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 and 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, parent, parser, value

Constructor Summary

Constructors

Constructor and Description
OIsDefinedCondition(int id)
OIsDefinedCondition(OrientSql p, int id)

Method Summary

Modifier and Type	Method and Description
boolean	evaluate(OIdentifiable currentRecord, OCommandContext ctx)
protected List<Object>	getExternalCalculationConditions()
List<String>	getMatchPatternInvolvedAliases() if the condition involved the current pattern (MATCH statement, eg.
protected int	getNumberOfExternalCalculations()
Object	jjtAccept(OrientSqlVisitor visitor, Object data) Accept the visitor.
boolean	supportsBasicCalculation()
void	toString(Map<Object,Object> params, StringBuilder builder)

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

encapsulateInAndBlock, flatten, getIndexedFunctionConditions

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

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

Methods inherited from class java.lang.Object

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

Field Detail

expression

protected OExpression expression

Constructor Detail

OIsDefinedCondition

public OIsDefinedCondition(int id)

OIsDefinedCondition

public OIsDefinedCondition(OrientSql p,
                           int id)

Method Detail

jjtAccept

public Object jjtAccept(OrientSqlVisitor visitor,
                        Object data)

Accept the visitor.

Specified by:

jjtAccept in interface Node

Overrides:

jjtAccept in class OBooleanExpression

evaluate

public boolean evaluate(OIdentifiable currentRecord,
                        OCommandContext ctx)

Specified by:

evaluate in class OBooleanExpression

toString

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

Overrides:

toString 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)

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