Package com.yahoo.searchlib.rankingexpression.rule

Class OperationNode

java.lang.Object

com.yahoo.searchlib.rankingexpression.rule.ExpressionNode

com.yahoo.searchlib.rankingexpression.rule.CompositeNode

com.yahoo.searchlib.rankingexpression.rule.OperationNode

All Implemented Interfaces:

Serializable

public final class OperationNode
extends CompositeNode

A sequence of binary operations.

Author:

bratseth

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
OperationNode(ExpressionNode leftExpression, Operator operator, ExpressionNode rightExpression)
OperationNode(List<ExpressionNode> children, List<Operator> operators)

Method Summary

Modifier and Type	Method	Description
List<ExpressionNode>	children()	Returns a read-only list containing the immediate children of this composite.
Value	evaluate(Context context)	Returns the value of evaluating this expression over the given context.
int	hashCode()	Returns a hashcode computed from the data in this
List<Operator>	operators()
static OperationNode	resolve(ExpressionNode left, Operator op, ExpressionNode right)
CompositeNode	setChildren(List<ExpressionNode> newChildren)	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

OperationNode

public OperationNode(List<ExpressionNode> children,
 List<Operator> operators)

OperationNode

public OperationNode(ExpressionNode leftExpression,
 Operator operator,
 ExpressionNode rightExpression)

Method Details

operators

public List<Operator> operators()

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.

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)

Description copied from class: ExpressionNode

Returns the value of evaluating this expression over the given context.

Specified by:

evaluate in class ExpressionNode

Parameters:

context - the variable bindings to use for this evaluation

setChildren

public CompositeNode setChildren(List<ExpressionNode> newChildren)

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

hashCode

public int hashCode()

Description copied from class: ExpressionNode

Returns a hashcode computed from the data in this

Specified by:

hashCode in class ExpressionNode

resolve

public static OperationNode resolve(ExpressionNode left,
 Operator op,
 ExpressionNode right)