org.apache.iotdb.db.query.expression.binary

类 BinaryExpression

java.lang.Object

org.apache.iotdb.db.query.expression.Expression

org.apache.iotdb.db.query.expression.binary.BinaryExpression

直接已知子类:

AdditionExpression, DivisionExpression, ModuloExpression, MultiplicationExpression, SubtractionExpression

public abstract class BinaryExpression
extends Expression

字段概要

字段

限定符和类型	字段和说明
protected Expression	leftExpression
protected Expression	rightExpression

从类继承的字段 org.apache.iotdb.db.query.expression.Expression

isConstantOperandCache

构造器概要

构造器

限定符	构造器和说明
protected	BinaryExpression(Expression leftExpression, Expression rightExpression)

方法概要

限定符和类型	方法和说明
void	collectPaths(Set<PartialPath> pathSet)
void	concat(List<PartialPath> prefixPaths, List<Expression> resultExpressions)
IntermediateLayer	constructIntermediateLayer(long queryId, UDTFPlan udtfPlan, RawQueryInputLayer rawTimeSeriesInputLayer, Map<Expression,IntermediateLayer> expressionIntermediateLayerMap, Map<Expression,TSDataType> expressionDataTypeMap, LayerMemoryAssigner memoryAssigner)
protected abstract ArithmeticBinaryTransformer	constructTransformer(LayerPointReader leftParentLayerPointReader, LayerPointReader rightParentLayerPointReader)
void	constructUdfExecutors(Map<String,UDTFExecutor> expressionName2Executor, ZoneId zoneId)
List<Expression>	getExpressions() returns the DIRECT children expressions if it has any, otherwise an EMPTY list will be returned
String	getExpressionStringInternal() Sub-classes should override this method to provide valid string representation of this object.
Expression	getLeftExpression()
Expression	getRightExpression()
boolean	isConstantOperandInternal() Sub-classes should override this method indicating if the expression is a constant operand
boolean	isTimeSeriesGeneratingFunctionExpression()
boolean	isUserDefinedAggregationFunctionExpression()
protected abstract String	operator()
void	removeWildcards(WildcardsRemover wildcardsRemover, List<Expression> resultExpressions)
void	updateStatisticsForMemoryAssigner(LayerMemoryAssigner memoryAssigner)

从类继承的方法 org.apache.iotdb.db.query.expression.Expression

equals, getExpressionString, hashCode, isConstantOperand, isPlainAggregationFunctionExpression, iterator, toString

从类继承的方法 java.lang.Object

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

字段详细资料

leftExpression

protected final Expression leftExpression

rightExpression

protected final Expression rightExpression

构造器详细资料

BinaryExpression

protected BinaryExpression(Expression leftExpression,
                           Expression rightExpression)

方法详细资料

getLeftExpression

public Expression getLeftExpression()

getRightExpression

public Expression getRightExpression()

isConstantOperandInternal

public boolean isConstantOperandInternal()

从类复制的说明: Expression

Sub-classes should override this method indicating if the expression is a constant operand

指定者:

isConstantOperandInternal 在类中 Expression

isTimeSeriesGeneratingFunctionExpression

public boolean isTimeSeriesGeneratingFunctionExpression()

覆盖:

isTimeSeriesGeneratingFunctionExpression 在类中 Expression

isUserDefinedAggregationFunctionExpression

public boolean isUserDefinedAggregationFunctionExpression()

覆盖:

isUserDefinedAggregationFunctionExpression 在类中 Expression

getExpressions

public List<Expression> getExpressions()

从类复制的说明: Expression

returns the DIRECT children expressions if it has any, otherwise an EMPTY list will be returned

指定者:

getExpressions 在类中 Expression

concat

public final void concat(List<PartialPath> prefixPaths,
                         List<Expression> resultExpressions)

指定者:

concat 在类中 Expression

removeWildcards

public final void removeWildcards(WildcardsRemover wildcardsRemover,
                                  List<Expression> resultExpressions)
                           throws LogicalOptimizeException

指定者:

removeWildcards 在类中 Expression

抛出:

LogicalOptimizeException

collectPaths

public void collectPaths(Set<PartialPath> pathSet)

指定者:

collectPaths 在类中 Expression

constructUdfExecutors

public void constructUdfExecutors(Map<String,UDTFExecutor> expressionName2Executor,
                                  ZoneId zoneId)

指定者:

constructUdfExecutors 在类中 Expression

updateStatisticsForMemoryAssigner

public void updateStatisticsForMemoryAssigner(LayerMemoryAssigner memoryAssigner)

指定者:

updateStatisticsForMemoryAssigner 在类中 Expression

constructIntermediateLayer

public IntermediateLayer constructIntermediateLayer(long queryId,
                                                    UDTFPlan udtfPlan,
                                                    RawQueryInputLayer rawTimeSeriesInputLayer,
                                                    Map<Expression,IntermediateLayer> expressionIntermediateLayerMap,
                                                    Map<Expression,TSDataType> expressionDataTypeMap,
                                                    LayerMemoryAssigner memoryAssigner)
                                             throws QueryProcessException,
                                                    IOException

指定者:

constructIntermediateLayer 在类中 Expression

抛出:

QueryProcessException

IOException

constructTransformer

protected abstract ArithmeticBinaryTransformer constructTransformer(LayerPointReader leftParentLayerPointReader,
                                                                    LayerPointReader rightParentLayerPointReader)

getExpressionStringInternal

public final String getExpressionStringInternal()

从类复制的说明: Expression

Sub-classes should override this method to provide valid string representation of this object. See Expression.getExpressionString()

指定者:

getExpressionStringInternal 在类中 Expression

operator

protected abstract String operator()