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/*
* Copyright 2006-2012 Amazon Technologies, Inc. or its affiliates.
* Amazon, Amazon.com and Carbonado are trademarks or registered trademarks
* of Amazon Technologies, Inc. or its affiliates. All rights reserved.
*
* 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 com.amazon.carbonado.info;
import java.lang.annotation.Annotation;
import java.lang.reflect.Method;
import org.joda.time.DateMidnight;
import org.joda.time.DateTime;
import org.joda.time.LocalDate;
import org.joda.time.LocalDateTime;
import org.cojen.util.BeanProperty;
import com.amazon.carbonado.adapter.DateTimeAdapter;
import com.amazon.carbonado.adapter.TextAdapter;
/**
* Some property types are not expected to be supported by most repositories,
* except a standard adapter can be applied automatically. Since no annotation
* is present in the storable definition, selected StorablePropertyAdapter
* instances return null from getAnnotation. Automatically selected adapters
* must cope without having an annotation instance, applying defaults.
*
* @author Brian S O'Neill
*/
class AutomaticAdapterSelector {
/**
* @param property bean property which must have a read method
* @return adapter with a null annotation, or null if nothing applicable
*/
static StorablePropertyAdapter selectAdapterFor(final BeanProperty property) {
final Method readMethod = property.getReadMethod();
if (readMethod == null) {
throw new IllegalArgumentException();
}
final Class propertyType = property.getType();
if (DateTime.class.isAssignableFrom(propertyType) ||
DateMidnight.class.isAssignableFrom(propertyType) ||
LocalDate.class.isAssignableFrom(propertyType) ||
LocalDateTime.class.isAssignableFrom(propertyType) ||
java.util.Date.class.isAssignableFrom(propertyType))
{
return selectAdapter(property, DateTimeAdapter.class, readMethod);
} else if (String.class.isAssignableFrom(propertyType)) {
return selectAdapter(property, TextAdapter.class, readMethod);
} // else if ...
return null;
}
private static StorablePropertyAdapter selectAdapter
(BeanProperty property,
Class<? extends Annotation> annotationType,
Method annotatedMethod)
{
StorablePropertyAnnotation annotation =
new StorablePropertyAnnotation(annotationType, annotatedMethod);
return new StorablePropertyAdapter(property, annotation);
}
}
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