/*
* Copyright (c) 2008 Stiftung Deutsches Elektronen-Synchrotron,
* 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.platform.internal.simpledal.local;
import java.lang.reflect.Method;
public class ClassMethodGenerator extends AbstractDataGenerator<String> {
private Method _staticMethod;
public ClassMethodGenerator(LocalChannel localChannel, int defaultPeriod,
String[] options) {
super(localChannel, defaultPeriod, options);
}
/**
* {@inheritDoc}
*/
@Override
protected void init(String[] options) {
String className = options[0];
String methodName = options[1];
try {
Class c = Class.forName(className);
_staticMethod = c.getMethod(methodName, null);
} catch (ClassNotFoundException e) {
e.printStackTrace();
} catch (SecurityException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (NoSuchMethodException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
int period = Integer.parseInt(options[2]);
setPeriod(period);
} catch (NumberFormatException nfe) {
// ignore
}
}
/**
* {@inheritDoc}
*/
@Override
protected String generateNextValue() {
Object result = "";
if (_staticMethod != null) {
try {
result = _staticMethod.invoke(null, null);
} catch (Exception e) {
result = e.getMessage();
}
}
return result.toString();
}
}