static WeightedMediaType valueOf(String type)
{
MediaType tmp = MediaTypeHeaderDelegate.parse(type);
if (tmp.getParameters() == null || !tmp.getParameters().containsKey("q"))
{
return new WeightedMediaType(tmp.getType(), tmp.getSubtype(), tmp.getParameters());
}
HashMap<String, String> params = new HashMap<String, String>();
params.putAll(tmp.getParameters());
String q = params.remove("q");
WeightedMediaType mediaType = new WeightedMediaType(tmp.getType(), tmp.getSubtype(), params);
mediaType.weight = getQWithParamInfo(mediaType, q);
return mediaType;
}
public static WeightedMediaType parse(MediaType tmp)
{
if (tmp.getParameters() == null || !tmp.getParameters().containsKey("q"))
{
return new WeightedMediaType(tmp.getType(), tmp.getSubtype(), tmp.getParameters());
}
HashMap<String, String> params = new HashMap<String, String>();
params.putAll(tmp.getParameters());
String q = params.remove("q");
WeightedMediaType mediaType = new WeightedMediaType(tmp.getType(), tmp.getSubtype(), params);
mediaType.weight = getQWithParamInfo(mediaType, q);
return mediaType;
}
private static float getQWithParamInfo(MediaType type, String val)
{
try
{
if (val != null)
{
float rtn = Float.valueOf(val);
if (rtn > 1.0F)
throw new LoggableFailure("MediaType q value cannot be greater than 1.0: " + type.toString(), HttpResponseCodes.SC_BAD_REQUEST);
return rtn;
}
}
catch (NumberFormatException e)
{
throw new RuntimeException("MediaType q parameter must be a float: " + type, e);
}
return 1.0f;
}
@Override
public boolean equals(Object obj)
{
return super.equals(obj);
}
}