package org.apache.beehive.controls.runtime.assembly;
/*
* Copyright 2004 The Apache Software Foundation.
*
* 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.
*
* $Header:$
*/
import org.apache.beehive.controls.api.bean.ControlInterface;
import org.apache.beehive.controls.api.assembly.ControlAssemblyContext;
import org.apache.beehive.controls.api.assembly.ControlAssemblyException;
import org.apache.beehive.controls.runtime.bean.ControlBeanContext;
import java.io.File;
import java.lang.annotation.Annotation;
import java.lang.reflect.Method;
import java.util.*;
import com.sun.mirror.apt.Messager;
import com.sun.mirror.util.SourcePosition;
/**
* Abstract ControlAssemblyContext implementation. Provides a basic implementation of most non-module-specific
* APIs, meant to be extended by module-specific types.
*/
public abstract class BaseAssemblyContext implements ControlAssemblyContext
{
protected BaseAssemblyContext( Class controlIntfOrExt, Map<String,String> bindings,
Set<String> clients, File moduleRoot,
String moduleName, File srcOutputRoot )
throws ControlAssemblyException
{
_controlIntfOrExt = controlIntfOrExt;
_bindings = bindings;
_clients = clients;
_moduleRoot = moduleRoot;
_moduleName = moduleName;
_srcOutputRoot = srcOutputRoot;
_messager = new DefaultAssemblyMessager();
// Compute and cache "most derived ControlInterface"
Queue<Class> q = new LinkedList<Class>();
Class ci = controlIntfOrExt;
while ( ci != null )
{
if ( ci.isAnnotationPresent(ControlInterface.class) )
{
_controlMostDerivedIntf = ci;
break;
}
Class[] supers = ci.getInterfaces();
for ( Class s : supers )
q.offer( s );
ci = q.poll();
}
if ( _controlMostDerivedIntf == null )
throw new ControlAssemblyException( "Invalid control type: " + controlIntfOrExt.getName() );
}
public Class getControlType()
{
return _controlIntfOrExt;
}
public Class getMostDerivedControlInterface()
{
return _controlMostDerivedIntf;
}
// TODO - if we want to override class annotations on instance
// then here is where we will do it
public <T extends Annotation> T
getControlAnnotation(Class<T> annotationClass)
{
Class controlInterface = getControlType();
return (T)controlInterface.getAnnotation(annotationClass);
}
public <T extends Annotation> T
getControlMethodAnnotation(Class<T> annotationClass, Method m)
throws NoSuchMethodException
{
Class controlInterface = getControlType();
Method controlMethod = controlInterface.getMethod(
m.getName(), m.getParameterTypes());
return (T)controlMethod.getAnnotation(annotationClass);
}
public String getDefaultImplClassName()
{
Class ci = getMostDerivedControlInterface();
ControlInterface a = (ControlInterface)
ci.getAnnotation(ControlInterface.class);
return ControlBeanContext.resolveDefaultBinding( a.defaultBinding(), ci.getName() );
}
public File getSrcOutputDir()
{
return _srcOutputRoot;
}
public File getModuleDir()
{
return _moduleRoot;
}
public String getModuleName()
{
return _moduleName;
}
public Set<String> getClients()
{
return _clients;
}
public Messager getMessager()
{
return _messager;
}
public boolean hasErrors()
{
return _nErrors > 0;
}
private class DefaultAssemblyMessager implements Messager
{
public void printError( SourcePosition pos, String msg )
{
printDiagnostic( "Error", pos, msg );
_nErrors++;
}
public void printError( String msg )
{
printError( null, msg );
}
public void printNotice( SourcePosition pos, String msg )
{
printDiagnostic( "Notice", pos, msg );
}
public void printNotice( String msg )
{
printNotice( null, msg );
}
public void printWarning( SourcePosition pos, String msg )
{
printDiagnostic( "Warning", pos, msg );
}
public void printWarning( String msg )
{
printWarning( null, msg );
}
protected void printDiagnostic( String type, SourcePosition pos, String msg )
{
String fn = "<not available>";
int line = 0;
int column = 0;
if ( pos != null )
{
fn = pos.file().getName();
line = pos.line();
column = pos.column();
}
System.out.println( type + ": (" + fn + ":" + line + ":" + column + ") " + msg );
}
}
private File _moduleRoot;
private String _moduleName;
private File _srcOutputRoot;
private Class _controlIntfOrExt;
private Map<String,String> _bindings;
private Set<String> _clients;
private Messager _messager;
private int _nErrors = 0;
private Class _controlMostDerivedIntf;
}