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

Class OIsDefinedCondition

java.lang.Object

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

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

com.orientechnologies.orient.core.sql.parser.OIsDefinedCondition

All Implemented Interfaces:

Node, OSimpleBooleanExpression

public class OIsDefinedCondition
extends OBooleanExpression
implements OSimpleBooleanExpression

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
OIsDefinedCondition(int id)
OIsDefinedCondition(OrientSql p, int id)

Method Summary

Modifier and Type	Method	Description
OIsDefinedCondition	copy()
boolean	equals(Object o)
boolean	evaluate(OResult currentRecord, OCommandContext ctx)
void	extractSubQueries(SubQueryCollector collector)
protected List<Object>	getExternalCalculationConditions()
List<String>	getMatchPatternInvolvedAliases()	if the condition involved the current pattern (MATCH statement, eg.
protected int	getNumberOfExternalCalculations()
int	hashCode()
boolean	isCacheable()
boolean	needsAliases(Set<String> aliases)
boolean	refersToParent()
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, findIndex, 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

OIsDefinedCondition

public OIsDefinedCondition(int id)

OIsDefinedCondition

public OIsDefinedCondition(OrientSql p,
 int id)

Method Details

evaluate

public boolean evaluate(OResult currentRecord,
 OCommandContext ctx)

Specified by:

evaluate in class OBooleanExpression

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 OIsDefinedCondition 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

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()

Description copied from interface: OSimpleBooleanExpression

if the condition involved the current pattern (MATCH statement, eg. $matched.something = foo), returns the name of involved pattern aliases ("something" in this case)

Specified by:

getMatchPatternInvolvedAliases in interface OSimpleBooleanExpression

Specified by:

getMatchPatternInvolvedAliases in class OBooleanExpression

Returns:

a list of pattern aliases involved in this condition. Null it does not involve the pattern

isCacheable

public boolean isCacheable()

Specified by:

isCacheable in class OBooleanExpression