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diff --git a/branches/sdo-1.1.1-incubating/sdo-api/src/main/java/commonj/sdo/helper/DataHelper.java b/branches/sdo-1.1.1-incubating/sdo-api/src/main/java/commonj/sdo/helper/DataHelper.java
deleted file mode 100644
index 2b705c718e..0000000000
--- a/branches/sdo-1.1.1-incubating/sdo-api/src/main/java/commonj/sdo/helper/DataHelper.java
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-/**
- * <copyright>
- *
- * Service Data Objects
- * Version 2.1.0
- * Licensed Materials
- *
- * (c) Copyright BEA Systems, Inc., International Business Machines Corporation, 
- * Oracle Corporation, Primeton Technologies Ltd., Rogue Wave Software, SAP AG., 
- * Software AG., Sun Microsystems, Sybase Inc., Xcalia, Zend Technologies, 
- * 2005, 2006. All rights reserved.
- *
- * </copyright>
- * 
- */
-
-package commonj.sdo.helper;
-
-import java.util.Calendar;
-import java.util.Date;
-import java.util.Locale;
-
-import commonj.sdo.Type;
-import commonj.sdo.Property;
-
-import commonj.sdo.impl.HelperProvider;
-
-/**
- * Data helper methods.
- */
-public interface DataHelper
-{
-  /**
-   * Convert from a String representation of an SDO date type to a Date.
-   * @param dateString the String representation of an SDO date type
-   * @return a Date representation of an SDO date type.
-   * @throws IllegalArgumentException for invalid formats.
-   */
-  Date toDate(String dateString);
-  
-  /**
-   * Convert from a String representation of an SDO date type to a Calendar using the
-   * default locale.  Same as toCalendar(dateString, null).
-   * @param dateString the String representation of an SDO date type
-   * @return a Calendar representation of an SDO date type.
-   * @throws IllegalArgumentException for invalid formats.
-   */
-  Calendar toCalendar(String dateString);
-  
-  /**
-   * Convert from a String representation of an SDO date type to a Calendar using the
-   * specified locale, or the default locale if the locale is null.
-   * @param dateString the String representation of an SDO date type
-   * @param locale the locale or null for default locale.
-   * @return a Calendar representation of an SDO date type.
-   * @throws IllegalArgumentException for invalid formats.
-   */
-  Calendar toCalendar(String dateString, Locale locale);
-
-  /**
-   * Convert from a Date to a String representation of the DateTime type.
-   * @param date the date
-   * @return a Date to a String representation of the DateTime type.
-   */
-  String toDateTime(Date date);
-  
-  /**
-   * Convert from a Date to a String representation of the Duration type.
-   * @param date the date
-   * @return a Date to a String representation of the Duration type.
-   */
-  String toDuration(Date date);
-
-  /**
-   * Convert from a Date to a String representation of the Time type.
-   * @param date the date
-   * @return a Date to a String representation of the Time type.
-   */
-  String toTime(Date date);
-  
-  /**
-   * Convert from a Date to a String representation of the Day type.
-   * @param date the date
-   * @return a Date to a String representation of the Day type.
-   */
-  String toDay(Date date);
-  
-  /**
-   * Convert from a Date to a String representation of the Month type.
-   * @param date the date
-   * @return a Date to a String representation of the Month type.
-   */
-  String toMonth(Date date);
-
-  /**
-   * Convert from a Date to a String representation of the MonthDay type.
-   * @param date the date
-   * @return a Date to a String representation of the MonthDay type.
-   */
-  String toMonthDay(Date date);
-
-  /**
-   * Convert from a Date to a String representation of the Year type.
-   * @param date the date
-   * @return a Date to a String representation of the Year type.
-   */
-  String toYear(Date date);
-
-  /**
-   * Convert from a Date to a String representation of the YearMonth type.
-   * @param date the date
-   * @return a Date to a String representation of the YearMonth type.
-   */
-  String toYearMonth(Date date);
-
-  /**
-   * Convert from a Date to a String representation of the YearMonthDay type.
-   * @param date the date
-   * @return a Date to a String representation of the YearMonthDay type.
-   */
-  String toYearMonthDay(Date date);
-
-  /**
-   * Convert from a Calendar to a String representation of the DateTime type.
-   * @param calendar the calendar to convert
-   * @return a Calendar to a String representation of the DateTime type.
-   */
-  String toDateTime(Calendar calendar);
-
-  /**
-   * Convert from a Calendar to a String representation of the Duration type.
-   * @param calendar the calendar to convert
-   * @return a Calendar to a String representation of the Duration type.
-   */
-  String toDuration(Calendar calendar);
-
-  /**
-   * Convert from a Calendar to a String representation of the Time type.
-   * @param calendar the calendar to convert
-   * @return a Calendar to a String representation of the Time type.
-   */
-  String toTime(Calendar calendar);
-
-  /**
-   * Convert from a Calendar to a String representation of the Day type.
-   * @param calendar the calendar to convert
-   * @return a Calendar to a String representation of the Day type.
-   */
-  String toDay(Calendar calendar);
-
-  /**
-   * Convert from a Calendar to a String representation of the Month type.
-   * @param calendar the calendar to convert
-   * @return a Calendar to a String representation of the Month type.
-   */
-  String toMonth(Calendar calendar);
-
-  /**
-   * Convert from a Calendar to a String representation of the MonthDay type.
-   * @param calendar the calendar to convert
-   * @return a Calendar to a String representation of the MonthDay type.
-   */
-  String toMonthDay(Calendar calendar);
-
-  /**
-   * Convert from a Calendar to a String representation of the Year type.
-   * @param calendar the calendar to convert
-   * @return a Calendar to a String representation of the Year type.
-   */
-  String toYear(Calendar calendar);
-
-  /**
-   * Convert from a Calendar to a String representation of the YearMonth type.
-   * @param calendar the calendar to convert
-   * @return a Calendar to a String representation of the YearMonth type.
-   */
-  String toYearMonth(Calendar calendar);
-
-  /**
-   * Convert from a Calendar to a String representation of the YearMonthDay type.
-   * @param calendar the calendar to convert
-   * @return a Calendar to a String representation of the YearMonthDay type.
-   */
-  String toYearMonthDay(Calendar calendar);
-  
-  /**
-   * Convert the specified value to an {@link Type#getInstanceClass() instance}
-   * of the specified type.
-   * Supported conversions are listed in Section 16 of the SDO specification.
-   * @param type the target {@link Type#isDataType() data type}.
-   * @param value the value to convert
-   * @return a value of the specified type's instance class
-   * @throws IllegalArgumentException if the value could not be converted
-   * @see #convert(Property, Object)
-   */
-  Object convert(Type type, Object value);
-  
-  /**
-   * Convert the specified value to an {@link Type#getInstanceClass() instance}
-   * of the specified property's {@link Property#getType() type}. 
-   * The specified value must be a List if the property is {@link Property#isMany()
-   * many valued}. In this case, all the values in the List are converted.
-   * @param property the target {@link Type#isDataType() data type} property.
-   * @param value the value or List of values to convert
-   * @return a converted value or list of converted values
-   * @throws IllegalArgumentException if the value could not be converted
-   * @see #convert(Type, Object)
-   */
-  Object convert(Property property, Object value);
-  
-  /**
-   * The default DataHelper.
-   */
-  DataHelper INSTANCE = HelperProvider.getDataHelper();
-}