org.apache.calcite.adapter.pig

类 PigToEnumerableConverter

java.lang.Object

org.apache.calcite.rel.AbstractRelNode

org.apache.calcite.rel.SingleRel

org.apache.calcite.rel.convert.ConverterImpl

org.apache.calcite.adapter.pig.PigToEnumerableConverter

所有已实现的接口:

Cloneable, org.apache.calcite.adapter.enumerable.EnumerableRel, org.apache.calcite.plan.RelOptNode, org.apache.calcite.rel.convert.Converter, org.apache.calcite.rel.PhysicalNode, org.apache.calcite.rel.RelNode

public class PigToEnumerableConverter
extends org.apache.calcite.rel.convert.ConverterImpl
implements org.apache.calcite.adapter.enumerable.EnumerableRel

Relational expression representing a scan of a table in a Pig data source.

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.convert.ConverterImpl

inTraits, traitDef

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

input

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	PigToEnumerableConverter(org.apache.calcite.plan.RelOptCluster cluster, org.apache.calcite.plan.RelTraitSet traits, org.apache.calcite.rel.RelNode input) Creates a PigToEnumerableConverter.

方法概要

限定符和类型	方法和说明
org.apache.calcite.rel.RelNode	copy(org.apache.calcite.plan.RelTraitSet traitSet, List<org.apache.calcite.rel.RelNode> inputs)
org.apache.calcite.adapter.enumerable.EnumerableRel.Result	implement(org.apache.calcite.adapter.enumerable.EnumerableRelImplementor implementor, org.apache.calcite.adapter.enumerable.EnumerableRel.Prefer pref) This implementation does not actually execute the associated Pig Latin script and return results.

从类继承的方法 org.apache.calcite.rel.convert.ConverterImpl

cannotImplement, computeSelfCost, getInputTraits, getTraitDef

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

childrenAccept, deriveRowType, estimateRowCount, explainTerms, getInput, getInputs, replaceInput

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

accept, accept, collectVariablesSet, collectVariablesUsed, deepEquals, deepHashCode, equals, explain, getCluster, getConvention, getCorrelVariable, getDescription, getDigest, getExpectedInputRowType, getId, getInput, getRelDigest, getRelTypeName, getRowType, getTable, getTraitSet, getVariablesSet, hashCode, isEnforcer, isValid, metadata, onRegister, recomputeDigest, register, 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.adapter.enumerable.EnumerableRel

deriveTraits, getDeriveMode, passThroughTraits

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

derive, derive, passThrough

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

accept, accept, childrenAccept, collectVariablesSet, collectVariablesUsed, computeSelfCost, deepEquals, deepHashCode, estimateRowCount, explain, explain, fieldIsNullable, getConvention, getCorrelVariable, getDigest, getExpectedInputRowType, getInput, getInputs, getRelDigest, getRelTypeName, getRowType, getTable, getVariablesSet, isEnforcer, isValid, metadata, onRegister, recomputeDigest, register, replaceInput, stripped

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

getCluster, getDescription, getId, getTraitSet

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

getInput

构造器详细资料

PigToEnumerableConverter

protected PigToEnumerableConverter(org.apache.calcite.plan.RelOptCluster cluster,
                                   org.apache.calcite.plan.RelTraitSet traits,
                                   org.apache.calcite.rel.RelNode input)

Creates a PigToEnumerableConverter.

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

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)

This implementation does not actually execute the associated Pig Latin script and return results. Instead it returns an empty EnumerableRel.Result in order to allow for testing and verification of every step of query processing up to actual physical execution and result verification.

Next step is to invoke Pig from here, likely in local mode, have it store results in a predefined file so they can be read here and returned as a Result object.

指定者:

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