/// <summary>
/// 更新实例。
/// </summary>
/// <param name="entityType">模型实例。</param>
/// <param name="expression">条件表达式。</param>
/// <param name="parameters">匿名对象。</param>
/// <returns>返回SQL构建实例。</returns>
public virtual SqlIndentedStringBuilder Update(IEntityType entityType, Expression expression, object parameters)
{
var builder = new SqlIndentedStringBuilder();
builder.Append("UPDATE ").Append(SqlHelper.DelimitIdentifier(entityType.Table)).Append(" SET ");
builder.CreateObjectParameters(parameters);
builder.JoinAppend(builder.Parameters.Keys.Select(
name => $"{SqlHelper.DelimitIdentifier(name)}={SqlHelper.Parameterized(name)}"));
builder.AppendEx(Visit(expression), " WHERE {0}").Append(SqlHelper.StatementTerminator);
return(builder);
}
/// <summary>
/// 通过唯一主键更新实例。
/// </summary>
/// <param name="entityType">模型实例。</param>
/// <param name="parameters">匿名对象。</param>
/// <returns>返回SQL构建实例。</returns>
public virtual SqlIndentedStringBuilder Update(IEntityType entityType, object parameters)
{
var builder = new SqlIndentedStringBuilder();
builder.Append("UPDATE ").Append(SqlHelper.DelimitIdentifier(entityType.Table)).Append(" SET ");
builder.CreateObjectParameters(parameters);
builder.JoinAppend(builder.Parameters.Keys.Select(
name => $"{SqlHelper.DelimitIdentifier(name)}={SqlHelper.Parameterized(name)}"));
AppendWherePrimaryKey(builder, entityType);
return(builder);
}