Example usage for javax.persistence.spi PersistenceProviderResolverHolder getPersistenceProviderResolver

Introduction

In this page you can find the example usage for javax.persistence.spi PersistenceProviderResolverHolder getPersistenceProviderResolver.

Prototype

public static PersistenceProviderResolver getPersistenceProviderResolver() 

Source Link

Document

Returns the current persistence provider resolver.

Usage

From source file:org.kie.server.services.jbpm.JbpmKieServerExtension.java

protected EntityManagerFactory build(Map<String, String> properties) {
    try {//from ww  w.  j a  v  a  2s  . c  om
        InitialContext ctx = new InitialContext();
        InputStream inputStream = PersistenceUnitInfoLoader.class.getResourceAsStream(PERSISTENCE_XML_LOCATION);
        PersistenceUnitInfo info = PersistenceUnitInfoLoader.load(inputStream, ctx,
                this.getClass().getClassLoader());
        // prepare persistence unit root location
        URL root = PersistenceUnitInfoLoader.class.getResource(PERSISTENCE_XML_LOCATION);
        String jarLocation = root.toExternalForm().split("!")[0].replace(PERSISTENCE_XML_LOCATION, "");
        try {
            ((PersistenceUnitInfoImpl) info).setPersistenceUnitRootUrl(new URL(jarLocation));
        } catch (Exception e) {
            // in case setting URL to jar file location only fails, fallback to complete URL
            ((PersistenceUnitInfoImpl) info).setPersistenceUnitRootUrl(root);
        }
        // Need to explicitly set jtaDataSource here, its value is fetched in Hibernate logger before configuration
        ((PersistenceUnitInfoImpl) info).setJtaDataSource(properties.get("javax.persistence.jtaDataSource"));
        List<PersistenceProvider> persistenceProviders = PersistenceProviderResolverHolder
                .getPersistenceProviderResolver().getPersistenceProviders();
        PersistenceProvider selectedProvider = null;
        if (persistenceProviders != null) {
            for (PersistenceProvider provider : persistenceProviders) {
                if (provider.getClass().getName().equals(info.getPersistenceProviderClassName())) {
                    selectedProvider = provider;
                    break;
                }
            }
        }

        return selectedProvider.createContainerEntityManagerFactory(info, properties);
    } catch (Exception e) {
        throw new RuntimeException("Unable to create EntityManagerFactory due to " + e.getMessage(), e);
    }
}

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From source file:org.seedstack.jpa.internal.EntityManagerFactoryFactory.java

private EntityManagerFactory createEntityManagerFactory(InternalPersistenceUnitInfo info,
        Properties properties) {// ww  w  .  j a  v  a2  s  . c  o m
    HashMap<String, String> propertiesMap = new HashMap<String, String>();
    if (properties != null) {
        for (Object key : properties.keySet()) {
            propertiesMap.put((String) key, properties.getProperty((String) key));
        }
    }

    EntityManagerFactory fac = null;
    List<PersistenceProvider> persistenceProviders = PersistenceProviderResolverHolder
            .getPersistenceProviderResolver().getPersistenceProviders();

    for (PersistenceProvider persistenceProvider : persistenceProviders) {
        info.setPersistenceProviderClassName(persistenceProvider.getClass().getName());
        fac = persistenceProvider.createContainerEntityManagerFactory(info, propertiesMap);
        if (fac != null) {
            break;
        }
    }

    if (fac == null) {
        throw new PersistenceException(
                "No Persistence provider for EntityManager named " + info.getPersistenceUnitName());
    }

    return fac;
}

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