org.apache.calcite.adapter.csv

类 CsvTableScan

java.lang.Object

org.apache.calcite.rel.AbstractRelNode

org.apache.calcite.rel.core.TableScan

org.apache.calcite.adapter.csv.CsvTableScan

所有已实现的接口:

Cloneable, org.apache.calcite.adapter.enumerable.EnumerableRel, org.apache.calcite.plan.RelOptNode, org.apache.calcite.rel.hint.Hintable, org.apache.calcite.rel.RelNode

public class CsvTableScan
extends org.apache.calcite.rel.core.TableScan
implements org.apache.calcite.adapter.enumerable.EnumerableRel

Relational expression representing a scan of a CSV file.

Like any table scan, it serves as a leaf node of a query tree.

嵌套类概要

从接口继承的嵌套类/接口 org.apache.calcite.adapter.enumerable.EnumerableRel

org.apache.calcite.adapter.enumerable.EnumerableRel.Prefer, org.apache.calcite.adapter.enumerable.EnumerableRel.Result

从接口继承的嵌套类/接口 org.apache.calcite.rel.RelNode

org.apache.calcite.rel.RelNode.Context

字段概要

从类继承的字段 org.apache.calcite.rel.core.TableScan

hints, table

从类继承的字段 org.apache.calcite.rel.AbstractRelNode

digest, id, rowType, traitSet

构造器概要

构造器

限定符	构造器和说明
protected	CsvTableScan(org.apache.calcite.plan.RelOptCluster cluster, org.apache.calcite.plan.RelOptTable table, CsvTranslatableTable csvTable, int[] fields)

方法概要

限定符和类型	方法和说明
org.apache.calcite.plan.RelOptCost	computeSelfCost(org.apache.calcite.plan.RelOptPlanner planner, org.apache.calcite.rel.metadata.RelMetadataQuery mq)
org.apache.calcite.rel.RelNode	copy(org.apache.calcite.plan.RelTraitSet traitSet, List<org.apache.calcite.rel.RelNode> inputs)
org.apache.calcite.rel.type.RelDataType	deriveRowType()
org.apache.calcite.rel.RelWriter	explainTerms(org.apache.calcite.rel.RelWriter pw)
org.apache.calcite.adapter.enumerable.EnumerableRel.Result	implement(org.apache.calcite.adapter.enumerable.EnumerableRelImplementor implementor, org.apache.calcite.adapter.enumerable.EnumerableRel.Prefer pref)
void	register(org.apache.calcite.plan.RelOptPlanner planner)

从类继承的方法 org.apache.calcite.rel.core.TableScan

accept, estimateRowCount, getCollationList, getHints, getTable, identity, identity, project

从类继承的方法 org.apache.calcite.rel.AbstractRelNode

accept, childrenAccept, collectVariablesSet, collectVariablesUsed, computeDigest, computeSelfCost, equals, explain, getChildExps, getCluster, getConvention, getCorrelVariable, getDescription, getDigest, getExpectedInputRowType, getId, getInput, getInputs, getQuery, getRelTypeName, getRows, getRowType, getTraitSet, getVariablesSet, getVariablesStopped, hashCode, isDistinct, isKey, isValid, isValid, metadata, onRegister, recomputeDigest, replaceInput, sole, toString

从类继承的方法 java.lang.Object

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

从接口继承的方法 org.apache.calcite.rel.RelNode

accept, accept, childrenAccept, collectVariablesSet, collectVariablesUsed, computeSelfCost, estimateRowCount, explain, getChildExps, getCollationList, getConvention, getCorrelVariable, getExpectedInputRowType, getInput, getInputs, getQuery, getRelTypeName, getRows, getRowType, getTable, getVariablesSet, getVariablesStopped, isDistinct, isKey, isValid, isValid, metadata, onRegister, recomputeDigest, replaceInput

从接口继承的方法 org.apache.calcite.plan.RelOptNode

getCluster, getDescription, getDigest, getId, getTraitSet

从接口继承的方法 org.apache.calcite.rel.hint.Hintable

attachHints, withHints

构造器详细资料

CsvTableScan

protected CsvTableScan(org.apache.calcite.plan.RelOptCluster cluster,
                       org.apache.calcite.plan.RelOptTable table,
                       CsvTranslatableTable csvTable,
                       int[] fields)

方法详细资料

copy

public org.apache.calcite.rel.RelNode copy(org.apache.calcite.plan.RelTraitSet traitSet,
                                           List<org.apache.calcite.rel.RelNode> inputs)

指定者:

copy 在接口中 org.apache.calcite.rel.RelNode

覆盖:

copy 在类中 org.apache.calcite.rel.AbstractRelNode

explainTerms

public org.apache.calcite.rel.RelWriter explainTerms(org.apache.calcite.rel.RelWriter pw)

覆盖:

explainTerms 在类中 org.apache.calcite.rel.core.TableScan

deriveRowType

public org.apache.calcite.rel.type.RelDataType deriveRowType()

覆盖:

deriveRowType 在类中 org.apache.calcite.rel.core.TableScan

register

public void register(org.apache.calcite.plan.RelOptPlanner planner)

指定者:

register 在接口中 org.apache.calcite.rel.RelNode

覆盖:

register 在类中 org.apache.calcite.rel.AbstractRelNode

computeSelfCost

public org.apache.calcite.plan.RelOptCost computeSelfCost(org.apache.calcite.plan.RelOptPlanner planner,
                                                          org.apache.calcite.rel.metadata.RelMetadataQuery mq)

指定者:

computeSelfCost 在接口中 org.apache.calcite.rel.RelNode

覆盖:

computeSelfCost 在类中 org.apache.calcite.rel.core.TableScan

implement

public org.apache.calcite.adapter.enumerable.EnumerableRel.Result implement(org.apache.calcite.adapter.enumerable.EnumerableRelImplementor implementor,
                                                                            org.apache.calcite.adapter.enumerable.EnumerableRel.Prefer pref)

指定者:

implement 在接口中 org.apache.calcite.adapter.enumerable.EnumerableRel