Examples of com.sleepycat.je.Environment

com.sleepycat.je.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); 
```
Note that environment configuration parameters can also be set through the <environment home>/je.properties file. This file takes precedence over any programmatically specified configuration parameters so that configuration changes can be made without recompiling. Environment configuration follows this order of precedence:
1. Configuration parameters specified in <environment home>/je.properties take first precedence.
2. Configuration parameters set in the EnvironmentConfig object used at Environment construction are next.
3. Any configuration parameters not set by the application are set to system defaults, described along with the parameter name String constants in the EnvironmentConfig class.
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.je.Database Database} or {@link com.sleepycat.je.Transaction Transaction}. Once {@link com.sleepycat.je.Environment#close Environment.close} is called, this object may not be accessed again.

  }


  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);

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            EnvironmentConfig envConfig = TestUtils.initEnvConfig();
            envConfig.setAllowCreate(true);
            envConfig.setConfigParam(
                     EnvironmentParams.LOG_ITERATOR_MAX_SIZE.getName(), 
                                     bufferMaxSize);
            env = new Environment(envHome, envConfig);


            envImpl = DbInternal.envGetEnvironmentImpl(env);


            /* Make a log file */
            createLogFile(10, entrySize, entrySizeIncrement);

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    public void testEmptyExtraFile()
        throws Throwable {
  
  EnvironmentConfig envConfig = TestUtils.initEnvConfig();
        envConfig.setAllowCreate(true);
        Environment env = new Environment(envHome, envConfig);


        try {
            /* Make an environment. */
            env.sync();


            /* Add an extra, 0 length file */
            EnvironmentImpl envImpl = DbInternal.envGetEnvironmentImpl(env);


            File newFile = new File(envHome, "00000001.jdb");
            newFile.createNewFile();


            INFileReader reader = new INFileReader(envImpl,
                                                   1000,
                                                   DbLsn.NULL_LSN,
               DbLsn.NULL_LSN,
                                                   false,
                                                   false,
                                                   DbLsn.NULL_LSN,
                                                   null);
            while (reader.readNextEntry()) {
            }


        } catch (Throwable t) {
            t.printStackTrace();
            throw t;
        } finally {
            env.close();
        }
    }

View Full Code Here

        }
        setExtraProperties();
  if (createXAEnv) {
      env = new XAEnvironment(envHome, envConfig);
  } else {
      env = new Environment(envHome, envConfig);
  }
    }

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        verifyData(expectedData, numDbs);
  TestUtils.validateNodeMemUsage(DbInternal.envGetEnvironmentImpl(env),
                                      false);  
        /* Run verify again. */
        DbInternal.envGetEnvironmentImpl(env).close(false);
        env = new Environment(envHome, getRecoveryConfig(readOnlyMode));
        EnvironmentImpl envImpl = 
      DbInternal.envGetEnvironmentImpl(env);
        infoList.add(envImpl.getLastRecoveryInfo());
        verifyData(expectedData, numDbs);
        TestUtils.validateNodeMemUsage(envImpl, false);

View Full Code Here


        /* Open it again, which will run recovery. */
  if (createXAEnv) {
      env = new XAEnvironment(envHome, getRecoveryConfig(readOnlyMode));
  } else {
      env = new Environment(envHome, getRecoveryConfig(readOnlyMode));
  }
        TestUtils.validateNodeMemUsage(DbInternal.envGetEnvironmentImpl(env),
                                      false);


        infoList.add

View Full Code Here

            File file2 = new File("build/test/classes");


            /* Create an environment. */
            EnvironmentConfig envConfig = TestUtils.initEnvConfig();
            envConfig.setAllowCreate(true);
            Environment envA = new Environment(envHome, envConfig);


            /* Look in the environment pool with the relative path name. */
            DbEnvPool.EnvironmentImplInfo info =
                DbEnvPool.getInstance().getEnvironment
                    (file2, TestUtils.initEnvConfig());
            /* We should find this file in the pool. */
            assertEquals(false, info.firstHandle);
            envA.close();


        } catch (Throwable t) {
            /* Dump stack trace before trying to tear down. */
            t.printStackTrace();
            throw t;

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    (EnvironmentParams.NODE_MAX.getName(), "6");
      envConfig.setConfigParam(EnvironmentParams.MAX_MEMORY.getName(),
             new Long(1 << 24).toString());
            envConfig.setTransactional(true);
            envConfig.setTxnNoSync(Boolean.getBoolean(TestUtils.NO_SYNC));
            env = new Environment(envHome, envConfig);


            /*
             * Dbs 0  - N1-1 shouldn't exist
             * Dbs N1 - N5 should exist
             */
            checkForNoDb(dbName1, 0, N1);
            checkForDb(dbName1, N1, N5);


            /* Remove some dbs, abort */
            txn = env.beginTransaction(null, null);
            for (int i = N2; i < N4; i++) {
                env.removeDatabase(txn, dbName1+i);
            }
            txn.abort();


            /* Remove some dbs, commit */
            txn = env.beginTransaction(null, null);
            for (int i = N3; i < N4; i++) {
                env.removeDatabase(txn, dbName1+i);
            }
            txn.commit();


            /*
             * Dbs 0 - N1-1  should not exist
             * Dbs N1 - N3-1 should exist
             * Dbs N3 - N4-1 should not exist
             * Dbs N4 - N5-1 should exist
             */
            checkForNoDb(dbName1, 0, N1);
            checkForDb(dbName1, N1, N3);
            checkForNoDb(dbName1, N3, N4);
            checkForDb(dbName1, N4, N5);


            /* Close and recover */
            env.close();
            env = new Environment(envHome, envConfig);


            /*
             * Dbs 0 - N1-1  should not exist
             * Dbs N1 - N3-1 should exist
             * Dbs N3 - N4-1 should not exist

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        throws MBeanException {


        File environmentDirectory = new File(environmentHome);
        jeHelper = new JEMBeanHelper(environmentDirectory, false);


        Environment targetEnv = getEnvironmentIfOpen();
        try {
            resetMBeanInfo(targetEnv);
        } finally {
            closeEnvironment(targetEnv);
        }

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    public Object getAttribute(String attributeName)
        throws AttributeNotFoundException,
               MBeanException {


      Object result = null;
        Environment targetEnv = getEnvironmentIfOpen();
        try {
            result =  jeHelper.getAttribute(targetEnv, attributeName);
            targetEnv = checkForMBeanReset(targetEnv);
        } finally {
            /* release resource. */

View Full Code Here

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