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package com.sun.jersey.spi.inject;

import com.sun.jersey.core.spi.component.ComponentContext;
import com.sun.jersey.core.spi.component.ComponentScope;
import java.lang.annotation.Annotation;
import java.util.List;

/**
 * The context to obtain {@link Injectable} instances.
 * 
 * @author [email protected]
 */
public interface InjectableProviderContext {

    /**
     * Check if an annotation and context type is registered for injection.
     *
     * @param ac the annotation class.
     * @param cc the context type.
     * @return true if registered, otherwise false
     */
    public boolean isAnnotationRegistered(Class ac,
            Class cc);

    /*
     * Check if one or more injectable provider is registered to process an
     * annotation and a context type for a given scope.
     * 
     * @param ac the annotation class.
     * @param cc the context type.
     * @param s the scope.
     * @return true if one or more injectable provider is registered,
     *         otherwise false.
     */
    boolean isInjectableProviderRegistered(Class ac,
            Class cc,
            ComponentScope s);

    /**
     * Get an injectable.
     * 
     * @param  the type of the annotation.
     * @param  the context type. Types of the {@link java.lang.reflect.Type} and 
     *        {@link com.sun.jersey.api.model.Parameter} are the only types that
     *        are supported.
     * @param ac the annotation class.
     * @param ic the injectable context.
     * @param a the annotation instance.
     * @param c the context type.
     * @param s the scope.
     * @return the injectable, otherwise null if an injectable could 
     *         not be found.
     */
     Injectable getInjectable(
            Class ac,             
            ComponentContext ic,
            A a,
            C c,
            ComponentScope s);
    
    /**
     * Get an injectable.
     * 
     * @param  the type of the annotation.
     * @param  the context type. Types of the {@link java.lang.reflect.Type} and 
     *        {@link com.sun.jersey.api.model.Parameter} are the only types that
     *        are supported.
     * @param ac the annotation class.
     * @param ic the injectable context.
     * @param a the annotation instance.
     * @param c the context type.
     * @param ls the list of scope, ordered by preference.
     * @return the injectable, otherwise null if an injectable could 
     *         not be found.
     */
     Injectable getInjectable(
            Class ac,             
            ComponentContext ic,
            A a,
            C c,
            List ls);

    public static final class InjectableScopePair {
        public final Injectable i;
        public final ComponentScope cs;

        public InjectableScopePair(Injectable i, ComponentScope cs) {
            this.i = i;
            this.cs = cs;
        }
    }
    
    /**
     * Get an injectable.
     *
     * @param  the type of the annotation.
     * @param  the context type. Types of the {@link java.lang.reflect.Type} and
     *        {@link com.sun.jersey.api.model.Parameter} are the only types that
     *        are supported.
     * @param ac the annotation class.
     * @param ic the injectable context.
     * @param a the annotation instance.
     * @param c the context type.
     * @param ls the list of scope, ordered by preference.
     * @return the injectable and scope, otherwise null if an injectable could
     *         not be found.
     */
     InjectableScopePair getInjectableWithScope(
            Class ac,
            ComponentContext ic,
            A a,
            C c,
            List ls);
}