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org.sqlite.core.NativeDB Maven / Gradle / Ivy
/*
* Copyright (c) 2007 David Crawshaw
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
package org.sqlite.core;
import java.sql.SQLException;
import org.sqlite.Function;
import org.sqlite.SQLiteJDBCLoader;
/** This class provides a thin JNI layer over the SQLite3 C API. */
public final class NativeDB extends DB
{
/** SQLite connection handle. */
long pointer = 0;
private static boolean isLoaded;
private static boolean loadSucceeded;
static {
if ("The Android Project".equals(System.getProperty("java.vm.vendor"))) {
System.loadLibrary("sqlitejdbc");
isLoaded = true;
loadSucceeded = true;
} else {
// continue with non Android execution path
isLoaded = false;
loadSucceeded = false;
}
}
/**
* Loads the SQLite interface backend.
* @return True if the SQLite JDBC driver is successfully loaded; false otherwise.
*/
public static boolean load() throws Exception {
if (isLoaded)
return loadSucceeded == true;
loadSucceeded = SQLiteJDBCLoader.initialize();
isLoaded = true;
return loadSucceeded;
}
/** linked list of all instanced UDFDatas */
private final long udfdatalist = 0;
// WRAPPER FUNCTIONS ////////////////////////////////////////////
/**
* @see org.sqlite.core.DB#_open(java.lang.String, int)
*/
@Override
protected native synchronized void _open(String file, int openFlags) throws SQLException;
/**
* @see org.sqlite.core.DB#_close()
*/
@Override
protected native synchronized void _close() throws SQLException;
/**
* @see org.sqlite.core.DB#_exec(java.lang.String)
*/
@Override
public native synchronized int _exec(String sql) throws SQLException;
/**
* @see org.sqlite.core.DB#shared_cache(boolean)
*/
@Override
public native synchronized int shared_cache(boolean enable);
/**
* @see org.sqlite.core.DB#enable_load_extension(boolean)
*/
@Override
public native synchronized int enable_load_extension(boolean enable);
/**
* @see org.sqlite.core.DB#interrupt()
*/
@Override
public native void interrupt();
/**
* @see org.sqlite.core.DB#busy_timeout(int)
*/
@Override
public native synchronized void busy_timeout(int ms);
/**
* @see org.sqlite.core.DB#prepare(java.lang.String)
*/
//native synchronized void exec(String sql) throws SQLException;
@Override
protected native synchronized long prepare(String sql) throws SQLException;
/**
* @see org.sqlite.core.DB#errmsg()
*/
@Override
native synchronized String errmsg();
/**
* @see org.sqlite.core.DB#libversion()
*/
@Override
public native synchronized String libversion();
/**
* @see org.sqlite.core.DB#changes()
*/
@Override
public native synchronized int changes();
/**
* @see org.sqlite.core.DB#total_changes()
*/
@Override
public native synchronized int total_changes();
/**
* @see org.sqlite.core.DB#finalize(long)
*/
@Override
protected native synchronized int finalize(long stmt);
/**
* @see org.sqlite.core.DB#step(long)
*/
@Override
public native synchronized int step(long stmt);
/**
* @see org.sqlite.core.DB#reset(long)
*/
@Override
public native synchronized int reset(long stmt);
/**
* @see org.sqlite.core.DB#clear_bindings(long)
*/
@Override
public native synchronized int clear_bindings(long stmt);
/**
* @see org.sqlite.core.DB#bind_parameter_count(long)
*/
@Override
native synchronized int bind_parameter_count(long stmt);
/**
* @see org.sqlite.core.DB#column_count(long)
*/
@Override
public native synchronized int column_count(long stmt);
/**
* @see org.sqlite.core.DB#column_type(long, int)
*/
@Override
public native synchronized int column_type(long stmt, int col);
/**
* @see org.sqlite.core.DB#column_decltype(long, int)
*/
@Override
public native synchronized String column_decltype(long stmt, int col);
/**
* @see org.sqlite.core.DB#column_table_name(long, int)
*/
@Override
public native synchronized String column_table_name(long stmt, int col);
/**
* @see org.sqlite.core.DB#column_name(long, int)
*/
@Override
public native synchronized String column_name(long stmt, int col);
/**
* @see org.sqlite.core.DB#column_text(long, int)
*/
@Override
public native synchronized String column_text(long stmt, int col);
/**
* @see org.sqlite.core.DB#column_blob(long, int)
*/
@Override
public native synchronized byte[] column_blob(long stmt, int col);
/**
* @see org.sqlite.core.DB#column_double(long, int)
*/
@Override
public native synchronized double column_double(long stmt, int col);
/**
* @see org.sqlite.core.DB#column_long(long, int)
*/
@Override
public native synchronized long column_long(long stmt, int col);
/**
* @see org.sqlite.core.DB#column_int(long, int)
*/
@Override
public native synchronized int column_int(long stmt, int col);
/**
* @see org.sqlite.core.DB#bind_null(long, int)
*/
@Override
native synchronized int bind_null(long stmt, int pos);
/**
* @see org.sqlite.core.DB#bind_int(long, int, int)
*/
@Override
native synchronized int bind_int(long stmt, int pos, int v);
/**
* @see org.sqlite.core.DB#bind_long(long, int, long)
*/
@Override
native synchronized int bind_long(long stmt, int pos, long v);
/**
* @see org.sqlite.core.DB#bind_double(long, int, double)
*/
@Override
native synchronized int bind_double(long stmt, int pos, double v);
/**
* @see org.sqlite.core.DB#bind_text(long, int, java.lang.String)
*/
@Override
native synchronized int bind_text(long stmt, int pos, String v);
/**
* @see org.sqlite.core.DB#bind_blob(long, int, byte[])
*/
@Override
native synchronized int bind_blob(long stmt, int pos, byte[] v);
/**
* @see org.sqlite.core.DB#result_null(long)
*/
@Override
public native synchronized void result_null(long context);
/**
* @see org.sqlite.core.DB#result_text(long, java.lang.String)
*/
@Override
public native synchronized void result_text(long context, String val);
/**
* @see org.sqlite.core.DB#result_blob(long, byte[])
*/
@Override
public native synchronized void result_blob(long context, byte[] val);
/**
* @see org.sqlite.core.DB#result_double(long, double)
*/
@Override
public native synchronized void result_double(long context, double val);
/**
* @see org.sqlite.core.DB#result_long(long, long)
*/
@Override
public native synchronized void result_long(long context, long val);
/**
* @see org.sqlite.core.DB#result_int(long, int)
*/
@Override
public native synchronized void result_int(long context, int val);
/**
* @see org.sqlite.core.DB#result_error(long, java.lang.String)
*/
@Override
public native synchronized void result_error(long context, String err);
/**
* @see org.sqlite.core.DB#value_bytes(org.sqlite.Function, int)
*/
@Override
public native synchronized int value_bytes(Function f, int arg);
/**
* @see org.sqlite.core.DB#value_text(org.sqlite.Function, int)
*/
@Override
public native synchronized String value_text(Function f, int arg);
/**
* @see org.sqlite.core.DB#value_blob(org.sqlite.Function, int)
*/
@Override
public native synchronized byte[] value_blob(Function f, int arg);
/**
* @see org.sqlite.core.DB#value_double(org.sqlite.Function, int)
*/
@Override
public native synchronized double value_double(Function f, int arg);
/**
* @see org.sqlite.core.DB#value_long(org.sqlite.Function, int)
*/
@Override
public native synchronized long value_long(Function f, int arg);
/**
* @see org.sqlite.core.DB#value_int(org.sqlite.Function, int)
*/
@Override
public native synchronized int value_int(Function f, int arg);
/**
* @see org.sqlite.core.DB#value_type(org.sqlite.Function, int)
*/
@Override
public native synchronized int value_type(Function f, int arg);
/**
* @see org.sqlite.core.DB#create_function(java.lang.String, org.sqlite.Function)
*/
@Override
public native synchronized int create_function(String name, Function func);
/**
* @see org.sqlite.core.DB#destroy_function(java.lang.String)
*/
@Override
public native synchronized int destroy_function(String name);
/**
* @see org.sqlite.core.DB#free_functions()
*/
@Override
native synchronized void free_functions();
/**
* @see org.sqlite.core.DB#backup(java.lang.String, java.lang.String, org.sqlite.core.DB.ProgressObserver)
*/
@Override
public native synchronized int backup(String dbName, String destFileName, ProgressObserver observer) throws SQLException;
/**
* @see org.sqlite.core.DB#restore(java.lang.String, java.lang.String,
* org.sqlite.core.DB.ProgressObserver)
*/
@Override
public native synchronized int restore(String dbName, String sourceFileName, ProgressObserver observer)
throws SQLException;
// COMPOUND FUNCTIONS (for optimisation) /////////////////////////
/**
* Provides metadata for table columns.
* @returns For each column returns:
