Class AstTermExtractionNode
The Term Extraction transformation extracts terms from input text columns and directs the terms to output text columns.
public class AstTermExtractionNode : AstSingleInTransformationNode, IBindableItem, IVulcanCollectionParent, IVulcanNotifyPropertyChanged, IPropertyChangeNotificationTarget, IGetJsonProvider, INamedNode, IScopeBoundary, IReferenceableItem, IFrameworkItem, INotifyPropertyChanged, IXObjectMappingProvider, IValidationInfo, IDataErrorInfo, INamedItem, IScopedNameIndexable, IDataflowItem
- Inheritance
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System.ObjectAstTermExtractionNode
- Derived
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AstTermExtractionNode
IBindableItem, Varigence.Utility.Collections.IVulcanCollectionParent, Varigence.Utility.ComponentModel.IVulcanNotifyPropertyChanged, Varigence.Utility.ComponentModel.IPropertyChangeNotificationTarget, IGetJsonProvider, INamedNode, IScopeBoundary, IReferenceableItem, IFrameworkItem, System.ComponentModel.INotifyPropertyChanged, Varigence.Utility.Xml.IXObjectMappingProvider, IValidationInfo, System.ComponentModel.IDataErrorInfo, INamedItem, Varigence.Utility.Collections.IScopedNameIndexable, IDataflowItem,
Constructors
| AstTermExtractionNode(IFrameworkItem) | Initializes a new instance of the AstTermExtractionNode class with the specified parent node. |
Properties
| CaseSensitiveTermExtraction | This value specifies whether the Term Extraction process is case sensitive. The default value is False. |
| CaseSensitiveTermExtractionDefaultValue | Gets the default value for the CaseSensitiveTermExtraction property |
| ErrorPath | Gets the error output path for this transformation |
| ExclusionTableConnection | This value specifies the name of the OLE DB connection that is used to connect to the exclusion term table. |
| ExclusionTermColumn | This values specifies which column contains terms that are skipped during the processing of extracting terms from the data source. |
| FriendlyTypeName | Gets the friendly name of the type of this node |
| FriendlyTypeNameStatic | Gets the friendly name of the type of this node |
| OutputPath | Gets the output path for this transformation. This is the preferred output path and will automatically connect to any single-input transformation nodes that directly follow it in the Biml file. |
| ScoreOutputColumn | This value specifies the name of the dataflow column to use for the score output. The default value is "Score". |
| ScoreOutputColumnDefaultValue | Gets the default value for the ScoreOutputColumn property |
| ScoreType | This value specifies what kind of score is associated with an extracted term. The default value is that the frequency of a term is used as the score. |
| ScoreTypeDefaultValue | Gets the default value for the ScoreType property |
| TermExtractionColumn | This value specifies the name of the term extraction column. |
| TermExtractionColumnDefaultValue | Gets the default value for the TermExtractionColumn property |
| TermFrequencyThreshold | Specifies the frequency threshold above which a term is extracted. |
| TermFrequencyThresholdDefaultValue | Gets the default value for the TermFrequencyThreshold property |
| TermMaxLength | This value specifies the maximum number of words allowed in a term. The default value is 12. |
| TermMaxLengthDefaultValue | Gets the default value for the TermMaxLength property |
| TermOutputColumn | This value specifies the name of the dataflow column to use for the term output. The default value is "Term". |
| TermOutputColumnDefaultValue | Gets the default value for the TermOutputColumn property |
| TermType | This value specifies the type of terms to extract. The default value is that noun and noun phrases are extracted. |
| TermTypeDefaultValue | Gets the default value for the TermType property |
Methods
| BindingScopeBoundaries() | Retrieves the permitted scope boundaries to bind references from this node. |
| BindReference(SymbolTable, String, Boolean, String, Int32, Boolean) | |
| CopyFrom(IFrameworkItem, UnboundReferences) | Instructs the node to copy property values from the supplied node into itself. This method should only be used by the internal Biml framework. |
| DefinedAstNodes() | Retrieves a collection of nodes that have been defined as direct children of the current node. |
| Duplicate() | Creates a duplicate of the current node |
| Duplicate(Dictionary<IFrameworkItem, IFrameworkItem>) | Creates a duplicate of the current node with the scoped node mapping |
| Duplicate(IFrameworkItem) | Creates a duplicate of the current node with the specified parent item |
| Duplicate(IFrameworkItem, Dictionary<IFrameworkItem, IFrameworkItem>) | Creates a duplicate of the current node with the specified parent item and scoped node mapping |
| DuplicateHusk(IFrameworkItem) | Creates an empty object into which the values from the current node will be duplicated. This method should only be used by the internal Biml framework |
| DuplicateInto(IFrameworkItem, Dictionary<IFrameworkItem, IFrameworkItem>) | Copies the values from the current node into a husk object with the specified scoped node mapping. This method should only be used by the internal Biml framework |
| EmitXmlForAction(AstEnginePropertyAction) | Instructs the node to make changes to its underlying Biml code that correspond to the provided action. This method should only be used by the internal Biml framework. |
| EmitXmlForProperty(String, Int32) | Instructs the node to make changes to its underlying Biml code that correspond to the provided property and index. This method should only be used by the internal Biml framework. |
| ForceNull(String, Int32) | Internal method used by the compiler to make a propert value null when required by the binding framework. |
| 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. |
| GetBimlAttributeFragment(CulturedStringBuilder) | |
| GetBimlChildFragment(CulturedStringBuilder, Int32) | |
| GetBimlFragment(CulturedStringBuilder, Int32, Boolean) | Internal method used by the Biml engine to produce the XML code for the current object. |
| 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 |
| GetJson(StringBuilder, ref Boolean, Boolean, Boolean, Boolean, Boolean, Boolean, Boolean, Boolean) | Generates a JavaScript Object Notation (JSON) representation of the current node |
| GetPotentialParentProperties() | Retrieves the reflection information for related properties of this node type. |
| GetPropertyValue(String) | Retrieves the current value for the property with the name propertyName |
| GetReflectionInfoFromXmlParsePath(String) | Retrieves the reflection information corresponding to the Xml parse path beginning at this node. |
| HasAnyBimlChildNodes() | |
| MergeFrom(IFrameworkItem, UnboundReferences, Boolean) | Instructs the node to merge property values from the supplied node into itself. This method should only be used by the internal Biml framework. |
| ParseAttribute(XAttribute, ParserContext) | |
| ParseChild(XElement, ParserContext) | |
| StructureEquals(Object) | Compares this node to the provided object to determine if all defined children and references are equal. |
| Validate(ValidationReporter) | Retrieves a collection of validation and diagnostic messages for the current node. |