Class DataTypeInstance


  • public class DataTypeInstance
    extends java.lang.Object
    An instance of a DataType that is applicable for a given context. Most dataTypes are not context sensitive and are suitable for use anywhere. Others like dynamic structures need to create an instance that wraps the data type. It helps for situations where a data type must have a length.
    • Constructor Detail

      • DataTypeInstance

        protected DataTypeInstance​(DataType dt,
                                   int length)
        Create an instance of a data type with the given length.
        Parameters:
        dt - data type
        length - fixed length of the data type
    • Method Detail

      • getDataType

        public DataType getDataType()
        Returns:
        the data type
      • getLength

        public int getLength()
        Returns:
        the fixed length of the data type
      • setLength

        public void setLength​(int length)
        Set the length of this data type instance
      • getDataTypeInstance

        public static DataTypeInstance getDataTypeInstance​(DataType dataType,
                                                           MemBuffer buf)
        Generate a data-type instance Factory and Dynamic data-types are NOT handled.
        Parameters:
        dataType -
        buf -
        Returns:
        data-type instance or null if one could not be determined
      • getDataTypeInstance

        public static DataTypeInstance getDataTypeInstance​(DataType dataType,
                                                           int length)
        Attempt to create a fixed-length data-type instance. Factory and non-sizable Dynamic data-types are NOT handled.
        Parameters:
        dataType -
        length - length for sizable Dynamic data-types, otherwise ignored
        Returns:
        data-type instance or null if unable to create instance.
      • toString

        public java.lang.String toString()
        Overrides:
        toString in class java.lang.Object
      • getDataTypeInstance

        public static DataTypeInstance getDataTypeInstance​(DataType dataType,
                                                           MemBuffer buf,
                                                           int length)
        Attempt to create a data-type instance associated with a specific memory location. Factory and Dynamic data-types are handled.
        Parameters:
        dataType -
        buf - memory location
        length - length for sizable Dynamic data-types, otherwise ignored
        Returns:
        data-type instance or null if unable to create instance.