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CoherenceTM v3.3 Copyright© 2000-2007 by Oracle Corporation |
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java.lang.Object com.tangosol.util.Base com.tangosol.util.BitHelper com.tangosol.util.ExternalizableHelper 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(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(Object oTarget)
Apply the test to the object. |
boolean |
evaluateEntry(Map.Entry entry)
Apply the test to a Map Entry. |
protected abstract boolean |
evaluateExtracted(Object oExtracted)
Evaluate the specified extracted value. |
protected Object |
extract(Object o)
Get the result of ValueExtractor invocation. |
ValueExtractor |
getValueExtractor()
Obtain the ValueExtractor used by this filter. |
void |
readExternal(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(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.BitHelper |
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countBits, countBits, countBits, indexOfLSB, indexOfLSB, indexOfLSB, indexOfMSB, indexOfMSB, indexOfMSB, 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(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(Object oTarget)
evaluate
in interface Filter
public boolean evaluateEntry(Map.Entry entry)
evaluateEntry
in interface EntryFilter
entry
- the Map Entry to evaluate; never null
protected abstract boolean evaluateExtracted(Object oExtracted)
oExtracted
- an extracted value to evaluateprotected Object extract(Object o)
o
- the object on which to invoke the ValueExtractor;
must not be null
WrapperException
- if this ValueExtractor
encounters an exception in the course of extracting the valuepublic ValueExtractor getValueExtractor()
public void readExternal(DataInput in) throws IOException
readExternal
in interface ExternalizableLite
in
- the DataInput stream to read data from in order to restore
the state of this object
IOException
- if an I/O exception occurs
NotActiveException
- if the object is not in its initial
state, and therefore cannot be deserialized intopublic void writeExternal(DataOutput out) throws IOException
writeExternal
in interface ExternalizableLite
out
- the DataOutput stream to write the state of this object to
IOException
- if an I/O exception occurspublic void readExternal(PofReader in) throws IOException
readExternal
in interface PortableObject
in
- the PofReader from which to read the object's state
IOException
- if an I/O error occurspublic void writeExternal(PofWriter out) throws IOException
writeExternal
in interface PortableObject
out
- the PofWriter to which to write the object's state
IOException
- if an I/O error occurs
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CoherenceTM v3.3 Copyright© 2000-2007 by Oracle Corporation |
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