Package com.arcadedb.query.sql.executor

Class SelectExecutionPlanner

java.lang.Object

com.arcadedb.query.sql.executor.SelectExecutionPlanner

public class SelectExecutionPlanner
extends Object

Author:

Luigi Dell'Aquila (luigi.dellaquila-(at)-gmail.com)

Constructor Summary

Constructors

Constructor	Description
SelectExecutionPlanner(SelectStatement oSelectStatement)

Method Summary

Modifier and Type	Method	Description
InternalExecutionPlan	createExecutionPlan(CommandContext ctx, boolean enableProfiling)
static void	handleOrderBy(SelectExecutionPlan plan, QueryPlanningInfo info, CommandContext ctx, boolean profilingEnabled)
static void	handleProjectionsBlock(SelectExecutionPlan result, QueryPlanningInfo info, CommandContext ctx, boolean enableProfiling)
static void	handleUnwind(SelectExecutionPlan result, QueryPlanningInfo info, CommandContext ctx, boolean profilingEnabled)
protected static void	optimizeQuery(QueryPlanningInfo info)
protected static Projection	translateDistinct(Projection projection)	for backward compatibility, translate "distinct(foo)" to "DISTINCT foo".

Methods inherited from class java.lang.Object

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

Constructor Detail

SelectExecutionPlanner

public SelectExecutionPlanner(SelectStatement oSelectStatement)

Method Detail

createExecutionPlan

public InternalExecutionPlan createExecutionPlan(CommandContext ctx,
                                                 boolean enableProfiling)

handleProjectionsBlock

public static void handleProjectionsBlock(SelectExecutionPlan result,
                                          QueryPlanningInfo info,
                                          CommandContext ctx,
                                          boolean enableProfiling)

translateDistinct

protected static Projection translateDistinct(Projection projection)

for backward compatibility, translate "distinct(foo)" to "DISTINCT foo". This method modifies the projection itself.

Parameters:

projection - the projection

handleUnwind

public static void handleUnwind(SelectExecutionPlan result,
                                QueryPlanningInfo info,
                                CommandContext ctx,
                                boolean profilingEnabled)

optimizeQuery

protected static void optimizeQuery(QueryPlanningInfo info)

handleOrderBy

public static void handleOrderBy(SelectExecutionPlan plan,
                                 QueryPlanningInfo info,
                                 CommandContext ctx,
                                 boolean profilingEnabled)