82 lines
2.6 KiB
C#
82 lines
2.6 KiB
C#
using SharpChat.Configuration;
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using System;
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using System.Data.SQLite;
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namespace SharpChat.Database.SQLite {
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[DatabaseBackend(@"sqlite")]
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public class SQLiteDatabaseBackend : IDatabaseBackend {
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private string DSN { get; }
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private const string DEFAULT_PATH = @"sharpchat.db";
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public SQLiteDatabaseBackend(IConfig config) : this(
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config.ReadValue(@"path", DEFAULT_PATH)
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) { }
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public SQLiteDatabaseBackend(string path = DEFAULT_PATH) {
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DSN = new SQLiteConnectionStringBuilder {
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DataSource = path,
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DateTimeFormat = SQLiteDateFormats.UnixEpoch,
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DateTimeKind = DateTimeKind.Utc,
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ForeignKeys = true,
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LegacyFormat = false,
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Pooling = true,
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Version = 3,
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}.ToString();
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}
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public IDatabaseConnection CreateConnection()
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=> new SQLiteDatabaseConnection(DSN);
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public IDatabaseParameter CreateParameter(string name, object value)
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=> new SQLiteDatabaseParameter(name, value);
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public IDatabaseParameter CreateParameter(string name, DatabaseType type)
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=> new SQLiteDatabaseParameter(name, type);
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public string TimestampType
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=> @"INTEGER";
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public string TextType
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=> @"TEXT";
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public string BlobType
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=> @"BLOB";
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public string VarCharType(int size)
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=> @"TEXT";
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public string VarBinaryType(int size)
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=> @"BLOB";
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public string BigIntType(int length)
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=> @"INTEGER";
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public string BigUIntType(int length)
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=> @"INTEGER";
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public string IntType(int length)
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=> @"INTEGER";
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public string UIntType(int length)
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=> @"INTEGER";
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public string TinyIntType(int length)
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=> @"INTEGER";
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public string TinyUIntType(int length)
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=> @"INTEGER";
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public string FromUnixTime(string param)
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=> param;
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public string ToUnixTime(string param)
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=> param;
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public string DateTimeNow()
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=> @"strftime('%s', 'now')";
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public bool SupportsJson => false;
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public string JsonValue(string field, string path)
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=> string.Empty;
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public string Concat(params string[] args)
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=> string.Join(@" || ", args);
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public string ToLower(string param)
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=> string.Format(@"LOWER({0})", param);
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public bool SupportsAlterTableCollate => false;
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public string AsciiCollation => @"NOCASE";
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public string UnicodeCollation => @"NOCASE";
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}
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}
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