Class BinaryOrderableWrapper

  • All Implemented Interfaces:
    java.io.Externalizable, java.io.Serializable, Formatable, Storable, TypedFormat

    class BinaryOrderableWrapper
    extends java.lang.Object
    implements Storable
    The BinaryOrderableWrapper is a wrapper class which intercepts the readExternal() callback made by raw store during a fetch, and does a comparison instead.
    • Constructor Detail

      • BinaryOrderableWrapper

        BinaryOrderableWrapper()
    • Method Detail

      • init

        protected void init​(BinaryOrderable ref_object,
                            BinaryOrderable other_object)
        Short one line description of routine.

        Longer descrption of routine.

        Parameters:
        ref_object - The object that this object is wrapping (ie. being read from disk)
        other_object - The object to compare ref_object to.
      • getCmpResult

        public int getCmpResult()
        Short one line description of routine.

        Longer descrption of routine.

        Returns:
        The identifier to be used to open the conglomerate later.
      • getTypeFormatId

        public int getTypeFormatId()
        Description copied from interface: TypedFormat
        Get a universally unique identifier for the type of this object.
        Specified by:
        getTypeFormatId in interface TypedFormat
        Returns:
        The identifier. (A UUID stuffed in an array of 16 bytes).
      • isNull

        public boolean isNull()
        Return whether the value is null or not. The containerid being zero is what determines nullness; subclasses are not expected to override this method.
        Specified by:
        isNull in interface Storable
        Returns:
        true if the value is null and false otherwise.
        See Also:
        Storable.isNull()
      • restoreToNull

        public void restoreToNull()
        Restore the in-memory representation to the null value. The containerid being zero is what determines nullness; subclasses are not expected to override this method.
        Specified by:
        restoreToNull in interface Storable
        See Also:
        Storable.restoreToNull()
      • readExternal

        public void readExternal​(java.io.ObjectInput in)
                          throws java.io.IOException,
                                 java.lang.ClassNotFoundException
        Restore the in-memory representation from the stream.
        Specified by:
        readExternal in interface java.io.Externalizable
        Throws:
        java.lang.ClassNotFoundException - Thrown if the stored representation is serialized and a class named in the stream could not be found.
        java.io.IOException - thrown by readObject()
        See Also:
        Externalizable.readExternal(java.io.ObjectInput)
      • readExternalFromArray

        public void readExternalFromArray​(ArrayInputStream in)
                                   throws java.io.IOException,
                                          java.lang.ClassNotFoundException
        Throws:
        java.io.IOException
        java.lang.ClassNotFoundException
      • writeExternal

        public void writeExternal​(java.io.ObjectOutput out)
                           throws java.io.IOException
        Store the stored representation of the column value in the stream.

        A BinaryOrderableWrapper is never used to store data out, only to read data from disk and compare it to another byte stream.

        Specified by:
        writeExternal in interface java.io.Externalizable
        Parameters:
        out - Stream to write the object to.
        Throws:
        java.io.IOException - thrown by writeObject()