opencmis/opencmis-server/opencmis-server-inmemory/src/main/java/org/apache/opencmis/inmemory/server/InMemoryRepositoryServiceImpl.java

/*
 * 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.opencmis.inmemory.server;

import java.math.BigInteger;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.ListIterator;

import org.apache.opencmis.commons.api.ExtensionsData;
import org.apache.opencmis.commons.api.TypeDefinition;
import org.apache.opencmis.commons.api.TypeDefinitionContainer;
import org.apache.opencmis.commons.api.TypeDefinitionList;
import org.apache.opencmis.commons.exceptions.CmisInvalidArgumentException;
import org.apache.opencmis.commons.exceptions.CmisObjectNotFoundException;
import org.apache.opencmis.commons.impl.dataobjects.TypeDefinitionListImpl;
import org.apache.opencmis.commons.provider.RepositoryInfoData;
import org.apache.opencmis.inmemory.storedobj.api.StoreManager;
import org.apache.opencmis.server.spi.CallContext;
import org.apache.opencmis.server.spi.CmisRepositoryService;

public class InMemoryRepositoryServiceImpl extends AbstractServiceImpl implements
    CmisRepositoryService {

  public InMemoryRepositoryServiceImpl(StoreManager storeManager) {
    super(storeManager);
  }

  public RepositoryInfoData getRepositoryInfo(CallContext context, String repositoryId,
      ExtensionsData extension) {

    // Attach the CallContext to a thread local context that can be accessed from everywhere
    RuntimeContext.attachCfg(context);

    RepositoryInfoData repoInfo = getRepositoryInfoFromStoreManager(repositoryId);

    return repoInfo;
  }

  public List<RepositoryInfoData> getRepositoryInfos(CallContext context, ExtensionsData extension) {

    try {
      // Attach the CallContext to a thread local context that can be accessed from everywhere
      RuntimeContext.attachCfg(context);

      List<RepositoryInfoData> res = new ArrayList<RepositoryInfoData>();
      List<String> repIds = fStoreManager.getAllRepositoryIds();
      for (String repId : repIds) {
        res.add(fStoreManager.getRepositoryInfo(repId));
      }
      return res;
    }
    finally {
      RuntimeContext.remove();
    }
  }

  public TypeDefinitionList getTypeChildren(CallContext context, String repositoryId,
      String typeId, Boolean includePropertyDefinitions, BigInteger maxItems, BigInteger skipCount,
      ExtensionsData extension) {

    try {
      // Attach the CallContext to a thread local context that can be accessed from everywhere
      RuntimeContext.attachCfg(context);

      getRepositoryInfoFromStoreManager(repositoryId); // just to check if repository exists

      int skip = skipCount == null ? 0 : skipCount.intValue();
      int max = maxItems == null ? -1 : maxItems.intValue();

      TypeDefinitionListImpl result = new TypeDefinitionListImpl();
      List<TypeDefinitionContainer> children;
      if (typeId == null) {
        // spec says that base types must be returned in this case
        children = fStoreManager.getRootTypes(repositoryId);
      }
      else {
        children = getTypeDescendants(context, repositoryId, typeId, BigInteger.valueOf(1),
            includePropertyDefinitions, null);
      }
      result.setNumItems(BigInteger.valueOf(children.size()));
      result.setHasMoreItems(children.size() > max - skip);
      List<TypeDefinition> childrenTypes = new ArrayList<TypeDefinition>();
      ListIterator<TypeDefinitionContainer> it = children.listIterator(skip);
      if (max < 0)
        max = children.size();
      for (int i = skip; i < max + skip && it.hasNext(); i++)
        childrenTypes.add(it.next().getTypeDefinition());

      result.setList(childrenTypes);
      return result;
    }
    finally {
      RuntimeContext.remove();
    }
  }

  public TypeDefinition getTypeDefinition(CallContext context, String repositoryId, String typeId,
      ExtensionsData extension) {

    try {
      // Attach the CallContext to a thread local context that can be accessed from everywhere
      RuntimeContext.attachCfg(context);

      getRepositoryInfoFromStoreManager(repositoryId); // just to check if repository exists

      TypeDefinitionContainer tc = fStoreManager.getTypeById(repositoryId, typeId);
      if (tc != null) {
        return tc.getTypeDefinition();
      }
      else
        throw new CmisObjectNotFoundException("unknown type id: " + typeId);
    }
    finally {
      RuntimeContext.remove();
    }
  }

  public List<TypeDefinitionContainer> getTypeDescendants(CallContext context, String repositoryId,
      String typeId, BigInteger depth, Boolean includePropertyDefinitions, ExtensionsData extension) {

    try {
      // Attach the CallContext to a thread local context that can be accessed from everywhere
      RuntimeContext.attachCfg(context);

      getRepositoryInfoFromStoreManager(repositoryId); // just to check if repository exists

      if (depth != null && depth.intValue() == 0)
        throw new CmisInvalidArgumentException("depth == 0 is illegal in getTypeDescendants");

      List<TypeDefinitionContainer> result = null;
      if (typeId == null) {
        // spec says that depth must be ignored in this case
        Collection<TypeDefinitionContainer> tmp = fStoreManager.getTypeDefinitionList(repositoryId,
            includePropertyDefinitions);
        result = new ArrayList<TypeDefinitionContainer> (tmp);
      }
      else {
        TypeDefinitionContainer tc = fStoreManager.getTypeById(repositoryId, typeId,
            includePropertyDefinitions, depth==null ? -1 : depth.intValue());
        if (tc == null) 
          throw new CmisInvalidArgumentException("unknown type id: " + typeId);
        else
          result = tc.getChildren();
      }

      return result;
    }
    finally {
      RuntimeContext.remove();
    }
  }

  private RepositoryInfoData getRepositoryInfoFromStoreManager(String repositoryId) {
    RepositoryInfoData repoInfo = fStoreManager.getRepositoryInfo(repositoryId);
    if (null == repoInfo || !repoInfo.getRepositoryId().equals(repositoryId)) {
      throw new CmisInvalidArgumentException("Unknown repository: " + repositoryId);
    }
    return repoInfo;
  }

}