Package com.yahoo.searchlib.expression

Class ConstantNode

java.lang.Object

com.yahoo.vespa.objects.Selectable

com.yahoo.vespa.objects.Identifiable

com.yahoo.searchlib.expression.ExpressionNode

com.yahoo.searchlib.expression.ConstantNode

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable

public class ConstantNode
extends ExpressionNode

This abstract expression node represents a function to execute.

Author:

baldersheim, Simon Thoresen Hult

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
static int	classId

Constructor Summary

Constructors

Constructor	Description
ConstantNode()
ConstantNode(ResultNode value)

Method Summary

Modifier and Type	Method	Description
ConstantNode	clone()
protected boolean	equalsExpression(ExpressionNode obj)
ResultNode	getResult()	Get the result of this expression.
ResultNode	getValue()
protected void	onDeserialize(com.yahoo.vespa.objects.Deserializer buf)
protected boolean	onExecute()
protected int	onGetClassId()
protected void	onPrepare()
protected void	onSerialize(com.yahoo.vespa.objects.Serializer buf)
void	visitMembers(com.yahoo.vespa.objects.ObjectVisitor visitor)

Methods inherited from class com.yahoo.searchlib.expression.ExpressionNode

equals, execute, executeIterative, onArgument, prepare

Methods inherited from class com.yahoo.vespa.objects.Identifiable

create, createFromId, deserialize, deserializeOptional, deserializeWithId, equals, getClassId, getUtf8, hashCode, putUtf8, registerClass, serialize, serializeOptional, serializeWithId, toString

Methods inherited from class com.yahoo.vespa.objects.Selectable

select, select, selectMembers

Methods inherited from class java.lang.Object

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

Field Detail

classId

public static final int classId

Constructor Detail

ConstantNode

public ConstantNode()

ConstantNode

public ConstantNode(ResultNode value)

Method Detail

getValue

public ResultNode getValue()

onGetClassId

protected int onGetClassId()

Overrides:

onGetClassId in class ExpressionNode

onSerialize

protected void onSerialize(com.yahoo.vespa.objects.Serializer buf)

Overrides:

onSerialize in class ExpressionNode

onDeserialize

protected void onDeserialize(com.yahoo.vespa.objects.Deserializer buf)

Overrides:

onDeserialize in class ExpressionNode

clone

public ConstantNode clone()

Overrides:

clone in class ExpressionNode

visitMembers

public void visitMembers(com.yahoo.vespa.objects.ObjectVisitor visitor)

Overrides:

visitMembers in class ExpressionNode

onPrepare

protected void onPrepare()

Overrides:

onPrepare in class ExpressionNode

onExecute

protected boolean onExecute()

Overrides:

onExecute in class ExpressionNode

getResult

public ResultNode getResult()

Description copied from class: ExpressionNode

Get the result of this expression.

Specified by:

getResult in class ExpressionNode

Returns:

the result as a ResultNode.

equalsExpression

protected boolean equalsExpression(ExpressionNode obj)

Specified by:

equalsExpression in class ExpressionNode