Package com.arcadedb.query.sql.parser

Class BooleanExpression

java.lang.Object

com.arcadedb.query.sql.parser.SimpleNode

com.arcadedb.query.sql.parser.BooleanExpression

All Implemented Interfaces:

Node

Direct Known Subclasses:

AndBlock, BetweenCondition, BinaryCondition, ContainsAllCondition, ContainsAnyCondition, ContainsCondition, ContainsTextCondition, ContainsValueCondition, InCondition, IndexMatchCondition, InstanceofCondition, IsDefinedCondition, IsNotDefinedCondition, IsNotNullCondition, IsNullCondition, MatchesCondition, NotBlock, NotInCondition, OrBlock, ParenthesisBlock

public abstract class BooleanExpression
extends SimpleNode

Created by luigidellaquila on 07/11/14.

Field Summary

Fields

Modifier and Type	Field	Description
static BooleanExpression	FALSE
static BooleanExpression	TRUE

Fields inherited from class com.arcadedb.query.sql.parser.SimpleNode

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

Constructor Summary

Constructors

Constructor	Description
BooleanExpression(int id)
BooleanExpression(SqlParser p, int id)

Method Summary

Modifier and Type	Method	Description
abstract BooleanExpression	copy()
void	deserialize(Result fromResult)
static BooleanExpression	deserializeFromOResult(Result doc)
protected AndBlock	encapsulateInAndBlock(BooleanExpression item)
abstract boolean	evaluate(Identifiable currentRecord, CommandContext ctx)
abstract boolean	evaluate(Result currentRecord, CommandContext ctx)
abstract void	extractSubQueries(SubQueryCollector collector)
List<AndBlock>	flatten()
protected abstract List<Object>	getExternalCalculationConditions()
List<BinaryCondition>	getIndexedFunctionConditions(DocumentType iSchemaClass, Database database)
abstract List<String>	getMatchPatternInvolvedAliases()
protected abstract int	getNumberOfExternalCalculations()
abstract boolean	isCacheable()
boolean	isEmpty()
abstract boolean	needsAliases(Set<String> aliases)
abstract boolean	refersToParent()
Result	serialize()
protected abstract boolean	supportsBasicCalculation()
Optional<UpdateItem>	transformToUpdateItem()	returns the equivalent of current condition as an UPDATE expression with the same syntax, if possible.

Methods inherited from class com.arcadedb.query.sql.parser.SimpleNode

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

Methods inherited from class java.lang.Object

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

Field Detail

TRUE

public static final BooleanExpression TRUE

FALSE

public static final BooleanExpression FALSE

Constructor Detail

BooleanExpression

public BooleanExpression(int id)

BooleanExpression

public BooleanExpression(SqlParser p,
                         int id)

Method Detail

evaluate

public abstract boolean evaluate(Identifiable currentRecord,
                                 CommandContext ctx)

evaluate

public abstract boolean evaluate(Result currentRecord,
                                 CommandContext ctx)

supportsBasicCalculation

protected abstract boolean supportsBasicCalculation()

Returns:

true if this expression can be calculated in plain Java, false otherwise

getNumberOfExternalCalculations

protected abstract int getNumberOfExternalCalculations()

Returns:

the number of sub-expressions that have to be calculated using an external engine

getExternalCalculationConditions

protected abstract List<Object> getExternalCalculationConditions()

Returns:

the sub-expressions that have to be calculated using an external engine

getIndexedFunctionConditions

public List<BinaryCondition> getIndexedFunctionConditions(DocumentType iSchemaClass,
                                                          Database database)

flatten

public List<AndBlock> flatten()

encapsulateInAndBlock

protected AndBlock encapsulateInAndBlock(BooleanExpression item)

needsAliases

public abstract boolean needsAliases(Set<String> aliases)

copy

public abstract BooleanExpression copy()

Overrides:

copy in class SimpleNode

isEmpty

public boolean isEmpty()

extractSubQueries

public abstract void extractSubQueries(SubQueryCollector collector)

refersToParent

public abstract boolean refersToParent()

transformToUpdateItem

public Optional<UpdateItem> transformToUpdateItem()

returns the equivalent of current condition as an UPDATE expression with the same syntax, if possible.

Eg. name = 3 can be considered a condition or an assignment. This method transforms the condition in an assignment. This is used mainly for UPSERT operations.

Returns:

the equivalent of current condition as an UPDATE expression with the same syntax, if possible.

getMatchPatternInvolvedAliases

public abstract List<String> getMatchPatternInvolvedAliases()

deserializeFromOResult

public static BooleanExpression deserializeFromOResult(Result doc)

serialize

public Result serialize()

deserialize

public void deserialize(Result fromResult)

isCacheable

public abstract boolean isCacheable()