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

cachedStringForm, children, value

Constructor Summary

Constructors

Constructor	Description
BooleanExpression(int id)

Method Summary

Modifier and Type	Method	Description
abstract BooleanExpression	copy()
boolean	createRangeWith(BooleanExpression match)
protected AndBlock	encapsulateInAndBlock(BooleanExpression item)
abstract Boolean	evaluate(Identifiable currentRecord, CommandContext context)
abstract Boolean	evaluate(Result currentRecord, CommandContext context)
abstract void	extractSubQueries(SubQueryCollector collector)
List<AndBlock>	flatten()
List<BinaryCondition>	getIndexedFunctionConditions(DocumentType iSchemaClass, CommandContext context)
abstract List<String>	getMatchPatternInvolvedAliases()
boolean	isAlwaysTrue()	returns true only if the expression does not need any further evaluation (eg.
boolean	isEmpty()
boolean	isIndexAware(IndexSearchInfo info)
Expression	resolveKeyFrom(BinaryCondition additional)
Expression	resolveKeyTo(BinaryCondition additional)
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

equals, getCacheableElements, getIdentityElements, getValue, hashCode, isCacheable, jjtAddChild, jjtClose, jjtGetChild, jjtGetFirstToken, jjtGetLastToken, jjtGetNumChildren, jjtGetParent, jjtGetValue, jjtOpen, jjtSetFirstToken, jjtSetLastToken, jjtSetParent, jjtSetValue, refersToParent, toString, toString, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, 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)

Method Detail

evaluate

public abstract Boolean evaluate(Identifiable currentRecord,
                                 CommandContext context)

evaluate

public abstract Boolean evaluate(Result currentRecord,
                                 CommandContext context)

getIndexedFunctionConditions

public List<BinaryCondition> getIndexedFunctionConditions(DocumentType iSchemaClass,
                                                          CommandContext context)

flatten

public List<AndBlock> flatten()

encapsulateInAndBlock

protected AndBlock encapsulateInAndBlock(BooleanExpression item)

copy

public abstract BooleanExpression copy()

Overrides:

copy in class SimpleNode

isEmpty

public boolean isEmpty()

extractSubQueries

public abstract void extractSubQueries(SubQueryCollector collector)

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()

createRangeWith

public boolean createRangeWith(BooleanExpression match)

isAlwaysTrue

public boolean isAlwaysTrue()

returns true only if the expression does not need any further evaluation (eg. "true") and always evaluates to true. It is supposed to be used as and optimization, and is allowed to return false negatives

Returns:

isIndexAware

public boolean isIndexAware(IndexSearchInfo info)

resolveKeyFrom

public Expression resolveKeyFrom(BinaryCondition additional)

resolveKeyTo

public Expression resolveKeyTo(BinaryCondition additional)