Examples of com.sleepycat.je.DatabaseConfig

com.sleepycat.je.DatabaseConfig

Specifies the attributes of a database.

There are two groups of database attributes: per-database handle attributes, and database-wide attributes. An attribute may be persistent/transient or mutable/immutable:

Scope	Mutable	Persistent	Attribute
Database-wide attribute	True	True	{@link DatabaseConfig#getBtreeComparator() btree comparator} {@link DatabaseConfig#getDuplicateComparator() duplicate comparator} {@link DatabaseConfig#getKeyPrefixing() key prefixing} {@link DatabaseConfig#getNodeMaxEntries() nodeMaxEntries}
	True	False	{@link DatabaseConfig#getDeferredWrite() deferred write} {@link DatabaseConfig#getTransactional() transactional}
	False	True	{@link DatabaseConfig#getSortedDuplicates() sorted duplicates}
	False	False	{@link DatabaseConfig#getTemporary() temporary}
Per-database handle attributes	False	False	{@link DatabaseConfig#getAllowCreate() allow create} {@link DatabaseConfig#getExclusiveCreate() exclusive create} {@link DatabaseConfig#getReadOnly() read only} {@link DatabaseConfig#getUseExistingConfig() use existing config}

Persistent attributes will be saved in the log and remain in effect every time the environment is reopened. Transient attributes only remain in effect until:

the database configuration is updated
the database handle(per-database handle attributes) is closed, or all handles for this database (database-wide attributes) are closed.

         * create the threads until we need to start them.
         */
        EnvironmentConfig envConfig = TestUtils.initEnvConfig();
        envConfig.setAllowCreate(true);


        DatabaseConfig dbConfig = new DatabaseConfig();
        dbConfig.setAllowCreate(true);


        final int DATA_SIZE = 1024 * 10;
        final int N_RECORDS = 1000;
        final int N_ITERS = 30;


        DatabaseEntry key = new DatabaseEntry();
        DatabaseEntry data = new DatabaseEntry(new byte[DATA_SIZE]);


        Environment env = new Environment(envHome, envConfig);
        Database db = env.openDatabase(null, "MultiEnvOpenCloseTest",
                                       dbConfig);
        for (int i = 0; i < N_RECORDS; i += 1) {
            IntegerBinding.intToEntry(i, key);
            db.put(null, key, data);
        }


        db.close();
        env.close();


        envConfig.setAllowCreate(false);
        envConfig.setReadOnly(true);
        dbConfig.setAllowCreate(false);
        dbConfig.setReadOnly(true);


        for (int i = 1; i <= N_ITERS; i += 1) {
            //System.out.println("MultiEnvOpenCloseTest iteration # " + i);
            env = new Environment(envHome, envConfig);
            db = env.openDatabase(null, "MultiEnvOpenCloseTest", dbConfig);

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        envConfig.setConfigParam
            (EnvironmentParams.ENV_RUN_INCOMPRESSOR.getName(), "false");
       
        env = new Environment(envHome, envConfig);


        DatabaseConfig dbConfig = new DatabaseConfig();
        dbConfig.setAllowCreate(true);
        dbConfig.setTransactional(true);
        dbConfig.setSortedDuplicates(dups);
        db = env.openDatabase(null, "PhantomRestartTest", dbConfig);
    }

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        envConfig.setTransactional(true);
        Environment env = new Environment(envHome, envConfig);
  EnvironmentImpl envImpl = DbInternal.envGetEnvironmentImpl(env);
  FileManager fileManager = envImpl.getFileManager();


        DatabaseConfig dbConfig = new DatabaseConfig();
        dbConfig.setAllowCreate(true);
        Database exampleDb =
      env.openDatabase(null, "simpleDb", dbConfig);


        assertEquals("Should have 0 as current file", 0L,
                     fileManager.getCurrentFileNum());

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        throws Throwable {


        try {
            ByteBuffer buffer = ByteBuffer.allocate(1000);
            database = new DatabaseImpl("foo", new DatabaseId(1),
                                        env, new DatabaseConfig());


            /*
             * For each loggable object, can we write the entry data out?
             */

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        envConfig.setAllowCreate(true);
        envConfig.setTransactional(true);
        env = new Environment(envHome, envConfig);


        DatabaseConfig dbConfig = new DatabaseConfig();
        dbConfig.setAllowCreate(true);
        dbConfig.setTransactional(true);
        dbConfig.setSortedDuplicates(dups);
        db = env.openDatabase(null, DB_NAME, dbConfig);
    }

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                if (env.isReadOnly()) {
                    return false;
                }
                db = dbTree.createDb
                    (autoTxn, DbTree.UTILIZATION_DB_NAME,
                     new DatabaseConfig(), null,
                     false /* No eviction allowed */);
            }
            fileSummaryDb = db;
            operationOk = true;
            return true;

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        /*
         * Create a log file full of INs, INDeleteInfo, BINDeltas and
         * Debug Records
         */
        DatabaseConfig dbConfig = new DatabaseConfig();
        dbConfig.setAllowCreate(true);
        db = env.openDatabase(null, "foo", dbConfig);
        LogManager logManager = envImpl.getLogManager();
        maxNodeId = 0;


        checkList = new ArrayList();

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    }


    private Database openPrimary(String name)
        throws DatabaseException {


        DatabaseConfig dbConfig = new DatabaseConfig();
        dbConfig.setTransactional(isTransactional);
        dbConfig.setAllowCreate(true);


        Transaction txn = txnBegin();
        try {
            return env.openDatabase(txn, name, dbConfig);
        } finally {

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     * Opens the primary database.
     */
    private Database openPrimary(String name)
        throws DatabaseException {


        DatabaseConfig dbConfig = new DatabaseConfig();
        dbConfig.setTransactional(isTransactional);
        dbConfig.setAllowCreate(true);
        Transaction txn = txnBegin();
        Database priDb;
        try {
            priDb = env.openDatabase(txn, name, dbConfig);
        } finally {

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  if (!cacheSize.equals("0")) {
      envConfig.setConfigParam("je.maxMemory", cacheSize);
  }
        env = new Environment(new File("."), envConfig);


        DatabaseConfig dbConfig = new DatabaseConfig();
        dbConfig.setAllowCreate(true);
        dbConfig.setSortedDuplicates(true);
  dbConfig.setTransactional(true);
        db = env.openDatabase(null, "InsertAndDelete", dbConfig);
    }

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