org.finra.herd.dao.impl.JobDefinitionDaoImpl.java Source code

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Here is the source code for org.finra.herd.dao.impl.JobDefinitionDaoImpl.java

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/*
* Copyright 2015 herd contributors
*
* 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.finra.herd.dao.impl;

import java.util.ArrayList;
import java.util.Collection;
import java.util.List;

import javax.persistence.criteria.CriteriaBuilder;
import javax.persistence.criteria.CriteriaQuery;
import javax.persistence.criteria.Join;
import javax.persistence.criteria.Order;
import javax.persistence.criteria.Predicate;
import javax.persistence.criteria.Root;

import org.apache.commons.collections4.CollectionUtils;
import org.apache.commons.lang3.StringUtils;
import org.springframework.stereotype.Repository;

import org.finra.herd.dao.JobDefinitionDao;
import org.finra.herd.model.jpa.JobDefinitionEntity;
import org.finra.herd.model.jpa.JobDefinitionEntity_;
import org.finra.herd.model.jpa.NamespaceEntity;
import org.finra.herd.model.jpa.NamespaceEntity_;

@Repository
public class JobDefinitionDaoImpl extends AbstractHerdDao implements JobDefinitionDao {
    @Override
    public JobDefinitionEntity getJobDefinitionByAltKey(String namespace, String jobName) {
        // Create the criteria builder and the criteria.
        CriteriaBuilder builder = entityManager.getCriteriaBuilder();
        CriteriaQuery<JobDefinitionEntity> criteria = builder.createQuery(JobDefinitionEntity.class);

        // The criteria root is the job definition.
        Root<JobDefinitionEntity> jobDefinition = criteria.from(JobDefinitionEntity.class);

        // Join to the other tables we can filter on.
        Join<JobDefinitionEntity, NamespaceEntity> namespaceJoin = jobDefinition
                .join(JobDefinitionEntity_.namespace);

        // Create the standard restrictions (i.e. the standard where clauses).
        Predicate namespaceRestriction = builder.equal(builder.upper(namespaceJoin.get(NamespaceEntity_.code)),
                namespace.toUpperCase());
        Predicate jobNameRestriction = builder.equal(builder.upper(jobDefinition.get(JobDefinitionEntity_.name)),
                jobName.toUpperCase());

        criteria.select(jobDefinition).where(builder.and(namespaceRestriction, jobNameRestriction));

        return executeSingleResultQuery(criteria, String.format(
                "Found more than one Activiti job definition with parameters {namespace=\"%s\", jobName=\"%s\"}.",
                namespace, jobName));
    }

    @Override
    public JobDefinitionEntity getJobDefinitionByProcessDefinitionId(String processDefinitionId) {
        // Create the criteria builder and the criteria.
        CriteriaBuilder builder = entityManager.getCriteriaBuilder();
        CriteriaQuery<JobDefinitionEntity> criteria = builder.createQuery(JobDefinitionEntity.class);

        // The criteria root is the job definition.
        Root<JobDefinitionEntity> jobDefinition = criteria.from(JobDefinitionEntity.class);

        // Create the standard restrictions (i.e. the standard where clauses).
        Predicate namespaceRestriction = builder.equal(jobDefinition.get(JobDefinitionEntity_.activitiId),
                processDefinitionId);

        criteria.select(jobDefinition).where(builder.and(namespaceRestriction, namespaceRestriction));

        return executeSingleResultQuery(criteria,
                String.format("Found more than one Activiti job definition with processDefinitionId = \"%s\".",
                        processDefinitionId));
    }

    @Override
    public List<JobDefinitionEntity> getJobDefinitionsByFilter(String namespace, String jobName) {
        // Create the criteria builder and the criteria.
        CriteriaBuilder builder = entityManager.getCriteriaBuilder();
        CriteriaQuery<JobDefinitionEntity> criteria = builder.createQuery(JobDefinitionEntity.class);

        // The criteria root is the job definition.
        Root<JobDefinitionEntity> jobDefinitionEntityRoot = criteria.from(JobDefinitionEntity.class);

        // Join to the other tables we can filter on.
        Join<JobDefinitionEntity, NamespaceEntity> namespaceEntityJoin = jobDefinitionEntityRoot
                .join(JobDefinitionEntity_.namespace);

        // Create the standard restrictions (i.e. the standard where clauses).
        List<Predicate> predicates = new ArrayList<>();
        if (StringUtils.isNotBlank(namespace)) {
            predicates.add(builder.equal(builder.upper(namespaceEntityJoin.get(NamespaceEntity_.code)),
                    namespace.toUpperCase()));
        }
        if (StringUtils.isNotBlank(jobName)) {
            predicates.add(builder.equal(builder.upper(jobDefinitionEntityRoot.get(JobDefinitionEntity_.name)),
                    jobName.toUpperCase()));
        }

        // Order the results by namespace and job name.
        List<Order> orderBy = new ArrayList<>();
        orderBy.add(builder.asc(namespaceEntityJoin.get(NamespaceEntity_.code)));
        orderBy.add(builder.asc(jobDefinitionEntityRoot.get(JobDefinitionEntity_.name)));

        // Add the clauses for the query.
        criteria.select(jobDefinitionEntityRoot)
                .where(builder.and(predicates.toArray(new Predicate[predicates.size()]))).orderBy(orderBy);

        // Execute the query and return the result list.
        return entityManager.createQuery(criteria).getResultList();
    }

    @Override
    public List<JobDefinitionEntity> getJobDefinitionsByFilter(Collection<String> namespaces, String jobName) {
        // Create the criteria builder and the criteria.
        CriteriaBuilder builder = entityManager.getCriteriaBuilder();
        CriteriaQuery<JobDefinitionEntity> criteria = builder.createQuery(JobDefinitionEntity.class);

        // The criteria root is the job definition.
        Root<JobDefinitionEntity> jobDefinitionEntityRoot = criteria.from(JobDefinitionEntity.class);

        // Join to the other tables we can filter on.
        Join<JobDefinitionEntity, NamespaceEntity> namespaceEntityJoin = jobDefinitionEntityRoot
                .join(JobDefinitionEntity_.namespace);

        // Create the standard restrictions (i.e. the standard where clauses).
        List<Predicate> predicates = new ArrayList<>();
        if (CollectionUtils.isNotEmpty(namespaces)) {
            predicates.add(namespaceEntityJoin.get(NamespaceEntity_.code).in(namespaces));
        }
        if (StringUtils.isNotBlank(jobName)) {
            predicates.add(builder.equal(builder.upper(jobDefinitionEntityRoot.get(JobDefinitionEntity_.name)),
                    jobName.toUpperCase()));
        }

        // Order the results by namespace and job name.
        List<Order> orderBy = new ArrayList<>();
        orderBy.add(builder.asc(namespaceEntityJoin.get(NamespaceEntity_.code)));
        orderBy.add(builder.asc(jobDefinitionEntityRoot.get(JobDefinitionEntity_.name)));

        // Add the clauses for the query.
        criteria.select(jobDefinitionEntityRoot)
                .where(builder.and(predicates.toArray(new Predicate[predicates.size()]))).orderBy(orderBy);

        // Execute the query and return the result list.
        return entityManager.createQuery(criteria).getResultList();
    }
}