gdataadminservice.java

一套java版本的搜索引擎源码

/** 
 * Copyright 2004 The Apache Software Foundation 
 * 
 * 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.apache.lucene.gdata.server.administration;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.lucene.gdata.data.GDataAccount;
import org.apache.lucene.gdata.data.ServerBaseFeed;
import org.apache.lucene.gdata.server.GDataResponse;
import org.apache.lucene.gdata.server.GDataService;
import org.apache.lucene.gdata.server.ServiceException;
import org.apache.lucene.gdata.server.registry.ProvidedService;
import org.apache.lucene.gdata.storage.StorageException;

/**
 * default implementation of the
 * {@link org.apache.lucene.gdata.server.administration.AdminService} interface.
 * 
 * @author Simon Willnauer
 * 
 */
public class GDataAdminService extends GDataService implements AdminService {
    private static final Log LOG = LogFactory.getLog(GDataAdminService.class);

    /**
     * @throws ServiceException
     */
    public GDataAdminService() throws ServiceException {
        super();

    }

    /**
     * @see org.apache.lucene.gdata.server.administration.AdminService#createFeed(org.apache.lucene.gdata.data.ServerBaseFeed,
     *      org.apache.lucene.gdata.data.GDataAccount)
     */
    public void createFeed(final ServerBaseFeed feed, final GDataAccount account)
            throws ServiceException {
        if (feed == null)
            throw new ServiceException("Can not create feed -- feed is null",
                    GDataResponse.BAD_REQUEST);
        if (account == null)
            throw new ServiceException(
                    "Can not create feed -- account is null",
                    GDataResponse.UNAUTHORIZED);
        if (feed.getId() == null)
            throw new ServiceException("Feed ID is null can not create feed",
                    GDataResponse.BAD_REQUEST);
        if (account.getName() == null)
            throw new ServiceException(
                    "Account name is null -- can't create feed",
                    GDataResponse.UNAUTHORIZED);
        try {
            feed.setUpdated(getCurrentDateTime());
            feed.setAccount(account);
            this.storage.storeFeed(feed, account.getName());
        } catch (StorageException e) {
            if (LOG.isInfoEnabled())
                LOG.info("Can not save feed -- " + e.getMessage(), e);
            throw new ServiceException("Can not save feed", e,
                    GDataResponse.BAD_REQUEST);
        }

    }

    /**
     * @see org.apache.lucene.gdata.server.administration.AdminService#updateFeed(org.apache.lucene.gdata.data.ServerBaseFeed,
     *      org.apache.lucene.gdata.data.GDataAccount)
     */
    public void updateFeed(ServerBaseFeed feed, GDataAccount account)
            throws ServiceException {
        if (feed == null)
            throw new ServiceException("Can not update null feed",
                    GDataResponse.BAD_REQUEST);
        if (account == null)
            throw new ServiceException(
                    "Can not update feed -- account is null",
                    GDataResponse.UNAUTHORIZED);
        if (feed.getId() == null)
            throw new ServiceException("Feed ID is null can not update feed",
                    GDataResponse.BAD_REQUEST);
        if (account.getName() == null)
            throw new ServiceException(
                    "Account name is null -- can't update feed",
                    GDataResponse.UNAUTHORIZED);
        try {
            feed.setAccount(account);
            feed.setUpdated(getCurrentDateTime());
            this.storage.updateFeed(feed, account.getName());
        } catch (StorageException e) {
            if (LOG.isInfoEnabled())
                LOG.info("Can not update feed -- " + e.getMessage(), e);
            throw new ServiceException("Can not update feed", e,
                    GDataResponse.BAD_REQUEST);
        }

    }

    /**
     * @see org.apache.lucene.gdata.server.administration.AdminService#deleteFeed(org.apache.lucene.gdata.data.ServerBaseFeed)
     */
    public void deleteFeed(ServerBaseFeed feed) throws ServiceException {
        if (feed == null)
            throw new ServiceException("Can not delete null feed",
                    GDataResponse.BAD_REQUEST);
        if (feed.getId() == null)
            throw new ServiceException("Feed ID is null can not delete feed",
                    GDataResponse.BAD_REQUEST);
        String serviceid = null;
        try {
            serviceid = this.storage.getServiceForFeed(feed.getId());
            this.storage.deleteFeed(feed.getId());
        } catch (StorageException e) {
            if (LOG.isInfoEnabled())
                LOG.info("Can not delete feed -- " + e.getMessage(), e);
            throw new ServiceException("Can not delete feed", e,
                    GDataResponse.BAD_REQUEST);
        }
        ProvidedService service = this.registry.getProvidedService(serviceid);
        feed.setServiceConfig(service);
        this.entryEventMediator.allEntriesDeleted(feed);

    }

    /**
     * @see org.apache.lucene.gdata.server.administration.AdminService#createAccount(org.apache.lucene.gdata.data.GDataAccount)
     */
    public void createAccount(GDataAccount account) throws ServiceException {
        if (account == null)
            throw new ServiceException("Can not save null account",
                    GDataResponse.BAD_REQUEST);
        try {
            this.storage.storeAccount(account);
        } catch (StorageException e) {
            if (LOG.isInfoEnabled())
                LOG.info("Can not save account -- " + e.getMessage(), e);
            throw new ServiceException("Can not save account", e,
                    GDataResponse.BAD_REQUEST);
        }
    }

    /**
     * @see org.apache.lucene.gdata.server.administration.AdminService#deleteAccount(org.apache.lucene.gdata.data.GDataAccount)
     */
    public void deleteAccount(GDataAccount account) throws ServiceException {
        if (account == null)
            throw new ServiceException("Can not delete null account",
                    GDataResponse.BAD_REQUEST);
        try {
            this.storage.deleteAccount(account.getName());
        } catch (StorageException e) {
            if (LOG.isInfoEnabled())
                LOG.info("Can not save account -- " + e.getMessage(), e);
            throw new ServiceException("Can not save account", e,
                    GDataResponse.BAD_REQUEST);
        }
    }

    /**
     * @see org.apache.lucene.gdata.server.administration.AdminService#updateAccount(org.apache.lucene.gdata.data.GDataAccount)
     */
    public void updateAccount(GDataAccount account) throws ServiceException {
        if (account == null)
            throw new ServiceException("Can not update null account",
                    GDataResponse.BAD_REQUEST);
        try {
            this.storage.updateAccount(account);
        } catch (StorageException e) {
            if (LOG.isInfoEnabled())
                LOG.info("Can not save account -- " + e.getMessage(), e);
            throw new ServiceException("Can not save account", e,
                    GDataResponse.BAD_REQUEST);
        }
    }

    /**
     * @see org.apache.lucene.gdata.server.administration.AdminService#getAccount(java.lang.String)
     */
    public GDataAccount getAccount(String accountName) throws ServiceException {
        if (accountName == null)
            throw new ServiceException("Can not get null account",
                    GDataResponse.BAD_REQUEST);
        try {
            return this.storage.getAccount(accountName);
        } catch (StorageException e) {
            if (LOG.isInfoEnabled())
                LOG.info("Can not get account -- " + e.getMessage(), e);
            throw new ServiceException("Can not get account", e,
                    GDataResponse.BAD_REQUEST);
        }

    }

    /**
     * @see org.apache.lucene.gdata.server.administration.AdminService#getFeedOwningAccount(java.lang.String)
     */
    public GDataAccount getFeedOwningAccount(String feedId)
            throws ServiceException {
        if (feedId == null)
            throw new ServiceException(
                    "Can not get account - feed id must not be null",
                    GDataResponse.BAD_REQUEST);
        try {
            String accountName = this.storage.getAccountNameForFeedId(feedId);
            return this.storage.getAccount(accountName);

        } catch (StorageException e) {
            if (LOG.isInfoEnabled())
                LOG.info(
                        "Can not get account for feed Id -- " + e.getMessage(),
                        e);
            throw new ServiceException(
                    "Can not get account for the given feed id", e,
                    GDataResponse.BAD_REQUEST);
        }
    }

}