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Oracle® Coherence Java API Reference Release 3.7.1.0 E22843-01 |
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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
public abstract class ExtractorFilter
Base Filter implementation for doing extractor-based processing.
Field Summary | |
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static int |
EVAL_COST The evaluation cost as a factor to the single index access operation. |
protected ValueExtractor |
m_extractor The ValueExtractor used by this filter. |
Constructor Summary | |
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ExtractorFilter() Default constructor (necessary for the ExternalizableLite interface). |
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ExtractorFilter(java.lang.String sMethod) Construct an ExtractorFilter for a given method name. |
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ExtractorFilter(ValueExtractor extractor) Construct a ExtractorFilter for a given ValueExtractor. |
Method Summary | |
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boolean |
evaluate(java.lang.Object oTarget) Apply the test to the object. |
boolean |
evaluateEntry(java.util.Map.Entry entry) Apply the test to a Map Entry. |
protected abstract boolean |
evaluateExtracted(java.lang.Object oExtracted) Evaluate the specified extracted value. |
protected java.lang.Object |
extract(java.lang.Object o) Get the result of ValueExtractor invocation. |
ValueExtractor |
getValueExtractor() Obtain the ValueExtractor used by this filter. |
void |
readExternal(java.io.DataInput in) Restore the contents of this object by loading the object's state from the passed DataInput object. |
void |
readExternal(PofReader in) Restore the contents of a user type instance by reading its state using the specified PofReader object. |
void |
writeExternal(java.io.DataOutput out) Save the contents of this object by storing the object's state into the passed DataOutput object. |
void |
writeExternal(PofWriter out) Save the contents of a POF user type instance by writing its state using the specified PofWriter object. |
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 |
Field Detail |
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public static int EVAL_COST
IndexAwareFilter.calculateEffectiveness(Map, Set)
protected ValueExtractor m_extractor
Constructor Detail |
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public ExtractorFilter()
public ExtractorFilter(ValueExtractor extractor)
extractor
- the ValueExtractor to use by this filterpublic ExtractorFilter(java.lang.String sMethod)
sMethod
- a method name to make a ReflectionExtractor
for; this parameter can also be a dot-delimited sequence of method names which would result in an ExtractorFilter based on the ChainedExtractor
that is based on an array of corresponding ReflectionExtractor objectsMethod Detail |
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public boolean evaluate(java.lang.Object oTarget)
evaluate
in interface Filter
oTarget
- the object to testpublic boolean evaluateEntry(java.util.Map.Entry entry)
evaluateEntry
in interface EntryFilter
entry
- the Map Entry to evaluate; never nullprotected abstract boolean evaluateExtracted(java.lang.Object oExtracted)
oExtracted
- an extracted value to evaluateprotected java.lang.Object extract(java.lang.Object o)
o
- the object on which to invoke the ValueExtractor; must not be nullWrapperException
- if this ValueExtractor encounters an exception in the course of extracting the valuepublic ValueExtractor getValueExtractor()
public void readExternal(java.io.DataInput in) throws java.io.IOException
readExternal
in interface ExternalizableLite
in
- the DataInput stream to read data from in order to restore the state of this objectjava.io.IOException
- if an I/O exception occursjava.io.NotActiveException
- if the object is not in its initial state, and therefore cannot be deserialized intopublic void writeExternal(java.io.DataOutput out) throws java.io.IOException
writeExternal
in interface ExternalizableLite
out
- the DataOutput stream to write the state of this object tojava.io.IOException
- if an I/O exception occurspublic void readExternal(PofReader in) throws java.io.IOException
readExternal
in interface PortableObject
in
- the PofReader from which to read the object's statejava.io.IOException
- if an I/O error occurspublic void writeExternal(PofWriter out) throws java.io.IOException
writeExternal
in interface PortableObject
out
- the PofWriter to which to write the object's statejava.io.IOException
- if an I/O error occurs
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Oracle® Coherence Java API Reference Release 3.7.1.0 E22843-01 |
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