Class ValueChangeEventFilter

IFilter which evaluates the content of a CacheEventArgs values based on the specified value extractor.

Inheritance
object
ExtractorFilter
ValueChangeEventFilter
Implements
Inherited Members
Namespace: Tangosol.Util.Filter
Assembly: Coherence.dll
Syntax
public class ValueChangeEventFilter : ExtractorFilter, IEntryFilter, IFilter, IPortableObject
Remarks

This filter evaluates to true only for update events that change the value of an extracted attribute.

Example: a filter that evaluates to true if there is an update to an Employee object that changes a value of the LastName property. 
new ValueChangeEventFilter("LastName");

Constructors

ValueChangeEventFilter()

Default constructor.

Declaration
public ValueChangeEventFilter()

ValueChangeEventFilter(string)

Construct a ValueChangeEventFilter that evaluates CacheEventArgs values based on the specified member name.

Declaration
public ValueChangeEventFilter(string member)
Parameters
Type Name Description
string member

The name of the member to invoke via reflection.

ValueChangeEventFilter(IValueExtractor)

Construct a ValueChangeEventFilter that evaluates CacheEventArgs values based on the specified extractor.

Declaration
public ValueChangeEventFilter(IValueExtractor extractor)
Parameters
Type Name Description
IValueExtractor extractor

IValueExtractor to extract CacheEvent values.

Methods

Equals(object)

Compare the ValueChangeEventFilter with another object to determine equality.

Declaration
public override bool Equals(object o)
Parameters
Type Name Description
object o

The ValueChangeEventFilter to compare to.
Returns
Type Description
bool

true if this ValueChangeEventFilter and the passed object are equivalent filters.
Overrides

Evaluate(object)

Apply the test to the object.

Declaration
public override bool Evaluate(object o)
Parameters
Type Name Description
object o

An object to which the test is applied.
Returns
Type Description
bool

true if the test passes, false otherwise.
Overrides

EvaluateExtracted(object)

Evaluate the specified extracted value.

Declaration
protected override bool EvaluateExtracted(object extracted)
Parameters
Type Name Description
object extracted

An extracted value to evaluate.
Returns
Type Description
bool

true if the test passes, false otherwise.
Overrides

GetHashCode()

Determine a hash value for the ValueChangeEventFilter object according to the general object.GetHashCode() contract.

Declaration
public override int GetHashCode()
Returns
Type Description
int

An integer hash value for this ValueChangeEventFilter object.
Overrides

ToString()

Return a human-readable description for this ValueChangeEventFilter.

Declaration
public override string ToString()
Returns
Type Description
string

A String description of the ValueChangeEventFilter.
Overrides

Implements

See Also