com.google.spanner.v1

Interface PlanNode.ChildLinkOrBuilder

All Superinterfaces:

MessageLiteOrBuilder, MessageOrBuilder

All Known Implementing Classes:

PlanNode.ChildLink, PlanNode.ChildLink.Builder

Enclosing class:

PlanNode

public static interface PlanNode.ChildLinkOrBuilder
extends MessageOrBuilder

Method Summary

Modifier and Type	Method and Description
int	getChildIndex() The node to which the link points.
java.lang.String	getType() The type of the link.
ByteString	getTypeBytes() The type of the link.
java.lang.String	getVariable() Only present if the child node is [SCALAR][google.spanner.v1.PlanNode.Kind.SCALAR] and corresponds to an output variable of the parent node.
ByteString	getVariableBytes() Only present if the child node is [SCALAR][google.spanner.v1.PlanNode.Kind.SCALAR] and corresponds to an output variable of the parent node.

Methods inherited from interface com.google.protobuf.MessageOrBuilder

findInitializationErrors, getAllFields, getDefaultInstanceForType, getDescriptorForType, getField, getInitializationErrorString, getOneofFieldDescriptor, getRepeatedField, getRepeatedFieldCount, getUnknownFields, hasField, hasOneof

Methods inherited from interface com.google.protobuf.MessageLiteOrBuilder

isInitialized

Method Detail

getChildIndex

int getChildIndex()

 The node to which the link points.
 

int32 child_index = 1;

getType

java.lang.String getType()

 The type of the link. For example, in Hash Joins this could be used to
 distinguish between the build child and the probe child, or in the case
 of the child being an output variable, to represent the tag associated
 with the output variable.
 

string type = 2;

getTypeBytes

ByteString getTypeBytes()

 The type of the link. For example, in Hash Joins this could be used to
 distinguish between the build child and the probe child, or in the case
 of the child being an output variable, to represent the tag associated
 with the output variable.
 

string type = 2;

getVariable

java.lang.String getVariable()

 Only present if the child node is [SCALAR][google.spanner.v1.PlanNode.Kind.SCALAR] and corresponds
 to an output variable of the parent node. The field carries the name of
 the output variable.
 For example, a `TableScan` operator that reads rows from a table will
 have child links to the `SCALAR` nodes representing the output variables
 created for each column that is read by the operator. The corresponding
 `variable` fields will be set to the variable names assigned to the
 columns.
 

string variable = 3;

getVariableBytes

ByteString getVariableBytes()

 Only present if the child node is [SCALAR][google.spanner.v1.PlanNode.Kind.SCALAR] and corresponds
 to an output variable of the parent node. The field carries the name of
 the output variable.
 For example, a `TableScan` operator that reads rows from a table will
 have child links to the `SCALAR` nodes representing the output variables
 created for each column that is read by the operator. The corresponding
 `variable` fields will be set to the variable names assigned to the
 columns.
 

string variable = 3;