Apache Commons Collections 4.4 · org.apache.commons.collections4.comparators.TransformingComparator

Modifier and Type	Field and Description
private final Comparator<O>	decorated The decorated comparator.
private static final long	serialVersionUID Serialization version from Collections 4.0.
private final Transformer<? super I, ? extends O>	transformer The transformer being used.

Constructor Summary

Access	Constructor and Description
public	TransformingComparator(final Transformer<? super I, ? extends O> what will transform the arguments to `compare` transformer) Constructs an instance with the given Transformer and a `ComparableComparator`.
public	TransformingComparator(final Transformer<? super I, ? extends O> what will transform the arguments to `compare` transformer, final Comparator<O> the decorated Comparator decorated) Constructs an instance with the given Transformer and Comparator.

Method Summary

Modifier and Type	Method and Description
public int	Returns: negative if obj1 is less, positive if greater, zero if equal compare(final I the first object to transform then compare obj1, final I the second object to transform then compare obj2) Implements java.util.Comparator.compare. Returns the result of comparing the values from the transform operation.
public boolean	Returns: true if equal equals(final Object the object to compare to object) Overrides java.lang.Object.equals. Implements java.util.Comparator.equals. Returns `true` iff that Object is is a `Comparator` whose ordering is known to be equivalent to mine.
public int	Returns: a hash code for this comparator. hashCode() Overrides java.lang.Object.hashCode. Implement a hash code for this comparator that is consistent with `equals`.

Inherited from java.lang.Object:: clone finalize getClass notify notifyAll toString wait wait wait

Field Detail

decorated	back to summary
private final Comparator<O> decorated The decorated comparator.

serialVersionUID	back to summary
private static final long serialVersionUID Serialization version from Collections 4.0.

transformer	back to summary
private final Transformer<? super I, ? extends O> transformer The transformer being used.

Constructor Detail

TransformingComparator back to summary

TransformingComparator	back to summary
public TransformingComparator(final Transformer<? super I, ? extends O> transformer) Constructs an instance with the given Transformer and a `ComparableComparator`. Parameters transformer:Transformer<? super I, ? extends O> what will transform the arguments to `compare`

public TransformingComparator(final Transformer<? super I, ? extends O> transformer)

Constructs an instance with the given Transformer and a ComparableComparator.

Parameters

transformer:Transformer<? super I, ? extends O>: what will transform the arguments to compare

TransformingComparator back to summary

TransformingComparator	back to summary
public TransformingComparator(final Transformer<? super I, ? extends O> transformer, final Comparator<O> decorated) Constructs an instance with the given Transformer and Comparator. Parameters transformer:Transformer<? super I, ? extends O> what will transform the arguments to `compare` decorated:Comparator<O> the decorated Comparator

public TransformingComparator(final Transformer<? super I, ? extends O> transformer, final Comparator<O> decorated)

Constructs an instance with the given Transformer and Comparator.

Parameters

transformer:Transformer<? super I, ? extends O>: what will transform the arguments to compare
decorated:Comparator<O>: the decorated Comparator

Method Detail

compare	back to summary
public int compare(final I obj1, final I obj2) Implements java.util.Comparator.compare. Returns the result of comparing the values from the transform operation. Parameters obj1:I the first object to transform then compare obj2:I the second object to transform then compare Returns:int negative if obj1 is less, positive if greater, zero if equal Annotations @Override

compare

back to summary

public int compare(final I obj1, final I obj2)

Implements java.util.Comparator.compare.

Returns the result of comparing the values from the transform operation.

Parameters

obj1:I: the first object to transform then compare
obj2:I: the second object to transform then compare

Returns:int

negative if obj1 is less, positive if greater, zero if equal

Annotations

@Override

equals back to summary

equals	back to summary
public boolean equals(final Object object) Overrides java.lang.Object.equals. Implements java.util.Comparator.equals. Returns `true` iff that Object is is a `Comparator` whose ordering is known to be equivalent to mine. This implementation returns `true` iff `that` is a `TransformingComparator` whose attributes are equal to mine. Parameters object:Object the object to compare to Returns:boolean true if equal Annotations @Override

public boolean equals(final Object object)

Overrides java.lang.Object.equals.

Implements java.util.Comparator.equals.

Returns true iff that Object is is a Comparator whose ordering is known to be equivalent to mine.

This implementation returns true iff that is a TransformingComparator whose attributes are equal to mine.

Parameters

object:Object: the object to compare to

Returns:boolean

true if equal

Annotations

@Override

hashCode back to summary

hashCode	back to summary
public int hashCode() Overrides java.lang.Object.hashCode. Implement a hash code for this comparator that is consistent with `equals`. Returns:int a hash code for this comparator. Annotations @Override

public int hashCode()

Overrides java.lang.Object.hashCode.

Implement a hash code for this comparator that is consistent with equals.

Returns:int

a hash code for this comparator.

Annotations

@Override

public Class TransformingComparator<I, O>

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail