Package org.apache.calcite.rel.externalize

Class RelJsonReader

java.lang.Object

org.apache.calcite.rel.externalize.RelJsonReader

public class RelJsonReader
extends java.lang.Object

Reads a JSON plan and converts it back to a tree of relational expressions.

See Also:

RelInput

Field Summary

Fields

Modifier and Type	Field	Description
private RelOptCluster	cluster
private RelNode	lastRel
private RelJson	relJson
private java.util.Map<java.lang.String,RelNode>	relMap
private RelOptSchema	relOptSchema
private static com.fasterxml.jackson.core.type.TypeReference<java.util.LinkedHashMap<java.lang.String,java.lang.Object>>	TYPE_REF

Constructor Summary

Constructors

Constructor	Description
RelJsonReader(RelOptCluster cluster, RelOptSchema relOptSchema, Schema schema)

Method Summary

Modifier and Type	Method	Description
private RelNode	lookupInput(java.lang.String jsonInput)
RelNode	read(java.lang.String s)
private void	readRel(java.util.Map<java.lang.String,java.lang.Object> jsonRel)
private void	readRels(java.util.List<java.util.Map<java.lang.String,java.lang.Object>> jsonRels)
private AggregateCall	toAggCall(java.util.Map<java.lang.String,java.lang.Object> jsonAggCall)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

TYPE_REF

private static final com.fasterxml.jackson.core.type.TypeReference<java.util.LinkedHashMap<java.lang.String,java.lang.Object>> TYPE_REF

cluster

private final RelOptCluster cluster

relOptSchema

private final RelOptSchema relOptSchema

relJson

private final RelJson relJson

relMap

private final java.util.Map<java.lang.String,RelNode> relMap

lastRel

private RelNode lastRel

Constructor Detail

RelJsonReader

public RelJsonReader(RelOptCluster cluster,
                     RelOptSchema relOptSchema,
                     Schema schema)

Method Detail

read

public RelNode read(java.lang.String s)
             throws java.io.IOException

Throws:

java.io.IOException

readRels

private void readRels(java.util.List<java.util.Map<java.lang.String,java.lang.Object>> jsonRels)

readRel

private void readRel(java.util.Map<java.lang.String,java.lang.Object> jsonRel)

toAggCall

private AggregateCall toAggCall(java.util.Map<java.lang.String,java.lang.Object> jsonAggCall)

lookupInput

private RelNode lookupInput(java.lang.String jsonInput)