Package com.arcadedb.query.sql.executor

Class FetchFromIndexStep

java.lang.Object

com.arcadedb.query.sql.executor.AbstractExecutionStep

com.arcadedb.query.sql.executor.FetchFromIndexStep

All Implemented Interfaces:

ExecutionStep, ExecutionStepInternal

Direct Known Subclasses:

FetchFromIndexValuesStep

public class FetchFromIndexStep
extends AbstractExecutionStep

Created by luigidellaquila on 23/07/16.

Field Summary

Fields

Modifier and Type	Field	Description
protected BooleanExpression	condition
protected RangeIndex	index
protected String	indexName

Fields inherited from class com.arcadedb.query.sql.executor.AbstractExecutionStep

ctx, next, prev, profilingEnabled, timedOut

Constructor Summary

Constructors

Constructor	Description
FetchFromIndexStep(RangeIndex index, BooleanExpression condition, BinaryCondition additionalRangeCondition, boolean orderAsc, CommandContext ctx, boolean profilingEnabled)
FetchFromIndexStep(RangeIndex index, BooleanExpression condition, BinaryCondition additionalRangeCondition, CommandContext ctx, boolean profilingEnabled)

Method Summary

Modifier and Type	Method	Description
boolean	canBeCached()
ExecutionStep	copy(CommandContext ctx)
void	deserialize(Result fromResult)
long	getCost()	returns the absolute cost (in nanoseconds) of the execution of this step
protected boolean	isOrderAsc()
String	prettyPrint(int depth, int indent)
void	reset()
Result	serialize()
ResultSet	syncPull(CommandContext ctx, int nRecords)

Methods inherited from class com.arcadedb.query.sql.executor.AbstractExecutionStep

close, getContext, getCostFormatted, getNext, getPrev, isProfilingEnabled, isTimedOut, sendTimeout, setNext, setPrevious, setProfilingEnabled

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.arcadedb.query.sql.executor.ExecutionStep

toResult

Methods inherited from interface com.arcadedb.query.sql.executor.ExecutionStepInternal

getDescription, getName, getSubExecutionPlans, getSubSteps, getTargetNode, getType

Field Detail

index

protected RangeIndex index

condition

protected BooleanExpression condition

indexName

protected String indexName

Constructor Detail

FetchFromIndexStep

public FetchFromIndexStep(RangeIndex index,
                          BooleanExpression condition,
                          BinaryCondition additionalRangeCondition,
                          CommandContext ctx,
                          boolean profilingEnabled)

FetchFromIndexStep

public FetchFromIndexStep(RangeIndex index,
                          BooleanExpression condition,
                          BinaryCondition additionalRangeCondition,
                          boolean orderAsc,
                          CommandContext ctx,
                          boolean profilingEnabled)

Method Detail

syncPull

public ResultSet syncPull(CommandContext ctx,
                          int nRecords)
                   throws TimeoutException

Throws:

TimeoutException

isOrderAsc

protected boolean isOrderAsc()

prettyPrint

public String prettyPrint(int depth,
                          int indent)

getCost

public long getCost()

Description copied from interface: ExecutionStep

returns the absolute cost (in nanoseconds) of the execution of this step

Returns:

the absolute cost (in nanoseconds) of the execution of this step, -1 if not calculated

serialize

public Result serialize()

deserialize

public void deserialize(Result fromResult)

reset

public void reset()

canBeCached

public boolean canBeCached()

copy

public ExecutionStep copy(CommandContext ctx)