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The primary goal of the Spring® Data project is to make it easier to build Spring-powered applications
that use data access technologies.
This module deals with enhanced support for a data access layer built on AWS DynamoDB.
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/**
* Copyright © 2018 spring-data-dynamodb (https://github.com/boostchicken/spring-data-dynamodb)
*
* 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.socialsignin.spring.data.dynamodb.mapping;
import com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBHashKey;
import com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBRangeKey;
import com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBTable;
import org.springframework.data.mapping.context.AbstractMappingContext;
import org.springframework.data.mapping.model.Property;
import org.springframework.data.mapping.model.SimpleTypeHolder;
import org.springframework.data.util.TypeInformation;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
/**
* Default implementation of a
* {@link org.springframework.data.mapping.context.MappingContext} for DynamoDB
* using {@link DynamoDBPersistentEntityImpl} and
* {@link DynamoDBPersistentProperty} as primary abstractions.
*
* @author Michael Lavelle
* @author Sebastian Just
*/
public class DynamoDBMappingContext
extends
AbstractMappingContext, DynamoDBPersistentProperty> {
/*
* (non-Javadoc)
*
* @see org.springframework.data.mapping.context.AbstractMappingContext#
* shouldCreatePersistentEntityFor
* (org.springframework.data.util.TypeInformation)
*/
@Override
protected DynamoDBPersistentEntityImpl createPersistentEntity(TypeInformation typeInformation) {
return new DynamoDBPersistentEntityImpl<>(typeInformation, null);
}
/*
* (non-Javadoc)
*
* @see org.springframework.data.mapping.AbstractMappingContext#
* createPersistentProperty(java.lang.reflect.Field,
* java.beans.PropertyDescriptor,
* org.springframework.data.mapping.MutablePersistentEntity,
* org.springframework.data.mapping.SimpleTypeHolder)
*/
@Override
protected DynamoDBPersistentProperty createPersistentProperty(Property property,
DynamoDBPersistentEntityImpl owner, SimpleTypeHolder simpleTypeHolder) {
return new DynamoDBPersistentPropertyImpl(property, owner, simpleTypeHolder);
}
/*
* (non-Javadoc)
*
* @see org.springframework.data.mapping.context.AbstractMappingContext#
* shouldCreatePersistentEntityFor
* (org.springframework.data.util.TypeInformation)
*/
@Override
protected boolean shouldCreatePersistentEntityFor(TypeInformation type) {
boolean hasHashKey = false;
boolean hasRangeKey = false;
for (Method method : type.getType().getMethods()) {
if (method.isAnnotationPresent(DynamoDBHashKey.class)) {
hasHashKey = true;
}
if (method.isAnnotationPresent(DynamoDBRangeKey.class)) {
hasRangeKey = true;
}
}
for (Field field : type.getType().getFields()) {
if (field.isAnnotationPresent(DynamoDBHashKey.class)) {
hasHashKey = true;
}
if (field.isAnnotationPresent(DynamoDBRangeKey.class)) {
hasRangeKey = true;
}
}
return type.getType().isAnnotationPresent(DynamoDBTable.class) || (hasHashKey && hasRangeKey);
}
}