330dc1a0d7
* Update Dapper for better support and pagination The update includes a significant enhancement to the Dapper module. Improvements were made to support SQL Server and enhanced SQL query pagination. Additionally, table column size was increased for various fields to handle more extensive data. Minor refactoring was also done to improve code readability. * Toggle SQL Server usage in Elsa Server The previous setting had SQL Server usage in Elsa server enabled by default. This commit changes the useSqlServer constant in Elsa.Server.Web to false, effectively switching SQL Server off unless manually activated.
106 lines
4 KiB
C#
106 lines
4 KiB
C#
using System.Text;
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using Elsa.Common.Entities;
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using Elsa.Common.Models;
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using Elsa.Dapper.Contracts;
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namespace Elsa.Dapper.Abstractions;
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/// <summary>
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/// Provides a base implementation of <see cref="ISqlDialect"/>, where the dialect defaults to SQLite.
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/// </summary>
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public abstract class SqlDialectBase : ISqlDialect
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{
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/// <inheritdoc />
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public virtual string From(string table) => From(table, "*");
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/// <inheritdoc />
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public virtual string From(string table, params string[] fields)
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{
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var fieldList = string.Join(", ", fields);
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return $"select {fieldList} from {table} where 1=1";
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}
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/// <inheritdoc />
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public string Delete(string table) => $"delete from {table} where 1=1";
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/// <inheritdoc />
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public string Count(string table) => Count("*", table);
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/// <inheritdoc />
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public string Count(string fieldExpression, string table) => $"select COUNT({fieldExpression}) from {table} where 1=1";
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/// <inheritdoc />
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public virtual string And(string field) => $"and {field} = @{field}";
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/// <inheritdoc />
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public virtual string AndNot(string field) => $"and not {field} = @{field}";
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/// <inheritdoc />
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public virtual string And(string field, string[] fieldParamNames) => $"and {field} in ({string.Join(", ", fieldParamNames)})";
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/// <inheritdoc />
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public virtual string AndNot(string field, string[] fieldParamNames) => $"and {field} not in ({string.Join(", ", fieldParamNames)})";
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/// <inheritdoc />
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public string IsNull(string field) => $"and {field} is null";
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/// <inheritdoc />
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public string IsNotNull(string field) => $"and {field} is not null";
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/// <inheritdoc />
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public virtual string OrderBy(string field, OrderDirection direction)
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{
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var directionString = direction == OrderDirection.Ascending ? "asc" : "desc";
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return $"order by {field} {directionString}";
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}
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/// <inheritdoc />
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public virtual string Skip(int count) => $"offset {count} rows";
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/// <inheritdoc />
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public virtual string Take(int count) => $"fetch next {count} rows only";
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/// <inheritdoc />
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public virtual string Page(PageArgs pageArgs)
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{
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var sb = new StringBuilder();
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// Attention: the order is important here for SQL Server (OFFSET before FETCH NEXT).
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if (pageArgs.Offset != null)
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sb.AppendLine(Skip(pageArgs.Offset.Value));
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if (pageArgs.Limit != null)
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sb.AppendLine(Take(pageArgs.Limit.Value));
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return sb.ToString();
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}
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/// <inheritdoc />
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public string Insert(string table, string[] fields, Func<string, string>? getParamName = default)
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{
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getParamName ??= x => x;
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var fieldList = string.Join(", ", fields);
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var fieldParamNames = fields.Select(x => $"@{getParamName(x)}");
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var fieldParamList = string.Join(", ", fieldParamNames);
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return $"INSERT INTO {table} ({fieldList}) VALUES ({fieldParamList});";
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}
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/// <inheritdoc />
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public virtual string Upsert(string table, string primaryKeyField, string[] fields, Func<string, string>? getParamName = default)
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{
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getParamName ??= x => x;
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var fieldList = string.Join(", ", fields);
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var fieldParamNames = fields.Select(x => $"@{getParamName(x)}");
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var fieldParamList = string.Join(", ", fieldParamNames);
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return @$"
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MERGE INTO {table} WITH (HOLDLOCK) AS Target
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USING (VALUES (@{getParamName(primaryKeyField)}, {fieldParamList}))
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AS Source ({primaryKeyField}, {fieldList})
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ON Target.{primaryKeyField} = Source.{primaryKeyField}
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WHEN MATCHED THEN
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UPDATE SET {string.Join(", ", fields.Select(x => $"{x} = Source.{x}"))}
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WHEN NOT MATCHED THEN
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INSERT ({primaryKeyField}, {fieldList})
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VALUES (Source.{primaryKeyField}, {string.Join(", ", fields.Select(x => $"Source.{x}"))});";
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}
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} |