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

Class CountFromIndexStep

java.lang.Object

com.orientechnologies.orient.core.sql.executor.AbstractExecutionStep

com.orientechnologies.orient.core.sql.executor.CountFromIndexStep

All Implemented Interfaces:

OExecutionStepInternal

public class CountFromIndexStep
extends AbstractExecutionStep

Returns the number of records contained in an index

Author:

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

Field Summary

Fields inherited from class com.orientechnologies.orient.core.sql.executor.AbstractExecutionStep

prev

Constructor Summary

Constructors

Constructor	Description
CountFromIndexStep(OIndexIdentifier targetIndex, String alias)

Method Summary

Modifier and Type	Method	Description
OExecutionStream	internalStart(OCommandContext ctx)
String	prettyPrint(OPrintContext ctx)

Methods inherited from class com.orientechnologies.orient.core.sql.executor.AbstractExecutionStep

getPrev, setPrevious, start

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.orientechnologies.orient.core.sql.executor.OExecutionStepInternal

canBeCached, copy, deserialize, getName, getSubExecutionPlans, getSubSteps, getTargetNode, getType, serialize, serializeToResult, toResult, toResult

Constructor Details

CountFromIndexStep

public CountFromIndexStep(OIndexIdentifier targetIndex,
 String alias)

Parameters:

targetIndex - the index name as it is parsed by the SQL parsed

alias - the name of the property returned in the result-set

Method Details

internalStart

public OExecutionStream internalStart(OCommandContext ctx)
                               throws OTimeoutException

Specified by:

internalStart in class AbstractExecutionStep

Throws:

OTimeoutException

prettyPrint

public String prettyPrint(OPrintContext ctx)