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77 lines (59 loc) · 2.85 KB
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/**
* Copyright (C) 2010-2013 eBusiness Information, Excilys Group
*
* 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 org.androidannotations.processing;
import static com.sun.codemodel.JExpr._new;
import static com.sun.codemodel.JExpr.lit;
import javax.lang.model.element.Element;
import javax.lang.model.element.ExecutableElement;
import org.androidannotations.annotations.Background;
import org.androidannotations.api.BackgroundExecutor;
import org.androidannotations.api.BackgroundExecutor.Task;
import org.androidannotations.helper.APTCodeModelHelper;
import com.sun.codemodel.JBlock;
import com.sun.codemodel.JClass;
import com.sun.codemodel.JClassAlreadyExistsException;
import com.sun.codemodel.JCodeModel;
import com.sun.codemodel.JDefinedClass;
import com.sun.codemodel.JInvocation;
import com.sun.codemodel.JMethod;
import com.sun.codemodel.JMod;
public class BackgroundProcessor implements DecoratingElementProcessor {
private final APTCodeModelHelper helper = new APTCodeModelHelper();
@Override
public String getTarget() {
return Background.class.getName();
}
@Override
public void process(Element element, JCodeModel codeModel, EBeanHolder holder) throws JClassAlreadyExistsException {
ExecutableElement executableElement = (ExecutableElement) element;
holder.generateApiClass(element, BackgroundExecutor.class);
JMethod delegatingMethod = helper.overrideAnnotatedMethod(executableElement, holder);
JBlock previousMethodBody = helper.removeBody(delegatingMethod);
JDefinedClass anonymousTaskClass = codeModel.anonymousClass(Task.class);
JMethod executeMethod = anonymousTaskClass.method(JMod.PUBLIC, codeModel.VOID, "execute");
executeMethod.annotate(Override.class);
JBlock runMethodBody = executeMethod.body();
helper.surroundWithTryCatch(holder, runMethodBody, previousMethodBody, "A runtime exception was thrown while executing code in a background task");
Background annotation = element.getAnnotation(Background.class);
String id = annotation.id();
int delay = annotation.delay();
String serial = annotation.serial();
JClass backgroundExecutorClass = holder.refClass(BackgroundExecutor.class);
JInvocation newTask = _new(anonymousTaskClass).arg(lit(id)).arg(lit(delay)).arg(lit(serial));
JInvocation executeCall = backgroundExecutorClass.staticInvoke("execute").arg(newTask);
delegatingMethod.body().add(executeCall);
}
}