//
// Copyright (c) 2009-2011 Krueger Systems, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
//
#if WINDOWS_PHONE
#define USE_CSHARP_SQLITE
#endif
using System;
using System.Runtime.InteropServices;
using System.Collections.Generic;
using System.Reflection;
using System.Linq;
using System.Linq.Expressions;
#if USE_CSHARP_SQLITE
using Community.CsharpSqlite;
using Sqlite3DatabaseHandle = Community.CsharpSqlite.Sqlite3.sqlite3;
using Sqlite3Statement = Community.CsharpSqlite.Sqlite3.Vdbe;
#else
using Sqlite3DatabaseHandle = System.IntPtr;
using Sqlite3Statement = System.IntPtr;
#endif
namespace SQLite
{
public class SQLiteException : System.Exception
{
public SQLite3.Result Result { get; private set; }
protected SQLiteException (SQLite3.Result r,string message) : base(message)
{
Result = r;
}
public static SQLiteException New (SQLite3.Result r, string message)
{
return new SQLiteException (r, message);
}
}
[Flags]
public enum SQLiteOpenFlags {
ReadOnly = 1, ReadWrite = 2, Create = 4,
NoMutex = 0x8000, FullMutex = 0x10000,
SharedCache = 0x20000, PrivateCache = 0x40000,
ProtectionComplete = 0x00100000,
ProtectionCompleteUnlessOpen = 0x00200000,
ProtectionCompleteUntilFirstUserAuthentication = 0x00300000,
ProtectionNone = 0x00400000
}
///
/// Represents an open connection to a SQLite database.
///
public class SQLiteConnection : IDisposable
{
private bool _open;
private TimeSpan _busyTimeout;
private Dictionary _mappings = null;
private Dictionary _tables = null;
private System.Diagnostics.Stopwatch _sw;
private long _elapsedMilliseconds = 0;
public Sqlite3DatabaseHandle Handle { get; private set; }
#if USE_CSHARP_SQLITE
internal static readonly Sqlite3DatabaseHandle NullHandle = null;
#else
internal static readonly Sqlite3DatabaseHandle NullHandle = IntPtr.Zero;
#endif
public string DatabasePath { get; private set; }
public bool TimeExecution { get; set; }
public bool Trace { get; set; }
///
/// Constructs a new SQLiteConnection and opens a SQLite database specified by databasePath.
///
///
/// Specifies the path to the database file.
///
public SQLiteConnection (string databasePath)
{
DatabasePath = databasePath;
Sqlite3DatabaseHandle handle;
var r = SQLite3.Open (DatabasePath, out handle);
Handle = handle;
if (r != SQLite3.Result.OK) {
throw SQLiteException.New (r, "Could not open database file: " + DatabasePath);
}
_open = true;
BusyTimeout = TimeSpan.FromSeconds (0.1);
}
///
/// Constructs a new SQLiteConnection and opens a SQLite database specified by databasePath.
///
///
/// Specifies the path to the database file.
///
public SQLiteConnection (string databasePath, SQLiteOpenFlags openFlags)
{
DatabasePath = databasePath;
Sqlite3DatabaseHandle handle;
var r = SQLite3.Open (DatabasePath, out handle, (int) openFlags, IntPtr.Zero);
Handle = handle;
if (r != SQLite3.Result.OK) {
throw SQLiteException.New (r, "Could not open database file: " + DatabasePath);
}
_open = true;
BusyTimeout = TimeSpan.FromSeconds (0.1);
}
static SQLiteConnection ()
{
if (_preserveDuringLinkMagic) {
var ti = new TableInfo ();
ti.name = "magic";
}
}
///
/// Used to list some code that we want the MonoTouch linker
/// to see, but that we never want to actually execute.
///
static bool _preserveDuringLinkMagic = false;
///
/// Sets a busy handler to sleep the specified amount of time when a table is locked.
/// The handler will sleep multiple times until a total time of has accumulated.
///
public TimeSpan BusyTimeout {
get { return _busyTimeout; }
set {
_busyTimeout = value;
if (Handle != NullHandle) {
SQLite3.BusyTimeout (Handle, (int)_busyTimeout.TotalMilliseconds);
}
}
}
///
/// Returns the mappings from types to tables that the connection
/// currently understands.
///
public IEnumerable TableMappings {
get {
if (_tables == null) {
return Enumerable.Empty ();
} else {
return _tables.Values;
}
}
}
///
/// Retrieves the mapping that is automatically generated for the given type.
///
///
/// The type whose mapping to the database is returned.
///
///
/// The mapping represents the schema of the columns of the database and contains
/// methods to set and get properties of objects.
///
public TableMapping GetMapping (Type type)
{
if (_mappings == null) {
_mappings = new Dictionary ();
}
TableMapping map;
if (!_mappings.TryGetValue (type.FullName, out map)) {
map = new TableMapping (type);
_mappings [type.FullName] = map;
}
return map;
}
///
/// Executes a "create table if not exists" on the database. It also
/// creates any specified indexes on the columns of the table. It uses
/// a schema automatically generated from the specified type. You can
/// later access this schema by calling GetMapping.
///
///
/// The number of entries added to the database schema.
///
public int CreateTable ()
{
var ty = typeof(T);
if (_tables == null) {
_tables = new Dictionary ();
}
TableMapping map;
if (!_tables.TryGetValue (ty.FullName, out map)) {
map = GetMapping (ty);
_tables.Add (ty.FullName, map);
}
var query = "create table if not exists \"" + map.TableName + "\"(\n";
var decls = map.Columns.Select (p => Orm.SqlDecl (p));
var decl = string.Join (",\n", decls.ToArray ());
query += decl;
query += ")";
var count = Execute (query);
if (count == 0) { //Possible bug: This always seems to return 0?
// Table already exists, migrate it
MigrateTable (map);
}
foreach (var p in map.Columns.Where (x => x.IsIndexed)) {
var indexName = map.TableName + "_" + p.Name;
var q = string.Format ("create index if not exists \"{0}\" on \"{1}\"(\"{2}\")", indexName, map.TableName, p.Name);
count += Execute (q);
}
return count;
}
public class TableInfo
{
public int cid { get; set; }
public string name { get; set; }
public string type { get; set; }
public int notnull { get; set; }
public string dflt_value { get; set; }
public int pk { get; set; }
}
void MigrateTable (TableMapping map)
{
var query = "pragma table_info(\"" + map.TableName + "\")";
var existingCols = Query (query);
var toBeAdded = new List ();
foreach (var p in map.Columns) {
var found = false;
foreach (var c in existingCols) {
found = p.Name == c.name;
if (found)
break;
}
if (!found) {
toBeAdded.Add (p);
}
}
foreach (var p in toBeAdded) {
var addCol = "alter table \"" + map.TableName + "\" add column " + Orm.SqlDecl (p);
Execute (addCol);
}
}
///
/// Creates a new SQLiteCommand given the command text with arguments. Place a '?'
/// in the command text for each of the arguments.
///
///
/// The fully escaped SQL.
///
///
/// Arguments to substitute for the occurences of '?' in the command text.
///
///
/// A
///
public SQLiteCommand CreateCommand (string cmdText, params object[] ps)
{
if (!_open) {
throw SQLiteException.New (SQLite3.Result.Error, "Cannot create commands from unopened database");
} else {
var cmd = new SQLiteCommand (this);
cmd.CommandText = cmdText;
foreach (var o in ps) {
cmd.Bind (o);
}
return cmd;
}
}
///
/// Creates a SQLiteCommand given the command text (SQL) with arguments. Place a '?'
/// in the command text for each of the arguments and then executes that command.
/// Use this method instead of Query when you don't expect rows back. Such cases include
/// INSERTs, UPDATEs, and DELETEs.
/// You can set the Trace or TimeExecution properties of the connection
/// to profile execution.
///
///
/// The fully escaped SQL.
///
///
/// Arguments to substitute for the occurences of '?' in the query.
///
///
/// The number of rows modified in the database as a result of this execution.
///
public int Execute (string query, params object[] args)
{
var cmd = CreateCommand (query, args);
if (TimeExecution) {
if (_sw == null) {
_sw = new System.Diagnostics.Stopwatch ();
}
_sw.Reset ();
_sw.Start ();
}
int r = cmd.ExecuteNonQuery ();
if (TimeExecution) {
_sw.Stop ();
_elapsedMilliseconds += _sw.ElapsedMilliseconds;
Console.WriteLine ("Finished in {0} ms ({1:0.0} s total)", _sw.ElapsedMilliseconds, _elapsedMilliseconds / 1000.0);
}
return r;
}
///
/// Creates a SQLiteCommand given the command text (SQL) with arguments. Place a '?'
/// in the command text for each of the arguments and then executes that command.
/// It returns each row of the result using the mapping automatically generated for
/// the given type.
///
///
/// The fully escaped SQL.
///
///
/// Arguments to substitute for the occurences of '?' in the query.
///
///
/// An enumerable with one result for each row returned by the query.
///
public List Query (string query, params object[] args) where T : new()
{
var cmd = CreateCommand (query, args);
return cmd.ExecuteQuery ();
}
///
/// Creates a SQLiteCommand given the command text (SQL) with arguments. Place a '?'
/// in the command text for each of the arguments and then executes that command.
/// It returns each row of the result using the mapping automatically generated for
/// the given type.
///
///
/// The fully escaped SQL.
///
///
/// Arguments to substitute for the occurences of '?' in the query.
///
///
/// An enumerable with one result for each row returned by the query.
/// The enumerator will call sqlite3_step on each call to MoveNext, so the database
/// connection must remain open for the lifetime of the enumerator.
///
public IEnumerable DeferredQuery(string query, params object[] args) where T : new()
{
var cmd = CreateCommand(query, args);
return cmd.ExecuteDeferredQuery();
}
///
/// Creates a SQLiteCommand given the command text (SQL) with arguments. Place a '?'
/// in the command text for each of the arguments and then executes that command.
/// It returns each row of the result using the specified mapping. This function is
/// only used by libraries in order to query the database via introspection. It is
/// normally not used.
///
///
/// A to use to convert the resulting rows
/// into objects.
///
///
/// The fully escaped SQL.
///
///
/// Arguments to substitute for the occurences of '?' in the query.
///
///
/// An enumerable with one result for each row returned by the query.
///
public List Query (TableMapping map, string query, params object[] args)
{
var cmd = CreateCommand (query, args);
return cmd.ExecuteQuery (map);
}
///
/// Creates a SQLiteCommand given the command text (SQL) with arguments. Place a '?'
/// in the command text for each of the arguments and then executes that command.
/// It returns each row of the result using the specified mapping. This function is
/// only used by libraries in order to query the database via introspection. It is
/// normally not used.
///
///
/// A to use to convert the resulting rows
/// into objects.
///
///
/// The fully escaped SQL.
///
///
/// Arguments to substitute for the occurences of '?' in the query.
///
///
/// An enumerable with one result for each row returned by the query.
/// The enumerator will call sqlite3_step on each call to MoveNext, so the database
/// connection must remain open for the lifetime of the enumerator.
///
public IEnumerable DeferredQuery(TableMapping map, string query, params object[] args)
{
var cmd = CreateCommand(query, args);
return cmd.ExecuteDeferredQuery(map);
}
///
/// Returns a queryable interface to the table represented by the given type.
///
///
/// A queryable object that is able to translate Where, OrderBy, and Take
/// queries into native SQL.
///
public TableQuery Table () where T : new()
{
return new TableQuery (this);
}
///
/// Attempts to retrieve an object with the given primary key from the table
/// associated with the specified type. Use of this method requires that
/// the given type have a designated PrimaryKey (using the PrimaryKeyAttribute).
///
///
/// The primary key.
///
///
/// The object with the given primary key. Throws a not found exception
/// if the object is not found.
///
public T Get (object pk) where T : new()
{
var map = GetMapping (typeof(T));
string query = string.Format ("select * from \"{0}\" where \"{1}\" = ?", map.TableName, map.PK.Name);
return Query (query, pk).First ();
}
///
/// Whether has been called and the database is waiting for a .
///
public bool IsInTransaction { get; private set; }
///
/// Begins a new transaction. Call to end the transaction.
///
public void BeginTransaction ()
{
if (!IsInTransaction) {
Execute ("begin transaction");
IsInTransaction = true;
}
}
///
/// Rolls back the transaction that was begun by .
///
public void Rollback ()
{
if (IsInTransaction) {
Execute ("rollback");
IsInTransaction = false;
}
}
///
/// Commits the transaction that was begun by .
///
public void Commit ()
{
if (IsInTransaction) {
Execute ("commit");
IsInTransaction = false;
}
}
///
/// Executes within a transaction and automatically rollsback the transaction
/// if an exception occurs. The exception is rethrown.
///
///
/// The to perform within a transaction. can contain any number
/// of operations on the connection but should never call ,
/// , or .
///
public void RunInTransaction (Action action)
{
if (IsInTransaction) {
throw new InvalidOperationException ("The connection must not already be in a transaction when RunInTransaction is called");
}
try {
BeginTransaction ();
action ();
Commit ();
} catch (Exception) {
Rollback ();
throw;
}
}
///
/// Inserts all specified objects.
///
///
/// An of the objects to insert.
///
///
/// The number of rows added to the table.
///
public int InsertAll (System.Collections.IEnumerable objects)
{
BeginTransaction ();
var c = 0;
foreach (var r in objects) {
c += Insert (r);
}
Commit ();
return c;
}
///
/// Inserts the given object and retrieves its
/// auto incremented primary key if it has one.
///
///
/// The object to insert.
///
///
/// The number of rows added to the table.
///
public int Insert (object obj)
{
if (obj == null) {
return 0;
}
return Insert (obj, "", obj.GetType ());
}
public int Insert (object obj, Type objType)
{
return Insert (obj, "", objType);
}
public int Insert (object obj, string extra)
{
if (obj == null) {
return 0;
}
return Insert (obj, extra, obj.GetType ());
}
///
/// Inserts the given object and retrieves its
/// auto incremented primary key if it has one.
///
///
/// The object to insert.
///
///
/// Literal SQL code that gets placed into the command. INSERT {extra} INTO ...
///
///
/// The number of rows added to the table.
///
public int Insert (object obj, string extra, Type objType)
{
if (obj == null || objType == null) {
return 0;
}
var map = GetMapping (objType);
var cols = map.InsertColumns;
var vals = new object[cols.Length];
for (var i = 0; i < vals.Length; i++) {
vals [i] = cols [i].GetValue (obj);
}
var insertCmd = map.GetInsertCommand (this, extra);
var count = insertCmd.ExecuteNonQuery (vals);
if (map.HasAutoIncPK) {
var id = SQLite3.LastInsertRowid (Handle);
map.SetAutoIncPK (obj, id);
}
return count;
}
///
/// Updates all of the columns of a table using the specified object
/// except for its primary key.
/// The object is required to have a primary key.
///
///
/// The object to update. It must have a primary key designated using the PrimaryKeyAttribute.
///
///
/// The number of rows updated.
///
public int Update (object obj)
{
if (obj == null) {
return 0;
}
return Update (obj, obj.GetType ());
}
public int Update (object obj, Type objType)
{
if (obj == null || objType == null) {
return 0;
}
var map = GetMapping (objType);
var pk = map.PK;
if (pk == null) {
throw new NotSupportedException ("Cannot update " + map.TableName + ": it has no PK");
}
var cols = from p in map.Columns
where p != pk
select p;
var vals = from c in cols
select c.GetValue (obj);
var ps = new List (vals);
ps.Add (pk.GetValue (obj));
var q = string.Format ("update \"{0}\" set {1} where {2} = ? ", map.TableName, string.Join (",", (from c in cols
select "\"" + c.Name + "\" = ? ").ToArray ()), pk.Name);
return Execute (q, ps.ToArray ());
}
///
/// Deletes the given object from the database using its primary key.
///
///
/// The object to delete. It must have a primary key designated using the PrimaryKeyAttribute.
///
///
/// The number of rows deleted.
///
public int Delete (T obj)
{
var map = GetMapping (obj.GetType ());
var pk = map.PK;
if (pk == null) {
throw new NotSupportedException ("Cannot delete " + map.TableName + ": it has no PK");
}
var q = string.Format ("delete from \"{0}\" where \"{1}\" = ?", map.TableName, pk.Name);
return Execute (q, pk.GetValue (obj));
}
public void Dispose ()
{
Close ();
}
public void Close ()
{
if (_open && Handle != NullHandle) {
try {
foreach (var sqlInsertCommand in _mappings.Values) {
sqlInsertCommand.Dispose();
}
var r = SQLite3.Close(Handle);
if (r != SQLite3.Result.OK) {
string msg = SQLite3.GetErrmsg(Handle);
throw SQLiteException.New(r, msg);
}
}
finally {
Handle = NullHandle;
_open = false;
}
}
}
}
public class PrimaryKeyAttribute : Attribute
{
}
public class AutoIncrementAttribute : Attribute
{
}
public class IndexedAttribute : Attribute
{
}
public class IgnoreAttribute : Attribute
{
}
public class MaxLengthAttribute : Attribute
{
public int Value { get; private set; }
public MaxLengthAttribute (int length)
{
Value = length;
}
}
public class CollationAttribute: Attribute
{
public string Value { get; private set; }
public CollationAttribute (string collation)
{
Value = collation;
}
}
public class TableMapping
{
public Type MappedType { get; private set; }
public string TableName { get; private set; }
public Column[] Columns { get; private set; }
public Column PK { get; private set; }
Column _autoPk = null;
Column[] _insertColumns = null;
public TableMapping (Type type)
{
MappedType = type;
TableName = MappedType.Name;
var props = MappedType.GetProperties (BindingFlags.Public | BindingFlags.Instance | BindingFlags.SetProperty);
var cols = new List ();
foreach (var p in props) {
var ignore = p.GetCustomAttributes (typeof(IgnoreAttribute), true).Length > 0;
if (p.CanWrite && !ignore) {
cols.Add (new PropColumn (p));
}
}
Columns = cols.ToArray ();
foreach (var c in Columns) {
if (c.IsAutoInc && c.IsPK) {
_autoPk = c;
}
if (c.IsPK) {
PK = c;
}
}
HasAutoIncPK = _autoPk != null;
}
public bool HasAutoIncPK { get; private set; }
public void SetAutoIncPK (object obj, long id)
{
if (_autoPk != null) {
_autoPk.SetValue (obj, Convert.ChangeType (id, _autoPk.ColumnType, null));
}
}
public Column[] InsertColumns {
get {
if (_insertColumns == null) {
_insertColumns = Columns.Where (c => !c.IsAutoInc).ToArray ();
}
return _insertColumns;
}
}
public Column FindColumn (string name)
{
var exact = Columns.Where (c => c.Name == name).FirstOrDefault ();
return exact;
}
PreparedSqlLiteInsertCommand _insertCommand;
string _insertCommandExtra = null;
public PreparedSqlLiteInsertCommand GetInsertCommand(SQLiteConnection conn, string extra)
{
if (_insertCommand == null) {
_insertCommand = CreateInsertCommand(conn, extra);
_insertCommandExtra = extra;
}
else if (_insertCommandExtra != extra) {
_insertCommand.Dispose();
_insertCommand = CreateInsertCommand(conn, extra);
_insertCommandExtra = extra;
}
return _insertCommand;
}
private PreparedSqlLiteInsertCommand CreateInsertCommand(SQLiteConnection conn, string extra)
{
var cols = InsertColumns;
var insertSql = string.Format ("insert {3} into \"{0}\"({1}) values ({2})", TableName,
string.Join (",", (from c in cols
select "\"" + c.Name + "\"").ToArray ()),
string.Join (",", (from c in cols
select "?").ToArray ()), extra);
var insertCommand = new PreparedSqlLiteInsertCommand(conn);
insertCommand.CommandText = insertSql;
return insertCommand;
}
protected internal void Dispose()
{
if (_insertCommand != null) {
_insertCommand.Dispose();
_insertCommand = null;
}
}
public abstract class Column
{
public string Name { get; protected set; }
public Type ColumnType { get; protected set; }
public string Collation { get; protected set; }
public bool IsAutoInc { get; protected set; }
public bool IsPK { get; protected set; }
public bool IsIndexed { get; protected set; }
public bool IsNullable { get; protected set; }
public int MaxStringLength { get; protected set; }
public abstract void SetValue (object obj, object val);
public abstract object GetValue (object obj);
}
public class PropColumn : Column
{
PropertyInfo _prop;
public PropColumn (PropertyInfo prop)
{
_prop = prop;
Name = prop.Name;
//If this type is Nullable then Nullable.GetUnderlyingType returns the T, otherwise it returns null, so get the the actual type instead
ColumnType = Nullable.GetUnderlyingType(prop.PropertyType) ?? prop.PropertyType;
Collation = Orm.Collation (prop);
IsAutoInc = Orm.IsAutoInc (prop);
IsPK = Orm.IsPK (prop);
IsIndexed = Orm.IsIndexed (prop);
IsNullable = !IsPK;
MaxStringLength = Orm.MaxStringLength (prop);
}
public override void SetValue (object obj, object val)
{
_prop.SetValue (obj, val, null);
}
public override object GetValue (object obj)
{
return _prop.GetValue (obj, null);
}
}
}
public static class Orm
{
public const int DefaultMaxStringLength = 140;
public static string SqlDecl (TableMapping.Column p)
{
string decl = "\"" + p.Name + "\" " + SqlType (p) + " ";
if (p.IsPK) {
decl += "primary key ";
}
if (p.IsAutoInc) {
decl += "autoincrement ";
}
if (!p.IsNullable) {
decl += "not null ";
}
if (!string.IsNullOrEmpty (p.Collation)) {
decl += "collate " + p.Collation + " ";
}
return decl;
}
public static string SqlType (TableMapping.Column p)
{
var clrType = p.ColumnType;
if (clrType == typeof(Boolean) || clrType == typeof(Byte) || clrType == typeof(UInt16) || clrType == typeof(SByte) || clrType == typeof(Int16) || clrType == typeof(Int32)) {
return "integer";
} else if (clrType == typeof(UInt32) || clrType == typeof(Int64)) {
return "bigint";
} else if (clrType == typeof(Single) || clrType == typeof(Double) || clrType == typeof(Decimal)) {
return "float";
} else if (clrType == typeof(String)) {
int len = p.MaxStringLength;
return "varchar(" + len + ")";
} else if (clrType == typeof(DateTime)) {
return "datetime";
} else if (clrType.IsEnum) {
return "integer";
} else if (clrType == typeof(byte[])) {
return "blob";
} else {
throw new NotSupportedException ("Don't know about " + clrType);
}
}
public static bool IsPK (MemberInfo p)
{
var attrs = p.GetCustomAttributes (typeof(PrimaryKeyAttribute), true);
return attrs.Length > 0;
}
public static string Collation (MemberInfo p)
{
var attrs = p.GetCustomAttributes (typeof(CollationAttribute), true);
if (attrs.Length > 0) {
return ((CollationAttribute)attrs [0]).Value;
} else {
return string.Empty;
}
}
public static bool IsAutoInc (MemberInfo p)
{
var attrs = p.GetCustomAttributes (typeof(AutoIncrementAttribute), true);
return attrs.Length > 0;
}
public static bool IsIndexed (MemberInfo p)
{
var attrs = p.GetCustomAttributes (typeof(IndexedAttribute), true);
return attrs.Length > 0;
}
public static int MaxStringLength (PropertyInfo p)
{
var attrs = p.GetCustomAttributes (typeof(MaxLengthAttribute), true);
if (attrs.Length > 0) {
return ((MaxLengthAttribute)attrs [0]).Value;
} else {
return DefaultMaxStringLength;
}
}
}
public class SQLiteCommand
{
SQLiteConnection _conn;
private List _bindings;
public string CommandText { get; set; }
internal SQLiteCommand (SQLiteConnection conn)
{
_conn = conn;
_bindings = new List ();
CommandText = "";
}
public int ExecuteNonQuery ()
{
if (_conn.Trace) {
Console.WriteLine ("Executing: " + this);
}
var r = SQLite3.Result.OK;
var stmt = Prepare ();
r = SQLite3.Step (stmt);
Finalize (stmt);
if (r == SQLite3.Result.Done) {
int rowsAffected = SQLite3.Changes (_conn.Handle);
return rowsAffected;
} else if (r == SQLite3.Result.Error) {
string msg = SQLite3.GetErrmsg (_conn.Handle);
throw SQLiteException.New (r, msg);
} else {
throw SQLiteException.New (r, r.ToString ());
}
}
public IEnumerable ExecuteDeferredQuery () where T : new()
{
return ExecuteDeferredQuery(_conn.GetMapping(typeof(T)));
}
public List ExecuteQuery () where T : new()
{
return ExecuteDeferredQuery(_conn.GetMapping(typeof(T))).ToList();
}
public List ExecuteQuery (TableMapping map)
{
return ExecuteDeferredQuery(map).ToList();
}
public IEnumerable ExecuteDeferredQuery (TableMapping map)
{
if (_conn.Trace) {
Console.WriteLine ("Executing Query: " + this);
}
var stmt = Prepare ();
try
{
var cols = new TableMapping.Column[SQLite3.ColumnCount (stmt)];
for (int i = 0; i < cols.Length; i++) {
var name = SQLite3.ColumnName16 (stmt, i);
cols [i] = map.FindColumn (name);
}
while (SQLite3.Step (stmt) == SQLite3.Result.Row) {
var obj = Activator.CreateInstance(map.MappedType);
for (int i = 0; i < cols.Length; i++) {
if (cols [i] == null)
continue;
var colType = SQLite3.ColumnType (stmt, i);
var val = ReadCol (stmt, i, colType, cols [i].ColumnType);
cols [i].SetValue (obj, val);
}
yield return (T)obj;
}
}
finally
{
SQLite3.Finalize(stmt);
}
}
public T ExecuteScalar ()
{
if (_conn.Trace) {
Console.WriteLine ("Executing Query: " + this);
}
T val = default(T);
var stmt = Prepare ();
if (SQLite3.Step (stmt) == SQLite3.Result.Row) {
var colType = SQLite3.ColumnType (stmt, 0);
val = (T)ReadCol (stmt, 0, colType, typeof(T));
}
Finalize (stmt);
return val;
}
public void Bind (string name, object val)
{
_bindings.Add (new Binding {
Name = name,
Value = val
});
}
public void Bind (object val)
{
Bind (null, val);
}
public override string ToString ()
{
var parts = new string[1 + _bindings.Count];
parts [0] = CommandText;
var i = 1;
foreach (var b in _bindings) {
parts [i] = string.Format (" {0}: {1}", i - 1, b.Value);
i++;
}
return string.Join (Environment.NewLine, parts);
}
Sqlite3Statement Prepare()
{
var stmt = SQLite3.Prepare2 (_conn.Handle, CommandText);
BindAll (stmt);
return stmt;
}
void Finalize (Sqlite3Statement stmt)
{
SQLite3.Finalize (stmt);
}
void BindAll (Sqlite3Statement stmt)
{
int nextIdx = 1;
foreach (var b in _bindings) {
if (b.Name != null) {
b.Index = SQLite3.BindParameterIndex (stmt, b.Name);
} else {
b.Index = nextIdx++;
}
}
foreach (var b in _bindings) {
BindParameter (stmt, b.Index, b.Value);
}
}
internal static IntPtr NegativePointer = new IntPtr (-1);
internal static void BindParameter (Sqlite3Statement stmt, int index, object value)
{
if (value == null) {
SQLite3.BindNull (stmt, index);
} else {
if (value is Int32) {
SQLite3.BindInt (stmt, index, (int)value);
} else if (value is String) {
SQLite3.BindText (stmt, index, (string)value, -1, NegativePointer);
} else if (value is Byte || value is UInt16 || value is SByte || value is Int16) {
SQLite3.BindInt (stmt, index, Convert.ToInt32 (value));
} else if (value is Boolean) {
SQLite3.BindInt (stmt, index, (bool)value ? 1 : 0);
} else if (value is UInt32 || value is Int64) {
SQLite3.BindInt64 (stmt, index, Convert.ToInt64 (value));
} else if (value is Single || value is Double || value is Decimal) {
SQLite3.BindDouble (stmt, index, Convert.ToDouble (value));
} else if (value is DateTime) {
SQLite3.BindText (stmt, index, ((DateTime)value).ToString ("yyyy-MM-dd HH:mm:ss"), -1, NegativePointer);
} else if (value.GetType ().IsEnum) {
SQLite3.BindInt (stmt, index, Convert.ToInt32 (value));
} else if (value is byte[]) {
SQLite3.BindBlob (stmt, index, (byte[])value, ((byte[])value).Length, NegativePointer);
} else {
throw new NotSupportedException ("Cannot store type: " + value.GetType ());
}
}
}
class Binding
{
public string Name { get; set; }
public object Value { get; set; }
public int Index { get; set; }
}
object ReadCol (Sqlite3Statement stmt, int index, SQLite3.ColType type, Type clrType)
{
if (type == SQLite3.ColType.Null) {
return null;
} else {
if (clrType == typeof(String)) {
return SQLite3.ColumnString (stmt, index);
} else if (clrType == typeof(Int32)) {
return (int)SQLite3.ColumnInt (stmt, index);
} else if (clrType == typeof(Boolean)) {
return SQLite3.ColumnInt (stmt, index) == 1;
} else if (clrType == typeof(double)) {
return SQLite3.ColumnDouble (stmt, index);
} else if (clrType == typeof(float)) {
return (float)SQLite3.ColumnDouble (stmt, index);
} else if (clrType == typeof(DateTime)) {
var text = SQLite3.ColumnString (stmt, index);
return DateTime.Parse (text);
} else if (clrType.IsEnum) {
return SQLite3.ColumnInt (stmt, index);
} else if (clrType == typeof(Int64)) {
return SQLite3.ColumnInt64 (stmt, index);
} else if (clrType == typeof(UInt32)) {
return (uint)SQLite3.ColumnInt64 (stmt, index);
} else if (clrType == typeof(decimal)) {
return (decimal)SQLite3.ColumnDouble (stmt, index);
} else if (clrType == typeof(Byte)) {
return (byte)SQLite3.ColumnInt (stmt, index);
} else if (clrType == typeof(UInt16)) {
return (ushort)SQLite3.ColumnInt (stmt, index);
} else if (clrType == typeof(Int16)) {
return (short)SQLite3.ColumnInt (stmt, index);
} else if (clrType == typeof(sbyte)) {
return (sbyte)SQLite3.ColumnInt (stmt, index);
} else if (clrType == typeof(byte[])) {
return SQLite3.ColumnByteArray (stmt, index);
} else {
throw new NotSupportedException ("Don't know how to read " + clrType);
}
}
}
}
///
/// Since the insert never changed, we only need to prepare once.
///
public class PreparedSqlLiteInsertCommand : IDisposable
{
public bool Initialized { get; set; }
protected SQLiteConnection Connection { get; set; }
public string CommandText { get; set; }
protected Sqlite3Statement Statement { get; set; }
#if USE_CSHARP_SQLITE
internal static readonly Sqlite3Statement NullStatement = null;
#else
internal static readonly Sqlite3Statement NullStatement = IntPtr.Zero;
#endif
internal PreparedSqlLiteInsertCommand (SQLiteConnection conn)
{
Connection = conn;
}
public int ExecuteNonQuery (object[] source)
{
if (Connection.Trace) {
Console.WriteLine ("Executing: " + CommandText);
}
var r = SQLite3.Result.OK;
if (!Initialized) {
Statement = Prepare ();
Initialized = true;
}
//bind the values.
if (source != null) {
for (int i = 0; i < source.Length; i++) {
SQLiteCommand.BindParameter (Statement, i + 1, source [i]);
}
}
r = SQLite3.Step (Statement);
if (r == SQLite3.Result.Done) {
int rowsAffected = SQLite3.Changes (Connection.Handle);
SQLite3.Reset (Statement);
return rowsAffected;
} else if (r == SQLite3.Result.Error) {
string msg = SQLite3.GetErrmsg (Connection.Handle);
SQLite3.Reset (Statement);
throw SQLiteException.New (r, msg);
} else {
SQLite3.Reset (Statement);
throw SQLiteException.New (r, r.ToString ());
}
}
protected virtual Sqlite3Statement Prepare ()
{
var stmt = SQLite3.Prepare2 (Connection.Handle, CommandText);
return stmt;
}
public void Dispose ()
{
Dispose (true);
GC.SuppressFinalize (this);
}
private void Dispose (bool disposing)
{
if (Statement != NullStatement) {
try {
SQLite3.Finalize (Statement);
} finally {
Statement = NullStatement;
Connection = null;
}
}
}
~PreparedSqlLiteInsertCommand ()
{
Dispose (false);
}
}
public class TableQuery : IEnumerable where T : new()
{
public SQLiteConnection Connection { get; private set; }
public TableMapping Table { get; private set; }
Expression _where;
List _orderBys;
int? _limit;
int? _offset;
class Ordering
{
public string ColumnName { get; set; }
public bool Ascending { get; set; }
}
TableQuery (SQLiteConnection conn, TableMapping table)
{
Connection = conn;
Table = table;
}
public TableQuery (SQLiteConnection conn)
{
Connection = conn;
Table = Connection.GetMapping (typeof(T));
}
public TableQuery Clone ()
{
var q = new TableQuery (Connection, Table);
q._where = _where;
q._deferred = _deferred;
if (_orderBys != null) {
q._orderBys = new List (_orderBys);
}
q._limit = _limit;
q._offset = _offset;
return q;
}
public TableQuery Where (Expression> predExpr)
{
if (predExpr.NodeType == ExpressionType.Lambda) {
var lambda = (LambdaExpression)predExpr;
var pred = lambda.Body;
var q = Clone ();
q.AddWhere (pred);
return q;
} else {
throw new NotSupportedException ("Must be a predicate");
}
}
public TableQuery Take (int n)
{
var q = Clone ();
q._limit = n;
return q;
}
public TableQuery Skip (int n)
{
var q = Clone ();
q._offset = n;
return q;
}
bool _deferred = false;
public TableQuery Deferred ()
{
var q = Clone();
q._deferred = true;
return q;
}
public TableQuery OrderBy (Expression> orderExpr)
{
return AddOrderBy (orderExpr, true);
}
public TableQuery OrderByDescending (Expression> orderExpr)
{
return AddOrderBy (orderExpr, false);
}
private TableQuery AddOrderBy (Expression> orderExpr, bool asc)
{
if (orderExpr.NodeType == ExpressionType.Lambda) {
var lambda = (LambdaExpression)orderExpr;
var mem = lambda.Body as MemberExpression;
if (mem != null && (mem.Expression.NodeType == ExpressionType.Parameter)) {
var q = Clone ();
if (q._orderBys == null) {
q._orderBys = new List ();
}
q._orderBys.Add (new Ordering {
ColumnName = mem.Member.Name,
Ascending = asc
});
return q;
} else {
throw new NotSupportedException ("Order By does not support: " + orderExpr);
}
} else {
throw new NotSupportedException ("Must be a predicate");
}
}
private void AddWhere (Expression pred)
{
if (_where == null) {
_where = pred;
} else {
_where = Expression.AndAlso (_where, pred);
}
}
private SQLiteCommand GenerateCommand (string selectionList)
{
var cmdText = "select " + selectionList + " from \"" + Table.TableName + "\"";
var args = new List ();
if (_where != null) {
var w = CompileExpr (_where, args);
cmdText += " where " + w.CommandText;
}
if ((_orderBys != null) && (_orderBys.Count > 0)) {
var t = string.Join (", ", _orderBys.Select (o => "\"" + o.ColumnName + "\"" + (o.Ascending ? "" : " desc")).ToArray ());
cmdText += " order by " + t;
}
if (_limit.HasValue) {
cmdText += " limit " + _limit.Value;
}
if (_offset.HasValue) {
if (!_limit.HasValue) {
cmdText += " limit -1 ";
}
cmdText += " offset " + _offset.Value;
}
return Connection.CreateCommand (cmdText, args.ToArray ());
}
class CompileResult
{
public string CommandText { get; set; }
public object Value { get; set; }
}
private CompileResult CompileExpr (Expression expr, List queryArgs)
{
if (expr == null) {
throw new NotSupportedException ("Expression is NULL");
} else if (expr is BinaryExpression) {
var bin = (BinaryExpression)expr;
var leftr = CompileExpr (bin.Left, queryArgs);
var rightr = CompileExpr (bin.Right, queryArgs);
//If either side is a parameter and is null, then handle the other side specially (for "is null"/"is not null")
string text;
if (leftr.CommandText == "?" && leftr.Value == null)
text = CompileNullBinaryExpression(bin, rightr);
else if (rightr.CommandText == "?" && rightr.Value == null)
text = CompileNullBinaryExpression(bin, leftr);
else
text = "(" + leftr.CommandText + " " + GetSqlName(bin) + " " + rightr.CommandText + ")";
return new CompileResult { CommandText = text };
} else if (expr.NodeType == ExpressionType.Call) {
var call = (MethodCallExpression)expr;
var args = new CompileResult[call.Arguments.Count];
for (var i = 0; i < args.Length; i++) {
args [i] = CompileExpr (call.Arguments [i], queryArgs);
}
var sqlCall = "";
if (call.Method.Name == "Like" && args.Length == 2) {
sqlCall = "(" + args [0].CommandText + " like " + args [1].CommandText + ")";
} else if (call.Method.Name == "Contains" && args.Length == 2) {
sqlCall = "(" + args [1].CommandText + " in " + args [0].CommandText + ")";
} else {
sqlCall = call.Method.Name.ToLower () + "(" + string.Join (",", args.Select (a => a.CommandText).ToArray ()) + ")";
}
return new CompileResult { CommandText = sqlCall };
} else if (expr.NodeType == ExpressionType.Constant) {
var c = (ConstantExpression)expr;
queryArgs.Add (c.Value);
return new CompileResult {
CommandText = "?",
Value = c.Value
};
} else if (expr.NodeType == ExpressionType.Convert) {
var u = (UnaryExpression)expr;
var ty = u.Type;
var valr = CompileExpr (u.Operand, queryArgs);
return new CompileResult {
CommandText = valr.CommandText,
Value = valr.Value != null ? Convert.ChangeType (valr.Value, ty, null) : null
};
} else if (expr.NodeType == ExpressionType.MemberAccess) {
var mem = (MemberExpression)expr;
if (mem.Expression.NodeType == ExpressionType.Parameter) {
//
// This is a column of our table, output just the column name
//
return new CompileResult { CommandText = "\"" + mem.Member.Name + "\"" };
} else {
object obj = null;
if (mem.Expression != null) {
var r = CompileExpr (mem.Expression, queryArgs);
if (r.Value == null) {
throw new NotSupportedException ("Member access failed to compile expression");
}
if (r.CommandText == "?") {
queryArgs.RemoveAt (queryArgs.Count - 1);
}
obj = r.Value;
}
//
// Get the member value
//
object val = null;
if (mem.Member.MemberType == MemberTypes.Property) {
var m = (PropertyInfo)mem.Member;
val = m.GetValue (obj, null);
} else if (mem.Member.MemberType == MemberTypes.Field) {
var m = (FieldInfo)mem.Member;
val = m.GetValue (obj);
} else {
throw new NotSupportedException ("MemberExpr: " + mem.Member.MemberType.ToString ());
}
//
// Work special magic for enumerables
//
if (val != null && val is System.Collections.IEnumerable && !(val is string)) {
var sb = new System.Text.StringBuilder();
sb.Append("(");
var head = "";
foreach (var a in (System.Collections.IEnumerable)val) {
queryArgs.Add(a);
sb.Append(head);
sb.Append("?");
head = ",";
}
sb.Append(")");
return new CompileResult {
CommandText = sb.ToString(),
Value = val
};
}
else {
queryArgs.Add (val);
return new CompileResult {
CommandText = "?",
Value = val
};
}
}
}
throw new NotSupportedException ("Cannot compile: " + expr.NodeType.ToString ());
}
///
/// Compiles a BinaryExpression where one of the parameters is null.
///
/// The non-null parameter
private string CompileNullBinaryExpression(BinaryExpression expression, CompileResult parameter)
{
if (expression.NodeType == ExpressionType.Equal)
return "(" + parameter.CommandText + " is ?)";
else if (expression.NodeType == ExpressionType.NotEqual)
return "(" + parameter.CommandText + " is not ?)";
else
throw new NotSupportedException("Cannot compile Null-BinaryExpression with type " + expression.NodeType.ToString());
}
string GetSqlName (Expression expr)
{
var n = expr.NodeType;
if (n == ExpressionType.GreaterThan)
return ">"; else if (n == ExpressionType.GreaterThanOrEqual) {
return ">=";
} else if (n == ExpressionType.LessThan) {
return "<";
} else if (n == ExpressionType.LessThanOrEqual) {
return "<=";
} else if (n == ExpressionType.And) {
return "and";
} else if (n == ExpressionType.AndAlso) {
return "and";
} else if (n == ExpressionType.Or) {
return "or";
} else if (n == ExpressionType.OrElse) {
return "or";
} else if (n == ExpressionType.Equal) {
return "=";
} else if (n == ExpressionType.NotEqual) {
return "!=";
} else {
throw new System.NotSupportedException ("Cannot get SQL for: " + n.ToString ());
}
}
public int Count ()
{
return GenerateCommand("count(*)").ExecuteScalar ();
}
public IEnumerator GetEnumerator ()
{
if (!_deferred)
return GenerateCommand("*").ExecuteQuery().GetEnumerator();
return GenerateCommand("*").ExecuteDeferredQuery().GetEnumerator();
}
System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator ()
{
return GetEnumerator ();
}
}
public static class SQLite3
{
public enum Result : int
{
OK = 0,
Error = 1,
Internal = 2,
Perm = 3,
Abort = 4,
Busy = 5,
Locked = 6,
NoMem = 7,
ReadOnly = 8,
Interrupt = 9,
IOError = 10,
Corrupt = 11,
NotFound = 12,
TooBig = 18,
Constraint = 19,
Row = 100,
Done = 101
}
public enum ConfigOption : int
{
SingleThread = 1,
MultiThread = 2,
Serialized = 3
}
#if !USE_CSHARP_SQLITE
[DllImport("sqlite3", EntryPoint = "sqlite3_open")]
public static extern Result Open (string filename, out IntPtr db);
[DllImport("sqlite3", EntryPoint = "sqlite3_open_v2")]
public static extern Result Open (string filename, out IntPtr db, int flags, IntPtr zvfs);
[DllImport("sqlite3", EntryPoint = "sqlite3_close")]
public static extern Result Close (IntPtr db);
[DllImport("sqlite3", EntryPoint = "sqlite3_config")]
public static extern Result Config (ConfigOption option);
[DllImport("sqlite3", EntryPoint = "sqlite3_busy_timeout")]
public static extern Result BusyTimeout (IntPtr db, int milliseconds);
[DllImport("sqlite3", EntryPoint = "sqlite3_changes")]
public static extern int Changes (IntPtr db);
[DllImport("sqlite3", EntryPoint = "sqlite3_prepare_v2")]
public static extern Result Prepare2 (IntPtr db, string sql, int numBytes, out IntPtr stmt, IntPtr pzTail);
public static IntPtr Prepare2 (IntPtr db, string query)
{
IntPtr stmt;
var r = Prepare2 (db, query, query.Length, out stmt, IntPtr.Zero);
if (r != Result.OK) {
throw SQLiteException.New (r, GetErrmsg (db));
}
return stmt;
}
[DllImport("sqlite3", EntryPoint = "sqlite3_step")]
public static extern Result Step (IntPtr stmt);
[DllImport("sqlite3", EntryPoint = "sqlite3_reset")]
public static extern Result Reset (IntPtr stmt);
[DllImport("sqlite3", EntryPoint = "sqlite3_finalize")]
public static extern Result Finalize (IntPtr stmt);
[DllImport("sqlite3", EntryPoint = "sqlite3_last_insert_rowid")]
public static extern long LastInsertRowid (IntPtr db);
[DllImport("sqlite3", EntryPoint = "sqlite3_errmsg16")]
public static extern IntPtr Errmsg (IntPtr db);
public static string GetErrmsg (IntPtr db)
{
return Marshal.PtrToStringUni (Errmsg (db));
}
[DllImport("sqlite3", EntryPoint = "sqlite3_bind_parameter_index")]
public static extern int BindParameterIndex (IntPtr stmt, string name);
[DllImport("sqlite3", EntryPoint = "sqlite3_bind_null")]
public static extern int BindNull (IntPtr stmt, int index);
[DllImport("sqlite3", EntryPoint = "sqlite3_bind_int")]
public static extern int BindInt (IntPtr stmt, int index, int val);
[DllImport("sqlite3", EntryPoint = "sqlite3_bind_int64")]
public static extern int BindInt64 (IntPtr stmt, int index, long val);
[DllImport("sqlite3", EntryPoint = "sqlite3_bind_double")]
public static extern int BindDouble (IntPtr stmt, int index, double val);
[DllImport("sqlite3", EntryPoint = "sqlite3_bind_text")]
public static extern int BindText (IntPtr stmt, int index, string val, int n, IntPtr free);
[DllImport("sqlite3", EntryPoint = "sqlite3_bind_blob")]
public static extern int BindBlob (IntPtr stmt, int index, byte[] val, int n, IntPtr free);
[DllImport("sqlite3", EntryPoint = "sqlite3_column_count")]
public static extern int ColumnCount (IntPtr stmt);
[DllImport("sqlite3", EntryPoint = "sqlite3_column_name")]
public static extern IntPtr ColumnName (IntPtr stmt, int index);
[DllImport("sqlite3", EntryPoint = "sqlite3_column_name16")]
private static extern IntPtr ColumnName16Internal (IntPtr stmt, int index);
public static string ColumnName16(IntPtr stmt, int index)
{
return Marshal.PtrToStringUni(ColumnName16Internal(stmt, index));
}
[DllImport("sqlite3", EntryPoint = "sqlite3_column_type")]
public static extern ColType ColumnType (IntPtr stmt, int index);
[DllImport("sqlite3", EntryPoint = "sqlite3_column_int")]
public static extern int ColumnInt (IntPtr stmt, int index);
[DllImport("sqlite3", EntryPoint = "sqlite3_column_int64")]
public static extern long ColumnInt64 (IntPtr stmt, int index);
[DllImport("sqlite3", EntryPoint = "sqlite3_column_double")]
public static extern double ColumnDouble (IntPtr stmt, int index);
[DllImport("sqlite3", EntryPoint = "sqlite3_column_text")]
public static extern IntPtr ColumnText (IntPtr stmt, int index);
[DllImport("sqlite3", EntryPoint = "sqlite3_column_text16")]
public static extern IntPtr ColumnText16 (IntPtr stmt, int index);
[DllImport("sqlite3", EntryPoint = "sqlite3_column_blob")]
public static extern IntPtr ColumnBlob (IntPtr stmt, int index);
[DllImport("sqlite3", EntryPoint = "sqlite3_column_bytes")]
public static extern int ColumnBytes (IntPtr stmt, int index);
public static string ColumnString (IntPtr stmt, int index)
{
return Marshal.PtrToStringUni (SQLite3.ColumnText16 (stmt, index));
}
public static byte[] ColumnByteArray (IntPtr stmt, int index)
{
int length = ColumnBytes (stmt, index);
byte[] result = new byte[length];
if (length > 0)
Marshal.Copy (ColumnBlob (stmt, index), result, 0, length);
return result;
}
#else
public static Result Open(string filename, out Sqlite3.sqlite3 db)
{
db = new Sqlite3.sqlite3();
return (Result)Sqlite3.sqlite3_open(filename, ref db);
}
public static Result Close(Sqlite3.sqlite3 db)
{
return (Result)Sqlite3.sqlite3_close(db);
}
public static Result BusyTimeout(Sqlite3.sqlite3 db, int milliseconds)
{
return (Result)Sqlite3.sqlite3_busy_timeout(db, milliseconds);
}
public static int Changes(Sqlite3.sqlite3 db)
{
return Sqlite3.sqlite3_changes(db);
}
public static Sqlite3.Vdbe Prepare2(Sqlite3.sqlite3 db, string query)
{
Sqlite3.Vdbe stmt = new Sqlite3.Vdbe();
var r = Sqlite3.sqlite3_prepare_v2(db, query, query.Length, ref stmt, 0);
if (r != 0)
{
throw SQLiteException.New((Result)r, GetErrmsg(db));
}
return stmt;
}
public static Result Step(Sqlite3.Vdbe stmt)
{
return (Result)Sqlite3.sqlite3_step(stmt);
}
public static Result Reset(Sqlite3.Vdbe stmt)
{
return (Result)Sqlite3.sqlite3_reset(stmt);
}
public static Result Finalize(Sqlite3.Vdbe stmt)
{
return (Result)Sqlite3.sqlite3_finalize(ref stmt);
}
public static long LastInsertRowid(Sqlite3.sqlite3 db)
{
return Sqlite3.sqlite3_last_insert_rowid(db);
}
public static string GetErrmsg(Sqlite3.sqlite3 db)
{
return Sqlite3.sqlite3_errmsg(db);
}
public static int BindParameterIndex(Sqlite3.Vdbe stmt, string name)
{
return Sqlite3.sqlite3_bind_parameter_index(stmt, name);
}
public static int BindNull(Sqlite3.Vdbe stmt, int index)
{
return Sqlite3.sqlite3_bind_null(stmt, index);
}
public static int BindInt(Sqlite3.Vdbe stmt, int index, int val)
{
return Sqlite3.sqlite3_bind_int(stmt, index, val);
}
public static int BindInt64(Sqlite3.Vdbe stmt, int index, long val)
{
return Sqlite3.sqlite3_bind_int64(stmt, index, val);
}
public static int BindDouble(Sqlite3.Vdbe stmt, int index, double val)
{
return Sqlite3.sqlite3_bind_double(stmt, index, val);
}
public static int BindText(Sqlite3.Vdbe stmt, int index, string val, int n, IntPtr free)
{
return Sqlite3.sqlite3_bind_text(stmt, index, val, n, null);
}
public static int BindBlob(Sqlite3.Vdbe stmt, int index, byte[] val, int n, IntPtr free)
{
return Sqlite3.sqlite3_bind_blob(stmt, index, val, n, null);
}
public static int ColumnCount(Sqlite3.Vdbe stmt)
{
return Sqlite3.sqlite3_column_count(stmt);
}
public static string ColumnName(Sqlite3.Vdbe stmt, int index)
{
return Sqlite3.sqlite3_column_name(stmt, index);
}
public static string ColumnName16(Sqlite3.Vdbe stmt, int index)
{
return Sqlite3.sqlite3_column_name(stmt, index);
}
public static ColType ColumnType(Sqlite3.Vdbe stmt, int index)
{
return (ColType)Sqlite3.sqlite3_column_type(stmt, index);
}
public static int ColumnInt(Sqlite3.Vdbe stmt, int index)
{
return Sqlite3.sqlite3_column_int(stmt, index);
}
public static long ColumnInt64(Sqlite3.Vdbe stmt, int index)
{
return Sqlite3.sqlite3_column_int64(stmt, index);
}
public static double ColumnDouble(Sqlite3.Vdbe stmt, int index)
{
return Sqlite3.sqlite3_column_double(stmt, index);
}
public static string ColumnText(Sqlite3.Vdbe stmt, int index)
{
return Sqlite3.sqlite3_column_text(stmt, index);
}
public static string ColumnText16(Sqlite3.Vdbe stmt, int index)
{
return Sqlite3.sqlite3_column_text(stmt, index);
}
public static byte[] ColumnBlob(Sqlite3.Vdbe stmt, int index)
{
return Sqlite3.sqlite3_column_blob(stmt, index);
}
public static int ColumnBytes(Sqlite3.Vdbe stmt, int index)
{
return Sqlite3.sqlite3_column_bytes(stmt, index);
}
public static string ColumnString(Sqlite3.Vdbe stmt, int index)
{
return Sqlite3.sqlite3_column_text(stmt, index);
}
public static byte[] ColumnByteArray(Sqlite3.Vdbe stmt, int index)
{
return ColumnBlob(stmt, index);
}
#endif
public enum ColType : int
{
Integer = 1,
Float = 2,
Text = 3,
Blob = 4,
Null = 5
}
}
}