public void AutoCleanupCursors()
{
Database db = new Database();
db.Create("ntest.db");
Cursor cursor = new Cursor(db);
// let gc do the cleanup
db.Close(HamConst.HAM_AUTO_CLEANUP);
}
static void Main(string[] args)
{
byte[] key = new byte[5];
byte[] record = new byte[5];
Database db = new Database();
/*
* first, create a new Database
*/
db.Create("test.db");
/*
* now we can insert, delete or lookup values in the Database
*
* for our test program, we just insert a few values, then look them
* up, then delete them and try to look them up again (which will fail).
*/
for (int i = 0; i < LOOP; i++) {
key[0] = (byte)i;
record[0] = (byte)i;
db.Insert(key, record);
}
/*
* now look up all values
*/
for (int i = 0; i < LOOP; i++) {
key[0] = (byte)i;
byte[] r = db.Find(key);
/*
* check if the value is ok
*/
if (r[0] != (byte)i) {
Console.Out.WriteLine("db.Find() returned bad value");
return;
}
}
/*
* close the Database handle, then re-open it (just to demonstrate how
* to open a Database file)
*/
db.Close();
db.Open("test.db");
/*
* now erase all values
*/
for (int i = 0; i < LOOP; i++) {
key[0] = (byte)i;
db.Erase(key);
}
/*
* once more we try to find all values... every db.Find() call must
* now fail with HAM_KEY_NOT_FOUND
*/
for (int i = 0; i < LOOP; i++) {
key[0] = (byte)i;
try {
byte[] r = db.Find(key);
}
catch (DatabaseException e) {
if (e.ErrorCode != HamConst.HAM_KEY_NOT_FOUND) {
Console.Out.WriteLine("db.Find() returned error " + e);
return;
}
}
}
/*
* We're done! No need to close the Database handle - it's closed automatically
*/
Console.Out.WriteLine("Success!");
}
private void SetComparator()
{
Hamster.Environment env = new Hamster.Environment();
Database db = new Database();
byte[] k = new byte[5];
byte[] r = new byte[5];
Parameter[] param = new Parameter[1];
param[0] = new Parameter();
param[0].name = HamConst.HAM_PARAM_KEY_TYPE;
param[0].value = HamConst.HAM_TYPE_CUSTOM;
compareCounter = 0;
try {
env.Create("ntest.db");
db = env.CreateDatabase(1, 0, param);
db.SetCompareFunc(new CompareFunc(MyCompareFunc));
db.Insert(k, r);
k[0] = 1;
db.Insert(k, r);
db.Close();
env.Close();
}
catch (DatabaseException e) {
Assert.Fail("unexpected exception " + e);
}
Assert.AreEqual(1, compareCounter);
}
private void InsertRecNo()
{
Hamster.Environment env = new Hamster.Environment();
Database db = new Database();
byte[] r1 = new byte[5];
byte[] r2;
try
{
env.Create("ntest.db");
db = env.CreateDatabase(1, HamConst.HAM_RECORD_NUMBER);
r1[0] = 1;
var k = db.InsertRecNo(r1);
r2 = db.Find(k);
checkEqual(r1, r2);
r1[0] = 2;
k = db.InsertRecNo(r1);
r2 = db.Find(k);
checkEqual(r1, r2);
r1[0] = 3;
k = db.InsertRecNo(r1);
r2 = db.Find(k);
checkEqual(r1, r2);
}
catch (DatabaseException e)
{
Assert.Fail("unexpected exception " + e);
}
db.Close();
env.Close();
}
private void InsertKeyNegative()
{
Hamster.Environment env = new Hamster.Environment();
Database db = new Database();
byte[] k = new byte[5];
byte[] r = new byte[5];
try {
env.Create("ntest.db");
db = env.CreateDatabase(1);
db.Insert(k, r);
db.Insert(k, r);
}
catch (DatabaseException e) {
Assert.AreEqual(HamConst.HAM_DUPLICATE_KEY, e.ErrorCode);
}
db.Close();
env.Close();
}
private void InsertKey()
{
Hamster.Environment env = new Hamster.Environment();
Database db = new Database();
byte[] k = new byte[5];
byte[] r1 = new byte[5];
byte[] r2;
try {
env.Create("ntest.db");
db = env.CreateDatabase(1);
k[0] = 1;
r1[0] = 1;
db.Insert(k, r1);
r2 = db.Find(k);
checkEqual(r1, r2);
k[0] = 2;
r1[0] = 2;
db.Insert(k, r1);
r2 = db.Find(k);
checkEqual(r1, r2);
k[0] = 3;
r1[0] = 3;
db.Insert(k, r1);
r2 = db.Find(k);
checkEqual(r1, r2);
db.Close();
env.Close();
}
catch (DatabaseException e) {
Assert.Fail("unexpected exception " + e);
}
}
private void FindUnknownKey()
{
Hamster.Environment env = new Hamster.Environment();
Database db = new Database();
byte[] k = new byte[5];
try {
env.Create("ntest.db");
db = env.CreateDatabase(1);
byte[] r = db.Find(k);
}
catch (DatabaseException e) {
Assert.AreEqual(HamConst.HAM_KEY_NOT_FOUND, e.ErrorCode);
}
db.Close();
env.Close();
}
private void EraseKeyTwice()
{
Hamster.Environment env = new Hamster.Environment();
Database db = new Database();
byte[] k = new byte[5];
byte[] r = new byte[5];
env.Create("ntest.db");
db = env.CreateDatabase(1);
db.Insert(k, r);
byte[] r2 = db.Find(k);
checkEqual(r, r2);
db.Erase(k);
try {
db.Erase(k);
}
catch (DatabaseException e) {
Assert.AreEqual(HamConst.HAM_KEY_NOT_FOUND, e.ErrorCode);
}
db.Close();
env.Close();
}
public void InsertKeyOverwrite()
{
Database db = new Database();
byte[] k = new byte[5];
byte[] r = new byte[5];
try {
db.Create("ntest.db");
db.Insert(k, r);
r[0] = 1;
db.Insert(k, r, HamConst.HAM_OVERWRITE);
byte[] r2 = db.Find(k);
checkEqual(r, r2);
db.Close();
}
catch (DatabaseException e) {
Assert.Fail("unexpected exception " + e);
}
}
public void InsertKeyNegative()
{
Database db = new Database();
byte[] k = new byte[5];
byte[] r = new byte[5];
try {
db.Create("ntest.db");
db.Insert(k, r);
db.Insert(k, r);
}
catch (DatabaseException e) {
Assert.AreEqual(HamConst.HAM_DUPLICATE_KEY, e.ErrorCode);
}
db.Close();
}
public void InsertKeyInvalidParam()
{
Database db = new Database();
byte[] k = new byte[5];
byte[] r = new byte[5];
db.Create("ntest.db");
try {
db.Insert(null, r);
}
catch (NullReferenceException) {
}
try {
db.Insert(k, null);
}
catch (NullReferenceException) {
}
try {
db.Insert(k, r, 9999);
}
catch (DatabaseException e) {
Assert.AreEqual(HamConst.HAM_INV_PARAMETER, e.ErrorCode);
}
db.Close();
}
public void InsertKey()
{
Database db = new Database();
byte[] k = new byte[5];
byte[] r1 = new byte[5];
byte[] r2;
try {
db.Create("ntest.db");
k[0] = 1;
r1[0] = 1;
db.Insert(k, r1);
r2 = db.Find(k);
checkEqual(r1, r2);
k[0] = 2;
r1[0] = 2;
db.Insert(k, r1);
r2 = db.Find(k);
checkEqual(r1, r2);
k[0] = 3;
r1[0] = 3;
db.Insert(k, r1);
r2 = db.Find(k);
checkEqual(r1, r2);
db.Close();
}
catch (DatabaseException e) {
Assert.Fail("unexpected exception " + e);
}
}
public void GetKeyCount()
{
Database db = new Database();
db.Create("ntest.db");
byte[] k = new byte[5];
byte[] r = new byte[5];
Assert.AreEqual(0, db.GetKeyCount());
db.Insert(k, r);
Assert.AreEqual(1, db.GetKeyCount());
k[0] = 1;
db.Insert(k, r);
Assert.AreEqual(2, db.GetKeyCount());
db.Close();
}
public void GetError()
{
Database db = new Database();
try {
db.Create(null);
}
catch (DatabaseException e) {
Assert.AreEqual(HamConst.HAM_INV_PARAMETER, e.ErrorCode);
}
Assert.AreEqual(HamConst.HAM_INV_PARAMETER, db.GetLastError());
db.Close();
}
public void Recovery()
{
Database db = new Database();
db.Create("ntest.db", HamConst.HAM_ENABLE_RECOVERY);
byte[] k = new byte[5];
byte[] r = new byte[5];
db.Insert(k, r);
db.Close();
}
private void EraseKeyNegative()
{
Hamster.Environment env = new Hamster.Environment();
Database db = new Database();
byte[] k = new byte[5];
env.Create("ntest.db");
db = env.CreateDatabase(1);
try {
db.Erase(null);
}
catch (NullReferenceException) {
}
db.Close();
env.Close();
}
public void SetDuplicateComparator()
{
Database db = new Database();
byte[] k = new byte[5];
byte[] r = new byte[5];
compareCounter = 0;
try
{
db.Create("ntest.db", HamConst.HAM_ENABLE_DUPLICATES|HamConst.HAM_SORT_DUPLICATES);
db.SetDuplicateCompareFunc(new DuplicateCompareFunc(MyDupeCompareFunc));
db.Insert(k, r);
r[0] = 1;
db.Insert(k, r, HamConst.HAM_DUPLICATE);
db.Close();
}
catch (DatabaseException e)
{
Assert.Fail("unexpected exception " + e);
}
Assert.AreEqual(1, compareCounter);
}
private void FindKeyNull()
{
Hamster.Environment env = new Hamster.Environment();
Database db = new Database();
try {
env.Create("ntest.db");
db = env.CreateDatabase(1);
byte[] r = db.Find(null);
}
catch (NullReferenceException) {
}
db.Close();
env.Close();
}
public void SetPrefixComparator()
{
Database db = new Database();
byte[] k = new byte[25];
byte[] r = new byte[25];
compareCounter = 0;
try {
db.Create("ntest.db");
db.SetPrefixCompareFunc(new
PrefixCompareFunc(MyPrefixCompareFunc));
db.Insert(k, r);
k[0] = 1;
db.Insert(k, r);
db.Close();
}
catch (DatabaseException e) {
Assert.Fail("unexpected exception " + e);
}
Assert.AreEqual(1, compareCounter);
}
private void GetKeyCount()
{
Hamster.Environment env = new Hamster.Environment();
Database db = new Database();
env.Create("ntest.db");
db = env.CreateDatabase(1);
byte[] k = new byte[5];
byte[] r = new byte[5];
Assert.AreEqual(0, db.GetKeyCount());
db.Insert(k, r);
Assert.AreEqual(1, db.GetKeyCount());
k[0] = 1;
db.Insert(k, r);
Assert.AreEqual(2, db.GetKeyCount());
db.Close();
env.Close();
}
public void AutoCleanupCursors4()
{
Database db = new Database();
db.Create("ntest.db");
Cursor cursor1 = new Cursor(db);
Cursor cursor2 = cursor1.Clone();
Cursor cursor3 = cursor1.Clone();
Cursor cursor4 = cursor1.Clone();
Cursor cursor5 = cursor1.Clone();
cursor3.Close();
cursor5.Close();
// let gc do the cleanup
db.Close(HamConst.HAM_AUTO_CLEANUP);
}
private void InsertKeyInvalidParam()
{
Hamster.Environment env = new Hamster.Environment();
Database db = new Database();
byte[] k = new byte[5];
byte[] r = new byte[5];
env.Create("ntest.db");
db = env.CreateDatabase(1);
try {
db.Insert(null, r);
}
catch (NullReferenceException) {
}
try {
db.Insert(k, null);
}
catch (NullReferenceException) {
}
try {
db.Insert(k, r, 9999);
}
catch (DatabaseException e) {
Assert.AreEqual(HamConst.HAM_INV_PARAMETER, e.ErrorCode);
}
db.Close();
env.Close();
}
public void CreateInvalidParameter()
{
Database db = new Database();
Parameter[] param = new Parameter[3];
param[1] = new Parameter();
param[2] = new Parameter();
try {
db.Create("ntest.db", 0, 0, param);
db.Close();
}
catch (DatabaseException e) {
Assert.AreEqual(HamConst.HAM_INV_PARAMETER, e.ErrorCode);
}
}
private void InsertKeyOverwrite()
{
Hamster.Environment env = new Hamster.Environment();
Database db = new Database();
byte[] k = new byte[5];
byte[] r = new byte[5];
try {
env.Create("ntest.db");
db = env.CreateDatabase(1);
db.Insert(k, r);
r[0] = 1;
db.Insert(k, r, HamConst.HAM_OVERWRITE);
byte[] r2 = db.Find(k);
checkEqual(r, r2);
db.Close();
env.Close();
}
catch (DatabaseException e) {
Assert.Fail("unexpected exception " + e);
}
}
private void CreateInvalidParameter()
{
Hamster.Environment env = new Hamster.Environment();
Database db = new Database();
Parameter[] param = new Parameter[3];
param[1] = new Parameter();
param[2] = new Parameter();
try {
env.Create("ntest.db");
db = env.CreateDatabase(1, 0, param);
db.Close();
env.Close();
}
catch (DatabaseException e) {
Assert.AreEqual(HamConst.HAM_INV_PARAMETER, e.ErrorCode);
}
}
private void Recovery()
{
Hamster.Environment env = new Hamster.Environment();
Database db = new Database();
env.Create("ntest.db", HamConst.HAM_ENABLE_RECOVERY);
db = env.CreateDatabase(1);
byte[] k = new byte[5];
byte[] r = new byte[5];
db.Insert(k, r);
db.Close();
env.Close();
}
private void CreateString()
{
Database db = new Database();
Hamster.Environment env = new Hamster.Environment();
try {
env.Create("ntest.db");
db = env.CreateDatabase(1);
db.Close();
env.Close();
env.Open("ntest.db");
db = env.OpenDatabase(1);
db.Close();
env.Close();
}
catch (DatabaseException e) {
Assert.Fail("Unexpected exception " + e);
}
}
private void ApproxMatching()
{
Hamster.Environment env = new Hamster.Environment();
Database db = new Database();
byte[] k1 = new byte[5];
byte[] r1 = new byte[5];
k1[0] = 1; r1[0] = 1;
byte[] k2 = new byte[5];
byte[] r2 = new byte[5];
k2[0] = 2; r2[0] = 2;
byte[] k3 = new byte[5];
byte[] r3 = new byte[5];
k3[0] = 3; r3[0] = 3;
try
{
env.Create("ntest.db");
db = env.CreateDatabase(1);
db.Insert(k1, r1);
db.Insert(k2, r2);
db.Insert(k3, r3);
Cursor c = new Cursor(db);
byte[] r = c.Find(k2, HamConst.HAM_FIND_GT_MATCH);
checkEqual(r, r3);
checkEqual(k2, k3);
k2[0] = 2;
r = c.Find(k2, HamConst.HAM_FIND_GT_MATCH);
checkEqual(r, r1);
checkEqual(k2, k1);
db.Close();
env.Close();
}
catch (DatabaseException e)
{
Assert.Fail("unexpected exception " + e);
}
}
private void DatabaseClose()
{
Database db = new Database();
try {
db.Close();
}
catch (DatabaseException e) {
Assert.Fail("Unexpected exception " + e);
}
}
public override void Finish()
{
database.Close();
enviroment.Close();
}
public void GetEnvironment()
{
Database db = new Database();
db.Create("ntest.db");
Hamster.Environment env = db.GetEnvironment();
Assert.AreNotEqual(0, env.GetHandle());
db.Close();
}