Package com.google.spanner.v1

Interface PlanNode.ChildLinkOrBuilder

All Superinterfaces:
com.google.protobuf.MessageLiteOrBuilder, com.google.protobuf.MessageOrBuilder
All Known Implementing Classes:
PlanNode.ChildLink, PlanNode.ChildLink.Builder
Enclosing class:
PlanNode
public static interface PlanNode.ChildLinkOrBuilder extends com.google.protobuf.MessageOrBuilder

  • Method Summary

    Modifier and Type
    Method
    Description
    int
    getChildIndex()
    The node to which the link points.
    String
    getType()
    The type of the link.
    com.google.protobuf.ByteString
    getTypeBytes()
    The type of the link.
    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.
    com.google.protobuf.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.MessageLiteOrBuilder

    isInitialized

    Methods inherited from interface com.google.protobuf.MessageOrBuilder

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

  • Method Details

    • getChildIndex

      int getChildIndex()
       The node to which the link points.
      int32 child_index = 1;
      Returns:
      The childIndex.

    • getType

      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:
      The type.

    • getTypeBytes

      com.google.protobuf.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:
      The bytes for type.

    • getVariable

      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;
      Returns:
      The variable.

    • getVariableBytes

      com.google.protobuf.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;
      Returns:
      The bytes for variable.