org.glassfish.jersey.model.internal.RankedProvider Maven / Gradle / Ivy
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package org.glassfish.jersey.model.internal;
import javax.ws.rs.Priorities;
import javax.annotation.Priority;
import org.glassfish.jersey.model.ContractProvider;
/**
* Jersey ranked provider model.
*
* @param service provider contract Java type.
* @author Michal Gajdos (michal.gajdos at oracle.com)
*/
public class RankedProvider {
private final T provider;
private final int rank;
/**
* Creates a new {@code RankedProvider} instance. The rank of the provider is obtained from the {@link javax.annotation.Priority}
* annotation or is set to {@value javax.ws.rs.Priorities#USER} if the annotation is not present.
*
* @param provider service provider to create a {@code RankedProvider} instance from.
*/
public RankedProvider(final T provider) {
this.provider = provider;
this.rank = computeRank(provider, ContractProvider.NO_PRIORITY);
}
/**
* Creates a new {@code RankedProvider} instance for given {@code provider} with specific {@code rank} (> 0).
*
* @param provider service provider to create a {@code RankedProvider} instance from.
* @param rank rank of this provider.
*/
public RankedProvider(final T provider, final int rank) {
this.provider = provider;
this.rank = computeRank(provider, rank);
}
private int computeRank(final T provider, final int rank) {
if (rank > 0) {
return rank;
} else {
if (provider.getClass().isAnnotationPresent(Priority.class)) {
return provider.getClass().getAnnotation(Priority.class).value();
} else {
return Priorities.USER;
}
}
}
public T getProvider() {
return provider;
}
public int getRank() {
return rank;
}
@Override
public String toString() {
return provider.getClass().getName();
}
}