content: /*
   * 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 org.apache.chemistry.opencmis.fileshare;
  
  import java.util.GregorianCalendar;
  import java.util.HashSet;
  import java.util.Set;
  import java.util.TimeZone;
  
  import org.apache.chemistry.opencmis.commons.PropertyIds;
  import org.apache.chemistry.opencmis.commons.data.Properties;
  import org.apache.chemistry.opencmis.commons.data.PropertyData;
  import org.apache.chemistry.opencmis.commons.data.PropertyDateTime;
  import org.apache.chemistry.opencmis.commons.data.PropertyId;
  import org.apache.chemistry.opencmis.commons.data.PropertyString;
  import org.apache.chemistry.opencmis.commons.exceptions.CmisInvalidArgumentException;
  
  public final class FileShareUtils {
  
      private FileShareUtils() {
      }
  
      /**
       * Returns the boolean value of the given value or the default value if the
       * given value is <code>null</code>.
       */
      public static boolean getBooleanParameter(Boolean value, boolean def) {
          if (value == null) {
              return def;
          }
  
          return value.booleanValue();
      }
  
      /**
       * Converts milliseconds into a {@link GregorianCalendar} object, setting
       * the timezone to GMT and cutting milliseconds off.
       */
      public static GregorianCalendar millisToCalendar(long millis) {
          GregorianCalendar result = new GregorianCalendar();
          result.setTimeZone(TimeZone.getTimeZone("GMT"));
          result.setTimeInMillis((long) (Math.ceil((double) millis / 1000) * 1000));
  
          return result;
      }
  
      /**
       * Splits a filter statement into a collection of properties. If
       * <code>filter</code> is <code>null</code>, empty or one of the properties
       * is '*' , an empty collection will be returned.
       */
      public static Set<String> splitFilter(String filter) {
          if (filter == null) {
              return null;
          }
  
          if (filter.trim().length() == 0) {
              return null;
          }
  
          Set<String> result = new HashSet<String>();
          for (String s : filter.split(",")) {
              s = s.trim();
              if (s.equals("*")) {
                  return null;
              } else if (s.length() > 0) {
                  result.add(s);
              }
          }
  
          // set a few base properties
          // query name == id (for base type properties)
          result.add(PropertyIds.OBJECT_ID);
          result.add(PropertyIds.OBJECT_TYPE_ID);
          result.add(PropertyIds.BASE_TYPE_ID);
  
          return result;
      }
  
      /**
       * Gets the type id from a set of properties.
       */
      public static String getObjectTypeId(Properties properties) {
          PropertyData<?> typeProperty = properties.getProperties().get(PropertyIds.OBJECT_TYPE_ID);
          if (!(typeProperty instanceof PropertyId)) {
              throw new CmisInvalidArgumentException("Type Id must be set!");
          }
  
          String typeId = ((PropertyId) typeProperty).getFirstValue();
          if (typeId == null) {
              throw new CmisInvalidArgumentException("Type Id must be set!");
          }
  
          return typeId;
      }
  
      /**
       * Returns the first value of an id property.
       */
      public static String getIdProperty(Properties properties, String name) {
          PropertyData<?> property = properties.getProperties().get(name);
          if (!(property instanceof PropertyId)) {
              return null;
          }
  
          return ((PropertyId) property).getFirstValue();
      }
  
      /**
       * Returns the first value of a string property.
       */
      public static String getStringProperty(Properties properties, String name) {
          PropertyData<?> property = properties.getProperties().get(name);
          if (!(property instanceof PropertyString)) {
              return null;
          }
  
          return ((PropertyString) property).getFirstValue();
      }
  
      /**
       * Returns the first value of a datetime property.
       */
      public static GregorianCalendar getDateTimeProperty(Properties properties, String name) {
          PropertyData<?> property = properties.getProperties().get(name);
          if (!(property instanceof PropertyDateTime)) {
              return null;
          }
  
          return ((PropertyDateTime) property).getFirstValue();
      }
  }
  