com.orientechnologies.orient.core.sql.parser

Class OBinaryCondition

java.lang.Object

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

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

com.orientechnologies.orient.core.sql.parser.OBinaryCondition

All Implemented Interfaces:

Node

public class OBinaryCondition
extends OBooleanExpression

Field Summary

Fields

Modifier and Type	Field and Description
protected OExpression	left
protected OBinaryCompareOperator	operator
protected OExpression	right

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
OBinaryCondition(int id)
OBinaryCondition(OrientSql p, int id)

Method Summary

Modifier and Type	Method and Description
boolean	allowsIndexedFunctionExecutionOnTarget(OFromClause target, OCommandContext context) tests if current expression involves an indexed function AND that function can be used on this target
boolean	canExecuteIndexedFunctionWithoutIndex(OFromClause target, OCommandContext context) tests if current expression involves an indexed funciton AND that function can also be executed without using the index
OBinaryCondition	copy()
void	deserialize(OResult fromResult)
boolean	equals(Object o)
long	estimateIndexed(OFromClause target, OCommandContext context)
boolean	evaluate(OIdentifiable currentRecord, OCommandContext ctx)
boolean	evaluate(OResult currentRecord, OCommandContext ctx)
Iterable<OIdentifiable>	executeIndexedFunction(OFromClause target, OCommandContext context)
boolean	executeIndexedFunctionAfterIndexSearch(OFromClause target, OCommandContext context) tests if current expression involves an indexed function AND the function has also to be executed after the index search.
void	extractSubQueries(SubQueryCollector collector)
protected List<Object>	getExternalCalculationConditions()
List<OBinaryCondition>	getIndexedFunctionConditions(OClass iSchemaClass, ODatabaseDocumentInternal database)
OExpression	getLeft()
List<String>	getMatchPatternInvolvedAliases()
protected int	getNumberOfExternalCalculations()
OBinaryCompareOperator	getOperator()
OExpression	getRight()
int	hashCode()
static OSelectStatement	indexChainToStatement(OModifier modifier, OClass clazz, OExpression right, OCommandContext ctx)
boolean	isCacheable()
OBinaryCondition	isIndexedFunctionCondition(OClass iSchemaClass, ODatabaseDocumentInternal database)
boolean	needsAliases(Set<String> aliases)
boolean	refersToParent()
OBooleanExpression	rewriteIndexChainsAsSubqueries(OCommandContext ctx, OClass clazz)
OResult	serialize()
void	setLeft(OExpression left)
void	setOperator(OBinaryCompareOperator operator)
void	setRight(OExpression right)
protected boolean	supportsBasicCalculation()
void	toString(Map<Object,Object> params, StringBuilder builder)
Optional<OUpdateItem>	transformToUpdateItem() returns the equivalent of current condition as an UPDATE expression with the same syntax, if possible.
void	translateLuceneOperator()

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

deserializeFromOResult, encapsulateInAndBlock, flatten, isAlwaysTrue, isEmpty

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

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

Methods inherited from class java.lang.Object

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

Field Detail

left

protected OExpression left

operator

protected OBinaryCompareOperator operator

right

protected OExpression right

Constructor Detail

OBinaryCondition

public OBinaryCondition(int id)

OBinaryCondition

public OBinaryCondition(OrientSql p,
                        int id)

Method Detail

evaluate

public boolean evaluate(OIdentifiable currentRecord,
                        OCommandContext ctx)

Specified by:

evaluate in class OBooleanExpression

evaluate

public boolean evaluate(OResult 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

protected 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)

isIndexedFunctionCondition

public OBinaryCondition isIndexedFunctionCondition(OClass iSchemaClass,
                                                   ODatabaseDocumentInternal database)

estimateIndexed

public long estimateIndexed(OFromClause target,
                            OCommandContext context)

executeIndexedFunction

public Iterable<OIdentifiable> executeIndexedFunction(OFromClause target,
                                                      OCommandContext context)

canExecuteIndexedFunctionWithoutIndex

public boolean canExecuteIndexedFunctionWithoutIndex(OFromClause target,
                                                     OCommandContext context)

tests if current expression involves an indexed funciton AND that function can also be executed without using the index

Parameters:

target - the query target

context - the execution context

Returns:

true if current expression involves an indexed function AND that function can be used on this target, false otherwise

allowsIndexedFunctionExecutionOnTarget

public boolean allowsIndexedFunctionExecutionOnTarget(OFromClause target,
                                                      OCommandContext context)

tests if current expression involves an indexed function AND that function can be used on this target

Parameters:

target - the query target

context - the execution context

Returns:

true if current expression involves an indexed function AND that function can be used on this target, false otherwise

executeIndexedFunctionAfterIndexSearch

public boolean executeIndexedFunctionAfterIndexSearch(OFromClause target,
                                                      OCommandContext context)

tests if current expression involves an indexed function AND the function has also to be executed after the index search. In some cases, the index search is accurate, so this condition can be excluded from further evaluation. In other cases the result from the index is a superset of the expected result, so the function has to be executed anyway for further filtering

Parameters:

target - the query target

context - the execution context

Returns:

true if current expression involves an indexed function AND the function has also to be executed after the index search.

getIndexedFunctionConditions

public List<OBinaryCondition> getIndexedFunctionConditions(OClass iSchemaClass,
                                                           ODatabaseDocumentInternal database)

Overrides:

getIndexedFunctionConditions in class OBooleanExpression

needsAliases

public boolean needsAliases(Set<String> aliases)

Specified by:

needsAliases in class OBooleanExpression

copy

public OBinaryCondition 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

transformToUpdateItem

public Optional<OUpdateItem> transformToUpdateItem()

Description copied from class: OBooleanExpression

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.

Overrides:

transformToUpdateItem in class OBooleanExpression

Returns:

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

getLeft

public OExpression getLeft()

getOperator

public OBinaryCompareOperator getOperator()

getRight

public OExpression getRight()

setLeft

public void setLeft(OExpression left)

setOperator

public void setOperator(OBinaryCompareOperator operator)

setRight

public void setRight(OExpression right)

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

translateLuceneOperator

public void translateLuceneOperator()

Overrides:

translateLuceneOperator in class OBooleanExpression

serialize

public OResult serialize()

Overrides:

serialize in class OBooleanExpression

deserialize

public void deserialize(OResult fromResult)

Overrides:

deserialize in class OBooleanExpression

isCacheable

public boolean isCacheable()

Specified by:

isCacheable in class OBooleanExpression

rewriteIndexChainsAsSubqueries

public OBooleanExpression rewriteIndexChainsAsSubqueries(OCommandContext ctx,
                                                         OClass clazz)

Overrides:

rewriteIndexChainsAsSubqueries in class OBooleanExpression

indexChainToStatement

public static OSelectStatement indexChainToStatement(OModifier modifier,
                                                     OClass clazz,
                                                     OExpression right,
                                                     OCommandContext ctx)