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package com.sun.ejb.containers;
import java.rmi.RemoteException;
import java.lang.reflect.Method;
import javax.ejb.*;
import com.sun.ejb.*;
import com.sun.enterprise.*;
/**
* Implementation of EJBContext for EntityBeans
*
*/
public class EntityContextImpl
extends EJBContextImpl
implements EntityContext
{
private int lastTxStatus=-1;
private boolean newlyActivated = false;
private int nCallsInProgress = 0;
private boolean dirty = false;
private boolean inUnsetEntityContext = false;
private boolean inEjbLoad = false;
private boolean inEjbStore = false;
private boolean cascadeDeleteBeforeEJBRemove = false;
private boolean cascadeDeleteAfterSuperEJBRemove = false;
//The following member variables are used to directly cache
// the EntityContext instead of enclosing it within a wrapper class.
private Object _primaryKey;
private int _pkHashCode;
private EntityContextImpl _next;
EntityContextImpl(Object ejb, BaseContainer container) {
super(ejb, container);
}
int getLastTransactionStatus() {
return lastTxStatus;
}
void setLastTransactionStatus(int status) {
lastTxStatus = status;
}
void setInUnsetEntityContext(boolean flag) {
inUnsetEntityContext = flag;
}
void setInEjbLoad(boolean flag) {
inEjbLoad = flag;
}
void setInEjbStore(boolean flag) {
inEjbStore = flag;
}
boolean isDirty() {
return dirty;
}
void setDirty(boolean b) {
dirty = b;
}
// overrides EJBContextImpl.setState
void setState(int s) {
state = s;
if ( state == EntityContainer.POOLED ||
state == EntityContainer.DESTROYED )
{
dirty = false;
}
}
boolean isNewlyActivated() {
return newlyActivated;
}
void setNewlyActivated(boolean b) {
newlyActivated = b;
}
boolean hasReentrantCall() {
return (nCallsInProgress > 1);
}
synchronized void decrementCalls() {
nCallsInProgress--;
}
synchronized void incrementCalls() {
nCallsInProgress++;
}
boolean hasIdentity() {
return( (ejbObjectImpl != null) || (ejbLocalObjectImpl != null) );
}
/**
* Implementation of EntityContext method.
*/
public Object getPrimaryKey() throws IllegalStateException {
if ( ejbObjectImpl == null && ejbLocalObjectImpl == null ) {
// There is no ejbObjectImpl/localObject in ejbCreate, ejbFind,
// setEntityCtx etc
throw new IllegalStateException("Primary key not available");
}
if ( ejbLocalObjectImpl != null )
return ejbLocalObjectImpl.getKey();
else
return ejbObjectImpl.getKey();
}
/**
* Implementation of EntityContext method, overrides EJBContextImpl method.
*/
public EJBObject getEJBObject()
throws IllegalStateException
{
if (! isRemoteInterfaceSupported) {
throw new IllegalStateException("EJBObject not available");
}
if ( ejbStub == null ) {
Object pkey = getPrimaryKey(); // throws IllegalStateException
ejbStub = ((EntityContainer) container).getEJBObjectStub(pkey, null);
}
return ejbStub;
}
public TimerService getTimerService() throws IllegalStateException {
if( state == NOT_INITIALIZED || inUnsetEntityContext || inFinder() ) {
throw new IllegalStateException("Operation not allowed");
}
ContainerFactoryImpl cf = (ContainerFactoryImpl)
Switch.getSwitch().getContainerFactory();
EJBTimerService timerService = cf.getEJBTimerService();
if( timerService == null ) {
throw new EJBException("EJB Timer service not available");
}
return new EJBTimerServiceWrapper(timerService,
(EntityContextImpl) this);
}
protected void checkAccessToCallerSecurity()
throws IllegalStateException
{
if( state == NOT_INITIALIZED || inUnsetEntityContext ) {
throw new IllegalStateException("Operation not allowed");
}
checkActivatePassivate();
if (inEjbLoad || inEjbStore) {
// Security access is allowed from these two methods. In the
// case that they are invoked as part of an ejbTimeout call,
// getCallerPrincipal will return null and isCallerInRole will
// be false
return;
}
}
public void checkTimerServiceMethodAccess()
throws IllegalStateException
{
// Prohibit access from constructor, setEntityContext, ejbCreate,
// ejbActivate, ejbPassivate, unsetEntityContext, ejbFind
if( (state == NOT_INITIALIZED) ||
inUnsetEntityContext ||
inFinder() ||
inActivatePassivate() ||
!hasIdentity() ) {
throw new IllegalStateException("Operation not allowed");
}
}
public final boolean isCascadeDeleteAfterSuperEJBRemove() {
return cascadeDeleteAfterSuperEJBRemove;
}
public final void setCascadeDeleteAfterSuperEJBRemove(boolean value) {
this.cascadeDeleteAfterSuperEJBRemove = value;
}
public final boolean isCascadeDeleteBeforeEJBRemove() {
return cascadeDeleteBeforeEJBRemove;
}
public final void setCascadeDeleteBeforeEJBRemove(boolean value) {
this.cascadeDeleteBeforeEJBRemove = value;
}
private boolean inFinder() {
boolean inFinder = false;
ComponentInvocation i =
container.invocationManager.getCurrentInvocation();
if ( i instanceof Invocation ) {
Invocation inv = (Invocation) i;
Method currentMethod = inv.method;
inFinder = ( (currentMethod != null) && inv.isHome &&
currentMethod.getName().startsWith("find") );
}
return inFinder;
}
//Called from EntityContainer after an ejb is obtained from the pool.
final void cachePrimaryKey() {
Object pk = getPrimaryKey();
this._primaryKey = pk;
this._pkHashCode = pk.hashCode();
}
final void clearCachedPrimaryKey() {
this._primaryKey = null;
}
//Called from IncompleteTxCache to get an already cached context
final boolean doesMatch(BaseContainer baseContainer, int pkHashCode, Object pk) {
return (
(container == baseContainer)
&& (_pkHashCode == pkHashCode)
&& (_primaryKey.equals(pk))
);
}
final void _setNext(EntityContextImpl val) {
this._next = val;
}
final EntityContextImpl _getNext() {
return _next;
}
final int _getPKHashCode() {
return this._pkHashCode;
}
}
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