Package org.sqlite
Class SQLiteJDBCLoader
- java.lang.Object
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- org.sqlite.SQLiteJDBCLoader
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public class SQLiteJDBCLoader extends java.lang.Object
Set the system properties, org.sqlite.lib.path, org.sqlite.lib.name, appropriately so that the SQLite JDBC driver can find *.dll, *.jnilib and *.so files, according to the current OS (win, linux, mac). The library files are automatically extracted from this project's package (JAR). usage: callinitialize()
before using SQLite JDBC driver.
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Field Summary
Fields Modifier and Type Field Description private static boolean
extracted
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Constructor Summary
Constructors Constructor Description SQLiteJDBCLoader()
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Method Summary
All Methods Static Methods Concrete Methods Deprecated Methods Modifier and Type Method Description (package private) static void
cleanup()
Deleted old native libraries e.g.private static boolean
contentsEquals(java.io.InputStream in1, java.io.InputStream in2)
private static boolean
extractAndLoadLibraryFile(java.lang.String libFolderForCurrentOS, java.lang.String libraryFileName, java.lang.String targetFolder)
Extracts and loads the specified library file to the target folderstatic int
getMajorVersion()
static int
getMinorVersion()
private static void
getNativeLibraryFolderForTheCurrentOS()
(package private) static boolean
getPureJavaFlag()
Deprecated.Pure Java no longer supportedstatic java.lang.String
getVersion()
private static boolean
hasResource(java.lang.String path)
static boolean
initialize()
Loads SQLite native JDBC library.static boolean
isNativeMode()
Checks if the SQLite JDBC driver is set to native mode.static boolean
isPureJavaMode()
Deprecated.Pure Java nolonger supportedprivate static boolean
loadNativeLibrary(java.lang.String path, java.lang.String name)
Loads native library using the given path and name of the library.private static void
loadSQLiteNativeLibrary()
Loads SQLite native library using given path and name of the library.(package private) static java.lang.String
md5sum(java.io.InputStream input)
Computes the MD5 value of the input stream.
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Method Detail
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initialize
public static boolean initialize() throws java.lang.Exception
Loads SQLite native JDBC library.- Returns:
- True if SQLite native library is successfully loaded; false otherwise.
- Throws:
java.lang.Exception
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cleanup
static void cleanup()
Deleted old native libraries e.g. on Windows the DLL file is not removed on VM-Exit (bug #80)
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getPureJavaFlag
static boolean getPureJavaFlag()
Deprecated.Pure Java no longer supported- Returns:
- True if the SQLite JDBC driver is set to pure Java mode; false otherwise.
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isPureJavaMode
public static boolean isPureJavaMode()
Deprecated.Pure Java nolonger supportedChecks if the SQLite JDBC driver is set to pure Java mode.- Returns:
- True if the SQLite JDBC driver is set to pure Java mode; false otherwise.
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isNativeMode
public static boolean isNativeMode() throws java.lang.Exception
Checks if the SQLite JDBC driver is set to native mode.- Returns:
- True if the SQLite JDBC driver is set to native Java mode; false otherwise.
- Throws:
java.lang.Exception
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md5sum
static java.lang.String md5sum(java.io.InputStream input) throws java.io.IOException
Computes the MD5 value of the input stream.- Parameters:
input
- InputStream.- Returns:
- Encrypted string for the InputStream.
- Throws:
java.io.IOException
java.security.NoSuchAlgorithmException
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contentsEquals
private static boolean contentsEquals(java.io.InputStream in1, java.io.InputStream in2) throws java.io.IOException
- Throws:
java.io.IOException
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extractAndLoadLibraryFile
private static boolean extractAndLoadLibraryFile(java.lang.String libFolderForCurrentOS, java.lang.String libraryFileName, java.lang.String targetFolder)
Extracts and loads the specified library file to the target folder- Parameters:
libFolderForCurrentOS
- Library path.libraryFileName
- Library name.targetFolder
- Target folder.- Returns:
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loadNativeLibrary
private static boolean loadNativeLibrary(java.lang.String path, java.lang.String name)
Loads native library using the given path and name of the library.- Parameters:
path
- Path of the native library.name
- Name of the native library.- Returns:
- True for successfully loading; false otherwise.
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loadSQLiteNativeLibrary
private static void loadSQLiteNativeLibrary() throws java.lang.Exception
Loads SQLite native library using given path and name of the library.- Throws:
java.lang.Exception
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hasResource
private static boolean hasResource(java.lang.String path)
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getNativeLibraryFolderForTheCurrentOS
private static void getNativeLibraryFolderForTheCurrentOS()
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getMajorVersion
public static int getMajorVersion()
- Returns:
- The major version of the SQLite JDBC driver.
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getMinorVersion
public static int getMinorVersion()
- Returns:
- The minor version of the SQLite JDBC driver.
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getVersion
public static java.lang.String getVersion()
- Returns:
- The version of the SQLite JDBC driver.
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