Package org.apache.iotdb.db.mpp.plan.expression.multi

Class FunctionExpression

java.lang.Object

org.apache.iotdb.db.mpp.plan.expression.Expression

org.apache.iotdb.db.mpp.plan.expression.multi.FunctionExpression

public class FunctionExpression
extends Expression

Field Summary

Fields inherited from class org.apache.iotdb.db.mpp.plan.expression.Expression

inputColumnIndex, isConstantOperandCache

Constructor Summary

Constructors

Constructor	Description
FunctionExpression(java.lang.String functionName)
FunctionExpression(java.lang.String functionName, java.util.LinkedHashMap<java.lang.String,java.lang.String> functionAttributes, java.util.List<Expression> expressions)
FunctionExpression(java.nio.ByteBuffer byteBuffer)

Method Summary

Modifier and Type	Method	Description
<R,C> R	accept(ExpressionVisitor<R,C> visitor, C context)	Accessible for ExpressionVisitor, use ExpressionVisitor.process(org.apache.iotdb.db.mpp.plan.expression.Expression, C) instead.
void	addAttribute(java.lang.String key, java.lang.String value)
void	addExpression(Expression expression)
void	bindInputLayerColumnIndexWithExpression(java.util.Map<java.lang.String,java.util.List<InputLocation>> inputLocations)
void	bindInputLayerColumnIndexWithExpression(UDTFPlan udtfPlan)
void	collectPaths(java.util.Set<org.apache.iotdb.commons.path.PartialPath> pathSet)
void	concat(java.util.List<org.apache.iotdb.commons.path.PartialPath> prefixPaths, java.util.List<Expression> resultExpressions)
void	constructUdfExecutors(java.util.Map<java.lang.String,UDTFExecutor> expressionName2Executor, java.time.ZoneId zoneId)
java.util.List<Expression>	getExpressions()	returns the DIRECT children expressions if it has any, otherwise an EMPTY list will be returned
java.lang.String	getExpressionStringInternal()	Sub-classes should override this method to provide valid string representation of this object.
ExpressionType	getExpressionType()
java.util.LinkedHashMap<java.lang.String,java.lang.String>	getFunctionAttributes()
java.lang.String	getFunctionName()
java.util.List<org.apache.iotdb.commons.path.PartialPath>	getPaths()
org.apache.iotdb.tsfile.file.metadata.enums.TSDataType	inferTypes(TypeProvider typeProvider)
boolean	isBuiltInAggregationFunctionExpression()
boolean	isConstantOperandInternal()	Sub-classes should override this method indicating if the expression is a constant operand
boolean	isCountStar()
boolean	isMappable(TypeProvider typeProvider)
boolean	isTimeSeriesGeneratingFunctionExpression()
boolean	isUserDefinedAggregationFunctionExpression()
void	removeWildcards(WildcardsRemover wildcardsRemover, java.util.List<Expression> resultExpressions)
protected void	serialize(java.io.DataOutputStream stream)
protected void	serialize(java.nio.ByteBuffer byteBuffer)
void	setExpressions(java.util.List<Expression> expressions)
void	updateStatisticsForMemoryAssigner(LayerMemoryAssigner memoryAssigner)

Methods inherited from class org.apache.iotdb.db.mpp.plan.expression.Expression

checkInputExpressionDataType, deserialize, equals, getExpressionString, getInputColumnIndex, hashCode, isCompareBinaryExpression, isConstantOperand, iterator, serialize, serialize, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

FunctionExpression

public FunctionExpression(java.lang.String functionName)

FunctionExpression

public FunctionExpression(java.lang.String functionName,
                          java.util.LinkedHashMap<java.lang.String,java.lang.String> functionAttributes,
                          java.util.List<Expression> expressions)

FunctionExpression

public FunctionExpression(java.nio.ByteBuffer byteBuffer)

Method Detail

accept

public <R,C> R accept(ExpressionVisitor<R,C> visitor,
                            C context)

Description copied from class: Expression

Accessible for ExpressionVisitor, use ExpressionVisitor.process(org.apache.iotdb.db.mpp.plan.expression.Expression, C) instead.

Overrides:

accept in class Expression

isBuiltInAggregationFunctionExpression

public boolean isBuiltInAggregationFunctionExpression()

Overrides:

isBuiltInAggregationFunctionExpression in class Expression

isConstantOperandInternal

public boolean isConstantOperandInternal()

Description copied from class: Expression

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

Specified by:

isConstantOperandInternal in class Expression

isTimeSeriesGeneratingFunctionExpression

public boolean isTimeSeriesGeneratingFunctionExpression()

Overrides:

isTimeSeriesGeneratingFunctionExpression in class Expression

isUserDefinedAggregationFunctionExpression

public boolean isUserDefinedAggregationFunctionExpression()

Overrides:

isUserDefinedAggregationFunctionExpression in class Expression

isCountStar

public boolean isCountStar()

addAttribute

public void addAttribute(java.lang.String key,
                         java.lang.String value)

addExpression

public void addExpression(Expression expression)

setExpressions

public void setExpressions(java.util.List<Expression> expressions)

getFunctionName

public java.lang.String getFunctionName()

getFunctionAttributes

public java.util.LinkedHashMap<java.lang.String,java.lang.String> getFunctionAttributes()

getExpressions

public java.util.List<Expression> getExpressions()

Description copied from class: Expression

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

Specified by:

getExpressions in class Expression

concat

public void concat(java.util.List<org.apache.iotdb.commons.path.PartialPath> prefixPaths,
                   java.util.List<Expression> resultExpressions)

Specified by:

concat in class Expression

removeWildcards

public void removeWildcards(WildcardsRemover wildcardsRemover,
                            java.util.List<Expression> resultExpressions)
                     throws LogicalOptimizeException

Specified by:

removeWildcards in class Expression

Throws:

LogicalOptimizeException

collectPaths

public void collectPaths(java.util.Set<org.apache.iotdb.commons.path.PartialPath> pathSet)

Specified by:

collectPaths in class Expression

constructUdfExecutors

public void constructUdfExecutors(java.util.Map<java.lang.String,UDTFExecutor> expressionName2Executor,
                                  java.time.ZoneId zoneId)

Specified by:

constructUdfExecutors in class Expression

inferTypes

public org.apache.iotdb.tsfile.file.metadata.enums.TSDataType inferTypes(TypeProvider typeProvider)

Specified by:

inferTypes in class Expression

bindInputLayerColumnIndexWithExpression

public void bindInputLayerColumnIndexWithExpression(UDTFPlan udtfPlan)

Specified by:

bindInputLayerColumnIndexWithExpression in class Expression

bindInputLayerColumnIndexWithExpression

public void bindInputLayerColumnIndexWithExpression(java.util.Map<java.lang.String,java.util.List<InputLocation>> inputLocations)

Specified by:

bindInputLayerColumnIndexWithExpression in class Expression

updateStatisticsForMemoryAssigner

public void updateStatisticsForMemoryAssigner(LayerMemoryAssigner memoryAssigner)

Specified by:

updateStatisticsForMemoryAssigner in class Expression

isMappable

public boolean isMappable(TypeProvider typeProvider)

Specified by:

isMappable in class Expression

getPaths

public java.util.List<org.apache.iotdb.commons.path.PartialPath> getPaths()

getExpressionStringInternal

public java.lang.String getExpressionStringInternal()

Description copied from class: Expression

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

Specified by:

getExpressionStringInternal in class Expression

getExpressionType

public ExpressionType getExpressionType()

Specified by:

getExpressionType in class Expression

serialize

protected void serialize(java.nio.ByteBuffer byteBuffer)

Specified by:

serialize in class Expression

serialize

protected void serialize(java.io.DataOutputStream stream)
                  throws java.io.IOException

Specified by:

serialize in class Expression

Throws:

java.io.IOException