public static interface PlanNode.ChildLinkOrBuilder extends MessageOrBuilder
Implements
MessageOrBuilderMethods
getChildIndex()
public abstract int getChildIndex()
The node to which the link points.
int32 child_index = 1;
Returns | |
---|---|
Type | Description |
int |
The childIndex. |
getType()
public abstract 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;
Returns | |
---|---|
Type | Description |
String |
The type. |
getTypeBytes()
public abstract 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;
Returns | |
---|---|
Type | Description |
ByteString |
The bytes for type. |
getVariable()
public abstract String getVariable()
Only present if the child node is 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;
Returns | |
---|---|
Type | Description |
String |
The variable. |
getVariableBytes()
public abstract ByteString getVariableBytes()
Only present if the child node is 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;
Returns | |
---|---|
Type | Description |
ByteString |
The bytes for variable. |