Package com.orientechnologies.orient.core.sql.parser

Class OIsNullCondition

java.lang.Object

com.orientechnologies.orient.core.sql.parser.SimpleNode

com.orientechnologies.orient.core.sql.parser.OBooleanExpression

com.orientechnologies.orient.core.sql.parser.OIsNullCondition

All Implemented Interfaces:

Node

public class OIsNullCondition
extends OBooleanExpression

Field Summary

Fields

Modifier and Type	Field	Description
protected OExpression	expression

Fields inherited from class com.orientechnologies.orient.core.sql.parser.OBooleanExpression

FALSE, TRUE

Fields inherited from class com.orientechnologies.orient.core.sql.parser.SimpleNode

children, firstToken, id, lastToken, PARAMETER_PLACEHOLDER, parent, parser, value

Constructor Summary

Constructors

Constructor	Description
OIsNullCondition(int id)
OIsNullCondition(OrientSql p, int id)

Method Summary

Modifier and Type	Method	Description
OIsNullCondition	copy()
boolean	equals(Object o)
boolean	evaluate(OResult currentRecord, OCommandContext ctx)
void	extractSubQueries(SubQueryCollector collector)
Optional<OIndexCandidate>	findIndex(OIndexFinder info, OCommandContext ctx)
OExpression	getExpression()
protected List<Object>	getExternalCalculationConditions()
List<String>	getMatchPatternInvolvedAliases()
protected int	getNumberOfExternalCalculations()
int	hashCode()
boolean	isCacheable()
boolean	needsAliases(Set<String> aliases)
boolean	refersToParent()
void	setExpression(OExpression expression)
boolean	supportsBasicCalculation()
void	toGenericStatement(StringBuilder builder)
void	toString(Map<Object,Object> params, StringBuilder builder)

Methods inherited from class com.orientechnologies.orient.core.sql.parser.OBooleanExpression

conditionsCount, deserialize, deserializeFromOResult, encapsulateInAndBlock, extractRidRanges, flatten, getIndexedFunctionConditions, getIndexKeyCondition, getIndexRidCondition, isAlwaysTrue, isEmpty, rewriteIndexChainsAsSubqueries, serialize, transformToUpdateItem, translateLuceneOperator

Methods inherited from class com.orientechnologies.orient.core.sql.parser.SimpleNode

dump, getValue, jjtAddChild, jjtClose, jjtGetChild, jjtGetFirstToken, jjtGetLastToken, jjtGetNumChildren, jjtGetParent, jjtGetValue, jjtOpen, jjtSetFirstToken, jjtSetLastToken, jjtSetParent, jjtSetValue, toGenericStatement, toString, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Details

expression

protected OExpression expression

Constructor Details

OIsNullCondition

public OIsNullCondition(int id)

OIsNullCondition

public OIsNullCondition(OrientSql p,
 int id)

Method Details

evaluate

public boolean evaluate(OResult currentRecord,
 OCommandContext ctx)

Specified by:

evaluate in class OBooleanExpression

getExpression

public OExpression getExpression()

setExpression

public void setExpression(OExpression expression)

toString

public void toString(Map<Object,Object> params,
 StringBuilder builder)

Specified by:

toString in class SimpleNode

toGenericStatement

public void toGenericStatement(StringBuilder builder)

Specified by:

toGenericStatement in class SimpleNode

supportsBasicCalculation

public boolean supportsBasicCalculation()

Specified by:

supportsBasicCalculation in class OBooleanExpression

Returns:

true if this expression can be calculated in plain Java, false otherwise (eg. LUCENE operator)

getNumberOfExternalCalculations

protected int getNumberOfExternalCalculations()

Specified by:

getNumberOfExternalCalculations in class OBooleanExpression

Returns:

the number of sub-expressions that have to be calculated using an external engine (eg. LUCENE)

getExternalCalculationConditions

protected List<Object> getExternalCalculationConditions()

Specified by:

getExternalCalculationConditions in class OBooleanExpression

Returns:

the sub-expressions that have to be calculated using an external engine (eg. LUCENE)

needsAliases

public boolean needsAliases(Set<String> aliases)

Specified by:

needsAliases in class OBooleanExpression

copy

public OIsNullCondition copy()

Specified by:

copy in class OBooleanExpression

extractSubQueries

public void extractSubQueries(SubQueryCollector collector)

Specified by:

extractSubQueries in class OBooleanExpression

refersToParent

public boolean refersToParent()

Specified by:

refersToParent in class OBooleanExpression

findIndex

public Optional<OIndexCandidate> findIndex(OIndexFinder info,
 OCommandContext ctx)

Overrides:

findIndex in class OBooleanExpression

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

getMatchPatternInvolvedAliases

public List<String> getMatchPatternInvolvedAliases()

Specified by:

getMatchPatternInvolvedAliases in class OBooleanExpression

isCacheable

public boolean isCacheable()

Specified by:

isCacheable in class OBooleanExpression