Class RowEvaluator.Decoder

  • Enclosing class:
    RowEvaluator

    public abstract static class RowEvaluator.Decoder
    extends java.lang.Object
    Interface for an object that can turn a string into a cell content object.
    • Constructor Summary

      Constructors 
      Constructor Description
      Decoder​(java.lang.Class<?> clazz)
      Constructor.
    • Method Summary

      All Methods Instance Methods Abstract Methods Concrete Methods 
      Modifier and Type Method Description
      ColumnInfo createColumnInfo​(java.lang.String name)
      Returns a new ColumnInfo suitable for the decoded values.
      abstract java.lang.Object decode​(java.lang.String value)
      Decodes a value.
      abstract boolean isValid​(java.lang.String value)
      Indicates whether this decoder is capable of decoding a given string.
      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    • Constructor Detail

      • Decoder

        public Decoder​(java.lang.Class<?> clazz)
        Constructor.
        Parameters:
        clazz - class of object to be returned by decode method
    • Method Detail

      • createColumnInfo

        public ColumnInfo createColumnInfo​(java.lang.String name)
        Returns a new ColumnInfo suitable for the decoded values.
        Parameters:
        name - column name
        Returns:
        new metadata object
      • decode

        public abstract java.lang.Object decode​(java.lang.String value)
        Decodes a value. Will complete without exception if isValid(java.lang.String) returns true for the presented value; otherwise may throw an unchecked exception.
        Parameters:
        value - string to decode
        Returns:
        typed object corresponding to value
      • isValid

        public abstract boolean isValid​(java.lang.String value)
        Indicates whether this decoder is capable of decoding a given string.
        Parameters:
        value - string to decode
        Returns:
        true iff this decoder can make sense of the string