Class AstDerivedColumnNode
AstDerivedColumnNode enables the definition of new columns in a dataflow task within a Derived Columns transformation.
Namespace: Varigence.Languages.Biml.Transformation
Assembly: Biml.dll
C#
public class AstDerivedColumnNode : AstNamedNode, IBindableItem, IGetJsonProvider, INamedNode, IReferenceableItem, IFrameworkItem, IValidationInfo, INamedItem
Inheritance AstNode
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Implements
Varigence.Utility.Collections.IVulcanCollectionParent, Varigence.Utility.ComponentModel.IVulcanNotifyPropertyChanged, Varigence.Utility.ComponentModel.IPropertyChangeNotificationTarget, System.ComponentModel.INotifyPropertyChanged, Varigence.Utility.Xml.IXObjectMappingProvider, System.ComponentModel.IDataErrorInfo, Varigence.Utility.Collections.IScopedNameIndexable,
Constructors
| Constructors | Description |
|---|---|
| AstDerivedColumnNode(IFrameworkItem) | Initializes a new instance of the AstDerivedColumnNode class with the specified parent node. |
Fields
| Fields | Description |
|---|---|
| ScopedNamePrefixBackingStore | |
| IsScopeImported |
Properties
| Properties | Description |
|---|---|
| CodePage | This value specifies the integer index for the codepage of the derived column. This property applies only to derived column types that support code pages, such as strings. Codepages supported by Windows are listed at: http://msdn.microsoft.com/en-us/goglobal/bb964654.aspx. |
| CodePageDefaultValue | Gets the default value for the CodePage property |
| DataType | This value specifies the type of the derived column node using a .NET DbType. |
| Expression | This value specifies the expression used to calculate the value of the derived column. The SSIS expression syntax is used. |
| ExpressionDefaultValue | Gets the default value for the Expression property |
| FriendlyTypeNameStatic | Gets the friendly name of the type of this node |
| Length | This value specifies the length parameter for the column type associated with this column. This property applies only to column types that support a length specification, such as String and Binary types. |
| LengthDefaultValue | Gets the default value for the Length property |
| Precision | This value specifies the precision, or the number of digits in a value. This property applies only to derived column types that support precision, such as decimal. |
| PrecisionDefaultValue | Gets the default value for the Precision property |
| ReplaceExisting | This value specifies whether this derived column definition should (1) replace an existing derived column definition with the same name or (2) create a new derived column with its own unique lineage. |
| ReplaceExistingDefaultValue | Gets the default value for the ReplaceExisting property |
| Scale | This value specifies the scale, the number of digits to the right of the decimal point in a value. This property applies only to derived column types that support precision, such as decimal. |
| ScaleDefaultValue | Gets the default value for the Scale property |
| SsisDataTypeOverride | Specifies the SSIS Data Type that should be used for the output column. This value overrides the value specified in the DataType property. |
| ScopedName | Gets the scoped name which can be used to uniquely identify this object among other objects of its type |
| SymbolTable | Gets a reference to the symbol table that stores a reference to this and all other named objects in the project |
| SsisSafeScopedName | Returns a version of the ScopedName that has been cleaned of invalid characters for SSIS. |
| SsisSafeName | Returns a version of the Name that has been cleaned of invalid characters for SSIS. |
| Name | Specifies the name of the object. This name can be used to reference this object from anywhere else in the program. |
| References | Gets collection of FrameworkItemReference objects, which track rich information about the properties that hold references to this node. |
| NameDefaultValue | Gets the default value for the Name property |
| Guid | |
| Annotations | This is a collection of annotation items that can be used to specify documentation, tags, or other information. Annotations are particularly useful for storing information about nodes that can be used by BimlScript code. |
| ObjectTag | This property provides a general purpose storage mechanism for .NET objects to be associated with AstNode objects. It supplements the annotation system, which is intended for use with string-based metadata. |
| BimlFile | This value specifies the BimlFile in which the Biml code that defines AstNode resides. |
| ItemLabel | Gets a label that can be used to identify this node |
| ParentItem | This value specifies the parent of the current node. All nodes must have a valid parent in the Biml framework, except for the root node. |
Methods
| Methods | Description |
|---|---|
| BindingScopeBoundaries() | Retrieves the permitted scope boundaries to bind references from this node. |
| Duplicate() | Creates a duplicate of the current node |
| Duplicate(IFrameworkItem) | Creates a duplicate of the current node with the specified parent item |
| GetDefaultValue(String) | Retrieves the default value for the property with the name propertyName |
| GetDefaultValue<T>(String) | Retrieves the default value for the property with the name propertyName |
| GetSchemaLocalName() | Retrieves the local XML element name that corresponds to this node in Biml code. |
| StructureEquals(Object) | Compares this node to the provided object to determine if all defined children and references are equal. |
| ToString() | Returns a string that represents the current object. In this case, it is the Name of the node. |
| OnScopedNameChanged(String, String) | |
| OnItemLabelChanged(String, String) | |
| OnNameChanging(String, String) | |
| OnNameChanged(String, String) | |
| AddScopedNameChangedEventListener(IReferenceableItem, EventHandler<VulcanPropertyChangedEventArgs>) | Adds the scoped name changed event handler to the specified referenceable item. |
| RemoveScopedNameChangedEventListener(IReferenceableItem, EventHandler<VulcanPropertyChangedEventArgs>) | Removes the scoped name changed event handler from the specified referenceable item. |
| FirstChildOfType<TChild>() | Gets the first defined descendant node of the specified type |
| RemoveFromParent() | Removes this node definition from its parent |
| DefinedAstNodes() | Retrieves a collection of nodes that have been defined as direct children of the current node. |
| GetJson() | Generates a JavaScript Object Notation (JSON) representation of the current node |
| GetExternalJson() | Generates a JavaScript Object Notation (JSON) representation of the current node |
| GetJson(Boolean, Boolean, Boolean, Boolean, Boolean) | Generates a JavaScript Object Notation (JSON) representation of the current node |
| GetXObjectName() | Gets the fully qualified XML element name for this node in the code document. |
| FirstParent<TAstNode>() | Retrieves the first parent or ancestor node of the specified type |
| FirstParent<TAstNode>(Type) | Retrieves the first parent or ancestor node of the specified type with the specified custom attribute type |
| FirstThisOrParent<TAstNode>() | Retrieves the first parent or ancestor node of the specified type, including this node |
| IsDirectAncestor(IFrameworkItem) | Retrieves a value indicating whether the specified node is a direct ancestor of this node. |
| AncestorDistance(IFrameworkItem) | Retrieves the number of steps between this node and the nearest shared ancestor with the specified relative node. |
| FirstThisOrParent<TAstNode>(Type) | Retrieves the first parent or ancestor node (including this node) of the specified type with the specified custom attribute type |
| AllDefinedSuccessors() | Retrieves the collection of all nodes defined as a child of this or any successor node or the current node |
| AllDefinedSuccessors(Boolean) | Retrieves the collection of all nodes defined as a child of this or any successor node or optionally the current node |
| OnNotificationTargetPropertyChanged(String) | |
| OnScopeBoundaryChanged(IScopeBoundary, IScopeBoundary) | |
| AddParseableChangedEventListener(IFlowFileChanged, EventHandler<EventArgs>) | |
| RemoveParseableChangedEventListener(IFlowFileChanged, EventHandler<EventArgs>) | |
| AddScopeBoundaryChangedEventListener(IFrameworkItem, EventHandler<VulcanPropertyChangedEventArgs>) | |
| RemoveScopeBoundaryChangedEventListener(IFrameworkItem, EventHandler<VulcanPropertyChangedEventArgs>) | |
| AddParsePendingChangedEventListener(IFlowFileChanged, EventHandler<EventArgs>) | |
| RemoveParsePendingChangedEventListener(IFlowFileChanged, EventHandler<EventArgs>) | |
| AddFromTemplateChangedEventListener(IFlowFileChanged, EventHandler<EventArgs>) | |
| RemoveFromTemplateChangedEventListener(IFlowFileChanged, EventHandler<EventArgs>) | |
| GetAllItemsReferencedByDefinedSuccessors() | Builds a list of all items referenced by this node and its successors. Each tuple in the returned list represents a FrameworkItemReference. The first item is the ReferencingItem, the second item is the property name, and the third item is the ReferencedItem. |
| ParseChild(XElement, ParserContext) | |
| ParseNameValueMapping(XElement) | |
| BindReference(SymbolTable, String, Boolean, String, Int32, Boolean) |