Package com.arcadedb.query.sql.parser

Class BaseExpression

java.lang.Object

com.arcadedb.query.sql.parser.SimpleNode

com.arcadedb.query.sql.parser.MathExpression

com.arcadedb.query.sql.parser.BaseExpression

All Implemented Interfaces:

Node

public class BaseExpression
extends MathExpression

Nested Class Summary

Nested classes/interfaces inherited from class com.arcadedb.query.sql.parser.MathExpression

MathExpression.Operator

Field Summary

Fields

Modifier and Type	Field	Description
protected BaseIdentifier	identifier
protected InputParameter	inputParam
protected boolean	isNull
protected Modifier	modifier
protected PNumber	number
protected String	string

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

childExpressions, operators

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

cachedStringForm, children, value

Constructor Summary

Constructors

Constructor	Description
BaseExpression(int id)
BaseExpression(Identifier identifier)
BaseExpression(Identifier identifier, Modifier modifier)
BaseExpression(RecordAttribute attr, Modifier modifier)
BaseExpression(String string)

Method Summary

Modifier and Type	Method	Description
boolean	allowsIndexedFunctionExecutionOnTarget(FromClause target, CommandContext context, BinaryCompareOperator operator, Object right)	tests if current expression is an indexed function AND that function can be used on this target
void	applyRemove(ResultInternal result, CommandContext context)
boolean	canExecuteIndexedFunctionWithoutIndex(FromClause target, CommandContext context, BinaryCompareOperator operator, Object right)	tests if current expression is an indexed function AND that function can also be executed without using the index
BaseExpression	copy()
static String	decode(String iText)	Transforms, only if needed, the source string un-escaping the characters \ and ".
static String	encode(String iText)	Transforms, only if needed, the source string escaping the characters \ and ".
long	estimateIndexedFunction(FromClause target, CommandContext context, BinaryCompareOperator operator, Object right)
Object	execute(Identifiable iCurrentRecord, CommandContext context)
Object	execute(Result iCurrentRecord, CommandContext context)
Iterable<Record>	executeIndexedFunction(FromClause target, CommandContext context, BinaryCompareOperator operator, Object right)
boolean	executeIndexedFunctionAfterIndexSearch(FromClause target, CommandContext context, BinaryCompareOperator operator, Object right)	tests if current expression is an indexed function AND the function has also to be executed after the index search.
void	extractSubQueries(Identifier letAlias, SubQueryCollector collector)
void	extractSubQueries(SubQueryCollector collector)
AggregationContext	getAggregationContext(CommandContext context)
protected SimpleNode[]	getCacheableElements()
Expression	getExpandContent()
BaseIdentifier	getIdentifier()
protected Object[]	getIdentityElements()
List<String>	getMatchPatternInvolvedAliases()
Modifier	getModifier()
boolean	isAggregate(CommandContext context)
boolean	isBaseIdentifier()
boolean	isCount()
boolean	isDefinedFor(Record currentRecord)
boolean	isDefinedFor(Result currentRecord)
boolean	isEarlyCalculated(CommandContext context)
boolean	isExpand()
boolean	isIndexedFunctionCall(CommandContext context)
boolean	refersToParent()
void	setIdentifier(BaseIdentifier identifier)
void	setInputParam(InputParameter inputParam)
void	setModifier(Modifier modifier)
SimpleNode	splitForAggregation(AggregateProjectionSplit aggregateProj, CommandContext context)
void	toString(Map<String,Object> params, StringBuilder builder)

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

getChildExpressions, getOperators, setChildExpressions

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

equals, getValue, hashCode, isCacheable, 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

number

protected PNumber number

identifier

protected BaseIdentifier identifier

inputParam

protected InputParameter inputParam

string

protected String string

modifier

protected Modifier modifier

isNull

protected boolean isNull

Constructor Detail

BaseExpression

public BaseExpression(int id)

BaseExpression

public BaseExpression(Identifier identifier)

BaseExpression

public BaseExpression(String string)

BaseExpression

public BaseExpression(Identifier identifier,
                      Modifier modifier)

BaseExpression

public BaseExpression(RecordAttribute attr,
                      Modifier modifier)

Method Detail

setModifier

public void setModifier(Modifier modifier)

toString

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

Overrides:

toString in class MathExpression

execute

public Object execute(Identifiable iCurrentRecord,
                      CommandContext context)

Overrides:

execute in class MathExpression

execute

public Object execute(Result iCurrentRecord,
                      CommandContext context)

Overrides:

execute in class MathExpression

isIndexedFunctionCall

public boolean isIndexedFunctionCall(CommandContext context)

Overrides:

isIndexedFunctionCall in class MathExpression

estimateIndexedFunction

public long estimateIndexedFunction(FromClause target,
                                    CommandContext context,
                                    BinaryCompareOperator operator,
                                    Object right)

Overrides:

estimateIndexedFunction in class MathExpression

executeIndexedFunction

public Iterable<Record> executeIndexedFunction(FromClause target,
                                               CommandContext context,
                                               BinaryCompareOperator operator,
                                               Object right)

Overrides:

executeIndexedFunction in class MathExpression

canExecuteIndexedFunctionWithoutIndex

public boolean canExecuteIndexedFunctionWithoutIndex(FromClause target,
                                                     CommandContext context,
                                                     BinaryCompareOperator operator,
                                                     Object right)

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

Overrides:

canExecuteIndexedFunctionWithoutIndex in class MathExpression

Parameters:

target - the query target

context - the execution context

operator -

right -

Returns:

true if current expression is an indexed function AND that function can also be executed without using the index, false otherwise

allowsIndexedFunctionExecutionOnTarget

public boolean allowsIndexedFunctionExecutionOnTarget(FromClause target,
                                                      CommandContext context,
                                                      BinaryCompareOperator operator,
                                                      Object right)

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

Overrides:

allowsIndexedFunctionExecutionOnTarget in class MathExpression

Parameters:

target - the query target

context - the execution context

operator -

right -

Returns:

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

executeIndexedFunctionAfterIndexSearch

public boolean executeIndexedFunctionAfterIndexSearch(FromClause target,
                                                      CommandContext context,
                                                      BinaryCompareOperator operator,
                                                      Object right)

tests if current expression is 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

Overrides:

executeIndexedFunctionAfterIndexSearch in class MathExpression

Parameters:

target - the query target

context - the execution context

Returns:

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

isBaseIdentifier

public boolean isBaseIdentifier()

Overrides:

isBaseIdentifier in class MathExpression

isEarlyCalculated

public boolean isEarlyCalculated(CommandContext context)

Overrides:

isEarlyCalculated in class MathExpression

isExpand

public boolean isExpand()

Overrides:

isExpand in class MathExpression

getExpandContent

public Expression getExpandContent()

Overrides:

getExpandContent in class MathExpression

isAggregate

public boolean isAggregate(CommandContext context)

Overrides:

isAggregate in class MathExpression

isCount

public boolean isCount()

Overrides:

isCount in class MathExpression

splitForAggregation

public SimpleNode splitForAggregation(AggregateProjectionSplit aggregateProj,
                                      CommandContext context)

Overrides:

splitForAggregation in class MathExpression

getAggregationContext

public AggregationContext getAggregationContext(CommandContext context)

Overrides:

getAggregationContext in class MathExpression

copy

public BaseExpression copy()

Overrides:

copy in class MathExpression

refersToParent

public boolean refersToParent()

Overrides:

refersToParent in class SimpleNode

setIdentifier

public void setIdentifier(BaseIdentifier identifier)

getIdentifier

public BaseIdentifier getIdentifier()

getModifier

public Modifier getModifier()

getMatchPatternInvolvedAliases

public List<String> getMatchPatternInvolvedAliases()

Overrides:

getMatchPatternInvolvedAliases in class MathExpression

applyRemove

public void applyRemove(ResultInternal result,
                        CommandContext context)

Overrides:

applyRemove in class MathExpression

isDefinedFor

public boolean isDefinedFor(Result currentRecord)

Overrides:

isDefinedFor in class MathExpression

isDefinedFor

public boolean isDefinedFor(Record currentRecord)

Overrides:

isDefinedFor in class MathExpression

extractSubQueries

public void extractSubQueries(Identifier letAlias,
                              SubQueryCollector collector)

Overrides:

extractSubQueries in class MathExpression

extractSubQueries

public void extractSubQueries(SubQueryCollector collector)

Overrides:

extractSubQueries in class MathExpression

getIdentityElements

protected Object[] getIdentityElements()

Overrides:

getIdentityElements in class MathExpression

getCacheableElements

protected SimpleNode[] getCacheableElements()

Overrides:

getCacheableElements in class MathExpression

setInputParam

public void setInputParam(InputParameter inputParam)

encode

public static String encode(String iText)

Transforms, only if needed, the source string escaping the characters \ and ".

Parameters:

iText - Input String

Returns:

Modified string if needed, otherwise the same input object

decode

public static String decode(String iText)

Transforms, only if needed, the source string un-escaping the characters \ and ".

Parameters:

iText - Input String

Returns:

Modified string if needed, otherwise the same input object