/**
    * Copyright 2005-2014 The Kuali Foundation
    *
    * Licensed under the Educational Community 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.opensource.org/licenses/ecl2.php
    *
   * 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.kuali.rice.coreservice.impl.namespace;
  
  import org.apache.commons.lang.StringUtils;
  import org.kuali.rice.core.api.criteria.QueryByCriteria;
  import org.kuali.rice.core.api.criteria.QueryResults;
  import org.kuali.rice.core.api.exception.RiceIllegalArgumentException;
  import org.kuali.rice.coreservice.api.namespace.Namespace;
  import org.kuali.rice.coreservice.api.namespace.NamespaceService;
  import org.kuali.rice.krad.data.CompoundKey;
  import org.kuali.rice.krad.data.DataObjectService;
  import org.springframework.beans.factory.annotation.Required;
  
  import java.util.ArrayList;
  import java.util.Collections;
  import java.util.HashMap;
  import java.util.List;
  
  import static java.util.Collections.singletonMap;
  
  public class NamespaceServiceImpl implements NamespaceService {
      private DataObjectService dataObjectService;
  
      @Override
  	public Namespace getNamespace(String code) {
          if (StringUtils.isBlank(code)) {
              throw new RiceIllegalArgumentException("the code is blank");
          }
          return NamespaceBo.to(dataObjectService.find(NamespaceBo.class, new CompoundKey(singletonMap("code", code))));
  	}
  
      @Override
      public List<Namespace> findAllNamespaces() {
          QueryResults<NamespaceBo> namespaceBos = dataObjectService.findMatching(
                      NamespaceBo.class,QueryByCriteria.Builder.andAttributes(new HashMap<String, String>()).build());
          List<Namespace> namespaces = new ArrayList<Namespace>();
          if(namespaceBos != null){
              for (NamespaceBo bo : namespaceBos.getResults()) {
                  namespaces.add(NamespaceBo.to(bo));
              }
          }
  
          return Collections.unmodifiableList(namespaces);
      }
  
      public DataObjectService getDataObjectService() {
          return dataObjectService;
      }
      @Required
      public void setDataObjectService(DataObjectService dataObjectService) {
          this.dataObjectService = dataObjectService;
      }
  }