/*
* #%L
* gitools-core
* %%
* Copyright (C) 2013 Universitat Pompeu Fabra - Biomedical Genomics group
* %%
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this program. If not, see
* <http://www.gnu.org/licenses/gpl-3.0.html>.
* #L%
*/
package org.gitools.persistence;
import org.gitools.api.PersistenceException;
import org.gitools.api.analysis.IProgressMonitor;
import org.gitools.api.persistence.IPersistenceManager;
import org.gitools.api.resource.IResource;
import org.gitools.api.resource.IResourceFilter;
import org.gitools.api.resource.IResourceFormat;
import org.gitools.api.resource.IResourceLocator;
import org.gitools.persistence.locators.UrlResourceLocator;
import org.gitools.persistence.locators.filters.cache.CacheResourceManager;
import org.gitools.persistence.locators.filters.gz.GzResourceFilter;
import javax.annotation.PostConstruct;
import javax.enterprise.context.ApplicationScoped;
import javax.enterprise.inject.Any;
import javax.enterprise.inject.Instance;
import javax.inject.Inject;
import java.io.File;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
@ApplicationScoped
public class PersistenceManager implements Serializable, IPersistenceManager {
@Inject
@Any
private Instance<IResourceFilter> resourceFilters;
@Inject
@Any
private Instance<IResourceFormat<?>> resourceFormats;
private final List<IResourceFilter> filters = new ArrayList<>();
private final Map<Class<? extends IResource>, Map<String, IResourceFormat>> formats = new HashMap<>();
private final Map<Class<? extends IResource>, String> classToDefaultExtension = new HashMap<>();
public PersistenceManager() {
}
@PostConstruct
public void init() {
for (IResourceFormat resourceFormat : resourceFormats) {
registerFormat(resourceFormat);
}
for (IResourceFilter resourceFilter : resourceFilters) {
registerResourceFilter(resourceFilter);
}
}
@Override
public <R extends IResource> IResourceFormat<R> getFormat(String fileNameOrExtension, Class<R> resourceClass) {
if (resourceClass == null) {
resourceClass = (Class<R>) IResource.class;
}
String extension = getFormatExtension(fileNameOrExtension);
Map<String, IResourceFormat> extensions = formats.get(resourceClass);
if (extensions == null) {
// Try to deduce from the extension and the parent class
for (Class<? extends IResource> keyClass : formats.keySet()) {
if (resourceClass.isAssignableFrom(keyClass) && formats.get(keyClass).containsKey(extension)) {
return formats.get(keyClass).get(extension);
}
}
for (Class<? extends IResource> keyClass : formats.keySet()) {
if (keyClass.isAssignableFrom(resourceClass) && formats.get(keyClass).containsKey(extension)) {
return formats.get(keyClass).get(extension);
}
}
return null;
}
IResourceFormat resourceFormat = extensions.get(extension);
if (resourceFormat == null) {
// Return the default format for the given resource class
String defaultExtension = getDefaultExtension(resourceClass);
resourceFormat = extensions.get(defaultExtension);
}
return resourceFormat;
}
@Override
public String getFormatExtension(String fileNameOrExtension) {
String extension = removeFiltersExtensions(fileNameOrExtension);
int dot = extension.lastIndexOf(".");
if (dot != -1) {
extension = extension.substring(dot + 1);
}
return extension;
}
@Override
public String getDefaultExtension(Class<? extends IResource> resourceClass) {
if (classToDefaultExtension.containsKey(resourceClass)) {
return classToDefaultExtension.get(resourceClass);
}
// Look for a class high in the hierarchy
for (Class<? extends IResource> keyClass : classToDefaultExtension.keySet()) {
if (keyClass.isAssignableFrom(resourceClass)) {
return classToDefaultExtension.get(keyClass);
}
}
throw new RuntimeException("Class '" + resourceClass + "' is not registered");
}
@Override
@Deprecated
public <R extends IResource> R load(File file, Class<R> resourceClass, IProgressMonitor progressMonitor) {
return load(new UrlResourceLocator(file), getFormat(file.getName(), resourceClass), progressMonitor);
}
@Override
public <R extends IResource> R load(IResourceLocator resourceLocator, Class<R> resourceClass, IProgressMonitor progressMonitor) {
return load(resourceLocator, getFormat(resourceLocator.getExtension(), resourceClass), progressMonitor);
}
@Override
public <R extends IResource> R load(IResourceLocator resourceLocator, IResourceFormat<R> resourceFormat, IProgressMonitor progressMonitor) throws PersistenceException {
// Use cached locator if exists
IResourceLocator filteredResourceLocator = applyCache(resourceLocator);
// Add filters
filteredResourceLocator = applyFilters(filteredResourceLocator);
// Configure the format
if (resourceFormat.isConfigurable()) {
resourceFormat.configure(filteredResourceLocator, progressMonitor);
}
// Build the resource
IProgressMonitor subTask = progressMonitor.subtask();
subTask.begin("Reading " + filteredResourceLocator.getName(), filteredResourceLocator.getContentLength());
R resource = resourceFormat.read(filteredResourceLocator, subTask);
subTask.end();
// Set the original locator without the filters.
resource.setLocator(filteredResourceLocator);
return resource;
}
public IResourceLocator applyCache(IResourceLocator resourceLocator) {
return CacheResourceManager.get().getCacheResourceLocator(resourceLocator);
}
@Override
public <R extends IResource> void store(IResourceLocator resourceLocator, R resource, IProgressMonitor progressMonitor) throws PersistenceException {
store(resourceLocator, resource, (IResourceFormat<R>) getFormat(resourceLocator.getExtension(), resource.getClass()), progressMonitor);
}
@Override
public <R extends IResource> void store(IResourceLocator resourceLocator, R resource, IResourceFormat<R> resourceFormat, IProgressMonitor progressMonitor) throws PersistenceException {
if (resourceFormat == null) {
resourceFormat = (IResourceFormat<R>) getFormat(resourceLocator.getName(), resource.getClass());
}
// Add filters
resourceLocator = applyFilters(resourceLocator);
// Write the resource
resourceFormat.write(resourceLocator, resource, progressMonitor);
// Close resourceLocator
if (!progressMonitor.isCancelled()) {
resourceLocator.close(progressMonitor);
}
}
private void registerFormat(IResourceFormat resourceFormat) {
if (!formats.containsKey(resourceFormat.getResourceClass())) {
formats.put(resourceFormat.getResourceClass(), new HashMap<String, IResourceFormat>());
}
Map<String, IResourceFormat> extensions = formats.get(resourceFormat.getResourceClass());
extensions.put(resourceFormat.getExtension(), resourceFormat);
//TODO use filters interface or register at PersistenceInitialization
if (resourceFormat.isDefaultExtension()) {
if (resourceFormat.isContainer()) {
//registerDefaultExtension(resourceFormat.getResourceClass(), resourceFormat.getExtension() + "." + ZipResourceFilter.SUFFIX);
registerDefaultExtension(resourceFormat.getResourceClass(), resourceFormat.getExtension());
} else {
registerDefaultExtension(resourceFormat.getResourceClass(), resourceFormat.getExtension() + "." + GzResourceFilter.SUFFIX);
}
}
}
private void registerDefaultExtension(Class<? extends IResource> resourceClass, String extension) {
classToDefaultExtension.put(resourceClass, extension);
}
private void registerResourceFilter(IResourceFilter resourceFilter) {
filters.add(resourceFilter);
}
public IResourceLocator applyFilters(IResourceLocator resourceLocator) {
for (IResourceFilter filter : filters) {
resourceLocator = filter.apply(resourceLocator);
}
return resourceLocator;
}
private String removeFiltersExtensions(String extension) {
for (IResourceFilter filter : filters) {
extension = filter.removeExtension(extension);
}
return extension;
}
}