org.teiid.query.sql.lang

Class UnaryFromClause

java.lang.Object

org.teiid.query.sql.lang.FromClause

org.teiid.query.sql.lang.UnaryFromClause

All Implemented Interfaces:

Cloneable, LanguageObject

public class UnaryFromClause
extends FromClause

A FROM subpart that represents a single group. For example, the FROM clause: "FROM a, b" will have two UnaryFromClause objects, each holding a reference to a GroupSymbol (for a and b).

Nested Class Summary

Nested classes/interfaces inherited from interface org.teiid.query.sql.LanguageObject

LanguageObject.Util

Field Summary

Fields inherited from class org.teiid.query.sql.lang.FromClause

PRESERVE

Constructor Summary

Constructors

Constructor and Description
UnaryFromClause() Construct default object
UnaryFromClause(GroupSymbol group) Construct object with specified group

Method Summary

Modifier and Type	Method and Description
void	acceptVisitor(LanguageVisitor visitor) Method for accepting a visitor.
FromClause	cloneDirect() Get deep clone of object
void	collectGroups(Collection<GroupSymbol> groups) Collect all GroupSymbols for this from clause.
boolean	equals(Object obj) Check whether objects are equal
Command	getExpandedCommand()
GroupSymbol	getGroup() Get group held by clause
int	hashCode() Get hash code of object
void	setExpandedCommand(Command expandedCommand)
void	setGroup(GroupSymbol group) Set the group held by the clause

Methods inherited from class org.teiid.query.sql.lang.FromClause

clone, getMakeDep, getMakeInd, hasHint, isMakeDep, isMakeNotDep, isNoUnnest, isOptional, isPreserve, setMakeDep, setMakeDep, setMakeInd, setMakeNotDep, setNoUnnest, setOptional, setPreserve, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

UnaryFromClause

public UnaryFromClause()

Construct default object

UnaryFromClause

public UnaryFromClause(GroupSymbol group)

Construct object with specified group

Parameters:

group - Group being held

Method Detail

setGroup

public void setGroup(GroupSymbol group)

Set the group held by the clause

Parameters:

group - Group to hold

getGroup

public GroupSymbol getGroup()

Get group held by clause

Returns:

Group held by clause

collectGroups

public void collectGroups(Collection<GroupSymbol> groups)

Collect all GroupSymbols for this from clause.

Specified by:

collectGroups in class FromClause

Parameters:

groups - Groups to add to

acceptVisitor

public void acceptVisitor(LanguageVisitor visitor)

Description copied from interface: LanguageObject

Method for accepting a visitor. It is the responsibility of the language object to call back on the visitor.

Specified by:

acceptVisitor in interface LanguageObject

Specified by:

acceptVisitor in class FromClause

Parameters:

visitor - Visitor being used

equals

public boolean equals(Object obj)

Check whether objects are equal

Overrides:

equals in class FromClause

Parameters:

obj - Other object

Returns:

True if equal

hashCode

public int hashCode()

Get hash code of object

Overrides:

hashCode in class Object

Returns:

Hash code

cloneDirect

public FromClause cloneDirect()

Get deep clone of object

Specified by:

cloneDirect in class FromClause

Returns:

Deep copy of the object

getExpandedCommand

public Command getExpandedCommand()

Returns:

Returns the expandedCommand.

setExpandedCommand

public void setExpandedCommand(Command expandedCommand)

Parameters:

expandedCommand - The expandedCommand to set.