org.tentackle.pdo.NoTransactionInterceptor 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.reflect.AbstractInterceptor;
import org.tentackle.reflect.EffectiveClassProvider;
import org.tentackle.session.PersistenceException;
import org.tentackle.session.Session;
import org.tentackle.session.SessionProvider;
import java.lang.reflect.Method;
/**
* Implementation for the {@link NoTransaction} interception.
*
* @author harald
*/
public final class NoTransactionInterceptor extends AbstractInterceptor {
/**
* Creates a {@link NoTransaction} interceptor.
*/
public NoTransactionInterceptor() {
// see -Xlint:missing-explicit-ctor since Java 16
}
@Override
@SuppressWarnings("rawtypes")
public Object proceed(Object proxy, Method method, Object[] args,
Object orgProxy, Method orgMethod, Object[] orgArgs) throws Throwable {
if (orgProxy instanceof SessionProvider) {
Session session = ((SessionProvider) orgProxy).getSession();
if (session.isTxRunning()) {
boolean cachedOnly = ((NoTransaction) getAnnotation()).cachedOnly();
// may be an operation as well, hence the test
PersistentDomainObject pdo = orgProxy instanceof PdoProvider ?
((PdoProvider) orgProxy).getPdo() : null;
if (pdo != null && !pdo.getPersistenceDelegate().isRootEntity()) {
PersistentDomainObject root = pdo.getPersistenceDelegate().getDomainContext().getRootEntity();
if (root == null) {
throw new PersistenceException("cannot determine root-entity for component-PDO " + pdo.toGenericString());
}
pdo = root;
}
if (cachedOnly && pdo == null) {
throw new PersistenceException(EffectiveClassProvider.getEffectiveClass(orgProxy) + " is not a PDO");
}
if (!cachedOnly || pdo.isCached()) {
StringBuilder buf = new StringBuilder();
buf.append(orgMethod).append(" must not be used within a transaction!");
boolean needClosing = false;
if (session.getTxName() != null) {
buf.append(" (txName=").append(session.getTxName());
needClosing = true;
}
if (pdo != null) {
buf.append(needClosing ? ", " : " (");
if (pdo.isCached()) {
buf.append("cached ");
}
buf.append("pdo=").append(pdo.toGenericString());
needClosing = true;
}
if (needClosing) {
buf.append(')');
}
throw new PersistenceException(buf.toString());
}
}
// else ok:
return method.invoke(proxy, args);
}
else {
throw new PersistenceException(EffectiveClassProvider.getEffectiveClass(orgProxy) +
" is not a SessionProvider");
}
}
}