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

      All Methods Instance Methods Abstract Methods 
      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 Detail

      • 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.