public class ExtractorComparator<T> extends Object implements Comparator<T>, ExternalizableLite, PortableObject
ValueExtractor
to extract value(s) to be used for comparison.Constructor and Description |
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ExtractorComparator()
Default constructor (for PortableObject).
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ExtractorComparator(ValueExtractor<? super T,? extends E> extractor)
Construct a ExtractorComparator with the specified extractor.
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Modifier and Type | Method and Description |
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int |
compare(T o1, T o2)
Compares extracted values (by specified ValueExtractor) of given arguments for order.
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void |
readExternal(DataInput in)
Restore the contents of this object by loading the object's state from the passed DataInput object.
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void |
readExternal(PofReader in)
Restore the contents of a user type instance by reading its state using the specified PofReader object.
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void |
writeExternal(DataOutput out)
Save the contents of this object by storing the object's state into the passed DataOutput object.
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void |
writeExternal(PofWriter out)
Save the contents of a POF user type instance by writing its state using the specified PofWriter object.
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
comparing, comparing, comparingDouble, comparingInt, comparingLong, equals, naturalOrder, nullsFirst, nullsLast, reversed, reverseOrder, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong
public ExtractorComparator()
public ExtractorComparator(ValueExtractor<? super T,? extends E> extractor)
extractor
- the ValueExtractor to use by this filterpublic int compare(T o1, T o2)
compare
in interface Comparator<T>
o1
- the first object to be comparedo2
- the second object to be comparedClassCastException
- if the arguments' types prevent them from being compared by this Comparator.public void readExternal(DataInput in) throws IOException
ExternalizableLite
readExternal
in interface ExternalizableLite
in
- the DataInput stream to read data from in order to restore the state of this objectIOException
- if an I/O exception occursNotActiveException
- if the object is not in its initial state, and therefore cannot be deserialized intopublic void writeExternal(DataOutput out) throws IOException
ExternalizableLite
writeExternal
in interface ExternalizableLite
out
- the DataOutput stream to write the state of this object toIOException
- if an I/O exception occurspublic void readExternal(PofReader in) throws IOException
PortableObject
readExternal
in interface PortableObject
in
- the PofReader from which to read the object's stateIOException
- if an I/O error occurspublic void writeExternal(PofWriter out) throws IOException
PortableObject
writeExternal
in interface PortableObject
out
- the PofWriter to which to write the object's stateIOException
- if an I/O error occurs