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/*
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can obtain
* a copy of the License at https://jersey.dev.java.net/CDDL+GPL.html
* or jersey/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at jersey/legal/LICENSE.txt.
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* as provided by Sun in the GPL Version 2 section of the License file that
* accompanied this code. If applicable, add the following below the License
* Header, with the fields enclosed by brackets [] replaced by your own
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* and therefore, elected the GPL Version 2 license, then the option applies
* only if the new code is made subject to such option by the copyright
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*/
package com.sun.jersey.server.impl.container.servlet;
import com.sun.jersey.api.container.ContainerException;
import com.sun.jersey.api.container.MappableContainerException;
import com.sun.jersey.api.core.HttpContext;
import com.sun.jersey.api.model.AbstractResource;
import com.sun.jersey.core.spi.component.ComponentScope;
import com.sun.jersey.core.spi.component.ioc.IoCInstantiatedComponentProvider;
import com.sun.jersey.core.spi.component.ioc.IoCProxiedComponentProvider;
import com.sun.jersey.core.spi.component.ioc.IoCComponentProvider;
import com.sun.jersey.core.spi.component.ioc.IoCDestroyable;
import com.sun.jersey.server.impl.inject.ServerInjectableProviderContext;
import com.sun.jersey.server.spi.component.ResourceComponentConstructor;
import com.sun.jersey.server.spi.component.ResourceComponentDestructor;
import com.sun.jersey.server.spi.component.ResourceComponentInjector;
import com.sun.jersey.server.spi.component.ResourceComponentProvider;
import com.sun.jersey.server.spi.component.ResourceComponentProviderFactory;
import java.lang.reflect.InvocationTargetException;
import java.util.HashMap;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import javax.servlet.http.HttpSessionBindingEvent;
import javax.servlet.http.HttpSessionBindingListener;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.Context;
/**
* A provider that maintains a per session resource class instance
*/
public final class PerSessionFactory implements ResourceComponentProviderFactory {
private final ServerInjectableProviderContext sipc;
private final HttpServletRequest hsr;
private final HttpContext threadLocalHc;
public PerSessionFactory(
@Context ServerInjectableProviderContext sipc,
@Context HttpServletRequest hsr,
@Context HttpContext threadLocalHc) {
this.hsr = hsr;
this.sipc = sipc;
this.threadLocalHc = threadLocalHc;
}
public ComponentScope getScope(Class c) {
return ComponentScope.Undefined;
}
public ResourceComponentProvider getComponentProvider(Class c) {
return new PerSesson();
}
public ResourceComponentProvider getComponentProvider(IoCComponentProvider icp, Class c) {
if (icp instanceof IoCInstantiatedComponentProvider) {
return new PerSessonInstantiated((IoCInstantiatedComponentProvider)icp);
} else if (icp instanceof IoCProxiedComponentProvider) {
return new PerSessonProxied((IoCProxiedComponentProvider)icp);
}
throw new IllegalStateException();
}
private static class ProviderObjectPair {
private final AbstractPerSession s;
private final Object o;
public ProviderObjectPair(AbstractPerSession s, Object o) {
this.s = s;
this.o = o;
}
}
private static class SessionMap extends HashMap
implements HttpSessionBindingListener {
public void valueBound(HttpSessionBindingEvent hsbe) {
}
public void valueUnbound(HttpSessionBindingEvent hsbe) {
for (ProviderObjectPair x : values()) {
x.s.destroy(x.o);
}
}
}
private abstract class AbstractPerSession implements ResourceComponentProvider {
private static final String SCOPE_PER_SESSION = "com.sun.jersey.scope.PerSession";
private ResourceComponentDestructor rcd;
private Class c;
public void init(AbstractResource abstractResource) {
this.rcd = new ResourceComponentDestructor(abstractResource);
this.c = abstractResource.getResourceClass();
}
public final Object getInstance() {
return getInstance(threadLocalHc);
}
public final ComponentScope getScope() {
return ComponentScope.Undefined;
}
public final Object getInstance(HttpContext hc) {
HttpSession hs = hsr.getSession();
synchronized(hs) {
SessionMap sm = (SessionMap)hs.getAttribute(SCOPE_PER_SESSION);
if (sm == null) {
sm = new SessionMap();
hs.setAttribute(SCOPE_PER_SESSION, sm);
}
ProviderObjectPair x = sm.get(c.getName());
if (x != null)
return x.o;
Object o = _getInstance(hc);
sm.put(c.getName(), new ProviderObjectPair(this, o));
return o;
}
}
protected abstract Object _getInstance(HttpContext hc);
public final void destroy() {
}
public void destroy(Object o) {
try {
rcd.destroy(o);
} catch (IllegalAccessException ex) {
throw new ContainerException("Unable to destroy resource", ex);
} catch (InvocationTargetException ex) {
throw new ContainerException("Unable to destroy resource", ex);
} catch (RuntimeException ex) {
throw new ContainerException("Unable to destroy resource", ex);
}
}
}
private final class PerSesson extends AbstractPerSession {
private ResourceComponentConstructor rcc;
@Override
public void init(AbstractResource abstractResource) {
super.init(abstractResource);
this.rcc = new ResourceComponentConstructor(
sipc,
ComponentScope.Undefined,
abstractResource);
}
protected Object _getInstance(HttpContext hc) {
try {
return rcc.construct(hc);
} catch (InstantiationException ex) {
throw new ContainerException("Unable to create resource", ex);
} catch (IllegalAccessException ex) {
throw new ContainerException("Unable to create resource", ex);
} catch (InvocationTargetException ex) {
// Propagate the target exception so it may be mapped to a response
throw new MappableContainerException(ex.getTargetException());
} catch (WebApplicationException ex) {
throw ex;
} catch (RuntimeException ex) {
throw new ContainerException("Unable to create resource", ex);
}
}
}
private final class PerSessonInstantiated extends AbstractPerSession {
private final IoCInstantiatedComponentProvider iicp;
private final IoCDestroyable destroyable;
private ResourceComponentInjector rci;
PerSessonInstantiated(IoCInstantiatedComponentProvider iicp) {
this.iicp = iicp;
this.destroyable = (iicp instanceof IoCDestroyable)
? (IoCDestroyable) iicp : null;
}
@Override
public void init(AbstractResource abstractResource) {
super.init(abstractResource);
if (destroyable == null) {
this.rci = new ResourceComponentInjector(
sipc,
ComponentScope.Undefined,
abstractResource);
}
}
protected Object _getInstance(HttpContext hc) {
Object o = iicp.getInstance();
if (destroyable == null) {
rci.inject(hc, iicp.getInjectableInstance(o));
}
return o;
}
@Override
public void destroy(Object o) {
if (destroyable != null) {
destroyable.destroy(o);
} else {
super.destroy(o);
}
}
}
private final class PerSessonProxied extends AbstractPerSession {
private final IoCProxiedComponentProvider ipcp;
private ResourceComponentConstructor rcc;
PerSessonProxied(IoCProxiedComponentProvider ipcp) {
this.ipcp = ipcp;
}
@Override
public void init(AbstractResource abstractResource) {
super.init(abstractResource);
this.rcc = new ResourceComponentConstructor(
sipc,
ComponentScope.Undefined,
abstractResource);
}
protected Object _getInstance(HttpContext hc) {
try {
return ipcp.proxy(rcc.construct(hc));
} catch (InstantiationException ex) {
throw new ContainerException("Unable to create resource", ex);
} catch (IllegalAccessException ex) {
throw new ContainerException("Unable to create resource", ex);
} catch (InvocationTargetException ex) {
// Propagate the target exception so it may be mapped to a response
throw new MappableContainerException(ex.getTargetException());
} catch (WebApplicationException ex) {
throw ex;
} catch (RuntimeException ex) {
throw new ContainerException("Unable to create resource", ex);
}
}
}
}
