205 lines
6.0 KiB
Java
205 lines
6.0 KiB
Java
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/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* $Header:$
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*/
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package org.apache.beehive.controls.runtime.assembly;
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import java.io.File;
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import java.lang.annotation.Annotation;
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import java.lang.reflect.Method;
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import java.util.Map;
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import java.util.Set;
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import java.util.LinkedList;
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import java.util.Queue;
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import com.sun.mirror.apt.Messager;
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import com.sun.mirror.util.SourcePosition;
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import org.apache.beehive.controls.api.bean.ControlInterface;
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import org.apache.beehive.controls.api.assembly.ControlAssemblyContext;
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import org.apache.beehive.controls.api.assembly.ControlAssemblyException;
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import org.apache.beehive.controls.runtime.bean.ControlUtils;
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/**
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* Abstract ControlAssemblyContext implementation. Provides a basic implementation of most non-module-specific
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* APIs, meant to be extended by module-specific types.
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*/
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public abstract class BaseAssemblyContext implements ControlAssemblyContext
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{
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protected BaseAssemblyContext( Class controlIntfOrExt, Map<String,String> bindings,
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Set<String> clients, File moduleRoot,
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String moduleName, File srcOutputRoot )
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throws ControlAssemblyException
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{
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_controlIntfOrExt = controlIntfOrExt;
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_bindings = bindings;
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_clients = clients;
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_moduleRoot = moduleRoot;
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_moduleName = moduleName;
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_srcOutputRoot = srcOutputRoot;
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_messager = new DefaultAssemblyMessager();
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// Compute and cache "most derived ControlInterface"
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Queue<Class> q = new LinkedList<Class>();
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Class ci = controlIntfOrExt;
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while ( ci != null )
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{
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if ( ci.isAnnotationPresent(ControlInterface.class) )
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{
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_controlMostDerivedIntf = ci;
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break;
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}
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Class[] supers = ci.getInterfaces();
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for ( Class s : supers )
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q.offer( s );
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ci = q.poll();
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}
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if ( _controlMostDerivedIntf == null )
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throw new ControlAssemblyException( "Invalid control type: " + controlIntfOrExt.getName() );
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}
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public Class getControlType()
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{
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return _controlIntfOrExt;
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}
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public Class getMostDerivedControlInterface()
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{
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return _controlMostDerivedIntf;
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}
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// TODO - if we want to override class annotations on instance then here is where we will do it
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public <T extends Annotation> T
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getControlAnnotation(Class<T> annotationClass)
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{
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Class controlInterface = getControlType();
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return (T)controlInterface.getAnnotation(annotationClass);
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}
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public <T extends Annotation> T
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getControlMethodAnnotation(Class<T> annotationClass, Method m)
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throws NoSuchMethodException
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{
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Class controlInterface = getControlType();
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Method controlMethod = controlInterface.getMethod(
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m.getName(), m.getParameterTypes());
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return (T)controlMethod.getAnnotation(annotationClass);
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}
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public String getDefaultImplClassName()
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{
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Class ci = getMostDerivedControlInterface();
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ControlInterface a = (ControlInterface)
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ci.getAnnotation(ControlInterface.class);
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return ControlUtils.resolveDefaultBinding( a.defaultBinding(), ci.getName() );
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}
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public File getSrcOutputDir()
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{
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return _srcOutputRoot;
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}
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public File getModuleDir()
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{
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return _moduleRoot;
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}
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public String getModuleName()
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{
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return _moduleName;
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}
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public Set<String> getClients()
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{
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return _clients;
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}
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public Messager getMessager()
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{
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return _messager;
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}
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public boolean hasErrors()
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{
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return _nErrors > 0;
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}
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private class DefaultAssemblyMessager implements Messager
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{
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public void printError( SourcePosition pos, String msg )
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{
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printDiagnostic( "Error", pos, msg );
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_nErrors++;
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}
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public void printError( String msg )
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{
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printError( null, msg );
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}
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public void printNotice( SourcePosition pos, String msg )
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{
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printDiagnostic( "Notice", pos, msg );
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}
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public void printNotice( String msg )
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{
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printNotice( null, msg );
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}
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public void printWarning( SourcePosition pos, String msg )
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{
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printDiagnostic( "Warning", pos, msg );
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}
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public void printWarning( String msg )
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{
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printWarning( null, msg );
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}
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protected void printDiagnostic( String type, SourcePosition pos, String msg )
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{
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String fn = "<not available>";
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int line = 0;
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int column = 0;
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if ( pos != null )
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{
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fn = pos.file().getName();
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line = pos.line();
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column = pos.column();
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}
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System.out.println( type + ": (" + fn + ":" + line + ":" + column + ") " + msg );
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}
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}
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private File _moduleRoot;
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private String _moduleName;
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private File _srcOutputRoot;
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private Class _controlIntfOrExt;
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private Map<String,String> _bindings;
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private Set<String> _clients;
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private Messager _messager;
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private int _nErrors = 0;
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private Class _controlMostDerivedIntf;
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}
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