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

Class ConstantOperand

java.lang.Object

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

org.apache.iotdb.db.mpp.plan.expression.leaf.LeafOperand

org.apache.iotdb.db.mpp.plan.expression.leaf.ConstantOperand

public class ConstantOperand
extends LeafOperand

Constant operand

Field Summary

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

inputColumnIndex, isConstantOperandCache

Constructor Summary

Constructors

Constructor	Description
ConstantOperand(java.nio.ByteBuffer byteBuffer)
ConstantOperand(org.apache.iotdb.tsfile.file.metadata.enums.TSDataType dataType, java.lang.String valueString)

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)
org.apache.iotdb.tsfile.file.metadata.enums.TSDataType	getDataType()
java.lang.String	getExpressionStringInternal()	Sub-classes should override this method to provide valid string representation of this object.
ExpressionType	getExpressionType()
java.lang.String	getValueString()
org.apache.iotdb.tsfile.file.metadata.enums.TSDataType	inferTypes(TypeProvider typeProvider)
boolean	isConstantOperandInternal()	Sub-classes should override this method indicating if the expression is a constant operand
boolean	isNegativeNumber()
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.leaf.LeafOperand

constructUdfExecutors, getExpressions, isMappable

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

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

Methods inherited from class java.lang.Object

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

Constructor Detail

ConstantOperand

public ConstantOperand(org.apache.iotdb.tsfile.file.metadata.enums.TSDataType dataType,
                       java.lang.String valueString)

ConstantOperand

public ConstantOperand(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

getDataType

public org.apache.iotdb.tsfile.file.metadata.enums.TSDataType getDataType()

getValueString

public java.lang.String getValueString()

isNegativeNumber

public boolean isNegativeNumber()

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

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)

Specified by:

removeWildcards in class Expression

collectPaths

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

Specified by:

collectPaths 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

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