Package com.yahoo.searchlib.rankingexpression.rule

Class LambdaFunctionNode

java.lang.Object

com.yahoo.searchlib.rankingexpression.rule.ExpressionNode

com.yahoo.searchlib.rankingexpression.rule.CompositeNode

com.yahoo.searchlib.rankingexpression.rule.LambdaFunctionNode

All Implemented Interfaces:

Serializable

public class LambdaFunctionNode
extends CompositeNode

A free, parametrized function

Author:

bratseth

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
LambdaFunctionNode(List<String> arguments, ExpressionNode functionExpression)

Method Summary

Modifier and Type	Method	Description
DoubleBinaryOperator	asDoubleBinaryOperator()	Returns this as a double binary operator
DoubleUnaryOperator	asDoubleUnaryOperator()	Returns this as a double unary operator
List<ExpressionNode>	children()	Returns a read-only list containing the immediate children of this composite.
Value	evaluate(Context context)	Evaluate this in a context which must have the arguments bound
int	hashCode()	Returns a hashcode computed from the data in this
CompositeNode	setChildren(List<ExpressionNode> children)	Returns a copy of this where the children is replaced by the given children.
StringBuilder	toString(StringBuilder string, SerializationContext context, Deque<String> path, CompositeNode parent)	Returns this in serialized form.
com.yahoo.tensor.TensorType	type(com.yahoo.tensor.evaluation.TypeContext<Reference> context)	Returns the type this will return if evaluated with the given context.

Methods inherited from class com.yahoo.searchlib.rankingexpression.rule.ExpressionNode

equals, toString, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Details

LambdaFunctionNode

public LambdaFunctionNode(List<String> arguments,
 ExpressionNode functionExpression)

Method Details

children

public List<ExpressionNode> children()

Description copied from class: CompositeNode

Returns a read-only list containing the immediate children of this composite.

Specified by:

children in class CompositeNode

Returns:

The children of this.

setChildren

public CompositeNode setChildren(List<ExpressionNode> children)

Description copied from class: CompositeNode

Returns a copy of this where the children is replaced by the given children.

Specified by:

setChildren in class CompositeNode

toString

public StringBuilder toString(StringBuilder string,
 SerializationContext context,
 Deque<String> path,
 CompositeNode parent)

Description copied from class: ExpressionNode

Returns this in serialized form.

Specified by:

toString in class ExpressionNode

Parameters:

string - the StringBuilder that will be appended to

context - the serialization context

path - the call path to this, used for cycle detection, or null if this is a root

parent - the parent node of this, or null if it is a root

Returns:

the main script, referring to script instances.

type

public com.yahoo.tensor.TensorType type(com.yahoo.tensor.evaluation.TypeContext<Reference> context)

Description copied from class: ExpressionNode

Returns the type this will return if evaluated with the given context.

Specified by:

type in class ExpressionNode

Parameters:

context - the variable type bindings to use for this evaluation

evaluate

public Value evaluate(Context context)

Evaluate this in a context which must have the arguments bound

Specified by:

evaluate in class ExpressionNode

Parameters:

context - the variable bindings to use for this evaluation

asDoubleUnaryOperator

public DoubleUnaryOperator asDoubleUnaryOperator()

Returns this as a double unary operator

Throws:

IllegalStateException - if this has more than one argument

asDoubleBinaryOperator

public DoubleBinaryOperator asDoubleBinaryOperator()

Returns this as a double binary operator

Throws:

IllegalStateException - if this has more than two arguments

hashCode

public int hashCode()

Description copied from class: ExpressionNode

Returns a hashcode computed from the data in this

Specified by:

hashCode in class ExpressionNode