com.github.lothar.security.acl.jpa.repository.AclJpaRepository.java Source code

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Here is the source code for com.github.lothar.security.acl.jpa.repository.AclJpaRepository.java

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/*******************************************************************************
 * Copyright 2002-2016 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 com.github.lothar.security.acl.jpa.repository;

import static com.github.lothar.security.acl.jpa.spec.AclJpaSpecifications.idEqualTo;
import static org.springframework.data.jpa.domain.Specifications.where;

import java.io.Serializable;

import javax.persistence.EntityManager;
import javax.persistence.EntityNotFoundException;
import javax.persistence.TypedQuery;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.data.domain.Sort;
import org.springframework.data.jpa.domain.Specification;
import org.springframework.data.jpa.domain.Specifications;
import org.springframework.data.jpa.repository.support.JpaEntityInformation;
import org.springframework.data.jpa.repository.support.SimpleJpaRepository;

import com.github.lothar.security.acl.jpa.JpaSpecProvider;

public class AclJpaRepository<T, ID extends Serializable> extends SimpleJpaRepository<T, ID> {

    private Logger logger = LoggerFactory.getLogger(getClass());
    private JpaSpecProvider<T> jpaSpecProvider;

    public AclJpaRepository(Class<T> domainClass, EntityManager em, JpaSpecProvider<T> jpaSpecProvider) {
        super(domainClass, em);
        this.jpaSpecProvider = jpaSpecProvider;
    }

    // reflection invocation by
    // com.github.lothar.security.acl.jpa.repository.AclJpaRepositoryFactoryBean.Factory.getTargetRepository(RepositoryInformation,
    // EntityManager)
    public AclJpaRepository(JpaEntityInformation<T, ?> entityInformation, EntityManager entityManager,
            JpaSpecProvider<T> jpaSpecProvider) {
        super(entityInformation, entityManager);
        this.jpaSpecProvider = jpaSpecProvider;
    }

    @Override
    public long count() {
        return super.count((Specification<T>) null);
    }

    @Override
    public boolean exists(ID id) {
        return findOne(id) != null;
    }

    @Override
    public T findOne(ID id) {
        return super.findOne(idEqualTo(id));
    }

    @Override
    public T getOne(ID id) {
        T entity = this.findOne(id);
        if (entity == null) {
            throw new EntityNotFoundException("Unable to find " + getDomainClass().getName() + " with id " + id);
        }
        return entity;
    }

    @Override
    @SuppressWarnings("unchecked")
    protected <S extends T> TypedQuery<Long> getCountQuery(Specification<S> spec, Class<S> domainClass) {
        return super.getCountQuery(((Specifications<S>) aclJpaSpec()).and(spec), domainClass);
    }

    @Override
    @SuppressWarnings("unchecked")
    protected <S extends T> TypedQuery<S> getQuery(Specification<S> spec, Class<S> domainClass, Sort sort) {
        return super.getQuery(((Specifications<S>) aclJpaSpec()).and(spec), domainClass, sort);
    }

    private Specifications<T> aclJpaSpec() {
        Specification<T> spec = jpaSpecProvider.jpaSpecFor(getDomainClass());
        logger.debug("Using ACL JPA specification for objects '{}': {}", getDomainClass().getSimpleName(), spec);
        return where(spec);
    }

    @Override
    public String toString() {
        return getClass().getSimpleName() + "<" + getDomainClass().getSimpleName() + ">";
    }
}