/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.isis.core.metamodel.services.bookmarks;
import java.util.List;
import java.util.Map;
import javax.inject.Inject;
import com.google.common.collect.Maps;
import org.apache.isis.applib.annotation.DomainService;
import org.apache.isis.applib.annotation.NatureOfService;
import org.apache.isis.applib.annotation.Programmatic;
import org.apache.isis.applib.services.bookmark.Bookmark;
import org.apache.isis.applib.services.bookmark.BookmarkHolder;
import org.apache.isis.applib.services.bookmark.BookmarkService2;
import org.apache.isis.applib.services.registry.ServiceRegistry2;
import org.apache.isis.applib.services.wrapper.WrapperFactory;
import org.apache.isis.core.metamodel.services.persistsession.PersistenceSessionServiceInternal;
import org.apache.isis.core.runtime.persistence.ObjectNotFoundException;
/**
* This service enables a serializable "bookmark" to be created for an entity.
*
* <p>
* This implementation has no UI and there are no other implementations of the service API, and so it annotated
* with {@link org.apache.isis.applib.annotation.DomainService}. Because this class is implemented in core, this means
* that it is automatically registered and available for use; no further configuration is required.
*/
@DomainService(
nature = NatureOfService.DOMAIN,
menuOrder = "" + Integer.MAX_VALUE
)
public class BookmarkServiceInternalDefault implements BookmarkService2 {
@Programmatic
public Object lookup(
final BookmarkHolder bookmarkHolder,
final FieldResetPolicy fieldResetPolicy) {
Bookmark bookmark = bookmarkHolder.bookmark();
return bookmark != null? lookup(bookmark, fieldResetPolicy): null;
}
@Programmatic
@Override
public Object lookup(final BookmarkHolder bookmarkHolder) {
return lookup(bookmarkHolder, FieldResetPolicy.RESET);
}
private Object lookupInternal(
final Bookmark bookmark,
final FieldResetPolicy fieldResetPolicy) {
if(bookmark == null) {
return null;
}
try {
return persistenceSessionServiceInternal.lookup(bookmark, fieldResetPolicy);
} catch(ObjectNotFoundException ex) {
return null;
}
}
@Programmatic
@Override
public Object lookup(
final Bookmark bookmark,
final FieldResetPolicy fieldResetPolicy) {
if(bookmark == null) {
return null;
}
final String objectType = bookmark.getObjectType();
final Object service = lookupService(objectType);
if(service != null) {
return service;
}
return lookupInternal(bookmark, fieldResetPolicy);
}
@Programmatic
@Override
public Object lookup(final Bookmark bookmark) {
return lookup(bookmark, FieldResetPolicy.RESET);
}
@SuppressWarnings("unchecked")
@Programmatic
@Override
public <T> T lookup(
final Bookmark bookmark,
final FieldResetPolicy fieldResetPolicy,
Class<T> cls) {
return (T) lookup(bookmark, fieldResetPolicy);
}
@SuppressWarnings("unchecked")
@Programmatic
@Override
public <T> T lookup(final Bookmark bookmark, Class<T> cls) {
return (T) lookup(bookmark, FieldResetPolicy.RESET, cls);
}
@Programmatic
@Override
public Bookmark bookmarkFor(final Object domainObject) {
if(domainObject == null) {
return null;
}
return persistenceSessionServiceInternal.bookmarkFor(unwrapped(domainObject));
}
private Object unwrapped(Object domainObject) {
return wrapperFactory != null ? wrapperFactory.unwrap(domainObject) : domainObject;
}
@Programmatic
@Override
public Bookmark bookmarkFor(Class<?> cls, String identifier) {
return persistenceSessionServiceInternal.bookmarkFor(cls, identifier);
}
private Map<String,Object> servicesByClassName;
private Object lookupService(final String className) {
cacheServicesByClassNameIfNecessary();
return servicesByClassName.get(className);
}
private void cacheServicesByClassNameIfNecessary() {
if (servicesByClassName == null) {
final Map<String,Object> servicesByClassName = Maps.newHashMap();
final List<Object> registeredServices = serviceRegistry2.getRegisteredServices();
for (Object registeredService : registeredServices) {
final String serviceClassName = registeredService.getClass().getName();
servicesByClassName.put(serviceClassName, registeredService);
}
this.servicesByClassName = servicesByClassName;
}
}
@javax.inject.Inject
PersistenceSessionServiceInternal persistenceSessionServiceInternal;
@javax.inject.Inject
private WrapperFactory wrapperFactory;
@Inject
ServiceRegistry2 serviceRegistry2;
}