EclipseLink Core 4.0.2 · org.eclipse.persistence.internal.helper.MappingCompare

public Class MappingCompare

INTERNAL: Use to Sort The mappings in ClassDescriptor, Mappings are either DirectToField, which must be at the top or other Avoid using this class as sun.misc is not part of many VM's like Netscapes.

Field Summary

Modifier and Type	Field and Description
private static final long	serialVersionUID

Constructor Summary

Access	Constructor and Description
public	MappingCompare()

Method Summary

Modifier and Type	Method and Description
public int	compare(DatabaseMapping the first object to be compared. arg1, DatabaseMapping the second object to be compared. arg2) Implements java.util.Comparator.compare. Compares its two arguments for order.

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

Field Detail

serialVersionUID	back to summary
private static final long serialVersionUID

Constructor Detail

MappingCompare	back to summary
public MappingCompare()

Method Detail

compare back to summary

compare	back to summary
public int compare(DatabaseMapping arg1, DatabaseMapping arg2) Implements java.util.Comparator.compare. Doc from java.util.Comparator.compare. Compares its two arguments for order. Returns a negative integer, zero, or a positive integer as the first argument is less than, equal to, or greater than the second. The implementor must ensure that `signum(compare(x, y)) == -signum(compare(y, x))` for all `x` and `y`. (This implies that `compare(x, y)` must throw an exception if and only if `compare(y, x)` throws an exception.) The implementor must also ensure that the relation is transitive: `((compare(x, y)>0) && (compare(y, z)>0))` implies `compare(x, z)>0`. Finally, the implementor must ensure that `compare(x, y)==0` implies that `signum(compare(x, z))==signum(compare(y, z))` for all `z`. Parameters arg1:DatabaseMapping the first object to be compared. arg2:DatabaseMapping the second object to be compared. Returns:int a negative integer, zero, or a positive integer as the first argument is less than, equal to, or greater than the second. Annotations @Override

public int compare(DatabaseMapping arg1, DatabaseMapping arg2)

Implements java.util.Comparator.compare.

Doc from java.util.Comparator.compare.

Compares its two arguments for order. Returns a negative integer, zero, or a positive integer as the first argument is less than, equal to, or greater than the second.

The implementor must ensure that signum(compare(x, y)) == -signum(compare(y, x)) for all x and y. (This implies that compare(x, y) must throw an exception if and only if compare(y, x) throws an exception.)

The implementor must also ensure that the relation is transitive: ((compare(x, y)>0) && (compare(y, z)>0)) implies compare(x, z)>0.

Finally, the implementor must ensure that compare(x, y)==0 implies that signum(compare(x, z))==signum(compare(y, z)) for all z.

Parameters

arg1:DatabaseMapping: the first object to be compared.
arg2:DatabaseMapping: the second object to be compared.

Returns:int

a negative integer, zero, or a positive integer as the first argument is less than, equal to, or greater than the second.

Annotations

@Override