org.apache.nifi.h2.database.migration

Class DatabaseVersionReader

java.lang.Object

org.apache.nifi.h2.database.migration.DatabaseVersionReader

class DatabaseVersionReader
extends Object

H2 Database Version Reader

Field Summary

Fields

Modifier and Type	Field and Description
private static int	DECIMAL_RADIX
private static int	END_OF_FILE
private static byte[]	FORMAT_PREFIX
private static int	FORMAT_PREFIX_LENGTH
private static int	KEY_VALUE_SEPARATOR

Constructor Summary

Constructors

Constructor and Description
DatabaseVersionReader()

Method Summary

Modifier and Type	Method and Description
private static DatabaseVersion	findDatabaseVersion(InputStream inputStream)
private static DatabaseVersion	getDatabaseVersion(int formatVersion)
(package private) static DatabaseVersion	readDatabaseVersion(Path filePath) Read Database Version from H2 Database File Path using format:version header indicator

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

KEY_VALUE_SEPARATOR

private static final int KEY_VALUE_SEPARATOR

See Also:

Constant Field Values

FORMAT_PREFIX

private static final byte[] FORMAT_PREFIX

FORMAT_PREFIX_LENGTH

private static final int FORMAT_PREFIX_LENGTH

DECIMAL_RADIX

private static final int DECIMAL_RADIX

See Also:

Constant Field Values

END_OF_FILE

private static final int END_OF_FILE

See Also:

Constant Field Values

Constructor Detail

DatabaseVersionReader

DatabaseVersionReader()

Method Detail

readDatabaseVersion

static DatabaseVersion readDatabaseVersion(Path filePath)

Read Database Version from H2 Database File Path using format:version header indicator

Parameters:

filePath - H2 Database File Path

Returns:

H2 Database Version

findDatabaseVersion

private static DatabaseVersion findDatabaseVersion(InputStream inputStream)
                                            throws IOException

Throws:

IOException

getDatabaseVersion

private static DatabaseVersion getDatabaseVersion(int formatVersion)