99 lines
3.4 KiB
VB.net
99 lines
3.4 KiB
VB.net
#Region "Microsoft.VisualBasic::7f24c2ef06dc7b20508e8d8ced1f3148, Microsoft.VisualBasic.Core\Extensions\WebServices\RequestBuilder.vb"
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' Author:
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'
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' asuka (amethyst.asuka@gcmodeller.org)
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' xie (genetics@smrucc.org)
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' xieguigang (xie.guigang@live.com)
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'
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' Copyright (c) 2018 GPL3 Licensed
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'
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'
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' GNU GENERAL PUBLIC LICENSE (GPL3)
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'
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'
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' This program is free software: you can redistribute it and/or modify
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' it under the terms of the GNU General Public License as published by
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' the Free Software Foundation, either version 3 of the License, or
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' (at your option) any later version.
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'
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' This program is distributed in the hope that it will be useful,
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' but WITHOUT ANY WARRANTY; without even the implied warranty of
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' MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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' GNU General Public License for more details.
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'
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' You should have received a copy of the GNU General Public License
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' along with this program. If not, see <http://www.gnu.org/licenses/>.
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' /********************************************************************************/
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' Summaries:
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' Module RequestBuilder
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'
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' Function: BuildParameters, IsPrimitive
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'
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'
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' /********************************************************************************/
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#End Region
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Imports System.Reflection
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Imports System.Runtime.CompilerServices
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Imports Microsoft.VisualBasic.ComponentModel.DataSourceModel
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Imports Microsoft.VisualBasic.ComponentModel.DataSourceModel.SchemaMaps
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Imports Microsoft.VisualBasic.ComponentModel.DataSourceModel.SchemaMaps.DataFrameColumnAttribute
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Imports Microsoft.VisualBasic.Language
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Namespace Net.Http
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Public Module RequestBuilder
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''' <summary>
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''' Encoding a class object as url parameters.
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''' (当前的这个函数操作里面已经包含有了URL的编码工作了)
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''' </summary>
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''' <typeparam name="T"></typeparam>
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''' <param name="obj"></param>
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''' <returns></returns>
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<Extension>
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Public Function BuildParameters(Of T As Class)(obj As T) As String
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Dim type As Type = GetType(T)
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Dim args As New List(Of NamedValue(Of String))
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Dim ps = LoadMapping(type, mapsAll:=True)
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For Each p As BindProperty(Of DataFrameColumnAttribute) In ps.Values.Where(IsPrimitive)
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Dim value As Object = p.GetValue(obj)
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If Not value Is Nothing Then
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Dim str$
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If value.GetType.IsEnum Then
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str = DirectCast(value, [Enum]).Description
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Else
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str = value.ToString
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End If
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args += New NamedValue(Of String) With {
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.Value = str,
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.Name = p.field.Name
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}
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End If
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Next
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Dim param As String = args _
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.Select(Function(o) $"{o.Name}={o.Value.UrlEncode}") _
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.JoinBy("&")
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Return param
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End Function
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Private Function IsPrimitive() As Func(Of BindProperty(Of DataFrameColumnAttribute), Boolean)
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Return Function(o)
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Return DataFramework.IsPrimitive(DirectCast(o.member, PropertyInfo).PropertyType)
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End Function
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End Function
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End Module
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End Namespace
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