org.springframework.data.support.IsNewStrategyFactorySupport Maven / Gradle / Ivy
/*
* Copyright 2012-2019 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.data.support;
import org.springframework.data.domain.Persistable;
import org.springframework.lang.Nullable;
import org.springframework.util.Assert;
/**
* {@link IsNewStrategyFactory} that handles {@link Persistable} implementations directly by returning a
* {@link PersistableIsNewStrategy} and delegating to {@link #doGetIsNewStrategy(Class)} for all other types.
*
* @author Oliver Gierke
* @since 1.5
* @deprecated since 2.1 in favor of {@link org.springframework.data.mapping.PersistentEntity#isNew(Object)}
*/
public abstract class IsNewStrategyFactorySupport implements IsNewStrategyFactory {
/*
* (non-Javadoc)
* @see org.springframework.data.support.IsNewStrategyFactory#getIsNewStrategy(java.lang.Class)
*/
public final IsNewStrategy getIsNewStrategy(Class type) {
Assert.notNull(type, "Type must not be null!");
if (Persistable.class.isAssignableFrom(type)) {
return PersistableIsNewStrategy.INSTANCE;
}
IsNewStrategy strategy = doGetIsNewStrategy(type);
if (strategy != null) {
return strategy;
}
throw new IllegalArgumentException(
String.format("Unsupported entity %s! Could not determine IsNewStrategy.", type.getName()));
}
/**
* Determine the actual {@link IsNewStrategy} to be used for the given type.
*
* @param type will never be {@literal null}.
* @return the {@link IsNewStrategy} to be used for the given type or {@literal null} in case none can be resolved.
*/
@Nullable
protected abstract IsNewStrategy doGetIsNewStrategy(Class type);
}