com.oracle.webservices.api.message.BaseDistributedPropertySet Maven / Gradle / Ivy
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/*
* Copyright (c) 1997, 2018 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Distribution License v. 1.0, which is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
package com.oracle.webservices.api.message;
import com.sun.istack.NotNull;
import com.sun.istack.Nullable;
import com.sun.xml.ws.api.message.Packet;
import com.sun.xml.ws.client.RequestContext;
import com.sun.xml.ws.client.ResponseContext;
import javax.xml.ws.WebServiceContext;
import java.util.AbstractMap;
import java.util.Map.Entry;
import java.util.HashSet;
import java.util.IdentityHashMap;
import java.util.Map;
import java.util.Set;
/**
* {@link PropertySet} that combines properties exposed from multiple
* {@link PropertySet}s into one.
*
*
* This implementation allows one {@link PropertySet} to assemble
* all properties exposed from other "satellite" {@link PropertySet}s.
* (A satellite may itself be a {@link DistributedPropertySet}, so
* in general this can form a tree.)
*
*
* This is useful for JAX-WS because the properties we expose to the application
* are contributed by different pieces, and therefore we'd like each of them
* to have a separate {@link PropertySet} implementation that backs up
* the properties. For example, this allows FastInfoset to expose its
* set of properties to {@link RequestContext} by using a strongly-typed fields.
*
*
* This is also useful for a client-side transport to expose a bunch of properties
* into {@link ResponseContext}. It simply needs to create a {@link PropertySet}
* object with methods for each property it wants to expose, and then add that
* {@link PropertySet} to {@link Packet}. This allows property values to be
* lazily computed (when actually asked by users), thus improving the performance
* of the typical case where property values are not asked.
*
*
* A similar benefit applies on the server-side, for a transport to expose
* a bunch of properties to {@link WebServiceContext}.
*
*
* To achieve these benefits, access to {@link DistributedPropertySet} is slower
* compared to {@link PropertySet} (such as get/set), while adding a satellite
* object is relatively fast.
*
* @author Kohsuke Kawaguchi
*/
public abstract class BaseDistributedPropertySet extends BasePropertySet implements DistributedPropertySet {
/**
* All {@link PropertySet}s that are bundled into this {@link PropertySet}.
*/
private final Map, PropertySet> satellites
= new IdentityHashMap, PropertySet>();
private final Map viewthis;
public BaseDistributedPropertySet() {
this.viewthis = super.createView();
}
@Override
public void addSatellite(@NotNull PropertySet satellite) {
addSatellite(satellite.getClass(), satellite);
}
@Override
public void addSatellite(@NotNull Class keyClass, @NotNull PropertySet satellite) {
satellites.put(keyClass, satellite);
}
@Override
public void removeSatellite(PropertySet satellite) {
satellites.remove(satellite.getClass());
}
public void copySatelliteInto(@NotNull DistributedPropertySet r) {
for (Map.Entry, PropertySet> entry : satellites.entrySet()) {
r.addSatellite(entry.getKey(), entry.getValue());
}
}
@Override
public void copySatelliteInto(MessageContext r) {
copySatelliteInto((DistributedPropertySet)r);
}
@Override
public @Nullable T getSatellite(Class satelliteClass) {
T satellite = (T) satellites.get(satelliteClass);
if (satellite != null) {
return satellite;
}
for (PropertySet child : satellites.values()) {
if (satelliteClass.isInstance(child)) {
return satelliteClass.cast(child);
}
if (DistributedPropertySet.class.isInstance(child)) {
satellite = DistributedPropertySet.class.cast(child).getSatellite(satelliteClass);
if (satellite != null) {
return satellite;
}
}
}
return null;
}
@Override
public Map, com.oracle.webservices.api.message.PropertySet> getSatellites() {
return satellites;
}
@Override
public Object get(Object key) {
// check satellites
for (PropertySet child : satellites.values()) {
if (child.supports(key)) {
return child.get(key);
}
}
// otherwise it must be the master
return super.get(key);
}
@Override
public Object put(String key, Object value) {
// check satellites
for (PropertySet child : satellites.values()) {
if(child.supports(key)) {
return child.put(key,value);
}
}
// otherwise it must be the master
return super.put(key,value);
}
@Override
public boolean containsKey(Object key) {
if (viewthis.containsKey(key))
return true;
for (PropertySet child : satellites.values()) {
if (child.containsKey(key)) {
return true;
}
}
return false;
}
@Override
public boolean supports(Object key) {
// check satellites
for (PropertySet child : satellites.values()) {
if (child.supports(key)) {
return true;
}
}
return super.supports(key);
}
@Override
public Object remove(Object key) {
// check satellites
for (PropertySet child : satellites.values()) {
if (child.supports(key)) {
return child.remove(key);
}
}
return super.remove(key);
}
@Override
protected void createEntrySet(Set> core) {
super.createEntrySet(core);
for (PropertySet child : satellites.values()) {
((BasePropertySet) child).createEntrySet(core);
}
}
protected Map asMapLocal() {
return viewthis;
}
protected boolean supportsLocal(Object key) {
return super.supports(key);
}
class DistributedMapView extends AbstractMap {
@Override
public Object get(Object key) {
for (PropertySet child : satellites.values()) {
if (child.supports(key)) {
return child.get(key);
}
}
return viewthis.get(key);
}
@Override
public int size() {
int size = viewthis.size();
for (PropertySet child : satellites.values()) {
size += child.asMap().size();
}
return size;
}
@Override
public boolean containsKey(Object key) {
if (viewthis.containsKey(key))
return true;
for (PropertySet child : satellites.values()) {
if (child.asMap().containsKey(key))
return true;
}
return false;
}
@Override
public Set> entrySet() {
Set> entries = new HashSet>();
for (PropertySet child : satellites.values()) {
for (Entry entry : child.asMap().entrySet()) {
// the code below is here to avoid entries.addAll(child.asMap().entrySet()); which works differently on JDK6/7
// see DMI_ENTRY_SETS_MAY_REUSE_ENTRY_OBJECTS
entries.add(new SimpleImmutableEntry(entry.getKey(), entry.getValue()));
}
}
for (Entry entry : viewthis.entrySet()) {
// the code below is here to avoid entries.addAll(child.asMap().entrySet()); which works differently on JDK6/7
// see DMI_ENTRY_SETS_MAY_REUSE_ENTRY_OBJECTS
entries.add(new SimpleImmutableEntry(entry.getKey(), entry.getValue()));
}
return entries;
}
@Override
public Object put(String key, Object value) {
for (PropertySet child : satellites.values()) {
if (child.supports(key)) {
return child.put(key, value);
}
}
return viewthis.put(key, value);
}
@Override
public void clear() {
satellites.clear();
viewthis.clear();
}
@Override
public Object remove(Object key) {
for (PropertySet child : satellites.values()) {
if (child.supports(key)) {
return child.remove(key);
}
}
return viewthis.remove(key);
}
}
@Override
protected Map createView() {
return new DistributedMapView();
}
}