com.sun.xml.ws.client.sei.ValueSetter Maven / Gradle / Ivy

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

import com.sun.xml.ws.api.model.Parameter;
import com.sun.xml.ws.model.ParameterImpl;
import com.sun.xml.ws.spi.db.PropertyAccessor;

import javax.xml.ws.Holder;
import javax.xml.ws.WebServiceException;
import javax.xml.namespace.QName;
import javax.xml.bind.JAXBException;

/**
 * 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 ValueSetter} is a stateless behavior encapsulation.
 *
 * @author Kohsuke Kawaguchi
 */
public abstract class ValueSetter {
    private ValueSetter() {}

    /**
     * Moves the value to the expected place.
     *
     * @param obj
     *      The unmarshalled object.
     * @param args
     *      The arguments 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.
     *
     * @return
     *      if obj is supposed to be returned as a return value
     *      from the method, this method returns obj. Otherwise null.
     */
    abstract Object put(Object obj, Object[] args);

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

    static {
        for( int i=0; i