org.tentackle.pdo.DomainDelegateLinker Maven / Gradle / Ivy
/*
* Tentackle - https://tentackle.org
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package org.tentackle.pdo;
import org.tentackle.common.ServiceFactory;
import org.tentackle.common.TentackleRuntimeException;
import org.tentackle.log.Logger;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
interface DomainDelegateLinkerHolder {
static DomainDelegateLinker createLinker() {
try {
return ServiceFactory.createService(DomainDelegateLinker.class);
}
catch (TentackleRuntimeException rx) {
// this is the case in persistence unit tests, for example, since the DefaultDomainDelegateLinker resides
// in the domain-layer, which is not within the dependencies of the persistence module(s).
Logger.get(DomainDelegateLinkerHolder.class).warning("no DomainDelegateLinker configured -> fallback to reflection");
return new DomainDelegateLinker() {
@Override
public > void linkDomainObject(T pdo, DomainObject delegate) {
try {
Method setPdoMethod = delegate.getClass().getMethod("setPdo", PersistentDomainObject.class);
setPdoMethod.invoke(delegate, pdo);
}
catch (NoSuchMethodException | IllegalAccessException | InvocationTargetException e) {
throw new TentackleRuntimeException(e);
}
}
@Override
public > void linkDomainOperation(T operation, DomainOperation delegate) {
try {
Method setPdoMethod = delegate.getClass().getMethod("setOperation", Operation.class);
setPdoMethod.invoke(delegate, operation);
}
catch (NoSuchMethodException | IllegalAccessException | InvocationTargetException e) {
throw new TentackleRuntimeException(e);
}
}
};
}
}
DomainDelegateLinker INSTANCE = createLinker();
}
/**
* Links the domain delegate with its dynamic proxy.
* Provided to exclude the methods {@code setPdo} and {@code setOperation} from the interfaces {@link PdoProvider} and
* {@link OperationProvider}.
*/
public interface DomainDelegateLinker {
/**
* The singleton.
*
* @return the singleton
*/
static DomainDelegateLinker getInstance() {
return DomainDelegateLinkerHolder.INSTANCE;
}
/**
* Link the domain delegate to its {@link PersistentDomainObject}.
*
* @param pdo the PDO proxy
* @param delegate the domain delegate implementation
* @param the PDO type
*/
> void linkDomainObject(T pdo, DomainObject delegate);
/**
* Links the domain delegate to its {@link Operation}.
*
* @param operation the operation proxy
* @param delegate the domain delegate implementation
* @param the operation type
*/
> void linkDomainOperation(T operation, DomainOperation delegate);
}