org.apache.tajo.plan

Class LogicalPlan.QueryBlock

java.lang.Object

org.apache.tajo.plan.LogicalPlan.QueryBlock

Enclosing class:

LogicalPlan

public class LogicalPlan.QueryBlock
extends Object

Constructor Summary

Constructors

Constructor and Description
LogicalPlan.QueryBlock(String blockName)

Method Summary

Methods

Modifier and Type	Method and Description
void	addColumnAlias(String original, String alias)
void	addConstReference(String refName, Expr expr, ConstEval value)
void	addJoinType(JoinType joinType)
void	addPlanHistory(String history)
void	addRelation(RelationNode relation)
boolean	containsJoinType(JoinType joinType)
boolean	existsRelation(String name)
<T extends Expr> List<T>	getAlgebraicExpr(OpType opType)
ConstEval	getConstByReference(String refName)
String	getConstReference(Expr expr)
<T extends LogicalNode> T	getCurrentNode()
<T extends LogicalNode> T	getLatestNode()
String	getName()
NamedExprsManager	getNamedExprsManager()
<T extends LogicalNode> T	getNode(NodeType nodeType)
<T extends LogicalNode> T	getNodeFromExpr(Expr expr)
String	getOriginalName(String alias)
List<String>	getPlanHistory()
Target[]	getRawTargets()
RelationNode	getRelation(String name)
Collection<RelationNode>	getRelations()
<NODE extends LogicalNode> NODE	getRoot()
NodeType	getRootType()
Schema	getSchema()
<T extends Expr> T	getSingletonExpr(OpType opType)
boolean	hasAlgebraicExpr(OpType opType)
boolean	hasNode(NodeType nodeType)
boolean	hasTableExpression()
boolean	hasWindowSpecs()
boolean	isAggregationRequired() This flag can be changed as a plan is generated.
boolean	isAliasedName(String alias)
boolean	isAlreadyRenamedTableName(String name)
boolean	isConstReference(String refName)
boolean	isRegisteredConst(Expr expr)
void	refresh()
void	registerExprWithNode(Expr expr, LogicalNode node)
void	registerNode(LogicalNode node)
void	setAggregationRequire()
void	setAlgebraicExpr(Expr expr)
void	setHasWindowFunction()
void	setRawTargets(Target[] rawTargets)
void	setRoot(LogicalNode blockRoot)
void	setSchema(Schema schema)
String	toString()
void	unregisterNode(LogicalNode node)
void	unsetAggregationRequire() Unset aggregation required flag.
void	updateCurrentNode(Expr expr)
void	updateLatestNode(LogicalNode node)

Methods inherited from class java.lang.Object

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

Constructor Detail

LogicalPlan.QueryBlock

public LogicalPlan.QueryBlock(String blockName)

Method Detail

getName

public String getName()

refresh

public void refresh()

setRoot

public void setRoot(LogicalNode blockRoot)

getRoot

public <NODE extends LogicalNode> NODE getRoot()

getRootType

public NodeType getRootType()

getRawTargets

public Target[] getRawTargets()

setRawTargets

public void setRawTargets(Target[] rawTargets)

existsRelation

public boolean existsRelation(String name)

isAlreadyRenamedTableName

public boolean isAlreadyRenamedTableName(String name)

getRelation

public RelationNode getRelation(String name)

addRelation

public void addRelation(RelationNode relation)

getRelations

public Collection<RelationNode> getRelations()

hasTableExpression

public boolean hasTableExpression()

addConstReference

public void addConstReference(String refName,
                     Expr expr,
                     ConstEval value)

isConstReference

public boolean isConstReference(String refName)

isRegisteredConst

public boolean isRegisteredConst(Expr expr)

getConstReference

public String getConstReference(Expr expr)

getConstByReference

public ConstEval getConstByReference(String refName)

addColumnAlias

public void addColumnAlias(String original,
                  String alias)

isAliasedName

public boolean isAliasedName(String alias)

getOriginalName

public String getOriginalName(String alias)

setSchema

public void setSchema(Schema schema)

getSchema

public Schema getSchema()

getNamedExprsManager

public NamedExprsManager getNamedExprsManager()

updateCurrentNode

public void updateCurrentNode(Expr expr)
                       throws PlanningException

Throws:

PlanningException

getCurrentNode

public <T extends LogicalNode> T getCurrentNode()

updateLatestNode

public void updateLatestNode(LogicalNode node)

getLatestNode

public <T extends LogicalNode> T getLatestNode()

setAlgebraicExpr

public void setAlgebraicExpr(Expr expr)

hasAlgebraicExpr

public boolean hasAlgebraicExpr(OpType opType)

getAlgebraicExpr

public <T extends Expr> List<T> getAlgebraicExpr(OpType opType)

getSingletonExpr

public <T extends Expr> T getSingletonExpr(OpType opType)

hasNode

public boolean hasNode(NodeType nodeType)

registerNode

public void registerNode(LogicalNode node)

unregisterNode

public void unregisterNode(LogicalNode node)

getNode

public <T extends LogicalNode> T getNode(NodeType nodeType)

registerExprWithNode

public void registerExprWithNode(Expr expr,
                        LogicalNode node)

getNodeFromExpr

public <T extends LogicalNode> T getNodeFromExpr(Expr expr)

setHasWindowFunction

public void setHasWindowFunction()

hasWindowSpecs

public boolean hasWindowSpecs()

isAggregationRequired

public boolean isAggregationRequired()

This flag can be changed as a plan is generated. True value means that this query should have aggregation phase. If aggregation plan is added to this block, it becomes false because it doesn't need aggregation phase anymore. It is usually used to add aggregation phase from SELECT statement without group-by clause.

Returns:

True if aggregation is needed but this query hasn't had aggregation phase.

unsetAggregationRequire

public void unsetAggregationRequire()

Unset aggregation required flag. It has to be called after an aggregation phase is added to this block.

setAggregationRequire

public void setAggregationRequire()

containsJoinType

public boolean containsJoinType(JoinType joinType)

addJoinType

public void addJoinType(JoinType joinType)

getPlanHistory

public List<String> getPlanHistory()

addPlanHistory

public void addPlanHistory(String history)

toString

public String toString()

Overrides:

toString in class Object