Package com.arcadedb.query.sql.parser

Class LevelZeroIdentifier

java.lang.Object

com.arcadedb.query.sql.parser.SimpleNode

com.arcadedb.query.sql.parser.LevelZeroIdentifier

All Implemented Interfaces:

Node

public class LevelZeroIdentifier
extends SimpleNode

Field Summary

Fields

Modifier and Type	Field	Description
protected PCollection	collection
protected FunctionCall	functionCall
protected Boolean	self

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

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

Constructor Summary

Constructors

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

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
boolean	canExecuteIndexedFunctionWithoutIndex(FromClause target, CommandContext context, BinaryCompareOperator operator, Object right)	tests if current expression is an indexed funciton AND that function can also be executed without using the index
LevelZeroIdentifier	copy()
void	deserialize(Result fromResult)
boolean	equals(Object o)
long	estimateIndexedFunction(FromClause target, CommandContext context, BinaryCompareOperator operator, Object right)
Object	execute(Record iCurrentRecord, CommandContext ctx)
Object	execute(Result iCurrentRecord, CommandContext ctx)
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 ctx)
PCollection	getCollection()
Expression	getExpandContent()
FunctionCall	getFunctionCall()
Boolean	getSelf()
int	hashCode()
boolean	isAggregate()
boolean	isCacheable()
boolean	isCount()
boolean	isEarlyCalculated()
boolean	isExpand()
boolean	isIndexedFunctionCall()
boolean	needsAliases(Set<String> aliases)
boolean	refersToParent()
Result	serialize()
void	setCollection(PCollection collection)
SimpleNode	splitForAggregation(AggregateProjectionSplit aggregateProj)
void	toString(Map<String,Object> params, StringBuilder builder)

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

Methods inherited from class java.lang.Object

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

Field Detail

functionCall

protected FunctionCall functionCall

self

protected Boolean self

collection

protected PCollection collection

Constructor Detail

LevelZeroIdentifier

public LevelZeroIdentifier(int id)

LevelZeroIdentifier

public LevelZeroIdentifier(SqlParser p,
                           int id)

Method Detail

toString

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

Overrides:

toString in class SimpleNode

execute

public Object execute(Record iCurrentRecord,
                      CommandContext ctx)

execute

public Object execute(Result iCurrentRecord,
                      CommandContext ctx)

isIndexedFunctionCall

public boolean isIndexedFunctionCall()

estimateIndexedFunction

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

executeIndexedFunction

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

canExecuteIndexedFunctionWithoutIndex

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

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

Parameters:

target - the query target

context - the execution context

operator -

right -

Returns:

true if current expression is an indexed funciton 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

Parameters:

target - the query target

context - the execution context

operator -

right -

Returns:

true if current expression involves 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

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.

isExpand

public boolean isExpand()

getExpandContent

public Expression getExpandContent()

needsAliases

public boolean needsAliases(Set<String> aliases)

isAggregate

public boolean isAggregate()

isCount

public boolean isCount()

isEarlyCalculated

public boolean isEarlyCalculated()

splitForAggregation

public SimpleNode splitForAggregation(AggregateProjectionSplit aggregateProj)

getAggregationContext

public AggregationContext getAggregationContext(CommandContext ctx)

copy

public LevelZeroIdentifier copy()

Overrides:

copy in class SimpleNode

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

setCollection

public void setCollection(PCollection collection)

refersToParent

public boolean refersToParent()

getFunctionCall

public FunctionCall getFunctionCall()

getSelf

public Boolean getSelf()

getCollection

public PCollection getCollection()

serialize

public Result serialize()

deserialize

public void deserialize(Result fromResult)

extractSubQueries

public void extractSubQueries(Identifier letAlias,
                              SubQueryCollector collector)

extractSubQueries

public void extractSubQueries(SubQueryCollector collector)

isCacheable

public boolean isCacheable()