uk.co.weft.dbutil
Class IntegerColumnDescriptor

java.lang.Object
  uk.co.weft.dbutil.ColumnDescriptor
      uk.co.weft.dbutil.IntegerColumnDescriptor

public class IntegerColumnDescriptor

extends ColumnDescriptor

A descriptor for an integer column

Version:

$Revision: 1.13.4.1 $ This revision: $Author: simon $

Author:

Simon Brooke

Field Summary

protected int

fieldwidth field width of this column.

Constructor Summary

IntegerColumnDescriptor(java.lang.String n, int f)
Creates a new IntegerColumnDescriptor object.

Method Summary

protected java.lang.String	format(Context c) format an integer for sending to the database.
protected java.lang.Object	genKey(Context context) generate a new unique key for me given this context.
protected java.lang.Object	interpret(Context context, java.sql.ResultSet results) put into this context an interpretation of the value of my name in these results.

Methods inherited from class uk.co.weft.dbutil.ColumnDescriptor

createColumnDescriptor, formatForInsert, formatForMatch, formatForMatch, formatForSelect, formatForUpdate, quoteValue

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

fieldwidth

protected int fieldwidth

field width of this column.

Constructor Detail

IntegerColumnDescriptor

public IntegerColumnDescriptor(java.lang.String n,
                               int f)

Creates a new IntegerColumnDescriptor object.

Parameters:

n - my name

f - my fieldwidth

Method Detail

format

protected java.lang.String format(Context c)
                           throws DataFormatException

format an integer for sending to the database.

Overrides:

format in class ColumnDescriptor

Throws:

DataFormatException

genKey

protected java.lang.Object genKey(Context context)
                           throws DataStoreException

generate a new unique key for me given this context. This is intended to work transparently with columns which are auto-incremented and with columns that aren't.

Overrides:

genKey in class ColumnDescriptor

Parameters:

context - a context from which I can grab a connection

Throws:

throws - DataStoreException if a unique key could not be generated

DataStoreException

interpret

protected java.lang.Object interpret(Context context,
                                     java.sql.ResultSet results)
                              throws DataFormatException

put into this context an interpretation of the value of my name in these results. Return the interpretation.

Overrides:

interpret in class ColumnDescriptor

Throws:

DataFormatException