com.gst.organisation.staff.service.StaffWritePlatformServiceJpaRepositoryImpl.java Source code

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Here is the source code for com.gst.organisation.staff.service.StaffWritePlatformServiceJpaRepositoryImpl.java

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/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF 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
 *
 * 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.gst.organisation.staff.service;

import java.util.Map;

import javax.persistence.PersistenceException;

import org.apache.commons.lang.StringUtils;
import org.apache.commons.lang.exception.ExceptionUtils;
import com.gst.infrastructure.core.api.JsonCommand;
import com.gst.infrastructure.core.data.CommandProcessingResult;
import com.gst.infrastructure.core.data.CommandProcessingResultBuilder;
import com.gst.infrastructure.core.exception.PlatformDataIntegrityException;
import com.gst.organisation.office.domain.Office;
import com.gst.organisation.office.domain.OfficeRepositoryWrapper;
import com.gst.organisation.staff.domain.Staff;
import com.gst.organisation.staff.domain.StaffRepository;
import com.gst.organisation.staff.exception.StaffNotFoundException;
import com.gst.organisation.staff.serialization.StaffCommandFromApiJsonDeserializer;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.dao.DataIntegrityViolationException;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

@Service
public class StaffWritePlatformServiceJpaRepositoryImpl implements StaffWritePlatformService {

    private final static Logger logger = LoggerFactory.getLogger(StaffWritePlatformServiceJpaRepositoryImpl.class);

    private final StaffCommandFromApiJsonDeserializer fromApiJsonDeserializer;
    private final StaffRepository staffRepository;
    private final OfficeRepositoryWrapper officeRepositoryWrapper;

    @Autowired
    public StaffWritePlatformServiceJpaRepositoryImpl(
            final StaffCommandFromApiJsonDeserializer fromApiJsonDeserializer,
            final StaffRepository staffRepository, final OfficeRepositoryWrapper officeRepositoryWrapper) {

        this.fromApiJsonDeserializer = fromApiJsonDeserializer;
        this.staffRepository = staffRepository;
        this.officeRepositoryWrapper = officeRepositoryWrapper;
    }

    @Transactional
    @Override
    public CommandProcessingResult createStaff(final JsonCommand command) {

        try {
            this.fromApiJsonDeserializer.validateForCreate(command.json());

            final Long officeId = command.longValueOfParameterNamed("officeId");

            final Office staffOffice = this.officeRepositoryWrapper.findOneWithNotFoundDetection(officeId);
            final Staff staff = Staff.fromJson(staffOffice, command);

            this.staffRepository.save(staff);

            return new CommandProcessingResultBuilder() //
                    .withCommandId(command.commandId()) //
                    .withEntityId(staff.getId()).withOfficeId(officeId) //
                    .build();
        } catch (final DataIntegrityViolationException dve) {
            handleStaffDataIntegrityIssues(command, dve.getMostSpecificCause(), dve);
            return CommandProcessingResult.empty();
        } catch (final PersistenceException dve) {
            Throwable throwable = ExceptionUtils.getRootCause(dve.getCause());
            handleStaffDataIntegrityIssues(command, throwable, dve);
            return CommandProcessingResult.empty();
        }
    }

    @Transactional
    @Override
    public CommandProcessingResult updateStaff(final Long staffId, final JsonCommand command) {

        try {
            this.fromApiJsonDeserializer.validateForUpdate(command.json(), staffId);

            final Staff staffForUpdate = this.staffRepository.findOne(staffId);
            if (staffForUpdate == null) {
                throw new StaffNotFoundException(staffId);
            }

            final Map<String, Object> changesOnly = staffForUpdate.update(command);

            if (changesOnly.containsKey("officeId")) {
                final Long officeId = (Long) changesOnly.get("officeId");
                final Office newOffice = this.officeRepositoryWrapper.findOneWithNotFoundDetection(officeId);
                staffForUpdate.changeOffice(newOffice);
            }

            if (!changesOnly.isEmpty()) {
                this.staffRepository.saveAndFlush(staffForUpdate);
            }

            return new CommandProcessingResultBuilder().withCommandId(command.commandId()).withEntityId(staffId)
                    .withOfficeId(staffForUpdate.officeId()).with(changesOnly).build();
        } catch (final DataIntegrityViolationException dve) {
            handleStaffDataIntegrityIssues(command, dve.getMostSpecificCause(), dve);
            return CommandProcessingResult.empty();
        } catch (final PersistenceException dve) {
            Throwable throwable = ExceptionUtils.getRootCause(dve.getCause());
            handleStaffDataIntegrityIssues(command, throwable, dve);
            return CommandProcessingResult.empty();
        }
    }

    /*
     * Guaranteed to throw an exception no matter what the data integrity issue
     * is.
     */
    private void handleStaffDataIntegrityIssues(final JsonCommand command, final Throwable realCause,
            final Exception dve) {

        if (realCause.getMessage().contains("external_id")) {

            final String externalId = command.stringValueOfParameterNamed("externalId");
            throw new PlatformDataIntegrityException("error.msg.staff.duplicate.externalId",
                    "Staff with externalId `" + externalId + "` already exists", "externalId", externalId);
        } else if (realCause.getMessage().contains("display_name")) {
            final String lastname = command.stringValueOfParameterNamed("lastname");
            String displayName = lastname;
            if (!StringUtils.isBlank(displayName)) {
                final String firstname = command.stringValueOfParameterNamed("firstname");
                displayName = lastname + ", " + firstname;
            }
            throw new PlatformDataIntegrityException("error.msg.staff.duplicate.displayName",
                    "A staff with the given display name '" + displayName + "' already exists", "displayName",
                    displayName);
        }

        logger.error(dve.getMessage(), dve);
        throw new PlatformDataIntegrityException("error.msg.staff.unknown.data.integrity.issue",
                "Unknown data integrity issue with resource: " + realCause.getMessage());
    }
}