Examples of com.sleepycat.db.Environment

com.sleepycat.db.Environment
an environment handle with default attributes. Environment env = new Environment(home, new EnvironmentConfig());
or
```
 Environment env = new Environment(home, null); 
```
Note that many Environment objects may access a single environment.
To create an environment or customize attributes, the application should customize the configuration class. For example:
```
 EnvironmentConfig envConfig = new EnvironmentConfig(); envConfig.setTransactional(true); envConfig.setAllowCreate(true); envConfig.setCacheSize(1000000);  Environment newlyCreatedEnv = new Environment(home, envConfig); 
```
Environment handles are free-threaded unless {@link com.sleepycat.db.EnvironmentConfig#setThreaded EnvironmentConfig.setThreaded} is called to disable this before the environment is opened.
An environment handle is an Environment instance. More than one Environment instance may be created for the same physical directory, which is the same as saying that more than one Environment handle may be open at one time for a given environment.
The Environment handle should not be closed while any other handle remains open that is using it as a reference (for example, {@link com.sleepycat.db.Database Database} or {@link com.sleepycat.db.Transaction Transaction}. Once {@link com.sleepycat.db.Environment#close Environment.close}is called, this object may not be accessed again, regardless of whether or not it throws an exception.

        DatabaseEntry keyEntry = new DatabaseEntry();
        DatabaseEntry dataEntry = new DatabaseEntry();
        assignKey(entity, keyEntry);


        boolean autoCommit = false;
  Environment env = db.getEnvironment();
        if (transactional &&
      txn == null &&
      DbCompat.getThreadTransaction(env) == null) {
            txn = env.beginTransaction(null, null);
            autoCommit = true;
        }


        boolean failed = true;
        Cursor cursor = db.openCursor(txn, null);

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        File dir = SharedTestUtils.getNewDir();
        ByteArrayBinding dataBinding = new ByteArrayBinding();
        EnvironmentConfig envConfig = new EnvironmentConfig();
        envConfig.setAllowCreate(true);
        DbCompat.setInitializeCache(envConfig, true);
        env = new Environment(dir, envConfig);
        DatabaseConfig dbConfig = new DatabaseConfig();
        DbCompat.setTypeBtree(dbConfig);
        dbConfig.setAllowCreate(true);
  if (comparator != null) {
      DbCompat.setBtreeComparator(dbConfig, comparator);

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                Embed_DeletedEntity6_EntityToPersist_WithDeleter embed =
                    new Embed_DeletedEntity6_EntityToPersist_WithDeleter();
                index.put(embed);
                embed = index.get(embed.key);
                /* This new type should exist only after update. */
                Environment env = store.getEnvironment();
                EntityModel model = store.getModel();
                checkEntity(true, model, env, NAME2, 0, null);
                checkVersions(model, NAME2, 0);
            }
        }

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            envConfig.setInitializeCache(true);
            envConfig.setInitializeLocking(true);
            if (create) {
                envConfig.setAllowCreate(true);
            }
            Environment env = new Environment(new File("."), envConfig);
      // Remove the previous database.
      if (removeExistingDatabase) {
                env.removeDatabase(null, databaseName, null);
            }


            // create the app and run it
            AccessExample app = new AccessExample(env, databaseName);
            app.run();

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        EnvironmentConfig envConfig = new EnvironmentConfig();
        envConfig.setTransactional(true);
        envConfig.setAllowCreate(true);
        envConfig.setInitializeCache(true);
        envConfig.setInitializeLocking(true);
        env = new Environment(new File(homeDirectory), envConfig);


        // Set the Berkeley DB config for opening all stores.
        //
        DatabaseConfig dbConfig = new DatabaseConfig();
        dbConfig.setTransactional(true);

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        EnvironmentConfig envConfig = new EnvironmentConfig();
        envConfig.setTransactional(true);
        envConfig.setAllowCreate(true);
        envConfig.setInitializeCache(true);
        envConfig.setInitializeLocking(true);
        env = new Environment(new File(homeDirectory), envConfig);


        // Set the Berkeley DB config for opening all stores.
        //
        DatabaseConfig dbConfig = new DatabaseConfig();
        dbConfig.setTransactional(true);

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                               "dropField", 77,
                               "dropAnnotation", 66,
                               "aa", 33,
                               "ff", 22);
            }
            Environment env = store.getEnvironment();
            assertDbExists(expectEvolved, env, NAME, "addAnnotation");
            assertDbExists(expectEvolved, env, NAME, "addField");
            assertDbExists(!expectEvolved, env, NAME, "dropField");
            assertDbExists(!expectEvolved, env, NAME, "dropAnnotation");
        }

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        EnvironmentConfig envConfig = new EnvironmentConfig();
        envConfig.setTransactional(true);
        envConfig.setAllowCreate(true);
        envConfig.setInitializeCache(true);
        envConfig.setInitializeLocking(true);
        env = new Environment(new File(homeDirectory), envConfig);


        // Set the Berkeley DB config for opening all stores.
        //
        DatabaseConfig dbConfig = new DatabaseConfig();
        dbConfig.setTransactional(true);

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            } else {
                checkRawFields(obj, "key", 99L,
                               "a", 1,
                               "b", 2);
            }
            Environment env = store.getEnvironment();
            assertDbExists(expectEvolved, env, NAME, "a");
            assertDbExists(expectEvolved, env, NAME, "b");
        }

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        EnvironmentConfig envConfig = new EnvironmentConfig();
        envConfig.setTransactional(true);
        envConfig.setAllowCreate(true);
        envConfig.setInitializeCache(true);
        envConfig.setInitializeLocking(true);
        env = new Environment(new File(homeDirectory), envConfig);


        // Set the Berkeley DB config for opening all stores.
        //
        DatabaseConfig dbConfig = new DatabaseConfig();
        dbConfig.setTransactional(true);

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Related Classes of com.sleepycat.db.Environment

collections.access.AccessExample

collections.hello.HelloDatabaseWorld

collections.ship.basic.SampleDatabase

collections.ship.entity.SampleDatabase

collections.ship.factory.SampleDatabase

collections.ship.index.SampleDatabase

collections.ship.marshal.SampleDatabase

collections.ship.sentity.SampleDatabase

collections.ship.tuple.SampleDatabase

com.sleepycat.collections.CurrentTransaction

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