AF SDK Reference

AFSearchQueryToken Class

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AFSearchQueryToken Class

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Last UpdatedNov 18, 2025
4 minute read

Represents a nested search query.

Inheritance Hierarchy

SystemObject
  OSIsoft.AF.SearchAFSearchTokenBase
    OSIsoft.AF.SearchAFSearchFilterToken
      OSIsoft.AF.SearchAFSearchQueryToken

Namespace: OSIsoft.AF.Search
Assembly: OSIsoft.AFSDK (in OSIsoft.AFSDK.dll) Version: 3.1.1.1182

Syntax

[SerializableAttribute]
public class AFSearchQueryToken : AFSearchFilterToken

<SerializableAttribute>
Public Class AFSearchQueryToken
	Inherits AFSearchFilterToken

Dim instance As AFSearchQueryToken

[SerializableAttribute]
public ref class AFSearchQueryToken : public AFSearchFilterToken

[<SerializableAttribute>]
type AFSearchQueryToken =  
    class
        inherit AFSearchFilterToken
    end

The AFSearchQueryToken type exposes the following members.

Constructors

	Name	Description
	AFSearchQueryToken	Creates a nested AFSearchQueryToken instance for the Filter. Optionally, the initial TokenCollection may be set.

Properties

	Name	Description
	Filter	The filter to be searched with the current token. (Inherited from AFSearchTokenBase.)
	Operator	The search operator to perform on the search filter with the specified Value or Values. (Inherited from AFSearchFilterToken.)
	TokenCollection	The collection of AFSearchTokenBase to be used for a nested query.
	Value	The value to compare the search filter on using the specified Operator. (Inherited from AFSearchFilterToken.)
	Values	The array of values to compare the search filter on using the specified Operator. (Inherited from AFSearchFilterToken.)

Methods

	Name	Description
	Equals(Object)	Determines whether the specified Object is equal to the current object. (Inherited from AFSearchFilterToken.)
	Equals(AFSearchFilterToken)	Indicates whether the current object is equal to another object of the same type. (Overrides AFSearchFilterTokenEquals(AFSearchFilterToken).)
	Equals(AFSearchQueryToken)	Indicates whether the current object is equal to another object of the same type.
	Equals(AFSearchTokenBase)	Indicates whether the current object is equal to another object of the same type. (Overrides AFSearchFilterTokenEquals(AFSearchTokenBase).)
	GetHashCode	Gets the hash code for this instance of the object which is suitable for use in hashing algorithms and data structures like a hash table. (Overrides AFSearchFilterTokenGetHashCode.)
	GetType	Gets the Type of the current instance. (Inherited from Object.)
	ToString	Returns a String that represents the current object. (Overrides AFSearchFilterTokenToString.)

Remarks

This class represents a nested search query.

The AFSearchFilter and AFSearchOperator topics provide more information about the filters and operators that can be used in a search token.

Examples

// The following query string and code will generate the same token collections.
IList<AFSearchTokenBase> tokensParsed = AFSearch.ParseQueryString("Parent:{ Name:Tank* OR Name:Valve* }");
IList<AFSearchTokenBase> tokens = new AFSearchTokenBase[]
{
    new AFSearchQueryToken(AFSearchFilter.Parent, new AFSearchTokenBase[]
    {
        new AFSearchExpressionToken(AFSearchLogicalOperator.Or, new AFSearchTokenBase[]
        {
            new AFSearchFilterToken(AFSearchFilter.Name, "Tank*"),
            new AFSearchFilterToken(AFSearchFilter.Name, "Valve*")
        })
    })
};

' The following query string and code will generate the same token collections.
Dim tokensParsed As IList(Of AFSearchTokenBase) = AFSearch.ParseQueryString("Parent:{ Name:Tank* OR Name:Valve* }")
Dim tokens As IList(Of AFSearchTokenBase) = New AFSearchTokenBase() {
    New AFSearchQueryToken(AFSearchFilter.Parent, New AFSearchTokenBase() {
        New AFSearchExpressionToken(AFSearchLogicalOperator.Or, New AFSearchTokenBase() {
                New AFSearchFilterToken(AFSearchFilter.Name, "Tank*"),
                New AFSearchFilterToken(AFSearchFilter.Name, "Valve*")
            })
        })
    }

No code example is currently available or this language may not be supported.

Version Information

AFSDK

Supported in: 3.1.1, 3.1.0, 3.0.2, 3.0.1, 3.0.0, 2.10.11, 2.10.5

AF SDK Reference