/*
* Copyright 2014 Attila Szegedi, Daniel Dekany, Jonathan Revusky
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package freemarker.ext.jython;
import org.python.core.Py;
import org.python.core.PyException;
import org.python.core.PyObject;
import freemarker.ext.util.ModelFactory;
import freemarker.template.ObjectWrapper;
import freemarker.template.TemplateModel;
import freemarker.template.TemplateModelException;
import freemarker.template.TemplateNumberModel;
/**
* Model for Jython numeric objects ({@link org.python.core.PyInteger}, {@link org.python.core.PyLong},
* {@link org.python.core.PyFloat}).
*/
public class JythonNumberModel
extends
JythonModel
implements
TemplateNumberModel {
static final ModelFactory FACTORY =
new ModelFactory()
{
public TemplateModel create(Object object, ObjectWrapper wrapper) {
return new JythonNumberModel((PyObject) object, (JythonWrapper) wrapper);
}
};
public JythonNumberModel(PyObject object, JythonWrapper wrapper) {
super(object, wrapper);
}
/**
* Returns either {@link PyObject#__tojava__(java.lang.Class)} with
* {@link java.lang.Number}.class as argument. If that fails, returns
* {@link PyObject#__float__()}.
*/
public Number getAsNumber() throws TemplateModelException {
try {
Object value = object.__tojava__(java.lang.Number.class);
if (value == null || value == Py.NoConversion) {
return Double.valueOf(object.__float__().getValue());
}
return (Number) value;
} catch (PyException e) {
throw new TemplateModelException(e);
}
}
}