Package com.yahoo.searchlib.expression

Class NullResultNode

java.lang.Object
com.yahoo.vespa.objects.Selectable
com.yahoo.vespa.objects.Identifiable
com.yahoo.searchlib.expression.ResultNode
com.yahoo.searchlib.expression.NullResultNode
All Implemented Interfaces:
Cloneable, Comparable<ResultNode>
public class NullResultNode extends ResultNode
This result holds nothing.
Author:
baldersheim, Simon Thoresen Hult

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    static final int
    classId
     

  • Constructor Summary

    Constructors
    Constructor
    Description
    NullResultNode()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    double
    getFloat()
    Returns the float representation of this result.
    long
    getInteger()
    Returns the integer representation of this result.
    byte[]
    getRaw()
    Returns the raw byte array representation of this result.
    String
    getString()
    Returns the string representation of this result.
    protected int
    onCmp(ResultNode rhs)
    This method must be implemented by all subclasses of this to allow ordering of results.
    protected int
    onGetClassId()
     
    void
    set(ResultNode rhs)
    This method must be implemented by all subclasses of this to allow new results to be calculated.
    void
    visitMembers(com.yahoo.vespa.objects.ObjectVisitor visitor)
     

    Methods inherited from class com.yahoo.searchlib.expression.ResultNode

    compareTo, equals, negate

    Methods inherited from class com.yahoo.vespa.objects.Identifiable

    clone, create, createFromId, deserialize, deserializeOptional, deserializeWithId, equals, getClassId, getRawUtf8Bytes, getUtf8, hashCode, onDeserialize, onSerialize, putUtf8, registerClass, serialize, serializeOptional, serializeWithId, toString

    Methods inherited from class com.yahoo.vespa.objects.Selectable

    select, select, selectMembers

    Methods inherited from class java.lang.Object

    finalize, getClass, notify, notifyAll, wait, wait, wait

  • Field Details

    • classId

      public static final int classId

  • Constructor Details

    • NullResultNode

      public NullResultNode()

  • Method Details

    • onGetClassId

      protected int onGetClassId()
      Overrides:
      onGetClassId in class ResultNode

    • getInteger

      public long getInteger()
      Description copied from class: ResultNode
      Returns the integer representation of this result.
      Specified by:
      getInteger in class ResultNode
      Returns:
      The value of this.

    • getFloat

      public double getFloat()
      Description copied from class: ResultNode
      Returns the float representation of this result.
      Specified by:
      getFloat in class ResultNode
      Returns:
      The value of this.

    • getString

      public String getString()
      Description copied from class: ResultNode
      Returns the string representation of this result.
      Specified by:
      getString in class ResultNode
      Returns:
      The value of this.

    • getRaw

      public byte[] getRaw()
      Description copied from class: ResultNode
      Returns the raw byte array representation of this result.
      Specified by:
      getRaw in class ResultNode
      Returns:
      The value of this.

    • onCmp

      protected int onCmp(ResultNode rhs)
      Description copied from class: ResultNode
      This method must be implemented by all subclasses of this to allow ordering of results. This method is used by the Cloneable implementation.
      Specified by:
      onCmp in class ResultNode
      Parameters:
      rhs - The other node to compare with.
      Returns:
      Comparable result.

    • visitMembers

      public void visitMembers(com.yahoo.vespa.objects.ObjectVisitor visitor)
      Overrides:
      visitMembers in class com.yahoo.vespa.objects.Identifiable

    • set

      public void set(ResultNode rhs)
      Description copied from class: ResultNode
      This method must be implemented by all subclasses of this to allow new results to be calculated.
      Specified by:
      set in class ResultNode
      Parameters:
      rhs - The node to get the result from.