XLField Class |
Code of field: L (for Location)
Type of field: Latitude, longitude data, altitude in meters and precision factor (PF) in kilometers.
Applicable to:
Latitude and longitude values can be entered in degree/minute/second or in radian.
Namespace: Biolomics.BioCallback
The XLField type exposes the following members.
Name | Description | |
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XLField(XLField) |
Copy ctor
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XLField(TLField, XRecord) |
Initializes a new instance of the XLField class.
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XLField(XLField, XRecord) |
Copy ctor but into a new XRecord
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Name | Description | |
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Altitude |
Gets or sets the altitude.
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FieldValue |
Gets or sets the field value.
(Overrides XFieldFieldValue.) | |
IsModified |
Gets or sets a value indicating whether this instance is modified.
(Inherited from XField.) | |
Latitude |
Gets or sets the latitude.
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Longitude |
Gets or sets the longitude.
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Precision |
Gets or sets the precision.
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Name | Description | |
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CanRead |
Determines whether current connection can read from Field.
(Inherited from XField.) | |
CanWrite |
Determines whether current connection can write from Field.
(Inherited from XField.) | |
Clear |
Clears this instance.
(Inherited from XField.) | |
Clone |
Clones this instance.
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CloneAsXField |
We cannot use name 'Clone' here otherwise Implements vector.TId(Of XSField) fails because XSField.Clone() returns a XField instead of a XSField !!!
(Overrides XFieldCloneAsXField(XRecord).) | |
DataToView |
Converts field value to readable string.
(Inherited from XField.) | |
DataToView(Int32) |
Mandatory otherwise DataToView(5) returns letter 5 of string given by DataToView(), instead of the subfield value
(Inherited from XField.) | |
Equals |
Determines whether the specified Object is equal to this instance.
(Inherited from XField.) | |
Field |
each derived class embed its own TField member, which can be a TAField, TCField, TEField, etc.
this function must return that original TField
(Overrides XFieldField.) | |
FieldDef |
Gets the Field definition.
(Inherited from XField.) | |
FieldType |
The Field type.
(Inherited from XField.) | |
Finalize | Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.) | |
GetHashCode | Serves as the default hash function. (Inherited from Object.) | |
GetType | Gets the Type of the current instance. (Inherited from Object.) | |
ImportString |
Imports the string.
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Key |
Gets Field Key.
(Inherited from XField.) | |
MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) | |
ParentRecord |
Gets the parent record.
(Inherited from XField.) | |
Read |
Reads the Content from source object.
(Inherited from XField.) | |
Reset |
Resets this instance.
(Inherited from XField.) | |
SetDefaultValues |
Sets the default values.
(Inherited from XField.) | |
ToString | Returns a string that represents the current object. (Inherited from Object.) | |
Write |
Writes data into a TQuery
and Format it depending to field type
(Inherited from XField.) |
Imports System Imports BioloMICS.BioCallback Imports BioloMICS.SharedClasses Imports Biolomics.Utility.DatabaseConstants Public Class Program <STAThread()> Shared Sub Main() Dim program As New Program program.ChangeField() End Sub ' Write sub functions here Public Sub ChangeField() ' get the current connection Dim SqlCo As XConnection = Run.GetCurrentConnection() If SqlCo Is Nothing Then Return End If ' get a table from its User name Dim TableDef As XTableDef = SqlCo.GetTableDefByUserNameEng("Your_Table_Name") If TableDef Is Nothing Then ' may happen if that table doesn't exist Return End If ' load a Field from that table Dim FieldDefMap As New XFieldDefMap Dim FieldDef As XFieldDef = SqlCo.GetFieldByDBName("Your_L_Field_name", TableDef.Key) If FieldDef Is Nothing Then ' that field doesn't exist Return End If FieldDefMap.Add(FieldDef) ' load all records Dim Where As XWhere = XWhere.LTE(StaticFields.id, 10) Dim RecordMap As XRecordMap = Run.LoadRecords(TableDef.Key, FieldDefMap, Where) For Each Record As XRecord In RecordMap Dim Field As XLField = TryCast(Record.Fields(FieldDef.Key), XLField) If Field Is Nothing Then ' this field doesn't exist or is not a L-Field Continue For End If ' check the Latitude Field.Latitude = Math.Max(-90.0, Math.Min(90.0, Field.Latitude)) ' check the Longitude Field.Longitude = Math.Max(0.0, Math.Min(180.0, Field.Longitude)) ' if altitude is unknown, set it to 100 m If Double.IsNaN(Field.Altitude) Then Field.Altitude = 100.0 End If ' if precision is unknown, set it to 5 km If Double.IsNaN(Field.Precision) Then Field.Precision = 5.0 End If Record.Save(False) Next End Sub End Class