/** Return the proper synthetic null indicator value for the given instance. */
public Object getNullIndicatorValue(OpenJPAStateManager sm) {
Column[] cols = cls.getEmbeddingMapping().getColumns();
if (cols.length != 1) return null;
if (sm == null && !cols[0].isNotNull()) return null;
if (sm == null) return JavaSQLTypes.getEmptyValue(cols[0].getJavaType());
return JavaSQLTypes.getNonEmptyValue(cols[0].getJavaType());
}
/** Return whether the given null indicator value means the object is null. */
public boolean indicatesNull(Object val) {
Column[] cols = cls.getEmbeddingMapping().getColumns();
if (cols.length != 1) return false;
if (val == null) return true;
if (cols[0].isNotNull() && val.equals(JavaSQLTypes.getEmptyValue(cols[0].getJavaType())))
return true;
if (cols[0].getDefaultString() != null && val.toString().equals(cols[0].getDefaultString()))
return true;
return false;
}