org.apache.tajo.plan

Class LogicalPlanPreprocessor

java.lang.Object

org.apache.tajo.plan.algebra.BaseAlgebraVisitor<LogicalPlanner.PlanContext,LogicalNode>

org.apache.tajo.plan.LogicalPlanPreprocessor

All Implemented Interfaces:

AlgebraVisitor<LogicalPlanner.PlanContext,LogicalNode>

public class LogicalPlanPreprocessor
extends BaseAlgebraVisitor<LogicalPlanner.PlanContext,LogicalNode>

It finds all relations for each block and builds base schema information.

Method Summary

Methods

Modifier and Type	Method and Description
static Column[]	getColumns(LogicalPlanner.PlanContext ctx, QualifiedAsteriskExpr asteriskExpr) Get all columns of the relations correspondent to the asterisk expression.
LogicalNode	postHook(LogicalPlanner.PlanContext ctx, Stack<Expr> stack, Expr expr, LogicalNode result) The posthook is called before each expression is visited.
void	preHook(LogicalPlanner.PlanContext ctx, Stack<Expr> stack, Expr expr) The prehook is called before each expression is visited.
LogicalNode	visitAlterTable(LogicalPlanner.PlanContext ctx, Stack<Expr> stack, AlterTable expr)
LogicalNode	visitAlterTablespace(LogicalPlanner.PlanContext ctx, Stack<Expr> stack, AlterTablespace expr)
LogicalNode	visitCreateDatabase(LogicalPlanner.PlanContext ctx, Stack<Expr> stack, CreateDatabase expr)
LogicalNode	visitCreateTable(LogicalPlanner.PlanContext ctx, Stack<Expr> stack, CreateTable expr)
LogicalNode	visitDropDatabase(LogicalPlanner.PlanContext ctx, Stack<Expr> stack, DropDatabase expr)
LogicalNode	visitDropTable(LogicalPlanner.PlanContext ctx, Stack<Expr> stack, DropTable expr)
LogicalNode	visitFilter(LogicalPlanner.PlanContext ctx, Stack<Expr> stack, Selection expr)
LogicalNode	visitGroupBy(LogicalPlanner.PlanContext ctx, Stack<Expr> stack, Aggregation expr)
LogicalNode	visitHaving(LogicalPlanner.PlanContext ctx, Stack<Expr> stack, Having expr)
LogicalNode	visitInsert(LogicalPlanner.PlanContext ctx, Stack<Expr> stack, Insert expr)
LogicalNode	visitJoin(LogicalPlanner.PlanContext ctx, Stack<Expr> stack, Join expr)
LogicalNode	visitLimit(LogicalPlanner.PlanContext ctx, Stack<Expr> stack, Limit expr)
LogicalNode	visitProjection(LogicalPlanner.PlanContext ctx, Stack<Expr> stack, Projection expr)
LogicalNode	visitRelation(LogicalPlanner.PlanContext ctx, Stack<Expr> stack, Relation expr)
LogicalNode	visitSetSession(LogicalPlanner.PlanContext ctx, Stack<Expr> stack, SetSession expr)
LogicalNode	visitSort(LogicalPlanner.PlanContext ctx, Stack<Expr> stack, Sort expr)
LogicalNode	visitTableSubQuery(LogicalPlanner.PlanContext ctx, Stack<Expr> stack, TablePrimarySubQuery expr)
LogicalNode	visitTruncateTable(LogicalPlanner.PlanContext ctx, Stack<Expr> stack, TruncateTable expr)
LogicalNode	visitUnion(LogicalPlanner.PlanContext ctx, Stack<Expr> stack, SetOperation expr)

Methods inherited from class org.apache.tajo.plan.algebra.BaseAlgebraVisitor

visit, visitAnd, visitBetween, visitCaseWhen, visitCastExpr, visitColumnReference, visitConcatenate, visitCountRowsFunction, visitDataType, visitDateLiteral, visitDivide, visitEquals, visitExcept, visitExistsPredicate, visitExplain, visitFunction, visitGeneralSetFunction, visitGreaterThan, visitGreaterThanOrEquals, visitInPredicate, visitIntersect, visitIntervalLiteral, visitIsNullPredicate, visitLessThan, visitLessThanOrEquals, visitLikePredicate, visitLiteral, visitMinus, visitModular, visitMultiply, visitNot, visitNotEquals, visitNullLiteral, visitOr, visitPlus, visitQualifiedAsterisk, visitRegexpPredicate, visitRelationList, visitScalarSubQuery, visitSign, visitSimilarToPredicate, visitSimpleTableSubQuery, visitTargetExpr, visitTimeLiteral, visitTimestampLiteral, visitValueListExpr, visitWindowFunction

Methods inherited from class java.lang.Object

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

Method Detail

preHook

public void preHook(LogicalPlanner.PlanContext ctx,
           Stack<Expr> stack,
           Expr expr)
             throws PlanningException

Description copied from class: BaseAlgebraVisitor

The prehook is called before each expression is visited.

Overrides:

preHook in class BaseAlgebraVisitor<LogicalPlanner.PlanContext,LogicalNode>

Throws:

PlanningException

postHook

public LogicalNode postHook(LogicalPlanner.PlanContext ctx,
                   Stack<Expr> stack,
                   Expr expr,
                   LogicalNode result)
                     throws PlanningException

Description copied from class: BaseAlgebraVisitor

The posthook is called before each expression is visited.

Overrides:

postHook in class BaseAlgebraVisitor<LogicalPlanner.PlanContext,LogicalNode>

Throws:

PlanningException

getColumns

public static Column[] getColumns(LogicalPlanner.PlanContext ctx,
                  QualifiedAsteriskExpr asteriskExpr)
                           throws PlanningException

Get all columns of the relations correspondent to the asterisk expression.

Parameters:

ctx -

asteriskExpr -

Returns:

array of columns

Throws:

PlanningException

visitSetSession

public LogicalNode visitSetSession(LogicalPlanner.PlanContext ctx,
                          Stack<Expr> stack,
                          SetSession expr)
                            throws PlanningException

Specified by:

visitSetSession in interface AlgebraVisitor<LogicalPlanner.PlanContext,LogicalNode>

Overrides:

visitSetSession in class BaseAlgebraVisitor<LogicalPlanner.PlanContext,LogicalNode>

Throws:

PlanningException

visitProjection

public LogicalNode visitProjection(LogicalPlanner.PlanContext ctx,
                          Stack<Expr> stack,
                          Projection expr)
                            throws PlanningException

Specified by:

visitProjection in interface AlgebraVisitor<LogicalPlanner.PlanContext,LogicalNode>

Overrides:

visitProjection in class BaseAlgebraVisitor<LogicalPlanner.PlanContext,LogicalNode>

Throws:

PlanningException

visitLimit

public LogicalNode visitLimit(LogicalPlanner.PlanContext ctx,
                     Stack<Expr> stack,
                     Limit expr)
                       throws PlanningException

Specified by:

visitLimit in interface AlgebraVisitor<LogicalPlanner.PlanContext,LogicalNode>

Overrides:

visitLimit in class BaseAlgebraVisitor<LogicalPlanner.PlanContext,LogicalNode>

Throws:

PlanningException

visitSort

public LogicalNode visitSort(LogicalPlanner.PlanContext ctx,
                    Stack<Expr> stack,
                    Sort expr)
                      throws PlanningException

Specified by:

visitSort in interface AlgebraVisitor<LogicalPlanner.PlanContext,LogicalNode>

Overrides:

visitSort in class BaseAlgebraVisitor<LogicalPlanner.PlanContext,LogicalNode>

Throws:

PlanningException

visitHaving

public LogicalNode visitHaving(LogicalPlanner.PlanContext ctx,
                      Stack<Expr> stack,
                      Having expr)
                        throws PlanningException

Specified by:

visitHaving in interface AlgebraVisitor<LogicalPlanner.PlanContext,LogicalNode>

Overrides:

visitHaving in class BaseAlgebraVisitor<LogicalPlanner.PlanContext,LogicalNode>

Throws:

PlanningException

visitGroupBy

public LogicalNode visitGroupBy(LogicalPlanner.PlanContext ctx,
                       Stack<Expr> stack,
                       Aggregation expr)
                         throws PlanningException

Specified by:

visitGroupBy in interface AlgebraVisitor<LogicalPlanner.PlanContext,LogicalNode>

Overrides:

visitGroupBy in class BaseAlgebraVisitor<LogicalPlanner.PlanContext,LogicalNode>

Throws:

PlanningException

visitUnion

public LogicalNode visitUnion(LogicalPlanner.PlanContext ctx,
                     Stack<Expr> stack,
                     SetOperation expr)
                       throws PlanningException

Specified by:

visitUnion in interface AlgebraVisitor<LogicalPlanner.PlanContext,LogicalNode>

Overrides:

visitUnion in class BaseAlgebraVisitor<LogicalPlanner.PlanContext,LogicalNode>

Throws:

PlanningException

visitFilter

public LogicalNode visitFilter(LogicalPlanner.PlanContext ctx,
                      Stack<Expr> stack,
                      Selection expr)
                        throws PlanningException

Specified by:

visitFilter in interface AlgebraVisitor<LogicalPlanner.PlanContext,LogicalNode>

Overrides:

visitFilter in class BaseAlgebraVisitor<LogicalPlanner.PlanContext,LogicalNode>

Throws:

PlanningException

visitJoin

public LogicalNode visitJoin(LogicalPlanner.PlanContext ctx,
                    Stack<Expr> stack,
                    Join expr)
                      throws PlanningException

Specified by:

visitJoin in interface AlgebraVisitor<LogicalPlanner.PlanContext,LogicalNode>

Overrides:

visitJoin in class BaseAlgebraVisitor<LogicalPlanner.PlanContext,LogicalNode>

Throws:

PlanningException

visitRelation

public LogicalNode visitRelation(LogicalPlanner.PlanContext ctx,
                        Stack<Expr> stack,
                        Relation expr)
                          throws PlanningException

Specified by:

visitRelation in interface AlgebraVisitor<LogicalPlanner.PlanContext,LogicalNode>

Overrides:

visitRelation in class BaseAlgebraVisitor<LogicalPlanner.PlanContext,LogicalNode>

Throws:

PlanningException

visitTableSubQuery

public LogicalNode visitTableSubQuery(LogicalPlanner.PlanContext ctx,
                             Stack<Expr> stack,
                             TablePrimarySubQuery expr)
                               throws PlanningException

Specified by:

visitTableSubQuery in interface AlgebraVisitor<LogicalPlanner.PlanContext,LogicalNode>

Overrides:

visitTableSubQuery in class BaseAlgebraVisitor<LogicalPlanner.PlanContext,LogicalNode>

Throws:

PlanningException

visitCreateDatabase

public LogicalNode visitCreateDatabase(LogicalPlanner.PlanContext ctx,
                              Stack<Expr> stack,
                              CreateDatabase expr)
                                throws PlanningException

Specified by:

visitCreateDatabase in interface AlgebraVisitor<LogicalPlanner.PlanContext,LogicalNode>

Overrides:

visitCreateDatabase in class BaseAlgebraVisitor<LogicalPlanner.PlanContext,LogicalNode>

Throws:

PlanningException

visitDropDatabase

public LogicalNode visitDropDatabase(LogicalPlanner.PlanContext ctx,
                            Stack<Expr> stack,
                            DropDatabase expr)
                              throws PlanningException

Specified by:

visitDropDatabase in interface AlgebraVisitor<LogicalPlanner.PlanContext,LogicalNode>

Overrides:

visitDropDatabase in class BaseAlgebraVisitor<LogicalPlanner.PlanContext,LogicalNode>

Throws:

PlanningException

visitCreateTable

public LogicalNode visitCreateTable(LogicalPlanner.PlanContext ctx,
                           Stack<Expr> stack,
                           CreateTable expr)
                             throws PlanningException

Specified by:

visitCreateTable in interface AlgebraVisitor<LogicalPlanner.PlanContext,LogicalNode>

Overrides:

visitCreateTable in class BaseAlgebraVisitor<LogicalPlanner.PlanContext,LogicalNode>

Throws:

PlanningException

visitDropTable

public LogicalNode visitDropTable(LogicalPlanner.PlanContext ctx,
                         Stack<Expr> stack,
                         DropTable expr)
                           throws PlanningException

Specified by:

visitDropTable in interface AlgebraVisitor<LogicalPlanner.PlanContext,LogicalNode>

Overrides:

visitDropTable in class BaseAlgebraVisitor<LogicalPlanner.PlanContext,LogicalNode>

Throws:

PlanningException

visitAlterTablespace

public LogicalNode visitAlterTablespace(LogicalPlanner.PlanContext ctx,
                               Stack<Expr> stack,
                               AlterTablespace expr)
                                 throws PlanningException

Specified by:

visitAlterTablespace in interface AlgebraVisitor<LogicalPlanner.PlanContext,LogicalNode>

Overrides:

visitAlterTablespace in class BaseAlgebraVisitor<LogicalPlanner.PlanContext,LogicalNode>

Throws:

PlanningException

visitAlterTable

public LogicalNode visitAlterTable(LogicalPlanner.PlanContext ctx,
                          Stack<Expr> stack,
                          AlterTable expr)
                            throws PlanningException

Specified by:

visitAlterTable in interface AlgebraVisitor<LogicalPlanner.PlanContext,LogicalNode>

Overrides:

visitAlterTable in class BaseAlgebraVisitor<LogicalPlanner.PlanContext,LogicalNode>

Throws:

PlanningException

visitTruncateTable

public LogicalNode visitTruncateTable(LogicalPlanner.PlanContext ctx,
                             Stack<Expr> stack,
                             TruncateTable expr)
                               throws PlanningException

Specified by:

visitTruncateTable in interface AlgebraVisitor<LogicalPlanner.PlanContext,LogicalNode>

Overrides:

visitTruncateTable in class BaseAlgebraVisitor<LogicalPlanner.PlanContext,LogicalNode>

Throws:

PlanningException

visitInsert

public LogicalNode visitInsert(LogicalPlanner.PlanContext ctx,
                      Stack<Expr> stack,
                      Insert expr)
                        throws PlanningException

Specified by:

visitInsert in interface AlgebraVisitor<LogicalPlanner.PlanContext,LogicalNode>

Overrides:

visitInsert in class BaseAlgebraVisitor<LogicalPlanner.PlanContext,LogicalNode>

Throws:

PlanningException