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

Class UnaryExpression

java.lang.Object

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

org.apache.iotdb.db.mpp.plan.expression.unary.UnaryExpression

Direct Known Subclasses:

InExpression, IsNullExpression, LikeExpression, LogicNotExpression, NegationExpression, RegularExpression

public abstract class UnaryExpression
extends Expression

Field Summary

Fields

Modifier and Type	Field	Description
protected Expression	expression

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

inputColumnIndex, isConstantOperandCache

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	UnaryExpression(Expression expression)

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	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)
protected abstract Expression	constructExpression(Expression childExpression)
void	constructUdfExecutors(java.util.Map<java.lang.String,UDTFExecutor> expressionName2Executor, java.time.ZoneId zoneId)
Expression	getExpression()
java.util.List<Expression>	getExpressions()	returns the DIRECT children expressions if it has any, otherwise an EMPTY list will be returned
boolean	isConstantOperandInternal()	Sub-classes should override this method indicating if the expression is a constant operand
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	updateStatisticsForMemoryAssigner(LayerMemoryAssigner memoryAssigner)

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

checkInputExpressionDataType, deserialize, equals, getExpressionString, getExpressionStringInternal, getExpressionType, getInputColumnIndex, hashCode, inferTypes, isBuiltInAggregationFunctionExpression, isCompareBinaryExpression, isConstantOperand, iterator, serialize, serialize, toString

Methods inherited from class java.lang.Object

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

Field Detail

expression

protected final Expression expression

Constructor Detail

UnaryExpression

protected UnaryExpression(Expression expression)

Method Detail

getExpression

public final Expression getExpression()

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

isConstantOperandInternal

public final 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

getExpressions

public final 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

isTimeSeriesGeneratingFunctionExpression

public final boolean isTimeSeriesGeneratingFunctionExpression()

Overrides:

isTimeSeriesGeneratingFunctionExpression in class Expression

isUserDefinedAggregationFunctionExpression

public final boolean isUserDefinedAggregationFunctionExpression()

Overrides:

isUserDefinedAggregationFunctionExpression in class Expression

collectPaths

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

Specified by:

collectPaths in class Expression

constructUdfExecutors

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

Specified by:

constructUdfExecutors in class Expression

bindInputLayerColumnIndexWithExpression

public final void bindInputLayerColumnIndexWithExpression(UDTFPlan udtfPlan)

Specified by:

bindInputLayerColumnIndexWithExpression in class Expression

bindInputLayerColumnIndexWithExpression

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

Specified by:

bindInputLayerColumnIndexWithExpression in class Expression

updateStatisticsForMemoryAssigner

public final void updateStatisticsForMemoryAssigner(LayerMemoryAssigner memoryAssigner)

Specified by:

updateStatisticsForMemoryAssigner in class Expression

isMappable

public boolean isMappable(TypeProvider typeProvider)

Specified by:

isMappable in class Expression

concat

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

Specified by:

removeWildcards in class Expression

Throws:

LogicalOptimizeException

constructExpression

protected abstract Expression constructExpression(Expression childExpression)

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