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package com.sun.jersey.server.impl.model.method.dispatch;
import com.sun.jersey.api.core.HttpContext;
import com.sun.jersey.api.model.AbstractResourceMethod;
import com.sun.jersey.api.model.Parameter;
import com.sun.jersey.server.impl.inject.AbstractHttpContextInjectable;
import com.sun.jersey.spi.inject.Injectable;
import com.sun.jersey.core.spi.component.ComponentScope;
import com.sun.jersey.server.impl.inject.InjectableValuesProvider;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
/**
*
* @author Paul.Sandoz@Sun.Com
*/
public class EntityParamDispatchProvider extends AbstractResourceMethodDispatchProvider {
@Override
protected InjectableValuesProvider getInjectableValuesProvider(AbstractResourceMethod abstractResourceMethod) {
return new InjectableValuesProvider(processParameters(abstractResourceMethod));
}
private List<Injectable> processParameters(AbstractResourceMethod method) {
if ((null == method.getParameters()) || (0 == method.getParameters().size())) {
return Collections.emptyList();
}
boolean hasEntity = false;
final List<Injectable> is = new ArrayList<Injectable>(method.getParameters().size());
for (int i = 0; i < method.getParameters().size(); i++) {
final Parameter parameter = method.getParameters().get(i);
if (Parameter.Source.ENTITY == parameter.getSource()) {
hasEntity = true;
is.add(processEntityParameter(
parameter,
method.getMethod().getParameterAnnotations()[i]));
} else {
is.add(getInjectableProviderContext().
getInjectable(method.getMethod(), parameter, ComponentScope.PerRequest));
}
}
if (hasEntity)
return is;
// Try to find entity if there is one unresolved parameter and
// the annotations are unknown
if (Collections.frequency(is, null) == 1) {
final int i = is.lastIndexOf(null);
final Parameter parameter = method.getParameters().get(i);
if (Parameter.Source.UNKNOWN == parameter.getSource()) {
if (!parameter.isQualified()) {
final Injectable ij = processEntityParameter(
parameter,
method.getMethod().getParameterAnnotations()[i]);
is.set(i, ij);
}
}
}
return is;
}
static final class EntityInjectable extends AbstractHttpContextInjectable<Object> {
final Class<?> c;
final Type t;
final Annotation[] as;
EntityInjectable(Class c, Type t, Annotation[] as) {
this.c = c;
this.t = t;
this.as = as;
}
@Override
public Object getValue(HttpContext context) {
return context.getRequest().getEntity(c, t, as);
}
}
private Injectable processEntityParameter(
Parameter parameter,
Annotation[] annotations) {
return new EntityInjectable(parameter.getParameterClass(),
parameter.getParameterType(), annotations);
}
}