Package it.unimi.di.big.mg4j.query.nodes

Class MultiIndexTermExpander.ExpanderVisitor

java.lang.Object

it.unimi.di.big.mg4j.query.nodes.AbstractQueryBuilderVisitor<Query>

it.unimi.di.big.mg4j.query.nodes.AbstractTermExpander.ExpanderVisitor

it.unimi.di.big.mg4j.query.nodes.MultiIndexTermExpander.ExpanderVisitor

All Implemented Interfaces:

QueryBuilderVisitor<Query>, FlyweightPrototype<QueryBuilderVisitor<Query>>

Enclosing class:

MultiIndexTermExpander

protected class MultiIndexTermExpander.ExpanderVisitor
extends AbstractTermExpander.ExpanderVisitor

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	ExpanderVisitor()

Method Summary

Modifier and Type	Method	Description
MultiIndexTermExpander.ExpanderVisitor	copy()
Query	visitPost(Consecutive node, Query[] subNode)	Visits a Consecutive node after recursing into the corresponding subtree.
Query	visitPost(OrderedAnd node, Query[] subNode)	Visits an OrderedAnd node after recursing into the corresponding subtree.
boolean	visitPre(Consecutive node)	Visits a Consecutive node before recursing into the corresponding subtree.
boolean	visitPre(OrderedAnd node)	Visits an OrderedAnd node before recursing into the corresponding subtree.

Methods inherited from class it.unimi.di.big.mg4j.query.nodes.AbstractTermExpander.ExpanderVisitor

newArray, prepare, visit, visit, visit, visit, visit, visitPost, visitPost, visitPost, visitPost, visitPost, visitPost, visitPost, visitPost, visitPost, visitPost, visitPost, visitPost, visitPost

Methods inherited from class it.unimi.di.big.mg4j.query.nodes.AbstractQueryBuilderVisitor

visitPre, visitPre, visitPre, visitPre, visitPre, visitPre, visitPre, visitPre, visitPre, visitPre, visitPre, visitPre, visitPre

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ExpanderVisitor

protected ExpanderVisitor()

Method Detail

copy

public MultiIndexTermExpander.ExpanderVisitor copy()

Specified by:

copy in interface FlyweightPrototype<QueryBuilderVisitor<Query>>

Specified by:

copy in interface QueryBuilderVisitor<Query>

Overrides:

copy in class AbstractTermExpander.ExpanderVisitor

visitPre

public boolean visitPre(Consecutive node)

Description copied from interface: QueryBuilderVisitor

Visits a Consecutive node before recursing into the corresponding subtree.

Specified by:

visitPre in interface QueryBuilderVisitor<Query>

Overrides:

visitPre in class AbstractQueryBuilderVisitor<Query>

Parameters:

node - the node to be visited.

Returns:

true if the visit should continue.

visitPost

public Query visitPost(Consecutive node,
                       Query[] subNode)
                throws QueryBuilderVisitorException

Description copied from interface: QueryBuilderVisitor

Visits a Consecutive node after recursing into the corresponding subtree.

Specified by:

visitPost in interface QueryBuilderVisitor<Query>

Overrides:

visitPost in class AbstractTermExpander.ExpanderVisitor

Parameters:

node - the internal node to be visited.

subNode - the array of results returned by subnodes.

Returns:

an appropriate return value (usually, the object built using the elements in subNodeResult) if the visit should continue, or null.

Throws:

QueryBuilderVisitorException

visitPre

public boolean visitPre(OrderedAnd node)

Description copied from interface: QueryBuilderVisitor

Visits an OrderedAnd node before recursing into the corresponding subtree.

Specified by:

visitPre in interface QueryBuilderVisitor<Query>

Overrides:

visitPre in class AbstractQueryBuilderVisitor<Query>

Parameters:

node - the node to be visited.

Returns:

true if the visit should continue.

visitPost

public Query visitPost(OrderedAnd node,
                       Query[] subNode)
                throws QueryBuilderVisitorException

Description copied from interface: QueryBuilderVisitor

Visits an OrderedAnd node after recursing into the corresponding subtree.

Specified by:

visitPost in interface QueryBuilderVisitor<Query>

Overrides:

visitPost in class AbstractTermExpander.ExpanderVisitor

Parameters:

node - the internal node to be visited.

subNode - the array of results returned by subnodes.

Returns:

an appropriate return value (usually, the object built using the elements in subNodeResult) if the visit should continue, or null.

Throws:

QueryBuilderVisitorException