/*
* Copyright (c) 2006 Stiftung Deutsches Elektronen-Synchroton,
* Member of the Helmholtz Association, (DESY), HAMBURG, GERMANY.
*
* THIS SOFTWARE IS PROVIDED UNDER THIS LICENSE ON AN "../AS IS" BASIS.
* WITHOUT WARRANTY OF ANY KIND, EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED
* TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR PARTICULAR PURPOSE AND
* NON-INFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
* FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR
* THE USE OR OTHER DEALINGS IN THE SOFTWARE. SHOULD THE SOFTWARE PROVE DEFECTIVE
* IN ANY RESPECT, THE USER ASSUMES THE COST OF ANY NECESSARY SERVICING, REPAIR OR
* CORRECTION. THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS LICENSE.
* NO USE OF ANY SOFTWARE IS AUTHORIZED HEREUNDER EXCEPT UNDER THIS DISCLAIMER.
* DESY HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS,
* OR MODIFICATIONS.
* THE FULL LICENSE SPECIFYING FOR THE SOFTWARE THE REDISTRIBUTION, MODIFICATION,
* USAGE AND OTHER RIGHTS AND OBLIGATIONS IS INCLUDED WITH THE DISTRIBUTION OF THIS
* PROJECT IN THE FILE LICENSE.HTML. IF THE LICENSE IS NOT INCLUDED YOU MAY FIND A COPY
* AT HTTP://WWW.DESY.DE/LEGAL/LICENSE.HTM
*/
package org.csstudio.dal.impl;
import org.csstudio.dal.DataAccess;
import org.csstudio.dal.DoubleAccess;
public class DoubleDataAccessWrapper extends AbstractDataAccessWrapper<Double> implements DoubleAccess{
private static final int NUMBER_TO_DOUBLE = 1;
private static final int LONG_TO_DOUBLE = 2;
public DoubleDataAccessWrapper(DataAccess sourceDA){
super(Double.class, sourceDA);
}
@Override
protected int getConversion()
{
if (valClass.equals(Double.class)) {
if (sourceDA.getDataType().equals(Number.class))
return NUMBER_TO_DOUBLE;
else if (sourceDA.getDataType().equals(Long.class))
return LONG_TO_DOUBLE;
}
return UNKNOWN;
}
@Override
protected Object convertToOriginal(Double value, DataAccess dataAccess){
if (value == null)
return null;
switch (conversion) {
case LONG_TO_DOUBLE: {
Long longVal = value.longValue();
return longVal;
}
case NUMBER_TO_DOUBLE: {
return value;
}
}
return null;
}
@Override
protected Double convertFromOriginal(Object value, DataAccess dataAccess){
if (value == null)
return null;
switch (conversion) {
case NUMBER_TO_DOUBLE: {
Double doubleVal = new Double(((Number)value).doubleValue());
return doubleVal;
}
case LONG_TO_DOUBLE: {
Double doubleVal = new Double(((Long)value).doubleValue());
return doubleVal;
}
}
return null;
}
}