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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.
*
* <p>
* Sometimes values are returned as a return value, and
* others are returned in the {@link Holder} value. Instances
* of this interface abstracts this detail.
*
* <p>
* {@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 {@code obj} is supposed to be returned as a {@link Holder}
* value, a suitable {@link Holder} is obtained from
* this argument list and {@code 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<POOL.length; i++ )
POOL[i] = new Param(i);
}
/**
* Returns a {@link EndpointValueSetter} suitable for the given {@link Parameter}.
*/
public static EndpointValueSetter get(ParameterImpl p) {
int idx = p.getIndex();
if (p.isIN()) {
if (idx<POOL.length) {
return POOL[idx];
} else {
return new Param(idx);
}
} else {
return new HolderParam(idx);
}
}
static class Param extends EndpointValueSetter {
/**
* Index of the argument to put the value to.
*/
protected final int idx;
public Param(int idx) {
this.idx = idx;
}
void put(Object obj, Object[] args) {
if (obj != null) {
args[idx] = obj;
}
}
}
static final class HolderParam extends Param {
public HolderParam(int idx) {
super(idx);
}
@Override
void put(Object obj, Object[] args) {
Holder holder = new Holder();
if (obj != null) {
holder.value = obj;
}
args[idx] = holder;
}
}
}