Package com.yahoo.searchlib.expression

Class AttributeMapLookupNode

java.lang.Object

com.yahoo.vespa.objects.Selectable

com.yahoo.vespa.objects.Identifiable

com.yahoo.searchlib.expression.ExpressionNode

com.yahoo.searchlib.expression.FunctionNode

com.yahoo.searchlib.expression.AttributeNode

com.yahoo.searchlib.expression.AttributeMapLookupNode

All Implemented Interfaces:

Serializable, Cloneable

public class AttributeMapLookupNode
extends AttributeNode

This function is an instruction to do a lookup in a map attribute, returning the value. The key is either specified explicitly or found via a key source attribute. Two underlying attributes are used to represent the map attribute (the key and value attributes).

Author:

geirst

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
static final int	classId

Constructor Summary

Constructors

Constructor	Description
AttributeMapLookupNode()

Method Summary

Modifier and Type	Method	Description
protected boolean	equalsFunction(FunctionNode obj)
static AttributeMapLookupNode	fromKey(String attributeExpression, String keyAttribute, String valueAttribute, String key)
static AttributeMapLookupNode	fromKeySourceAttribute(String attributeExpression, String keyAttribute, String valueAttribute, String keySourceAttribute)
int	hashCode()
protected void	onDeserialize(com.yahoo.vespa.objects.Deserializer buf)
protected int	onGetClassId()
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.AttributeNode

getAttributeName, setAttributeName

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

clone, equalsExpression, getResult, setResult

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

equals, execute, executeIterative, onArgument, onExecute, onPrepare, prepare

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

create, createFromId, deserialize, deserializeOptional, deserializeWithId, equals, getClassId, getRawUtf8Bytes, getUtf8, 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 Details

classId

public static final int classId

Constructor Details

AttributeMapLookupNode

public AttributeMapLookupNode()

Method Details

fromKey

public static AttributeMapLookupNode fromKey(String attributeExpression,
 String keyAttribute,
 String valueAttribute,
 String key)

fromKeySourceAttribute

public static AttributeMapLookupNode fromKeySourceAttribute(String attributeExpression,
 String keyAttribute,
 String valueAttribute,
 String keySourceAttribute)

onGetClassId

protected int onGetClassId()

Overrides:

onGetClassId in class AttributeNode

onSerialize

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

Overrides:

onSerialize in class AttributeNode

onDeserialize

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

Overrides:

onDeserialize in class AttributeNode

hashCode

public int hashCode()

Overrides:

hashCode in class AttributeNode

equalsFunction

protected boolean equalsFunction(FunctionNode obj)

Overrides:

equalsFunction in class AttributeNode

visitMembers

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

Overrides:

visitMembers in class AttributeNode