org.apache.calcite.rel.logical

类 LogicalSnapshot

java.lang.Object

org.apache.calcite.rel.AbstractRelNode

org.apache.calcite.rel.SingleRel

org.apache.calcite.rel.core.Snapshot

org.apache.calcite.rel.logical.LogicalSnapshot

所有已实现的接口:

Cloneable, org.apache.calcite.plan.RelOptNode, org.apache.calcite.rel.RelNode

public class LogicalSnapshot
extends org.apache.calcite.rel.core.Snapshot

Sub-class of Snapshot not targeted at any particular engine or calling convention. The class was copied over because of * CALCITE-4554. *

Line 80 ~ 91: Calcite only supports timestamp type as period type, but Flink supports both Timestamp and TimestampLtz. Should be removed once calcite support TimestampLtz as period type.

嵌套类概要

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.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

构造器和说明
LogicalSnapshot(org.apache.calcite.plan.RelOptCluster cluster, org.apache.calcite.plan.RelTraitSet traitSet, org.apache.calcite.rel.RelNode input, org.apache.calcite.rex.RexNode period) Creates a LogicalSnapshot.

方法概要

限定符和类型	方法和说明
org.apache.calcite.rel.core.Snapshot	copy(org.apache.calcite.plan.RelTraitSet traitSet, org.apache.calcite.rel.RelNode input, org.apache.calcite.rex.RexNode period)
static LogicalSnapshot	create(org.apache.calcite.rel.RelNode input, org.apache.calcite.rex.RexNode period) Creates a LogicalSnapshot.
boolean	isValid(org.apache.calcite.util.Litmus litmus, org.apache.calcite.rel.RelNode.Context context)

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

accept, copy, explainTerms, getPeriod

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

childrenAccept, deriveRowType, estimateRowCount, getInput, getInputs, replaceInput

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

accept, collectVariablesSet, collectVariablesUsed, computeSelfCost, deepEquals, deepHashCode, equals, explain, getCluster, getConvention, getCorrelVariable, getDescription, getDigest, getExpectedInputRowType, getId, getInput, getRelDigest, getRelTypeName, getRowType, getTable, getTraitSet, getVariablesSet, hashCode, isEnforcer, 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.rel.RelNode

explain

构造器详细资料

LogicalSnapshot

public LogicalSnapshot(org.apache.calcite.plan.RelOptCluster cluster,
                       org.apache.calcite.plan.RelTraitSet traitSet,
                       org.apache.calcite.rel.RelNode input,
                       org.apache.calcite.rex.RexNode period)

Creates a LogicalSnapshot.

Use create(org.apache.calcite.rel.RelNode, org.apache.calcite.rex.RexNode) unless you know what you're doing.

参数:

cluster - Cluster that this relational expression belongs to

traitSet - The traits of this relational expression

input - Input relational expression

period - Timestamp expression which as the table was at the given time in the past

方法详细资料

copy

public org.apache.calcite.rel.core.Snapshot copy(org.apache.calcite.plan.RelTraitSet traitSet,
                                                 org.apache.calcite.rel.RelNode input,
                                                 org.apache.calcite.rex.RexNode period)

指定者:

copy 在类中 org.apache.calcite.rel.core.Snapshot

create

public static LogicalSnapshot create(org.apache.calcite.rel.RelNode input,
                                     org.apache.calcite.rex.RexNode period)

Creates a LogicalSnapshot.

isValid

public boolean isValid(org.apache.calcite.util.Litmus litmus,
                       org.apache.calcite.rel.RelNode.Context context)

指定者:

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

覆盖:

isValid 在类中 org.apache.calcite.rel.core.Snapshot