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package com.sun.xml.ws.server.sei;

import com.sun.xml.ws.api.model.Parameter;
import com.sun.xml.ws.model.ParameterImpl;

import javax.xml.ws.Holder;

/**
 * Moves a Java value unmarshalled from a response message
 * to the right place.
 *
 * 
 * Sometimes values are returned as a return value, and
 * others are returned in the {@link Holder} value. Instances
 * of this interface abstracts this detail.
 *
 * 

 * {@link EndpointValueSetter} is a stateless behavior encapsulation.
 *
 * @author Jitendra Kotamraju
 */
public abstract class EndpointValueSetter {
    private EndpointValueSetter() {}

    /**
     * Moves the value to the expected place.
     *
     * @param obj
     *      The unmarshalled object.
     * @param args
     *      The arguments that need to be given to the Java method invocation. If obj
     *      is supposed to be returned as a {@link Holder} value, a suitable
     *      {@link Holder} is obtained from this argument list and obj
     *      is set.
     *
     */
    abstract void put(Object obj, Object[] args);

    /**
     * {@link Param}s with small index numbers are used often,
     * so we pool them to reduce the footprint.
     */
    private static final EndpointValueSetter[] POOL = new EndpointValueSetter[16];

    static {
        for( int i=0; i