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Eclipse Platform
Release 3.0

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org.eclipse.jface.viewers
Interface IElementComparer

public interface IElementComparer

This interface is used to compare elements in a viewer for equality, and to provide the hash code for an element. This allows the client of the viewer to specify different equality criteria and a different hash code implementation than the equals and hashCode implementations of the elements themselves.

See Also:

StructuredViewer.setComparer(org.eclipse.jface.viewers.IElementComparer)

Method Summary

boolean	equals(Object a, Object b) Compares two elements for equality
int	hashCode(Object element) Returns the hash code for the given element.

Method Detail

equals

public boolean equals(Object a,
                      Object b)

Compares two elements for equality

Parameters:

a - the first element

b - the second element

Returns:

whether a is equal to b

hashCode

public int hashCode(Object element)

Returns the hash code for the given element.

Returns:

the hash code for the given element