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Oracle® Fusion Middleware Java API Reference for Oracle Coherence 12c (12.1.3.0.0) E47890-01 |
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java.lang.Object
com.tangosol.util.Base
com.tangosol.util.BitHelper
com.tangosol.util.ExternalizableHelper
com.tangosol.util.filter.AbstractQueryRecorderFilter
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(java.lang.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(java.lang.Object o) Compare the ValueChangeEventFilter with another object to determine equality. |
boolean |
evaluate(java.lang.Object o) Apply the test to the object. |
protected boolean |
evaluateExtracted(java.lang.Object oExtracted) Evaluate the specified extracted value. |
int |
hashCode() Determine a hash value for the ValueChangeEventFilter object according to the general Object.hashCode() contract. |
java.lang.String |
toString() Return a human-readable description for this Filter. |
Methods inherited from class com.tangosol.util.filter.ExtractorFilter |
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applyIndex, calculateEffectiveness, calculateIteratorEffectiveness, evaluateEntry, extract, getValueExtractor, readExternal, readExternal, writeExternal, writeExternal |
Methods inherited from class com.tangosol.util.filter.AbstractQueryRecorderFilter |
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explain, explain, trace, trace, trace, trace |
Methods inherited from class com.tangosol.util.BitHelper |
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countBits, countBits, countBits, indexOfLSB, indexOfLSB, indexOfLSB, indexOfMSB, indexOfMSB, indexOfMSB, rotateLeft, rotateLeft, rotateLeft, rotateRight, rotateRight, rotateRight, toBitString, toBitString, toBitString, toBytes, toBytes, toBytes, toBytes, toInt, toInt, toLong, toLong |
Constructor Detail |
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public ValueChangeEventFilter()
public ValueChangeEventFilter(ValueExtractor extractor)
extractor
- ValueExtractor to extract MapEvent valuespublic ValueChangeEventFilter(java.lang.String sMethod)
sMethod
- the name of the method to invoke via reflectionMethod Detail |
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public boolean evaluate(java.lang.Object o)
evaluate
in interface Filter
evaluate
in class ExtractorFilter
o
- the object to testprotected boolean evaluateExtracted(java.lang.Object oExtracted)
evaluateExtracted
in class ExtractorFilter
oExtracted
- an extracted value to evaluatepublic boolean equals(java.lang.Object o)
public int hashCode()
Object.hashCode()
contract.public java.lang.String toString()
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Oracle® Fusion Middleware Java API Reference for Oracle Coherence 12c (12.1.3.0.0) E47890-01 |
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