#if MYSQL_6_10 // Copyright (c) 2004, 2019, Oracle and/or its affiliates. All rights reserved. // // MySQL Connector/NET is licensed under the terms of the GPLv2 // , like most // MySQL Connectors. There are special exceptions to the terms and // conditions of the GPLv2 as it is applied to this software, see the // FLOSS License Exception // . // // This program is free software; you can redistribute it and/or modify // it under the terms of the GNU General Public License as published // by the Free Software Foundation; version 2 of the License. // // This program is distributed in the hope that it will be useful, but // WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY // or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License // for more details. // // You should have received a copy of the GNU General Public License along // with this program; if not, write to the Free Software Foundation, Inc., // 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA using System; using System.Globalization; using System.IO; using System.Reflection; using System.Text; using System.Text.RegularExpressions; using System.Collections.Generic; using System.Data; using System.Data.Common; using Externals.MySql.Data.Common; using Externals.MySql.Data.Types; namespace Externals.MySql.Data.MySqlClient { internal class SchemaProvider { protected MySqlConnection connection; public static string MetaCollection = "MetaDataCollections"; public SchemaProvider(MySqlConnection connectionToUse) { connection = connectionToUse; } public virtual MySqlSchemaCollection GetSchema(string collection, String[] restrictions) { if (connection.State != ConnectionState.Open) throw new MySqlException("GetSchema can only be called on an open connection."); collection = StringUtility.ToUpperInvariant(collection); MySqlSchemaCollection c = GetSchemaInternal(collection, restrictions); if (c == null) throw new ArgumentException("Invalid collection name"); return c; } public virtual MySqlSchemaCollection GetDatabases(string[] restrictions) { Regex regex = null; int caseSetting = Int32.Parse(connection.driver.Property("lower_case_table_names"), CultureInfo.InvariantCulture); string sql = "SHOW DATABASES"; // if lower_case_table_names is zero, then case lookup should be sensitive // so we can use LIKE to do the matching. if (caseSetting == 0) { if (restrictions != null && restrictions.Length >= 1) sql = sql + " LIKE '" + restrictions[0] + "'"; } MySqlSchemaCollection c = QueryCollection("Databases", sql); if (caseSetting != 0 && restrictions != null && restrictions.Length >= 1 && restrictions[0] != null) regex = new Regex(restrictions[0], RegexOptions.IgnoreCase); MySqlSchemaCollection c2 = new MySqlSchemaCollection("Databases"); c2.AddColumn("CATALOG_NAME", typeof(string)); c2.AddColumn("SCHEMA_NAME", typeof(string)); foreach (MySqlSchemaRow row in c.Rows) { if (regex != null && !regex.Match(row[0].ToString()).Success) continue; MySqlSchemaRow newRow = c2.AddRow(); newRow[1] = row[0]; } return c2; } public virtual MySqlSchemaCollection GetTables(string[] restrictions) { MySqlSchemaCollection c = new MySqlSchemaCollection("Tables"); c.AddColumn("TABLE_CATALOG", typeof(string)); c.AddColumn("TABLE_SCHEMA", typeof(string)); c.AddColumn("TABLE_NAME", typeof(string)); c.AddColumn("TABLE_TYPE", typeof(string)); c.AddColumn("ENGINE", typeof(string)); c.AddColumn("VERSION", typeof(ulong)); c.AddColumn("ROW_FORMAT", typeof(string)); c.AddColumn("TABLE_ROWS", typeof(ulong)); c.AddColumn("AVG_ROW_LENGTH", typeof(ulong)); c.AddColumn("DATA_LENGTH", typeof(ulong)); c.AddColumn("MAX_DATA_LENGTH", typeof(ulong)); c.AddColumn("INDEX_LENGTH", typeof(ulong)); c.AddColumn("DATA_FREE", typeof(ulong)); c.AddColumn("AUTO_INCREMENT", typeof(ulong)); c.AddColumn("CREATE_TIME", typeof(DateTime)); c.AddColumn("UPDATE_TIME", typeof(DateTime)); c.AddColumn("CHECK_TIME", typeof(DateTime)); c.AddColumn("TABLE_COLLATION", typeof(string)); c.AddColumn("CHECKSUM", typeof(ulong)); c.AddColumn("CREATE_OPTIONS", typeof(string)); c.AddColumn("TABLE_COMMENT", typeof(string)); // we have to new up a new restriction array here since // GetDatabases takes the database in the first slot string[] dbRestriction = new string[4]; if (restrictions != null && restrictions.Length >= 2) dbRestriction[0] = restrictions[1]; MySqlSchemaCollection databases = GetDatabases(dbRestriction); if (restrictions != null) Array.Copy(restrictions, dbRestriction, Math.Min(dbRestriction.Length, restrictions.Length)); foreach (MySqlSchemaRow row in databases.Rows) { dbRestriction[1] = row["SCHEMA_NAME"].ToString(); FindTables(c, dbRestriction); } return c; } protected void QuoteDefaultValues(MySqlSchemaCollection schemaCollection) { if (schemaCollection == null) return; if (!schemaCollection.ContainsColumn("COLUMN_DEFAULT")) return; foreach (MySqlSchemaRow row in schemaCollection.Rows) { object defaultValue = row["COLUMN_DEFAULT"]; if (MetaData.IsTextType(row["DATA_TYPE"].ToString())) row["COLUMN_DEFAULT"] = String.Format("{0}", defaultValue); } } public virtual MySqlSchemaCollection GetColumns(string[] restrictions) { MySqlSchemaCollection c = new MySqlSchemaCollection("Columns"); c.AddColumn("TABLE_CATALOG", typeof(string)); c.AddColumn("TABLE_SCHEMA", typeof(string)); c.AddColumn("TABLE_NAME", typeof(string)); c.AddColumn("COLUMN_NAME", typeof(string)); c.AddColumn("ORDINAL_POSITION", typeof(ulong)); c.AddColumn("COLUMN_DEFAULT", typeof(string)); c.AddColumn("IS_NULLABLE", typeof(string)); c.AddColumn("DATA_TYPE", typeof(string)); c.AddColumn("CHARACTER_MAXIMUM_LENGTH", typeof(ulong)); c.AddColumn("CHARACTER_OCTET_LENGTH", typeof(ulong)); c.AddColumn("NUMERIC_PRECISION", typeof(ulong)); c.AddColumn("NUMERIC_SCALE", typeof(ulong)); c.AddColumn("CHARACTER_SET_NAME", typeof(string)); c.AddColumn("COLLATION_NAME", typeof(string)); c.AddColumn("COLUMN_TYPE", typeof(string)); c.AddColumn("COLUMN_KEY", typeof(string)); c.AddColumn("EXTRA", typeof(string)); c.AddColumn("PRIVILEGES", typeof(string)); c.AddColumn("COLUMN_COMMENT", typeof(string)); c.AddColumn("GENERATION_EXPRESSION", typeof(string)); // we don't allow restricting on table type here string columnName = null; if (restrictions != null && restrictions.Length == 4) { columnName = restrictions[3]; restrictions[3] = null; } MySqlSchemaCollection tables = GetTables(restrictions); foreach (MySqlSchemaRow row in tables.Rows) LoadTableColumns(c, row["TABLE_SCHEMA"].ToString(), row["TABLE_NAME"].ToString(), columnName); QuoteDefaultValues(c); return c; } private void LoadTableColumns(MySqlSchemaCollection schemaCollection, string schema, string tableName, string columnRestriction) { string sql = String.Format("SHOW FULL COLUMNS FROM `{0}`.`{1}`", schema, tableName); MySqlCommand cmd = new MySqlCommand(sql, connection); int pos = 1; using (MySqlDataReader reader = cmd.ExecuteReader()) { while (reader.Read()) { string colName = reader.GetString(0); if (columnRestriction != null && colName != columnRestriction) continue; MySqlSchemaRow row = schemaCollection.AddRow(); row["TABLE_CATALOG"] = DBNull.Value; row["TABLE_SCHEMA"] = schema; row["TABLE_NAME"] = tableName; row["COLUMN_NAME"] = colName; row["ORDINAL_POSITION"] = pos++; row["COLUMN_DEFAULT"] = reader.GetValue(5); row["IS_NULLABLE"] = reader.GetString(3); row["DATA_TYPE"] = reader.GetString(1); row["CHARACTER_MAXIMUM_LENGTH"] = DBNull.Value; row["CHARACTER_OCTET_LENGTH"] = DBNull.Value; row["NUMERIC_PRECISION"] = DBNull.Value; row["NUMERIC_SCALE"] = DBNull.Value; row["CHARACTER_SET_NAME"] = reader.GetValue(2); row["COLLATION_NAME"] = row["CHARACTER_SET_NAME"]; row["COLUMN_TYPE"] = reader.GetString(1); row["COLUMN_KEY"] = reader.GetString(4); row["EXTRA"] = reader.GetString(6); row["PRIVILEGES"] = reader.GetString(7); row["COLUMN_COMMENT"] = reader.GetString(8); row["GENERATION_EXPRESION"] = reader.GetString(6).Contains("VIRTUAL") ? reader.GetString(9) : string.Empty; ParseColumnRow(row); } } } private static void ParseColumnRow(MySqlSchemaRow row) { // first parse the character set name string charset = row["CHARACTER_SET_NAME"].ToString(); int index = charset.IndexOf('_'); if (index != -1) row["CHARACTER_SET_NAME"] = charset.Substring(0, index); // now parse the data type string dataType = row["DATA_TYPE"].ToString(); index = dataType.IndexOf('('); if (index == -1) return; row["DATA_TYPE"] = dataType.Substring(0, index); int stop = dataType.IndexOf(')', index); string dataLen = dataType.Substring(index + 1, stop - (index + 1)); string lowerType = row["DATA_TYPE"].ToString().ToLower(); if (lowerType == "char" || lowerType == "varchar") row["CHARACTER_MAXIMUM_LENGTH"] = dataLen; else if (lowerType == "real" || lowerType == "decimal") { string[] lenparts = dataLen.Split(new char[] { ',' }); row["NUMERIC_PRECISION"] = lenparts[0]; if (lenparts.Length == 2) row["NUMERIC_SCALE"] = lenparts[1]; } } public virtual MySqlSchemaCollection GetIndexes(string[] restrictions) { MySqlSchemaCollection dt = new MySqlSchemaCollection("Indexes"); dt.AddColumn("INDEX_CATALOG", typeof(string)); dt.AddColumn("INDEX_SCHEMA", typeof(string)); dt.AddColumn("INDEX_NAME", typeof(string)); dt.AddColumn("TABLE_NAME", typeof(string)); dt.AddColumn("UNIQUE", typeof(bool)); dt.AddColumn("PRIMARY", typeof(bool)); dt.AddColumn("TYPE", typeof(string)); dt.AddColumn("COMMENT", typeof(string)); // Get the list of tables first int max = restrictions?.Length ?? 4; string[] tableRestrictions = new string[Math.Max(max, 4)]; restrictions?.CopyTo(tableRestrictions, 0); tableRestrictions[3] = "BASE TABLE"; MySqlSchemaCollection tables = GetTables(tableRestrictions); foreach (MySqlSchemaRow table in tables.Rows) { string sql = String.Format("SHOW INDEX FROM `{0}`.`{1}`", MySqlHelper.DoubleQuoteString((string)table["TABLE_SCHEMA"]), MySqlHelper.DoubleQuoteString((string)table["TABLE_NAME"])); MySqlSchemaCollection indexes = QueryCollection("indexes", sql); foreach (MySqlSchemaRow index in indexes.Rows) { if (1 != (connection.driver.Version.isAtLeast(8, 0, 1) ? (uint)index["SEQ_IN_INDEX"] : (long)index["SEQ_IN_INDEX"])) continue; if (restrictions != null && restrictions.Length == 4 && restrictions[3] != null && !index["KEY_NAME"].Equals(restrictions[3])) continue; MySqlSchemaRow row = dt.AddRow(); row["INDEX_CATALOG"] = null; row["INDEX_SCHEMA"] = table["TABLE_SCHEMA"]; row["INDEX_NAME"] = index["KEY_NAME"]; row["TABLE_NAME"] = index["TABLE"]; row["UNIQUE"] = connection.driver.Version.isAtLeast(8, 0, 1) ? Convert.ToInt64(index["NON_UNIQUE"]) == 0 : (long)index["NON_UNIQUE"] == 0; row["PRIMARY"] = index["KEY_NAME"].Equals("PRIMARY"); row["TYPE"] = index["INDEX_TYPE"]; row["COMMENT"] = index["COMMENT"]; } } return dt; } public virtual MySqlSchemaCollection GetIndexColumns(string[] restrictions) { MySqlSchemaCollection dt = new MySqlSchemaCollection("IndexColumns"); dt.AddColumn("INDEX_CATALOG", typeof(string)); dt.AddColumn("INDEX_SCHEMA", typeof(string)); dt.AddColumn("INDEX_NAME", typeof(string)); dt.AddColumn("TABLE_NAME", typeof(string)); dt.AddColumn("COLUMN_NAME", typeof(string)); dt.AddColumn("ORDINAL_POSITION", typeof(int)); dt.AddColumn("SORT_ORDER", typeof(string)); int max = restrictions == null ? 4 : restrictions.Length; string[] tableRestrictions = new string[Math.Max(max, 4)]; if (restrictions != null) restrictions.CopyTo(tableRestrictions, 0); tableRestrictions[3] = "BASE TABLE"; MySqlSchemaCollection tables = GetTables(tableRestrictions); foreach (MySqlSchemaRow table in tables.Rows) { string sql = String.Format("SHOW INDEX FROM `{0}`.`{1}`", table["TABLE_SCHEMA"], table["TABLE_NAME"]); MySqlCommand cmd = new MySqlCommand(sql, connection); using (MySqlDataReader reader = cmd.ExecuteReader()) { while (reader.Read()) { string key_name = GetString(reader, reader.GetOrdinal("KEY_NAME")); string col_name = GetString(reader, reader.GetOrdinal("COLUMN_NAME")); if (restrictions != null) { if (restrictions.Length >= 4 && restrictions[3] != null && key_name != restrictions[3]) continue; if (restrictions.Length >= 5 && restrictions[4] != null && col_name != restrictions[4]) continue; } MySqlSchemaRow row = dt.AddRow(); row["INDEX_CATALOG"] = null; row["INDEX_SCHEMA"] = table["TABLE_SCHEMA"]; row["INDEX_NAME"] = key_name; row["TABLE_NAME"] = GetString(reader, reader.GetOrdinal("TABLE")); row["COLUMN_NAME"] = col_name; row["ORDINAL_POSITION"] = reader.GetValue(reader.GetOrdinal("SEQ_IN_INDEX")); row["SORT_ORDER"] = reader.GetString("COLLATION"); } } } return dt; } public virtual MySqlSchemaCollection GetForeignKeys(string[] restrictions) { MySqlSchemaCollection dt = new MySqlSchemaCollection("Foreign Keys"); dt.AddColumn("CONSTRAINT_CATALOG", typeof(string)); dt.AddColumn("CONSTRAINT_SCHEMA", typeof(string)); dt.AddColumn("CONSTRAINT_NAME", typeof(string)); dt.AddColumn("TABLE_CATALOG", typeof(string)); dt.AddColumn("TABLE_SCHEMA", typeof(string)); dt.AddColumn("TABLE_NAME", typeof(string)); dt.AddColumn("MATCH_OPTION", typeof(string)); dt.AddColumn("UPDATE_RULE", typeof(string)); dt.AddColumn("DELETE_RULE", typeof(string)); dt.AddColumn("REFERENCED_TABLE_CATALOG", typeof(string)); dt.AddColumn("REFERENCED_TABLE_SCHEMA", typeof(string)); dt.AddColumn("REFERENCED_TABLE_NAME", typeof(string)); // first we use our restrictions to get a list of tables that should be // consulted. We save the keyname restriction since GetTables doesn't // understand that. string keyName = null; if (restrictions != null && restrictions.Length >= 4) { keyName = restrictions[3]; restrictions[3] = null; } MySqlSchemaCollection tables = GetTables(restrictions); // now for each table retrieved, we call our helper function to // parse it's foreign keys foreach (MySqlSchemaRow table in tables.Rows) GetForeignKeysOnTable(dt, table, keyName, false); return dt; } public virtual MySqlSchemaCollection GetForeignKeyColumns(string[] restrictions) { MySqlSchemaCollection dt = new MySqlSchemaCollection("Foreign Keys"); dt.AddColumn("CONSTRAINT_CATALOG", typeof(string)); dt.AddColumn("CONSTRAINT_SCHEMA", typeof(string)); dt.AddColumn("CONSTRAINT_NAME", typeof(string)); dt.AddColumn("TABLE_CATALOG", typeof(string)); dt.AddColumn("TABLE_SCHEMA", typeof(string)); dt.AddColumn("TABLE_NAME", typeof(string)); dt.AddColumn("COLUMN_NAME", typeof(string)); dt.AddColumn("ORDINAL_POSITION", typeof(int)); dt.AddColumn("REFERENCED_TABLE_CATALOG", typeof(string)); dt.AddColumn("REFERENCED_TABLE_SCHEMA", typeof(string)); dt.AddColumn("REFERENCED_TABLE_NAME", typeof(string)); dt.AddColumn("REFERENCED_COLUMN_NAME", typeof(string)); // first we use our restrictions to get a list of tables that should be // consulted. We save the keyname restriction since GetTables doesn't // understand that. string keyName = null; if (restrictions != null && restrictions.Length >= 4) { keyName = restrictions[3]; restrictions[3] = null; } MySqlSchemaCollection tables = GetTables(restrictions); // now for each table retrieved, we call our helper function to // parse it's foreign keys foreach (MySqlSchemaRow table in tables.Rows) GetForeignKeysOnTable(dt, table, keyName, true); return dt; } private string GetSqlMode() { MySqlCommand cmd = new MySqlCommand("SELECT @@SQL_MODE", connection); return cmd.ExecuteScalar().ToString(); } #region Foreign Key routines /// /// GetForeignKeysOnTable retrieves the foreign keys on the given table. /// Since MySQL supports foreign keys on versions prior to 5.0, we can't use /// information schema. MySQL also does not include any type of SHOW command /// for foreign keys so we have to resort to use SHOW CREATE TABLE and parsing /// the output. /// /// The table to store the key info in. /// The table to get the foeign key info for. /// Only get foreign keys that match this name. /// Should column information be included in the table. private void GetForeignKeysOnTable(MySqlSchemaCollection fkTable, MySqlSchemaRow tableToParse, string filterName, bool includeColumns) { string sqlMode = GetSqlMode(); if (filterName != null) filterName = StringUtility.ToLowerInvariant(filterName); string sql = string.Format("SHOW CREATE TABLE `{0}`.`{1}`", tableToParse["TABLE_SCHEMA"], tableToParse["TABLE_NAME"]); string lowerBody = null, body = null; MySqlCommand cmd = new MySqlCommand(sql, connection); using (MySqlDataReader reader = cmd.ExecuteReader()) { reader.Read(); body = reader.GetString(1); lowerBody = StringUtility.ToLowerInvariant(body); } MySqlTokenizer tokenizer = new MySqlTokenizer(lowerBody); tokenizer.AnsiQuotes = sqlMode.IndexOf("ANSI_QUOTES") != -1; tokenizer.BackslashEscapes = sqlMode.IndexOf("NO_BACKSLASH_ESCAPES") != -1; while (true) { string token = tokenizer.NextToken(); // look for a starting contraint while (token != null && (token != "constraint" || tokenizer.Quoted)) token = tokenizer.NextToken(); if (token == null) break; ParseConstraint(fkTable, tableToParse, tokenizer, includeColumns); } } private static void ParseConstraint(MySqlSchemaCollection fkTable, MySqlSchemaRow table, MySqlTokenizer tokenizer, bool includeColumns) { string name = tokenizer.NextToken(); MySqlSchemaRow row = fkTable.AddRow(); // make sure this constraint is a FK string token = tokenizer.NextToken(); if (token != "foreign" || tokenizer.Quoted) return; tokenizer.NextToken(); // read off the 'KEY' symbol tokenizer.NextToken(); // read off the '(' symbol row["CONSTRAINT_CATALOG"] = table["TABLE_CATALOG"]; row["CONSTRAINT_SCHEMA"] = table["TABLE_SCHEMA"]; row["TABLE_CATALOG"] = table["TABLE_CATALOG"]; row["TABLE_SCHEMA"] = table["TABLE_SCHEMA"]; row["TABLE_NAME"] = table["TABLE_NAME"]; row["REFERENCED_TABLE_CATALOG"] = null; row["CONSTRAINT_NAME"] = name.Trim(new char[] { '\'', '`' }); List srcColumns = includeColumns ? ParseColumns(tokenizer) : null; // now look for the references section while (token != "references" || tokenizer.Quoted) token = tokenizer.NextToken(); string target1 = tokenizer.NextToken(); string target2 = tokenizer.NextToken(); if (target2.StartsWith(".", StringComparison.Ordinal)) { row["REFERENCED_TABLE_SCHEMA"] = target1; row["REFERENCED_TABLE_NAME"] = target2.Substring(1).Trim(new char[] { '\'', '`' }); tokenizer.NextToken(); // read off the '(' } else { row["REFERENCED_TABLE_SCHEMA"] = table["TABLE_SCHEMA"]; row["REFERENCED_TABLE_NAME"] = target1.Substring(1).Trim(new char[] { '\'', '`' }); ; } // if we are supposed to include columns, read the target columns List targetColumns = includeColumns ? ParseColumns(tokenizer) : null; if (includeColumns) ProcessColumns(fkTable, row, srcColumns, targetColumns); else fkTable.Rows.Add(row); } private static List ParseColumns(MySqlTokenizer tokenizer) { List sc = new List(); string token = tokenizer.NextToken(); while (token != ")") { if (token != ",") sc.Add(token); token = tokenizer.NextToken(); } return sc; } private static void ProcessColumns(MySqlSchemaCollection fkTable, MySqlSchemaRow row, List srcColumns, List targetColumns) { for (int i = 0; i < srcColumns.Count; i++) { MySqlSchemaRow newRow = fkTable.AddRow(); row.CopyRow(newRow); newRow["COLUMN_NAME"] = srcColumns[i]; newRow["ORDINAL_POSITION"] = i; newRow["REFERENCED_COLUMN_NAME"] = targetColumns[i]; fkTable.Rows.Add(newRow); } } #endregion public virtual MySqlSchemaCollection GetUsers(string[] restrictions) { StringBuilder sb = new StringBuilder("SELECT Host, User FROM mysql.user"); if (restrictions != null && restrictions.Length > 0) sb.AppendFormat(CultureInfo.InvariantCulture, " WHERE User LIKE '{0}'", restrictions[0]); MySqlSchemaCollection c = QueryCollection("Users", sb.ToString()); c.Columns[0].Name = "HOST"; c.Columns[1].Name = "USERNAME"; return c; } public virtual MySqlSchemaCollection GetProcedures(string[] restrictions) { MySqlSchemaCollection dt = new MySqlSchemaCollection("Procedures"); dt.AddColumn("SPECIFIC_NAME", typeof(string)); dt.AddColumn("ROUTINE_CATALOG", typeof(string)); dt.AddColumn("ROUTINE_SCHEMA", typeof(string)); dt.AddColumn("ROUTINE_NAME", typeof(string)); dt.AddColumn("ROUTINE_TYPE", typeof(string)); dt.AddColumn("DTD_IDENTIFIER", typeof(string)); dt.AddColumn("ROUTINE_BODY", typeof(string)); dt.AddColumn("ROUTINE_DEFINITION", typeof(string)); dt.AddColumn("EXTERNAL_NAME", typeof(string)); dt.AddColumn("EXTERNAL_LANGUAGE", typeof(string)); dt.AddColumn("PARAMETER_STYLE", typeof(string)); dt.AddColumn("IS_DETERMINISTIC", typeof(string)); dt.AddColumn("SQL_DATA_ACCESS", typeof(string)); dt.AddColumn("SQL_PATH", typeof(string)); dt.AddColumn("SECURITY_TYPE", typeof(string)); dt.AddColumn("CREATED", typeof(DateTime)); dt.AddColumn("LAST_ALTERED", typeof(DateTime)); dt.AddColumn("SQL_MODE", typeof(string)); dt.AddColumn("ROUTINE_COMMENT", typeof(string)); dt.AddColumn("DEFINER", typeof(string)); StringBuilder sql = null; if (connection.driver.Version.isAtLeast(8, 0, 1)) { sql = new StringBuilder("SELECT * FROM information_schema.routines WHERE 1=1"); if (restrictions != null) { if (restrictions.Length >= 2 && restrictions[1] != null) sql.AppendFormat(CultureInfo.InvariantCulture, " AND routine_schema LIKE '{0}'", restrictions[1]); if (restrictions.Length >= 3 && restrictions[2] != null) sql.AppendFormat(CultureInfo.InvariantCulture, " AND routine_name LIKE '{0}'", restrictions[2]); if (restrictions.Length >= 4 && restrictions[3] != null) sql.AppendFormat(CultureInfo.InvariantCulture, " AND routine_type LIKE '{0}'", restrictions[3]); } MySqlCommand cmd = new MySqlCommand(sql.ToString(), connection); using (MySqlDataReader reader = cmd.ExecuteReader()) { while (reader.Read()) { MySqlSchemaRow row = dt.AddRow(); row["SPECIFIC_NAME"] = reader.GetString("specific_name"); row["ROUTINE_CATALOG"] = DBNull.Value; row["ROUTINE_SCHEMA"] = reader.GetString("routine_schema"); row["ROUTINE_NAME"] = reader.GetString("routine_name"); string routineType = reader.GetString("routine_type"); row["ROUTINE_TYPE"] = routineType; row["DTD_IDENTIFIER"] = StringUtility.ToLowerInvariant(routineType) == "function" ? (object)reader.GetString("DTD_IDENTIFIER") : DBNull.Value; row["ROUTINE_BODY"] = "SQL"; row["ROUTINE_DEFINITION"] = reader.GetString("routine_definition"); row["EXTERNAL_NAME"] = DBNull.Value; row["EXTERNAL_LANGUAGE"] = DBNull.Value; row["PARAMETER_STYLE"] = "SQL"; row["IS_DETERMINISTIC"] = reader.GetString("is_deterministic"); row["SQL_DATA_ACCESS"] = reader.GetString("sql_data_access"); row["SQL_PATH"] = DBNull.Value; row["SECURITY_TYPE"] = reader.GetString("security_type"); row["CREATED"] = reader.GetDateTime("created"); row["LAST_ALTERED"] = reader.GetDateTime("last_altered"); row["SQL_MODE"] = reader.GetString("sql_mode"); row["ROUTINE_COMMENT"] = reader.GetString("routine_comment"); row["DEFINER"] = reader.GetString("definer"); } } } else { sql = new StringBuilder("SELECT * FROM mysql.proc WHERE 1=1"); if (restrictions != null) { if (restrictions.Length >= 2 && restrictions[1] != null) sql.AppendFormat(CultureInfo.InvariantCulture, " AND db LIKE '{0}'", restrictions[1]); if (restrictions.Length >= 3 && restrictions[2] != null) sql.AppendFormat(CultureInfo.InvariantCulture, " AND name LIKE '{0}'", restrictions[2]); if (restrictions.Length >= 4 && restrictions[3] != null) sql.AppendFormat(CultureInfo.InvariantCulture, " AND type LIKE '{0}'", restrictions[3]); } MySqlCommand cmd = new MySqlCommand(sql.ToString(), connection); using (MySqlDataReader reader = cmd.ExecuteReader()) { while (reader.Read()) { MySqlSchemaRow row = dt.AddRow(); row["SPECIFIC_NAME"] = reader.GetString("specific_name"); row["ROUTINE_CATALOG"] = DBNull.Value; row["ROUTINE_SCHEMA"] = reader.GetString("db"); row["ROUTINE_NAME"] = reader.GetString("name"); string routineType = reader.GetString("type"); row["ROUTINE_TYPE"] = routineType; row["DTD_IDENTIFIER"] = StringUtility.ToLowerInvariant(routineType) == "function" ? (object)reader.GetString("returns") : DBNull.Value; row["ROUTINE_BODY"] = "SQL"; row["ROUTINE_DEFINITION"] = reader.GetString("body"); row["EXTERNAL_NAME"] = DBNull.Value; row["EXTERNAL_LANGUAGE"] = DBNull.Value; row["PARAMETER_STYLE"] = "SQL"; row["IS_DETERMINISTIC"] = reader.GetString("is_deterministic"); row["SQL_DATA_ACCESS"] = reader.GetString("sql_data_access"); row["SQL_PATH"] = DBNull.Value; row["SECURITY_TYPE"] = reader.GetString("security_type"); row["CREATED"] = reader.GetDateTime("created"); row["LAST_ALTERED"] = reader.GetDateTime("modified"); row["SQL_MODE"] = reader.GetString("sql_mode"); row["ROUTINE_COMMENT"] = reader.GetString("comment"); row["DEFINER"] = reader.GetString("definer"); } } } return dt; } protected virtual MySqlSchemaCollection GetCollections() { object[][] collections = { new object[] {"MetaDataCollections", 0, 0}, new object[] {"DataSourceInformation", 0, 0}, new object[] {"DataTypes", 0, 0}, new object[] {"Restrictions", 0, 0}, new object[] {"ReservedWords", 0, 0}, new object[] {"Databases", 1, 1}, new object[] {"Tables", 4, 2}, new object[] {"Columns", 4, 4}, new object[] {"Users", 1, 1}, new object[] {"Foreign Keys", 4, 3}, new object[] {"IndexColumns", 5, 4}, new object[] {"Indexes", 4, 3}, new object[] {"Foreign Key Columns", 4, 3}, new object[] {"UDF", 1, 1} }; MySqlSchemaCollection dt = new MySqlSchemaCollection("MetaDataCollections"); dt.AddColumn("CollectionName", typeof(string)); dt.AddColumn("NumberOfRestrictions", typeof(int)); dt.AddColumn("NumberOfIdentifierParts", typeof(int)); FillTable(dt, collections); return dt; } #if !NETSTANDARD1_3 private MySqlSchemaCollection GetDataSourceInformation() { MySqlSchemaCollection dt = new MySqlSchemaCollection("DataSourceInformation"); dt.AddColumn("CompositeIdentifierSeparatorPattern", typeof(string)); dt.AddColumn("DataSourceProductName", typeof(string)); dt.AddColumn("DataSourceProductVersion", typeof(string)); dt.AddColumn("DataSourceProductVersionNormalized", typeof(string)); dt.AddColumn("GroupByBehavior", typeof(GroupByBehavior)); dt.AddColumn("IdentifierPattern", typeof(string)); dt.AddColumn("IdentifierCase", typeof(IdentifierCase)); dt.AddColumn("OrderByColumnsInSelect", typeof(bool)); dt.AddColumn("ParameterMarkerFormat", typeof(string)); dt.AddColumn("ParameterMarkerPattern", typeof(string)); dt.AddColumn("ParameterNameMaxLength", typeof(int)); dt.AddColumn("ParameterNamePattern", typeof(string)); dt.AddColumn("QuotedIdentifierPattern", typeof(string)); dt.AddColumn("QuotedIdentifierCase", typeof(IdentifierCase)); dt.AddColumn("StatementSeparatorPattern", typeof(string)); dt.AddColumn("StringLiteralPattern", typeof(string)); dt.AddColumn("SupportedJoinOperators", typeof(SupportedJoinOperators)); DBVersion v = connection.driver.Version; string ver = $"{v.Major:0}.{v.Minor:0}.{v.Build:0}"; MySqlSchemaRow row = dt.AddRow(); row["CompositeIdentifierSeparatorPattern"] = "\\."; row["DataSourceProductName"] = "MySQL"; row["DataSourceProductVersion"] = connection.ServerVersion; row["DataSourceProductVersionNormalized"] = ver; row["GroupByBehavior"] = GroupByBehavior.Unrelated; row["IdentifierPattern"] = @"(^\`\p{Lo}\p{Lu}\p{Ll}_@#][\p{Lo}\p{Lu}\p{Ll}\p{Nd}@$#_]*$)|(^\`[^\`\0]|\`\`+\`$)|(^\"" + [^\""\0]|\""\""+\""$)"; row["IdentifierCase"] = IdentifierCase.Insensitive; row["OrderByColumnsInSelect"] = false; row["ParameterMarkerFormat"] = "{0}"; row["ParameterMarkerPattern"] = "(@[A-Za-z0-9_$#]*)"; row["ParameterNameMaxLength"] = 128; row["ParameterNamePattern"] = @"^[\p{Lo}\p{Lu}\p{Ll}\p{Lm}_@#][\p{Lo}\p{Lu}\p{Ll}\p{Lm}\p{Nd}\uff3f_@#\$]*(?=\s+|$)"; row["QuotedIdentifierPattern"] = @"(([^\`]|\`\`)*)"; row["QuotedIdentifierCase"] = IdentifierCase.Sensitive; row["StatementSeparatorPattern"] = ";"; row["StringLiteralPattern"] = "'(([^']|'')*)'"; row["SupportedJoinOperators"] = 15; dt.Rows.Add(row); return dt; } #endif private static MySqlSchemaCollection GetDataTypes() { MySqlSchemaCollection dt = new MySqlSchemaCollection("DataTypes"); dt.AddColumn("TypeName", typeof(string)); dt.AddColumn("ProviderDbType", typeof(int)); dt.AddColumn("ColumnSize", typeof(long)); dt.AddColumn("CreateFormat", typeof(string)); dt.AddColumn("CreateParameters", typeof(string)); dt.AddColumn("DataType", typeof(string)); dt.AddColumn("IsAutoincrementable", typeof(bool)); dt.AddColumn("IsBestMatch", typeof(bool)); dt.AddColumn("IsCaseSensitive", typeof(bool)); dt.AddColumn("IsFixedLength", typeof(bool)); dt.AddColumn("IsFixedPrecisionScale", typeof(bool)); dt.AddColumn("IsLong", typeof(bool)); dt.AddColumn("IsNullable", typeof(bool)); dt.AddColumn("IsSearchable", typeof(bool)); dt.AddColumn("IsSearchableWithLike", typeof(bool)); dt.AddColumn("IsUnsigned", typeof(bool)); dt.AddColumn("MaximumScale", typeof(short)); dt.AddColumn("MinimumScale", typeof(short)); dt.AddColumn("IsConcurrencyType", typeof(bool)); dt.AddColumn("IsLiteralSupported", typeof(bool)); dt.AddColumn("LiteralPrefix", typeof(string)); dt.AddColumn("LiteralSuffix", typeof(string)); dt.AddColumn("NativeDataType", typeof(string)); // have each one of the types contribute to the datatypes collection MySqlBit.SetDSInfo(dt); MySqlBinary.SetDSInfo(dt); MySqlDateTime.SetDSInfo(dt); MySqlTimeSpan.SetDSInfo(dt); MySqlString.SetDSInfo(dt); MySqlDouble.SetDSInfo(dt); MySqlSingle.SetDSInfo(dt); MySqlByte.SetDSInfo(dt); MySqlInt16.SetDSInfo(dt); MySqlInt32.SetDSInfo(dt); MySqlInt64.SetDSInfo(dt); MySqlDecimal.SetDSInfo(dt); MySqlUByte.SetDSInfo(dt); MySqlUInt16.SetDSInfo(dt); MySqlUInt32.SetDSInfo(dt); MySqlUInt64.SetDSInfo(dt); return dt; } protected virtual MySqlSchemaCollection GetRestrictions() { object[][] restrictions = { new object[] {"Users", "Name", "", 0}, new object[] {"Databases", "Name", "", 0}, new object[] {"Tables", "Database", "", 0}, new object[] {"Tables", "Schema", "", 1}, new object[] {"Tables", "Table", "", 2}, new object[] {"Tables", "TableType", "", 3}, new object[] {"Columns", "Database", "", 0}, new object[] {"Columns", "Schema", "", 1}, new object[] {"Columns", "Table", "", 2}, new object[] {"Columns", "Column", "", 3}, new object[] {"Indexes", "Database", "", 0}, new object[] {"Indexes", "Schema", "", 1}, new object[] {"Indexes", "Table", "", 2}, new object[] {"Indexes", "Name", "", 3}, new object[] {"IndexColumns", "Database", "", 0}, new object[] {"IndexColumns", "Schema", "", 1}, new object[] {"IndexColumns", "Table", "", 2}, new object[] {"IndexColumns", "ConstraintName", "", 3}, new object[] {"IndexColumns", "Column", "", 4}, new object[] {"Foreign Keys", "Database", "", 0}, new object[] {"Foreign Keys", "Schema", "", 1}, new object[] {"Foreign Keys", "Table", "", 2}, new object[] {"Foreign Keys", "Constraint Name", "", 3}, new object[] {"Foreign Key Columns", "Catalog", "", 0}, new object[] {"Foreign Key Columns", "Schema", "", 1}, new object[] {"Foreign Key Columns", "Table", "", 2}, new object[] {"Foreign Key Columns", "Constraint Name", "", 3}, new object[] {"UDF", "Name", "", 0} }; MySqlSchemaCollection dt = new MySqlSchemaCollection("Restrictions"); dt.AddColumn("CollectionName", typeof(string)); dt.AddColumn("RestrictionName", typeof(string)); dt.AddColumn("RestrictionDefault", typeof(string)); dt.AddColumn("RestrictionNumber", typeof(int)); FillTable(dt, restrictions); return dt; } private static MySqlSchemaCollection GetReservedWords() { MySqlSchemaCollection dt = new MySqlSchemaCollection("ReservedWords"); #if !NETSTANDARD1_3 dt.AddColumn(DbMetaDataColumnNames.ReservedWord, typeof(string)); Stream str = Assembly.GetExecutingAssembly().GetManifestResourceStream( "Externals.MySql.Data.Properties.ReservedWords.txt"); #else dt.AddColumn("ReservedWord", typeof(string)); Stream str = typeof(SchemaProvider).GetTypeInfo().Assembly.GetManifestResourceStream("Externals.MySql.Data.Properties.ReservedWords.txt"); #endif StreamReader sr = new StreamReader(str); string line = sr.ReadLine(); while (line != null) { MySqlSchemaRow row = dt.AddRow(); row[0] = line; line = sr.ReadLine(); } sr.Dispose(); return dt; } protected static void FillTable(MySqlSchemaCollection dt, object[][] data) { foreach (object[] dataItem in data) { MySqlSchemaRow row = dt.AddRow(); for (int i = 0; i < dataItem.Length; i++) row[i] = dataItem[i]; } } private void FindTables(MySqlSchemaCollection schema, string[] restrictions) { StringBuilder sql = new StringBuilder(); StringBuilder where = new StringBuilder(); sql.AppendFormat(CultureInfo.InvariantCulture, "SHOW TABLE STATUS FROM `{0}`", restrictions[1]); if (restrictions != null && restrictions.Length >= 3 && restrictions[2] != null) where.AppendFormat(CultureInfo.InvariantCulture, " LIKE '{0}'", restrictions[2]); sql.Append(where.ToString()); string table_type = restrictions[1].ToLower() == "information_schema" ? "SYSTEM VIEW" : "BASE TABLE"; MySqlCommand cmd = new MySqlCommand(sql.ToString(), connection); using (MySqlDataReader reader = cmd.ExecuteReader()) { while (reader.Read()) { MySqlSchemaRow row = schema.AddRow(); row["TABLE_CATALOG"] = null; row["TABLE_SCHEMA"] = restrictions[1]; row["TABLE_NAME"] = reader.GetString(0); row["TABLE_TYPE"] = table_type; row["ENGINE"] = GetString(reader, 1); row["VERSION"] = reader.GetValue(2); row["ROW_FORMAT"] = GetString(reader, 3); row["TABLE_ROWS"] = reader.GetValue(4); row["AVG_ROW_LENGTH"] = reader.GetValue(5); row["DATA_LENGTH"] = reader.GetValue(6); row["MAX_DATA_LENGTH"] = reader.GetValue(7); row["INDEX_LENGTH"] = reader.GetValue(8); row["DATA_FREE"] = reader.GetValue(9); row["AUTO_INCREMENT"] = reader.GetValue(10); row["CREATE_TIME"] = reader.GetValue(11); row["UPDATE_TIME"] = reader.GetValue(12); row["CHECK_TIME"] = reader.GetValue(13); row["TABLE_COLLATION"] = GetString(reader, 14); row["CHECKSUM"] = reader.GetValue(15); row["CREATE_OPTIONS"] = GetString(reader, 16); row["TABLE_COMMENT"] = GetString(reader, 17); } } } private static string GetString(MySqlDataReader reader, int index) { if (reader.IsDBNull(index)) return null; return reader.GetString(index); } public virtual MySqlSchemaCollection GetUDF(string[] restrictions) { string sql = "SELECT name,ret,dl FROM mysql.func"; if (restrictions?.Length >= 1 && !String.IsNullOrEmpty(restrictions[0])) sql += $" WHERE name LIKE '{restrictions[0]}'"; MySqlSchemaCollection dt = new MySqlSchemaCollection("User-defined Functions"); dt.AddColumn("NAME", typeof(string)); dt.AddColumn("RETURN_TYPE", typeof(int)); dt.AddColumn("LIBRARY_NAME", typeof(string)); MySqlCommand cmd = new MySqlCommand(sql, connection); try { using (MySqlDataReader reader = cmd.ExecuteReader()) { while (reader.Read()) { MySqlSchemaRow row = dt.AddRow(); row[0] = reader.GetString(0); row[1] = reader.GetInt32(1); row[2] = reader.GetString(2); } } } catch (MySqlException ex) { if (ex.Number != (int)MySqlErrorCode.TableAccessDenied) throw; throw new MySqlException(Resources.UnableToEnumerateUDF, ex); } return dt; } protected virtual MySqlSchemaCollection GetSchemaInternal(string collection, string[] restrictions) { switch (collection) { // common collections case "METADATACOLLECTIONS": return GetCollections(); #if !NETSTANDARD1_3 case "DATASOURCEINFORMATION": return GetDataSourceInformation(); #endif case "DATATYPES": return GetDataTypes(); case "RESTRICTIONS": return GetRestrictions(); case "RESERVEDWORDS": return GetReservedWords(); // collections specific to our provider case "USERS": return GetUsers(restrictions); case "DATABASES": return GetDatabases(restrictions); case "UDF": return GetUDF(restrictions); } // if we have a current database and our users have // not specified a database, then default to the currently // selected one. if (restrictions == null) restrictions = new string[2]; if (connection != null && connection.Database != null && connection.Database.Length > 0 && restrictions.Length > 1 && restrictions[1] == null) restrictions[1] = connection.Database; switch (collection) { case "TABLES": return GetTables(restrictions); case "COLUMNS": return GetColumns(restrictions); case "INDEXES": return GetIndexes(restrictions); case "INDEXCOLUMNS": return GetIndexColumns(restrictions); case "FOREIGN KEYS": return GetForeignKeys(restrictions); case "FOREIGN KEY COLUMNS": return GetForeignKeyColumns(restrictions); } return null; } internal string[] CleanRestrictions(string[] restrictionValues) { string[] restrictions = null; if (restrictionValues != null) { restrictions = (string[])restrictionValues.Clone(); for (int x = 0; x < restrictions.Length; x++) { string s = restrictions[x]; if (s == null) continue; restrictions[x] = s.Trim('`'); } } return restrictions; } protected MySqlSchemaCollection QueryCollection(string name, string sql) { MySqlSchemaCollection c = new MySqlSchemaCollection(name); MySqlCommand cmd = new MySqlCommand(sql, connection); MySqlDataReader reader = cmd.ExecuteReader(); for (int i = 0; i < reader.FieldCount; i++) c.AddColumn(reader.GetName(i), reader.GetFieldType(i)); using (reader) { while (reader.Read()) { MySqlSchemaRow row = c.AddRow(); for (int i = 0; i < reader.FieldCount; i++) row[i] = reader.GetValue(i); } } return c; } } } #endif