Package org.apache.iotdb.db.qp.logical.crud

Class BasicFunctionOperator

java.lang.Object

org.apache.iotdb.db.qp.logical.crud.FilterOperator

org.apache.iotdb.db.qp.logical.crud.FunctionOperator

org.apache.iotdb.db.qp.logical.crud.BasicFunctionOperator

All Implemented Interfaces:

java.lang.Comparable<FilterOperator>

public class BasicFunctionOperator
extends FunctionOperator

basic operator includes = < > >= <= !=.

Field Summary

Fields

Modifier and Type	Field	Description
protected java.lang.String	value

Fields inherited from class org.apache.iotdb.db.qp.logical.crud.FilterOperator

filterType, isLeaf

Constructor Summary

Constructors

Constructor	Description
BasicFunctionOperator(FilterConstant.FilterType filterType, org.apache.iotdb.commons.path.PartialPath path, java.lang.String value)	BasicFunctionOperator Constructor.

Method Summary

Modifier and Type	Method	Description
BasicFunctionOperator	copy()
boolean	equals(java.lang.Object o)
java.lang.String	getValue()
int	hashCode()
void	reverseFunc()	reverse func.
java.lang.String	showTree(int spaceNum)
java.lang.String	toString()
protected org.apache.iotdb.tsfile.utils.Pair<org.apache.iotdb.tsfile.read.expression.IUnaryExpression,java.lang.String>	transformToSingleQueryFilter(java.util.Map<org.apache.iotdb.commons.path.PartialPath,org.apache.iotdb.tsfile.file.metadata.enums.TSDataType> pathTSDataTypeHashMap)	it will be used in BasicFunction Operator.

Methods inherited from class org.apache.iotdb.db.qp.logical.crud.FunctionOperator

addChildOperator

Methods inherited from class org.apache.iotdb.db.qp.logical.crud.FilterOperator

compareTo, getChildren, getFilterName, getFilterSymbol, getFilterType, getPathSet, getSinglePath, isLeaf, isSingle, setChildren, setFilterType, setIsSingle, setPathSet, setSinglePath, showTree, transformToExpression

Methods inherited from class java.lang.Object

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

Field Detail

value

protected java.lang.String value

Constructor Detail

BasicFunctionOperator

public BasicFunctionOperator(FilterConstant.FilterType filterType,
                             org.apache.iotdb.commons.path.PartialPath path,
                             java.lang.String value)
                      throws SQLParserException

BasicFunctionOperator Constructor.

Parameters:

filterType - filter Type

path - path

value - value

Throws:

LogicalOperatorException - Logical Operator Exception

SQLParserException

Method Detail

getValue

public java.lang.String getValue()

reverseFunc

public void reverseFunc()

Description copied from class: FunctionOperator

reverse func.

Overrides:

reverseFunc in class FunctionOperator

transformToSingleQueryFilter

protected org.apache.iotdb.tsfile.utils.Pair<org.apache.iotdb.tsfile.read.expression.IUnaryExpression,java.lang.String> transformToSingleQueryFilter(java.util.Map<org.apache.iotdb.commons.path.PartialPath,org.apache.iotdb.tsfile.file.metadata.enums.TSDataType> pathTSDataTypeHashMap)
                                                                                                                                                    throws LogicalOperatorException,
                                                                                                                                                           org.apache.iotdb.commons.exception.MetadataException

Description copied from class: FilterOperator

it will be used in BasicFunction Operator.

Overrides:

transformToSingleQueryFilter in class FilterOperator

Returns:

- pair.left: UnaryQueryFilter constructed by its one child; pair.right: Path represented by this child.

Throws:

org.apache.iotdb.commons.exception.MetadataException - exception in filter transforming

LogicalOperatorException

showTree

public java.lang.String showTree(int spaceNum)

Overrides:

showTree in class FilterOperator

copy

public BasicFunctionOperator copy()

Overrides:

copy in class FilterOperator

toString

public java.lang.String toString()

Overrides:

toString in class FilterOperator

equals

public boolean equals(java.lang.Object o)

Overrides:

equals in class FilterOperator

hashCode

public int hashCode()

Overrides:

hashCode in class FilterOperator