Class ReflectionExtractor

Reflection-based IValueExtractor implementation.

Inheritance

object

AbstractExtractor

ReflectionExtractor

Implements

Inherited Members

AbstractExtractor.Target

AbstractExtractor.Compare(object, object)

AbstractExtractor.CompareEntries(IQueryCacheEntry, IQueryCacheEntry)

AbstractExtractor.ExtractFromEntry(ICacheEntry)

AbstractExtractor.ExtractOriginalFromEntry(CacheEntry)

AbstractExtractor.VALUE

AbstractExtractor.KEY

AbstractExtractor.m_target

object.Equals(object, object)

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

Namespace: Tangosol.Util.Extractor

Assembly: Coherence.dll

Syntax

public class ReflectionExtractor : AbstractExtractor, IQueryCacheComparer, IComparer, IValueExtractor, IPortableObject

Constructors

ReflectionExtractor()

Default constructor.

Declaration

public ReflectionExtractor()

ReflectionExtractor(string)

Construct a ReflectionExtractor based on a member name.

Declaration

public ReflectionExtractor(string member)

Parameters

Type	Name	Description
string	member	The name of the member to invoke via reflection.

ReflectionExtractor(string, object[])

Construct a ReflectionExtractor.

Declaration

public ReflectionExtractor(string member, object[] parameters)

Parameters

Type	Name	Description
string	member	The name of the member to invoke via reflection.
object[]	parameters	The array of arguments to be used in the method invocation; may be `null`.

ReflectionExtractor(string, object[], int)

Construct a ReflectionExtractor based on a method name, optional parameters and the entry extraction target.

Declaration

public ReflectionExtractor(string member, object[] parameters, int target)

Parameters

Type	Name	Description
string	member	The name of the member to invoke via reflection.
object[]	parameters	The array of arguments to be used in the method invocation; may be `null`.
int	target	One of the VALUE or KEY values

Fields

m_memberName

The name of the member to invoke.

Declaration

protected string m_memberName

Field Value

Type	Description
string

m_parameters

The parameter array.

Declaration

protected object[] m_parameters

Field Value

Type	Description
object[]

Properties

MemberName

Determine the name of the member that this extractor is configured to invoke.

Declaration

public virtual string MemberName { get; }

Property Value

Type	Description
string	The name of the member to invoke using reflection.

Parameters

Gets the array of arguments used to invoke the method.

Declaration

public virtual object[] Parameters { get; }

Property Value

Type	Description
object[]	The array of arguments used to invoke the method.

Methods

Equals(object)

Compare the IValueExtractor with another object to determine equality.

Declaration

public override bool Equals(object o)

Parameters

Type	Name	Description
object	o	The object to compare with.

Returns

Type	Description
bool	true iff this IValueExtractor and the passed object are quivalent IValueExtractors.

Overrides

object.Equals(object)

Remarks

Two IValueExtractor objects, ve1 and ve2 are considered equal iff ve1.Extract(o) equals ve2.Extract(o) for all values of o.

Extract(object)

Extract the value from the passed object.

Declaration

public override object Extract(object target)

Parameters

Type	Name	Description
object	target	An object to retrieve the value from.

Returns

Type	Description
object	The extracted value as an object; `null` is an acceptable value.

Overrides

AbstractExtractor.Extract(object)

Remarks

The returned value may be null.

Exceptions

Type	Condition
InvalidCastException	If this IValueExtractor is incompatible with the passed object to extract a value from and the implementation requires the passed object to be of a certain type.
ArgumentException	If this IValueExtractor cannot handle the passed object for any other reason; an implementor should include a descriptive message.

GetHashCode()

Determine a hash value for the IValueExtractor object according to the general object.GetHashCode contract.

Declaration

public override int GetHashCode()

Returns

Type	Description
int	An integer hash value for this IValueExtractor object.

Overrides

object.GetHashCode()

ReadExternal(IPofReader)

Restore the contents of a user type instance by reading its state using the specified IPofReader object.

Declaration

public virtual void ReadExternal(IPofReader reader)

Parameters

Type	Name	Description
IPofReader	reader	The IPofReader from which to read the object's state.

Exceptions

Type	Condition
IOException	If an I/O error occurs.

ToString()

Provide a human-readable description of this IValueExtractor object.

Declaration

public override string ToString()

Returns

Type	Description
string	A human-readable description of this IValueExtractor object.

Overrides

object.ToString()

WriteExternal(IPofWriter)

Save the contents of a POF user type instance by writing its state using the specified IPofWriter object.

Declaration

public virtual void WriteExternal(IPofWriter writer)

Parameters

Type	Name	Description
IPofWriter	writer	The IPofWriter to which to write the object's state.

Exceptions

Type	Condition
IOException	If an I/O error occurs.

Implements

IQueryCacheComparer

IComparer

IValueExtractor

IPortableObject