Package oracle.pgx.algorithm

Interface Reduction

public interface Reduction

An atomic reduction of one or more variables (argMinMax).

Method Summary

Modifier and Type	Method	Description
<T> Reduction	andUpdate(PgxVertex vertex, VertexProperty<T> property, T value)	If the reduction in the Reduction applies, also update the property the property specified here.
<T1,T2> Reduction	andUpdate(T1 lhs, T2 rhs)	If the reduction in the Reduction applies, also update the variable specified here.
static <T> Reduction	updateMaxValue(PgxVertex vertex, VertexProperty<T> property, T value)	Create an atomic reduction of a vertex property.
static <T1,T2> Reduction	updateMaxValue(T1 lhs, T2 rhs)	Create an atomic reduction of a variable.
static <T> Reduction	updateMinValue(PgxVertex vertex, VertexProperty<T> property, T value)	Create an atomic reduction of a vertex property.
static <T1,T2> Reduction	updateMinValue(T1 lhs, T2 rhs)	Create an atomic reduction of a variable.

Method Detail

updateMinValue

static <T> Reduction updateMinValue(PgxVertex vertex,
                                    VertexProperty<T> property,
                                    T value)

Create an atomic reduction of a vertex property. If the given value is less than the current value of the node property, then update the node property to the given value.

Type Parameters:

T -

Parameters:

vertex -

property -

value -

Returns:

updateMinValue

static <T1,T2> Reduction updateMinValue(T1 lhs,
                                              T2 rhs)

Create an atomic reduction of a variable. If the value on the rhs is less than the value on the lhs, then update the value on the lhs.

Type Parameters:

T1 -

T2 -

Parameters:

lhs -

rhs -

Returns:

updateMaxValue

static <T> Reduction updateMaxValue(PgxVertex vertex,
                                    VertexProperty<T> property,
                                    T value)

Create an atomic reduction of a vertex property. If the given value is greater than the current value of the node property, then update the node property to the given value.

Type Parameters:

T -

Parameters:

vertex -

property -

value -

Returns:

updateMaxValue

static <T1,T2> Reduction updateMaxValue(T1 lhs,
                                              T2 rhs)

Create an atomic reduction of a variable. If the value on the rhs is greater than the value on the lhs, then update the value on the lhs.

Type Parameters:

T1 -

T2 -

Parameters:

lhs -

rhs -

Returns:

andUpdate

<T> Reduction andUpdate(PgxVertex vertex,
                        VertexProperty<T> property,
                        T value)

If the reduction in the Reduction applies, also update the property the property specified here.

Type Parameters:

T -

Parameters:

vertex -

property -

value -

Returns:

andUpdate

<T1,T2> Reduction andUpdate(T1 lhs,
                                  T2 rhs)

If the reduction in the Reduction applies, also update the variable specified here.

Type Parameters:

T1 -

T2 -

Parameters:

lhs -

rhs -

Returns: