org.apache.tajo.plan.serder

Class LogicalNodeDeserializer

java.lang.Object

org.apache.tajo.plan.serder.LogicalNodeDeserializer

public class LogicalNodeDeserializer
extends Object

It deserializes a list of serialized logical nodes into a logical node tree.

Constructor Summary

Constructors

Constructor and Description
LogicalNodeDeserializer()

Method Summary

Methods

Modifier and Type	Method and Description
static Column[]	convertColumns(List<CatalogProtos.ColumnProto> columnProtos)
static JoinType	convertJoinType(PlanProto.JoinType type)
static Schema	convertSchema(CatalogProtos.SchemaProto proto)
static SortSpec[]	convertSortSpecs(List<CatalogProtos.SortSpecProto> sortSpecProtos)
static Target[]	convertTargets(OverridableConf context, List<PlanProto.Target> targetsProto)
static LogicalNode	deserialize(OverridableConf context, PlanProto.LogicalNodeTree tree) Deserialize a list of nodes into a logical node tree.

Methods inherited from class java.lang.Object

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

Constructor Detail

LogicalNodeDeserializer

public LogicalNodeDeserializer()

Method Detail

deserialize

public static LogicalNode deserialize(OverridableConf context,
                      PlanProto.LogicalNodeTree tree)

Deserialize a list of nodes into a logical node tree.

Parameters:

context - QueryContext

tree - LogicalNodeTree which contains a list of serialized logical nodes.

Returns:

A logical node tree

convertSchema

public static Schema convertSchema(CatalogProtos.SchemaProto proto)

convertColumns

public static Column[] convertColumns(List<CatalogProtos.ColumnProto> columnProtos)

convertTargets

public static Target[] convertTargets(OverridableConf context,
                      List<PlanProto.Target> targetsProto)

convertSortSpecs

public static SortSpec[] convertSortSpecs(List<CatalogProtos.SortSpecProto> sortSpecProtos)

convertJoinType

public static JoinType convertJoinType(PlanProto.JoinType type)