/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.uima.fit.legacy;
import java.lang.annotation.Annotation;
import java.lang.reflect.AccessibleObject;
import java.util.HashMap;
import java.util.Map;
import org.apache.uima.fit.internal.LegacySupportPlugin;
import org.apache.uima.fit.internal.MetaDataType;
import org.apache.uima.fit.legacy.converter.ConfigurationParameterConverter;
import org.apache.uima.fit.legacy.converter.ExternalResourceConverter;
import org.apache.uima.fit.legacy.converter.FsIndexCollectionConverter;
import org.apache.uima.fit.legacy.converter.FsIndexConverter;
import org.apache.uima.fit.legacy.converter.FsIndexKeyConverter;
import org.apache.uima.fit.legacy.converter.NoConversionConverter;
import org.apache.uima.fit.legacy.converter.OperationalPropertiesConverter;
import org.apache.uima.fit.legacy.converter.SofaCapabilityConverter;
import org.apache.uima.fit.legacy.converter.TypeCapabilityConverter;
import org.apache.uima.resource.ResourceInitializationException;
import org.uimafit.factory.FsIndexFactory;
import org.uimafit.factory.TypeSystemDescriptionFactory;
/**
* Legacy support plug in for the Google Code version of uimaFIT.
*/
public class LegacySupportPluginImpl implements LegacySupportPlugin {
private Map<Class<? extends Annotation>, AnnotationConverter<?,?>> converterRegistry;
public LegacySupportPluginImpl() {
register(new ConfigurationParameterConverter());
register(new ExternalResourceConverter());
register(new FsIndexConverter());
register(new FsIndexCollectionConverter());
register(new FsIndexKeyConverter());
register(new OperationalPropertiesConverter());
register(new SofaCapabilityConverter());
register(new TypeCapabilityConverter());
}
public boolean isAnnotationPresent(AccessibleObject aObject,
Class<? extends Annotation> aAnnotationClass) {
Class<? extends Annotation> legacyType = getLegacyType(aAnnotationClass);
if (legacyType != null) {
// UIMA-3853 workaround for IBM Java 8 beta 3
return aObject.getAnnotation(legacyType) != null;
}
else {
return false;
}
}
public boolean isAnnotationPresent(Class<?> aObject,
Class<? extends Annotation> aAnnotationClass) {
Class<? extends Annotation> legacyType = getLegacyType(aAnnotationClass);
if (legacyType != null) {
// UIMA-3853 workaround for IBM Java 8 beta 3
return aObject.getAnnotation(legacyType) != null;
}
else {
return false;
}
}
public <L extends Annotation, M extends Annotation> M getAnnotation(AccessibleObject aObject,
Class<M> aAnnotationClass) {
// Get converter
AnnotationConverter<L, M> converter = getConverter(aAnnotationClass);
// Find legacy annotation
L legacyAnnotation = aObject.getAnnotation(converter.getLegacyType());
if (legacyAnnotation != null) {
// If legacy annotation is present, convert it to a modern annotation
return converter.convert(aObject, legacyAnnotation);
} else {
return null;
}
}
public <L extends Annotation, M extends Annotation> M getAnnotation(Class<?> aObject,
Class<M> aAnnotationClass) {
// Get converter
AnnotationConverter<L, M> converter = getConverter(aAnnotationClass);
// Find legacy annotation
L legacyAnnotation = aObject.getAnnotation(converter.getLegacyType());
if (legacyAnnotation != null) {
// If legacy annotation is present, convert it to a modern annotation
return converter.convert(aObject, legacyAnnotation);
} else {
return null;
}
}
/**
* Get a converter for the given modern type.
*
* @param aModernType a modern annotation type.
* @return a converter. This method never returns {@code null}.
*/
@SuppressWarnings("unchecked")
private <L extends Annotation, M extends Annotation> AnnotationConverter<L, M> getConverter(Class<M> aModernType)
{
AnnotationConverter<?,?> conv = converterRegistry.get(aModernType);
if (conv == null) {
conv = NoConversionConverter.getInstance();
}
return (AnnotationConverter<L, M>) conv;
}
private <L extends Annotation, M extends Annotation> Class<L> getLegacyType(Class<M> aModernType)
{
AnnotationConverter<L, M> converter = getConverter(aModernType);
if (converter != null) {
return converter.getLegacyType();
}
else {
return null;
}
}
/**
* Register a new converter.
*/
private void register(AnnotationConverter<?,?> aConverter)
{
if (converterRegistry == null) {
converterRegistry = new HashMap<Class<? extends Annotation>, AnnotationConverter<?,?>>();
}
converterRegistry.put(aConverter.getModernType(), aConverter);
}
public String[] scanTypeDescriptors(MetaDataType aType) throws ResourceInitializationException {
switch (aType) {
case FS_INDEX:
return FsIndexFactory.scanIndexDescriptors();
case TYPE_SYSTEM:
return TypeSystemDescriptionFactory.scanTypeDescriptors();
default:
return new String[0];
}
}
}