Package com.orientechnologies.orient.core.sql.executor

Class OSelectExecutionPlanner

java.lang.Object

com.orientechnologies.orient.core.sql.executor.OSelectExecutionPlanner

public class OSelectExecutionPlanner
extends Object

Author:

Luigi Dell'Aquila (l.dellaquila-(at)-orientdb.com)

Constructor Summary

Constructors

Constructor	Description
OSelectExecutionPlanner(OSelectStatement oSelectStatement)

Method Summary

Modifier and Type	Method	Description
OInternalExecutionPlan	createExecutionPlan(OCommandContext ctx, boolean useCache)
static void	handleOrderBy(OSelectExecutionPlan plan, QueryPlanningInfo info, OCommandContext ctx)
static void	handleProjectionsBlock(OSelectExecutionPlan result, QueryPlanningInfo info, OCommandContext ctx)
static void	handleUnwind(OSelectExecutionPlan result, QueryPlanningInfo info)
protected static void	optimizeQuery(QueryPlanningInfo info, OCommandContext ctx)
protected static OProjection	translateDistinct(OProjection 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 Details

OSelectExecutionPlanner

public OSelectExecutionPlanner(OSelectStatement oSelectStatement)

Method Details

createExecutionPlan

public OInternalExecutionPlan createExecutionPlan(OCommandContext ctx,
 boolean useCache)

handleProjectionsBlock

public static void handleProjectionsBlock(OSelectExecutionPlan result,
 QueryPlanningInfo info,
 OCommandContext ctx)

translateDistinct

protected static OProjection translateDistinct(OProjection 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(OSelectExecutionPlan result,
 QueryPlanningInfo info)

optimizeQuery

protected static void optimizeQuery(QueryPlanningInfo info,
 OCommandContext ctx)

handleOrderBy

public static void handleOrderBy(OSelectExecutionPlan plan,
 QueryPlanningInfo info,
 OCommandContext ctx)