org.apereo.portal.layout.dlm.FragmentDefinitionDao.java Source code

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Here is the source code for org.apereo.portal.layout.dlm.FragmentDefinitionDao.java

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/**
 * Licensed to Apereo under one or more contributor license
 * agreements. See the NOTICE file distributed with this work
 * for additional information regarding copyright ownership.
 * Apereo licenses this file to you 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 the following location:
 *
 *   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.apereo.portal.layout.dlm;

import java.util.List;

import javax.persistence.EntityManager;
import javax.persistence.TypedQuery;
import javax.persistence.criteria.CriteriaBuilder;
import javax.persistence.criteria.CriteriaQuery;
import javax.persistence.criteria.ParameterExpression;
import javax.persistence.criteria.Root;

import org.apache.commons.lang.Validate;
import org.apereo.portal.jpa.BasePortalJpaDao;
import org.springframework.dao.support.DataAccessUtils;
import org.springframework.stereotype.Repository;

import com.google.common.base.Function;

@Repository
public class FragmentDefinitionDao extends BasePortalJpaDao implements IFragmentDefinitionDao {
    private CriteriaQuery<FragmentDefinition> findAllFragmentsQuery;
    private CriteriaQuery<FragmentDefinition> findFragmentByNameQuery;
    private CriteriaQuery<FragmentDefinition> findFragmentByOwnerQuery;
    private ParameterExpression<String> nameParameter;
    private ParameterExpression<String> ownerParameter;

    @Override
    public void afterPropertiesSet() throws Exception {
        this.nameParameter = this.createParameterExpression(String.class, "name");
        this.ownerParameter = this.createParameterExpression(String.class, "ownerId");

        this.findAllFragmentsQuery = this
                .createCriteriaQuery(new Function<CriteriaBuilder, CriteriaQuery<FragmentDefinition>>() {
                    @Override
                    public CriteriaQuery<FragmentDefinition> apply(CriteriaBuilder cb) {
                        final CriteriaQuery<FragmentDefinition> criteriaQuery = cb
                                .createQuery(FragmentDefinition.class);
                        criteriaQuery.from(FragmentDefinition.class);
                        return criteriaQuery;
                    }
                });

        this.findFragmentByNameQuery = this
                .createCriteriaQuery(new Function<CriteriaBuilder, CriteriaQuery<FragmentDefinition>>() {
                    @Override
                    public CriteriaQuery<FragmentDefinition> apply(CriteriaBuilder cb) {
                        final CriteriaQuery<FragmentDefinition> criteriaQuery = cb
                                .createQuery(FragmentDefinition.class);
                        final Root<FragmentDefinition> fragDefRoot = criteriaQuery.from(FragmentDefinition.class);
                        criteriaQuery.select(fragDefRoot);
                        criteriaQuery.where(cb.equal(fragDefRoot.get(FragmentDefinition_.name), nameParameter));

                        return criteriaQuery;
                    }
                });

        this.findFragmentByOwnerQuery = this
                .createCriteriaQuery(new Function<CriteriaBuilder, CriteriaQuery<FragmentDefinition>>() {
                    @Override
                    public CriteriaQuery<FragmentDefinition> apply(CriteriaBuilder cb) {
                        final CriteriaQuery<FragmentDefinition> criteriaQuery = cb
                                .createQuery(FragmentDefinition.class);
                        final Root<FragmentDefinition> fragDefRoot = criteriaQuery.from(FragmentDefinition.class);
                        criteriaQuery.select(fragDefRoot);
                        criteriaQuery.where(cb.equal(fragDefRoot.get(FragmentDefinition_.ownerID), ownerParameter));

                        return criteriaQuery;
                    }
                });
    }

    @Override
    public List<FragmentDefinition> getAllFragments() {
        final TypedQuery<FragmentDefinition> query = this.createCachedQuery(this.findAllFragmentsQuery);
        final List<FragmentDefinition> rslt = query.getResultList();
        return rslt;

    }

    @Override
    public FragmentDefinition getFragmentDefinition(String name) {
        final TypedQuery<FragmentDefinition> query = this.createCachedQuery(this.findFragmentByNameQuery);
        query.setParameter(this.nameParameter, name);

        final List<FragmentDefinition> list = query.getResultList();
        final FragmentDefinition rslt = DataAccessUtils.uniqueResult(list);
        return rslt;

    }

    @Override
    public FragmentDefinition getFragmentDefinitionByOwner(String ownerId) {
        final TypedQuery<FragmentDefinition> query = this.createCachedQuery(this.findFragmentByOwnerQuery);
        query.setParameter(this.ownerParameter, ownerId);

        final List<FragmentDefinition> list = query.getResultList();
        final FragmentDefinition rslt = DataAccessUtils.uniqueResult(list);
        return rslt;
    }

    @Override
    @PortalTransactional
    public void updateFragmentDefinition(FragmentDefinition fd) {

        Validate.notNull(fd, "FragmentDefinition can not be null");
        this.getEntityManager().persist(fd);

    }

    @Override
    @PortalTransactional
    public void removeFragmentDefinition(FragmentDefinition fd) {

        Validate.notNull(fd, "FragmentDefinition can not be null");
        final FragmentDefinition persistentFragmentDefinition;
        final EntityManager entityManager = this.getEntityManager();
        if (entityManager.contains(fd)) {
            persistentFragmentDefinition = fd;
        } else {
            persistentFragmentDefinition = entityManager.merge(fd);
        }

        entityManager.remove(persistentFragmentDefinition);
    }

}