/*
* Copyright 2012-2017 the original author or authors.
*
* 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.springframework.boot.context.properties.bind.convert;
import java.beans.PropertyEditor;
import java.util.Collection;
import java.util.Collections;
import java.util.LinkedHashSet;
import java.util.Map;
import java.util.Set;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.PropertyEditorRegistrySupport;
import org.springframework.beans.SimpleTypeConverter;
import org.springframework.core.convert.TypeDescriptor;
import org.springframework.core.convert.converter.ConditionalConverter;
import org.springframework.core.convert.converter.GenericConverter;
/**
* {@link GenericConverter} that delegates to Java bean {@link PropertyEditor
* PropertyEditors}.
*
* @author Phillip Webb
*/
class PropertyEditorConverter implements GenericConverter, ConditionalConverter {
private static final Set<Class<?>> SKIPPED;
static {
Set<Class<?>> skipped = new LinkedHashSet<>();
skipped.add(Collection.class);
skipped.add(Map.class);
SKIPPED = Collections.unmodifiableSet(skipped);
}
/**
* Registry that can be used to check if conversion is supported. Since
* {@link PropertyEditor PropertyEditors} are not thread safe this can't be used for
* actual conversion.
*/
private final PropertyEditorRegistrySupport registry = new SimpleTypeConverter();
@Override
public Set<ConvertiblePair> getConvertibleTypes() {
return null;
}
@Override
public boolean matches(TypeDescriptor sourceType, TypeDescriptor targetType) {
Class<?> type = targetType.getType();
if (isSkipped(type)) {
return false;
}
PropertyEditor editor = this.registry.getDefaultEditor(type);
editor = (editor != null ? editor : BeanUtils.findEditorByConvention(type));
return editor != null;
}
private boolean isSkipped(Class<?> type) {
return SKIPPED.stream().anyMatch((c) -> c.isAssignableFrom(type));
}
@Override
public Object convert(Object source, TypeDescriptor sourceType,
TypeDescriptor targetType) {
return new SimpleTypeConverter().convertIfNecessary(source, targetType.getType());
}
}