| package org.apache.aries.tx.control.jpa.local.impl; |
| |
| import static java.util.Optional.ofNullable; |
| import static javax.persistence.spi.PersistenceUnitTransactionType.RESOURCE_LOCAL; |
| |
| import java.util.Map; |
| |
| import javax.persistence.EntityManagerFactory; |
| import javax.persistence.spi.PersistenceUnitTransactionType; |
| |
| import org.osgi.service.jpa.EntityManagerFactoryBuilder; |
| import org.osgi.service.transaction.control.TransactionException; |
| import org.osgi.service.transaction.control.jpa.JPAEntityManagerProvider; |
| import org.osgi.service.transaction.control.jpa.JPAEntityManagerProviderFactory; |
| |
| public class JPAEntityManagerProviderFactoryImpl implements JPAEntityManagerProviderFactory { |
| |
| @Override |
| public JPAEntityManagerProvider getProviderFor(EntityManagerFactoryBuilder emfb, Map<String, Object> jpaProperties, |
| Map<String, Object> resourceProviderProperties) { |
| checkEnlistment(resourceProviderProperties); |
| |
| EntityManagerFactory emf = emfb.createEntityManagerFactory(jpaProperties); |
| |
| validateEMF(emf); |
| |
| return new JPAEntityManagerProviderImpl(emf); |
| } |
| |
| private void validateEMF(EntityManagerFactory emf) { |
| Object o = emf.getProperties().get("javax.persistence.transactionType"); |
| |
| PersistenceUnitTransactionType tranType; |
| if(o instanceof PersistenceUnitTransactionType) { |
| tranType = (PersistenceUnitTransactionType) o; |
| } else if (o instanceof String) { |
| tranType = PersistenceUnitTransactionType.valueOf(o.toString()); |
| } else { |
| //TODO log this? |
| tranType = RESOURCE_LOCAL; |
| } |
| |
| if(RESOURCE_LOCAL != tranType) { |
| throw new IllegalArgumentException("The supplied EntityManagerFactory is not declared RESOURCE_LOCAL"); |
| } |
| } |
| |
| @Override |
| public JPAEntityManagerProvider getProviderFor(EntityManagerFactory emf, Map<String, Object> jpaProperties, |
| Map<String, Object> resourceProviderProperties) { |
| checkEnlistment(resourceProviderProperties); |
| validateEMF(emf); |
| |
| return new JPAEntityManagerProviderImpl(emf); |
| } |
| |
| private void checkEnlistment(Map<String, Object> resourceProviderProperties) { |
| if (toBoolean(resourceProviderProperties, XA_ENLISTMENT_ENABLED, false)) { |
| throw new TransactionException("This Resource Provider does not support XA transactions"); |
| } else if (!toBoolean(resourceProviderProperties, LOCAL_ENLISTMENT_ENABLED, true)) { |
| throw new TransactionException( |
| "This Resource Provider always enlists in local transactions as it does not support XA"); |
| } |
| } |
| |
| private boolean toBoolean(Map<String, Object> props, String key, boolean defaultValue) { |
| Object o = ofNullable(props) |
| .map(m -> m.get(key)) |
| .orElse(defaultValue); |
| |
| if (o instanceof Boolean) { |
| return ((Boolean) o).booleanValue(); |
| } else if(o instanceof String) { |
| return Boolean.parseBoolean((String) o); |
| } else { |
| throw new IllegalArgumentException("The property " + key + " cannot be converted to a boolean"); |
| } |
| } |
| } |