org.teiid.query.sql.visitor

Class ValueIteratorProviderCollectorVisitor

java.lang.Object

org.teiid.query.sql.LanguageVisitor

org.teiid.query.sql.visitor.ValueIteratorProviderCollectorVisitor

public class ValueIteratorProviderCollectorVisitor
extends LanguageVisitor

This visitor class will traverse a language object tree and collect all language objects that implement SubqueryContainer. By default it uses a java.util.ArrayList to collect the objects in the order they're found.

The easiest way to use this visitor is to call one of the static methods which create the visitor, run the visitor, and get the collection. The public visit() methods should NOT be called directly.

Constructor Summary

Constructors

Constructor and Description
ValueIteratorProviderCollectorVisitor() Construct a new visitor with the default collection type, which is a ArrayList.

Method Summary

Modifier and Type	Method and Description
List<SubqueryContainer<?>>	getValueIteratorProviders() Get the value iterator providers collected by the visitor.
static List<SubqueryContainer<?>>	getValueIteratorProviders(Collection<? extends LanguageObject> languageObjects)
static List<SubqueryContainer<?>>	getValueIteratorProviders(LanguageObject obj) Helper to quickly get the ValueIteratorProvider instances from obj
static void	getValueIteratorProviders(LanguageObject obj, List<SubqueryContainer<?>> valueIteratorProviders)
void	setCollectLateral(boolean b)
void	visit(ExistsCriteria obj) Visit a language object and collect symbols.
void	visit(ScalarSubquery obj) Visit a language object and collect symbols.
void	visit(SubqueryCompareCriteria obj) Visit a language object and collect symbols.
void	visit(SubqueryFromClause obj)
void	visit(SubquerySetCriteria obj) Visit a language object and collect symbols.

Methods inherited from class org.teiid.query.sql.LanguageVisitor

setAbort, shouldAbort, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit

Methods inherited from class java.lang.Object

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

Constructor Detail

ValueIteratorProviderCollectorVisitor

public ValueIteratorProviderCollectorVisitor()

Construct a new visitor with the default collection type, which is a ArrayList.

Method Detail

getValueIteratorProviders

public List<SubqueryContainer<?>> getValueIteratorProviders()

Get the value iterator providers collected by the visitor. This should best be called after the visitor has been run on the language object tree.

Returns:

Collection of SubqueryContainer (by default, this is a java.util.ArrayList)

visit

public void visit(SubquerySetCriteria obj)

Visit a language object and collect symbols. This method should NOT be called directly.

Overrides:

visit in class LanguageVisitor

Parameters:

obj - Language object

visit

public void visit(SubqueryCompareCriteria obj)

Visit a language object and collect symbols. This method should NOT be called directly.

Overrides:

visit in class LanguageVisitor

Parameters:

obj - Language object

visit

public void visit(ExistsCriteria obj)

Visit a language object and collect symbols. This method should NOT be called directly.

Overrides:

visit in class LanguageVisitor

Parameters:

obj - Language object

visit

public void visit(ScalarSubquery obj)

Visit a language object and collect symbols. This method should NOT be called directly.

Overrides:

visit in class LanguageVisitor

Parameters:

obj - Language object

visit

public void visit(SubqueryFromClause obj)

Overrides:

visit in class LanguageVisitor

getValueIteratorProviders

public static final List<SubqueryContainer<?>> getValueIteratorProviders(LanguageObject obj)

Helper to quickly get the ValueIteratorProvider instances from obj

Parameters:

obj - Language object

Returns:

java.util.ArrayList of found ValueIteratorProvider

getValueIteratorProviders

public static final void getValueIteratorProviders(LanguageObject obj,
                                                   List<SubqueryContainer<?>> valueIteratorProviders)

getValueIteratorProviders

public static final List<SubqueryContainer<?>> getValueIteratorProviders(Collection<? extends LanguageObject> languageObjects)

setCollectLateral

public void setCollectLateral(boolean b)