Class NegativeNode
- java.lang.Object
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- com.yahoo.searchlib.rankingexpression.rule.ExpressionNode
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- com.yahoo.searchlib.rankingexpression.rule.CompositeNode
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- com.yahoo.searchlib.rankingexpression.rule.NegativeNode
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- All Implemented Interfaces:
java.io.Serializable
public class NegativeNode extends CompositeNode
A node which flips the sign of the value produced from the nested expression- Author:
- bratseth
- See Also:
- Serialized Form
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Constructor Summary
Constructors Constructor Description NegativeNode(ExpressionNode value)
Constructs a new negative node
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description java.util.List<ExpressionNode>
children()
Returns a read-only list containing the immediate children of this compositeValue
evaluate(Context context)
Returns the value of evaluating this expression over the given context.ExpressionNode
getValue()
Returns the node creating the value negated by thisNegativeNode
setChildren(java.util.List<ExpressionNode> children)
Returns a copy of this where the children is replaced by the given children.java.lang.StringBuilder
toString(java.lang.StringBuilder string, SerializationContext context, java.util.Deque<java.lang.String> path, CompositeNode parent)
Returns a script instance of this based on the supplied script functions.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, hashCode, toString
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Constructor Detail
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NegativeNode
public NegativeNode(ExpressionNode value)
Constructs a new negative node
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Method Detail
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getValue
public ExpressionNode getValue()
Returns the node creating the value negated by this
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children
public java.util.List<ExpressionNode> children()
Description copied from class:CompositeNode
Returns a read-only list containing the immediate children of this composite
- Specified by:
children
in classCompositeNode
- Returns:
- The children of this.
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toString
public java.lang.StringBuilder toString(java.lang.StringBuilder string, SerializationContext context, java.util.Deque<java.lang.String> path, CompositeNode parent)
Description copied from class:ExpressionNode
Returns a script instance of this based on the supplied script functions.- Specified by:
toString
in classExpressionNode
- Parameters:
string
- the StringBuilder that will be appended tocontext
- the serialization contextpath
- the call path to this, used for cycle detection, or null if this is a rootparent
- the parent node of this, or null if it a root- Returns:
- the main script, referring to script instances.
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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 classExpressionNode
- Parameters:
context
- the variable type bindings to use for this evaluation
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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 classExpressionNode
- Parameters:
context
- the variable bindings to use for this evaluation
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setChildren
public NegativeNode setChildren(java.util.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 classCompositeNode
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