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CoherenceTM v3.3 Copyright© 2000-2007 by Oracle Corporation |
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java.lang.Objectcom.tangosol.util.Base
com.tangosol.util.BitHelper
com.tangosol.util.ExternalizableHelper
com.tangosol.util.filter.ExtractorFilter
com.tangosol.util.filter.ValueChangeEventFilter
public class ValueChangeEventFilter
Filter which evaluates the content of a MapEvent values based on the specified value extractor. 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");
MapEventFilter
Field Summary |
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Fields inherited from class com.tangosol.util.filter.ExtractorFilter |
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EVAL_COST, m_extractor |
Constructor Summary | |
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ValueChangeEventFilter()
Default constructor (necessary for the ExternalizableLite interface). |
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ValueChangeEventFilter(String sMethod)
Construct a ValueChangeEventFilter that evaluates MapEvent values based on the specified method name. |
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ValueChangeEventFilter(ValueExtractor extractor)
Construct a ValueChangeEventFilter that evaluates MapEvent values based on the specified extractor. |
Method Summary | |
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boolean |
equals(Object o)
Compare the ValueChangeEventFilter with another object to determine equality. |
boolean |
evaluate(Object o)
Apply the test to the object. |
protected boolean |
evaluateExtracted(Object oExtracted)
Evaluate the specified extracted value. |
int |
hashCode()
Determine a hash value for the ValueChangeEventFilter object according to the general Object.hashCode() contract. |
String |
toString()
Return a human-readable description for this Filter. |
Methods inherited from class com.tangosol.util.filter.ExtractorFilter |
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evaluateEntry, extract, getValueExtractor, readExternal, readExternal, writeExternal, writeExternal |
Methods inherited from class com.tangosol.util.BitHelper |
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countBits, countBits, countBits, indexOfLSB, indexOfLSB, indexOfLSB, indexOfMSB, indexOfMSB, indexOfMSB, toBitString, toBitString, toBitString |
Constructor Detail |
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public ValueChangeEventFilter()
public ValueChangeEventFilter(ValueExtractor extractor)
extractor
- ValueExtractor to extract MapEvent valuespublic ValueChangeEventFilter(String sMethod)
sMethod
- the name of the method to invoke via reflectionMethod Detail |
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public boolean evaluate(Object o)
evaluate
in interface Filter
evaluate
in class ExtractorFilter
protected boolean evaluateExtracted(Object oExtracted)
evaluateExtracted
in class ExtractorFilter
oExtracted
- an extracted value to evaluatepublic boolean equals(Object o)
public int hashCode()
Object.hashCode()
contract.
public String toString()
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CoherenceTM v3.3 Copyright© 2000-2007 by Oracle Corporation |
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