org.teiid.language

Class Select

java.lang.Object

org.teiid.language.BaseLanguageObject

org.teiid.language.QueryExpression

org.teiid.language.Select

All Implemented Interfaces:

Command, InsertValueSource, LanguageObject

public class Select
extends QueryExpression

Represents a simple SELECT query.

Constructor Summary

Constructors

Constructor and Description
Select() Constructs an empty select.
Select(List<DerivedColumn> derivedColumns, boolean distinct, List<TableReference> from, Condition where, GroupBy groupBy, Condition having, OrderBy orderBy)

Method Summary

Modifier and Type	Method and Description
void	acceptVisitor(LanguageObjectVisitor visitor)
Map<String,List<? extends List<?>>>	getDependentValues() Gets the dependent value lists.
List<DerivedColumn>	getDerivedColumns()
List<TableReference>	getFrom() Get FROM clause, should never be null.
GroupBy	getGroupBy() Get GROUP BY clause, may be null.
Condition	getHaving() Get HAVING clause, may be null.
Select	getProjectedQuery()
Condition	getWhere() Get WHERE clause, may be null.
boolean	isDistinct()
void	setDependentValues(Map<String,List<? extends List<?>>> dependentValues)
void	setDerivedColumns(List<DerivedColumn> symbols)
void	setDistinct(boolean distinct)
void	setFrom(List<TableReference> from) Set FROM clause, should never be null.
void	setGroupBy(GroupBy groupBy) Set GROUP BY clause, may be null.
void	setHaving(Condition criteria) Set HAVING clause, may be null.
void	setWhere(Condition criteria) Set WHERE clause, may be null.

Methods inherited from class org.teiid.language.QueryExpression

getColumnNames, getColumnTypes, getLimit, getOrderBy, getWith, setLimit, setOrderBy, setWith

Methods inherited from class org.teiid.language.BaseLanguageObject

toString

Methods inherited from class java.lang.Object

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

Constructor Detail

Select

public Select()

Constructs an empty select. This is not valid until at least the DerivedColumns have been set.

Select

public Select(List<DerivedColumn> derivedColumns,
              boolean distinct,
              List<TableReference> from,
              Condition where,
              GroupBy groupBy,
              Condition having,
              OrderBy orderBy)

Method Detail

getDerivedColumns

public List<DerivedColumn> getDerivedColumns()

isDistinct

public boolean isDistinct()

setDerivedColumns

public void setDerivedColumns(List<DerivedColumn> symbols)

setDistinct

public void setDistinct(boolean distinct)

getFrom

public List<TableReference> getFrom()

Get FROM clause, should never be null.

Returns:

From clause object

getWhere

public Condition getWhere()

Get WHERE clause, may be null.

Returns:

A criteria object

getGroupBy

public GroupBy getGroupBy()

Get GROUP BY clause, may be null.

Returns:

A group by object

getHaving

public Condition getHaving()

Get HAVING clause, may be null.

Returns:

A criteria object

acceptVisitor

public void acceptVisitor(LanguageObjectVisitor visitor)

setFrom

public void setFrom(List<TableReference> from)

Set FROM clause, should never be null.

Parameters:

from - From clause object

setWhere

public void setWhere(Condition criteria)

Set WHERE clause, may be null.

Parameters:

criteria - A criteria object

setGroupBy

public void setGroupBy(GroupBy groupBy)

Set GROUP BY clause, may be null.

Parameters:

groupBy - A group by object

setHaving

public void setHaving(Condition criteria)

Set HAVING clause, may be null.

Parameters:

criteria - A criteria object

getProjectedQuery

public Select getProjectedQuery()

Specified by:

getProjectedQuery in class QueryExpression

getDependentValues

public Map<String,List<? extends List<?>>> getDependentValues()

Gets the dependent value lists. The lists are memory-safe. Caution should be used to not access large lists in a non-memory safe manner. The lists are invalid after returning results from the pushdown query.

Returns:

the map of dependent values or null if this is not a dependent join pushdown

setDependentValues

public void setDependentValues(Map<String,List<? extends List<?>>> dependentValues)