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author | Kim Kibum <kb0929.kim@samsung.com> | 2012-05-21 17:40:46 +0900 |
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committer | Kim Kibum <kb0929.kim@samsung.com> | 2012-05-21 17:40:46 +0900 |
commit | 2e082c838d2ca750f5daac6dcdabecc22dfd4e46 (patch) | |
tree | 01c1dd87d4cc0b62a655c0d768ff695d2d244728 /examples_java/src/db/SequenceExample.java | |
parent | a86e3ca152fb414b376e64c449c201d762e414dd (diff) | |
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Diffstat (limited to 'examples_java/src/db/SequenceExample.java')
-rw-r--r-- | examples_java/src/db/SequenceExample.java | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/examples_java/src/db/SequenceExample.java b/examples_java/src/db/SequenceExample.java new file mode 100644 index 0000000..92f0984 --- /dev/null +++ b/examples_java/src/db/SequenceExample.java @@ -0,0 +1,92 @@ +/*- + * 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.IOException; +import java.io.PrintStream; + +class SequenceExample { + private static final int EXIT_SUCCESS = 0; + private static final int EXIT_FAILURE = 1; + + public SequenceExample() { + } + + public static void usage() { + System.out.println("usage: java " + + "db.SequenceExample [-r] [database]\n"); + System.exit(EXIT_FAILURE); + } + + public static void main(String[] argv) { + boolean removeExistingDatabase = false; + String databaseName = "access.db"; + + for (int i = 0; i < argv.length; i++) { + if (argv[i].equals("-r")) + removeExistingDatabase = true; + else if (argv[i].equals("-?")) + usage(); + else if (argv[i].startsWith("-")) + usage(); + else { + if ((argv.length - i) != 1) + usage(); + databaseName = argv[i]; + break; + } + } + + try { + SequenceExample app = new SequenceExample(); + app.run(removeExistingDatabase, databaseName); + } catch (DatabaseException dbe) { + System.err.println("SequenceExample: " + dbe.toString()); + System.exit(EXIT_FAILURE); + } catch (FileNotFoundException fnfe) { + System.err.println("SequenceExample: " + fnfe.toString()); + System.exit(EXIT_FAILURE); + } + System.exit(EXIT_SUCCESS); + } + + public void run(boolean removeExistingDatabase, String databaseName) + throws DatabaseException, FileNotFoundException { + + // Remove the previous database. + if (removeExistingDatabase) + new File(databaseName).delete(); + + // Create the database object. + // There is no environment for this simple example. + DatabaseConfig dbConfig = new DatabaseConfig(); + dbConfig.setErrorStream(System.err); + dbConfig.setErrorPrefix("SequenceExample"); + dbConfig.setType(DatabaseType.BTREE); + dbConfig.setAllowCreate(true); + Database table = new Database(databaseName, null, dbConfig); + + SequenceConfig config = new SequenceConfig(); + config.setAllowCreate(true); + DatabaseEntry key = + new DatabaseEntry("my_sequence".getBytes()); + Sequence sequence = table.openSequence(null, key, config); + + for (int i = 0; i < 10; i++) { + long seqnum = sequence.get(null, 1); + System.out.println("Got sequence number: " + seqnum); + } + + sequence.close(); + table.close(); + } +} |