Query Class

Query Class

Note: This API is now obsolete.

Class to encapsulate a query.

Inheritance Hierarchy

SystemObject
[T:GemStone.GemFire.Cache.Internal.SBWrap<gemfire::Query>]
GemStone.GemFire.CacheQuery

Namespace: GemStone.GemFire.Cache
Assembly: Gemstone.Gemfire.Cache (in Gemstone.Gemfire.Cache.dll) Version: 9.0.6.18

Syntax

C++

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[ObsoleteAttribute("Use classes and APIs from the GemStone.GemFire.Cache.Generic namespace")]
public sealed class Query : [T:GemStone.GemFire.Cache.Internal.SBWrap<gemfire::Query>]

<ObsoleteAttribute("Use classes and APIs from the GemStone.GemFire.Cache.Generic namespace")>
Public NotInheritable Class Query
	Inherits [T:GemStone.GemFire.Cache.Internal.SBWrap<gemfire::Query>]

[ObsoleteAttribute(L"Use classes and APIs from the GemStone.GemFire.Cache.Generic namespace")]
public ref class Query sealed : public [T:GemStone.GemFire.Cache.Internal.SBWrap<gemfire::Query>]

[<SealedAttribute>]
[<ObsoleteAttribute("Use classes and APIs from the GemStone.GemFire.Cache.Generic namespace")>]
type Query =  
    class
        inherit [T:GemStone.GemFire.Cache.Internal.SBWrap<gemfire::Query>]
    end

The Query type exposes the following members.

Properties

	Name	Description
	IsCompiled	Check if the query is compiled -- NOT IMPLEMENTED.
	QueryString	Get the string for this query.

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Methods

	Name	Description
	Compile	Compile the given query -- NOT IMPLEMENTED.
	Equals	Determines whether the specified object is equal to the current object. (Inherited from Object.)
	Execute	Executes the OQL Query on the cache server and returns the results. The default timeout for the query is 15 secs.
	Execute(UInt32)	Executes the OQL Query on the cache server with the specified timeout and returns the results.
	Execute(IGFSerializable)	Executes the OQL Parameterized Query on the cache server with the specified paramList and returns the results. The default timeout for the query is 15 secs.
	Execute(IGFSerializable, UInt32)
	GetHashCode	Serves as the default hash function. (Inherited from Object.)
	GetType	Gets the Type of the current instance. (Inherited from Object.)
	ToString	Returns a string that represents the current object. (Inherited from Object.)

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Remarks

A Query is obtained from a QueryService which in turn is obtained from the Cache. This can be executed to return SelectResults which can be either a ResultSet or a StructSet. This class is intentionally not thread-safe. So multiple threads should not operate on the same Query object concurrently rather should have their own Query objects.

Reference

GemStone.GemFire.Cache Namespace