init lserp cs 5.0

2026-07-10 15:25:05 +08:00
commit 90f3fda86a
3799 changed files with 976868 additions and 0 deletions
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+using System;
+
+namespace Zhaizj.Framework.Data {
+
+    /// <summary>
+    /// mysql ÌØÊâÓï·¨´¦ÀíÆ÷
+    /// </summary>
+    public class MysqlDialect : IDatabaseDialect {
+
+        public String GetConnectionItem( String connectionString, ConnectionItemType connectionItem ) {
+            return getConnectionItem( connectionString, connectionItem );
+        }
+
+
+        public static String getConnectionItem( String connStr, ConnectionItemType connectionItemType ) {
+
+            if (strUtil.IsNullOrEmpty( connStr )) throw new Exception( "mysql connection string is empty" );
+
+            String[] arrItems = connStr.ToLower().Split( ';' );
+
+            foreach (String item in arrItems) {
+
+                if (strUtil.IsNullOrEmpty( item )) continue;
+                String[] arrPair = item.Split( '=' );
+                if (arrPair.Length != 2) continue;
+
+                String key = arrPair[0].Trim();
+                String val = arrPair[1].Trim();
+
+                if (keyEqual( key, connectionItemType )) return val;
+
+            }
+
+            return "";
+        }
+
+        private static Boolean keyEqual( String key, ConnectionItemType connectionItemType ) {
+
+            if (connectionItemType == ConnectionItemType.Server) return key == "server";
+            if (connectionItemType == ConnectionItemType.Database) return key == "database";
+            if (connectionItemType == ConnectionItemType.UserId) return key == "user" || key == "uid" || key == "user id";
+            if (connectionItemType == ConnectionItemType.Password) return key == "password" || key == "pwd";
+
+            return false;
+        }
+
+        public String GetLimit( String sql, int limit ) {
+            return (sql + " limit " + limit);
+        }
+
+        public String GetLimit( String rSql ) {
+            if (rSql == null) return null;
+
+            String sql = rSql.ToLower();
+            if (sql.ToLower().IndexOf( " top " ) > 0) {
+
+                // selec top 10 * from
+                // 10 * from
+                String rMainSql = sql.Split( new String[] { " top " }, StringSplitOptions.None )[1].Trim();
+
+                String[] arrItem = rMainSql.Split( ' ' );
+                int limit = cvt.ToInt( arrItem[0] );
+
+                String mainSql = strUtil.TrimStart( rMainSql, arrItem[0] );
+
+
+                return this.GetLimit( "select " + mainSql, limit );
+            }
+
+            return sql;
+        }
+
+        public String GetTimeQuote() {
+            return "'";
+        }
+
+        public String GetParameter( String parameterName ) {
+            return ("@" + parameterName);
+        }
+
+        public String GetParameterAdder( String parameterName ) {
+            return ("@" + parameterName);
+        }
+
+        public String Top {
+            get { return "limit"; }
+        }
+
+        public string GetLeftQuote() {
+            return "`";
+        }
+
+        public string GetRightQuote() {
+            return "`";
+        }
+
+    }
+}
+