ResultsCacheFactory.java

//package org.genedb.web.mvc.model;
//
//import org.genedb.web.mvc.controller.download.ResultEntry;
//
//import org.apache.log4j.Logger;
//
//import java.io.File;
//
//import com.sleepycat.bind.EntryBinding;
//import com.sleepycat.bind.serial.SerialBinding;
//import com.sleepycat.bind.serial.StoredClassCatalog;
//import com.sleepycat.collections.StoredMap;
//import com.sleepycat.je.Database;
//import com.sleepycat.je.DatabaseConfig;
//import com.sleepycat.je.DatabaseException;
//import com.sleepycat.je.Environment;
//import com.sleepycat.je.EnvironmentConfig;
//import com.sleepycat.je.EnvironmentLockedException;
//
//
//public class ResultsCacheFactory {
//
//    private boolean clearAll = true;
//
//    public void setClearAll(boolean clearAll) {
//        this.clearAll = clearAll;
//    }
//
//    private Environment env;
//
//    private StoredClassCatalog javaCatalog;
//    private Database resultsCacheDb;
//
//    private StoredMap<String, ResultEntry> resultsCacheMap;
//
//    public StoredMap<String, ResultEntry> getResultsCacheMap() {
//        openDb();
//        return resultsCacheMap;
//    }
//
//    private String rootDirectory;
//
//    private boolean readOnly;
//
//    private boolean allowCreate = false;
//
//	private final static Logger logger = Logger.getLogger(ResultsCacheFactory.class);
//
//    private final String CLASS_CATALOG = "java_class_catalog";
//
//    private final String RESULTS_CACHE_STORE = "dtos";
//
//    // This field must only be accessed while holding a lock on this object
//    private boolean databaseIsOpen = false;
//
//    {
//        logger.debug("Instantiating BerkeleyMapFactory");
//    }
//
//    private synchronized void openDb() {
//        if (databaseIsOpen) {
//            return;
//        }
//
//        Runtime.getRuntime().addShutdownHook( new Thread() {
//            @Override
//            public void run() {
//                closeDb();
//            }
//        });
//
//        logger.debug("Opening environment in: " + rootDirectory);
//        File rootDirectoryFile = new File(rootDirectory);
//        if (!rootDirectoryFile.exists()) {
//            rootDirectoryFile.mkdirs();
//        } else {
//            if (clearAll) {
//                for (File file : rootDirectoryFile.listFiles()) {
//                    if (! file.delete()) {
//                        throw new RuntimeException(String.format("Can't empty results cache, specifically '%s'", file.getAbsolutePath()));
//                    }
//                }
//            }
//            File lock = new File(rootDirectoryFile, "je.lck");
//            if (lock.exists()) {
//                lock.delete();
//            }
//
//        }
//        logger.debug("Read-only status: " + readOnly);
//
//        EnvironmentConfig envConfig = new EnvironmentConfig();
//        envConfig.setTransactional(true);
//        envConfig.setAllowCreate(allowCreate);
//        envConfig.setReadOnly(readOnly);
//
//        try {
//            env = new Environment(rootDirectoryFile, envConfig);
//        } catch (EnvironmentLockedException e) {
//            throw new RuntimeException("Unable to open Berkeley databases", e);
//        } catch (DatabaseException e) {
//            throw new RuntimeException("Unable to open Berkeley databases", e);
//        }
//
//        DatabaseConfig dbConfig = new DatabaseConfig();
//        dbConfig.setTransactional(true);
//        dbConfig.setAllowCreate(!readOnly);
//        dbConfig.setReadOnly(readOnly);
//
//        try {
//            Database catalogDb = env.openDatabase(null, CLASS_CATALOG, dbConfig);
//            javaCatalog = new StoredClassCatalog(catalogDb);
//
//            resultsCacheDb = env.openDatabase(null, RESULTS_CACHE_STORE, dbConfig);
//            databaseIsOpen = true;
//        }
//        catch (DatabaseException exp) {
//            throw new RuntimeException("Unable to open Berkeley databases", exp);
//        }
//
//        EntryBinding<String> stringBinding =
//            new SerialBinding<String>(javaCatalog, String.class);
//        EntryBinding<ResultEntry> resultEntryBinding =
//            new SerialBinding<ResultEntry>(javaCatalog, ResultEntry.class);
//
//        resultsCacheMap =
//            new StoredMap<String, ResultEntry>(resultsCacheDb, stringBinding, resultEntryBinding, true);
//
//    }
//
//
//    public synchronized void closeDb() {
//        try {
//            resultsCacheDb.close();
//        } catch (DatabaseException exp) {
//            throw new RuntimeException("Unable to close DTO Berkeley DB", exp);
//        }
//
//       try {
//           javaCatalog.close();
//       } catch (DatabaseException exp) {
//           throw new RuntimeException("Unable to close stored class catalog", exp);
//       }
//
//       try {
//           env.close();
//       } catch (DatabaseException exp) {
//           throw new RuntimeException("Unable to close environment", exp);
//       }
//
//        databaseIsOpen = false;
//    }
//
//
//    public void setRootDirectory(String rootDirectory) {
//        this.rootDirectory = rootDirectory;
//    }
//
//
//    public void setReadOnly(boolean readOnly) {
//        this.readOnly = readOnly;
//    }
//
//    public void setAllowCreate(boolean allowCreate) {
//		this.allowCreate = allowCreate;
//	}
//}