From 2e082c838d2ca750f5daac6dcdabecc22dfd4e46 Mon Sep 17 00:00:00 2001
From: Kim Kibum <kb0929.kim@samsung.com>
Date: Mon, 21 May 2012 17:40:46 +0900
Subject: Upload Tizen:Base source

---
 examples_java/src/db/EnvExample.java | 144 +++++++++++++++++++++++++++++++++++
 1 file changed, 144 insertions(+)
 create mode 100644 examples_java/src/db/EnvExample.java

(limited to 'examples_java/src/db/EnvExample.java')

diff --git a/examples_java/src/db/EnvExample.java b/examples_java/src/db/EnvExample.java
new file mode 100644
index 0000000..a8c1f75
--- /dev/null
+++ b/examples_java/src/db/EnvExample.java
@@ -0,0 +1,144 @@
+/*-
+ * See the file LICENSE for redistribution information.
+ *
+ * Copyright (c) 1997-2009 Oracle.  All rights reserved.
+ *
+ * $Id$
+ */
+
+package db;
+
+import com.sleepycat.db.*;
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.OutputStream;
+
+/*
+ * An example of a program configuring a database environment.
+ *
+ * For comparison purposes, this example uses a similar structure
+ * as examples/ex_env.c and examples_cxx/EnvExample.cpp.
+ */
+public class EnvExample {
+    private static final String progname = "EnvExample";
+
+    private static void runApplication(Environment dbenv)
+        throws DatabaseException, FileNotFoundException {
+         
+        // Open a database in the environment to verify the data_dir
+        // has been set correctly.
+        DatabaseConfig dbconfig = new DatabaseConfig();
+
+        // The database is DB_BTREE.
+        dbconfig.setAllowCreate(true);
+        dbconfig.setMode(0644);
+        dbconfig.setType(DatabaseType.BTREE);
+        Database db=dbenv.openDatabase(null, 
+            "jEnvExample_db1.db", null, dbconfig);
+
+        // Close the database.
+        db.close();
+    }
+
+    private static void setupEnvironment(File home,
+                                         File dataDir,
+                                         OutputStream errs)
+        throws DatabaseException, FileNotFoundException {
+
+        // Create an environment object and initialize it for error reporting.
+        EnvironmentConfig config = new EnvironmentConfig();
+        config.setErrorStream(errs);
+        config.setErrorPrefix(progname);
+
+        //
+        // We want to specify the shared memory buffer pool cachesize,
+        // but everything else is the default.
+        //
+        config.setCacheSize(64 * 1024);
+
+        // Databases are in a separate directory.
+        config.addDataDir(dataDir);
+
+        // Open the environment with full transactional support.
+        config.setAllowCreate(true);
+        config.setInitializeCache(true);
+        config.setTransactional(true);
+        config.setInitializeLocking(true);
+
+        //
+        // open is declared to throw a FileNotFoundException, which normally
+        // shouldn't occur when allowCreate is set.
+        //
+        Environment dbenv = new Environment(home, config);
+
+        try {
+            // Start your application.
+            runApplication(dbenv);
+        } finally {
+            // Close the environment.  Doing this in the finally block ensures
+            // it is done, even if an error is thrown.
+            dbenv.close();
+        }
+    }
+
+    private static void teardownEnvironment(File home,
+                                            File dataDir,
+                                            OutputStream errs)
+        throws DatabaseException, FileNotFoundException {
+
+        // Remove the shared database regions.
+        EnvironmentConfig config = new EnvironmentConfig();
+
+        config.setErrorStream(errs);
+        config.setErrorPrefix(progname);
+        config.addDataDir(dataDir);
+        Environment.remove(home, true, config);
+    }
+
+    private static void usage() {
+        System.err.println("usage: java db.EnvExample [-h home] [-d data_dir]");
+        System.exit(1);
+    }
+
+    public static void main(String[] argv) {
+        //
+        // All of the shared database files live in home,
+        // but data files live in dataDir.
+        //
+        // Using Berkeley DB in C/C++, we need to allocate two elements
+        // in the array and set config[1] to NULL.  This is not
+        // necessary in Java.
+        //
+        File home = new File("TESTDIR");
+        File dataDir = new File("data");
+
+        for (int i = 0; i < argv.length; ++i) {
+            if (argv[i].equals("-h")) {
+                if (++i >= argv.length)
+                    usage();
+                home = new File(argv[i]);
+            } else if (argv[i].equals("-d")) {
+                if (++i >= argv.length)
+                    usage();
+                dataDir = new File(argv[i]);
+            } else if (argv[i].equals("-u")) {
+                usage();
+            }
+        }
+
+        try {
+            System.out.println("Setup env");
+            setupEnvironment(home, dataDir, System.err);
+
+            System.out.println("Teardown env");
+            teardownEnvironment(home, dataDir, System.err);
+        } catch (DatabaseException dbe) {
+            System.err.println(progname + ": environment open: " + dbe.toString());
+            System.exit (1);
+        } catch (FileNotFoundException fnfe) {
+            System.err.println(progname + ": unexpected open environment error  " + fnfe);
+            System.exit (1);
+        }
+    }
+
+}
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