# DataSourceInformationRepositoryFactory.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.synapse.commons.datasource.factory;

    import org.apache.commons.logging.Log;
    import org.apache.commons.logging.LogFactory;
    import org.apache.synapse.commons.datasource.*;

    import java.util.List;
    import java.util.Properties;

    /**
     * Contains Factory methods that use to create DataSourceInformationRepository
     */
    public class DataSourceInformationRepositoryFactory {

        private static final Log log = LogFactory.getLog(DataSourceInformationRepositoryFactory.class);

        /**
         * Factory method to create a DataSourceInformationRepository
         * Use 'DataSourceRepositoryManager' as RepositoryListener
         *
         * @param properties DataSource properties
         * @return DataSourceInformationRepository instance
         */
        public static DataSourceInformationRepository createDataSourceInformationRepository(
                Properties properties) {
            return createDataSourceInformationRepository(
                    new DataSourceRepositoryManager(
                            new InMemoryDataSourceRepository(),
                            new JNDIBasedDataSourceRepository()), properties);
        }

        /**
         * Factory method to create a DataSourceInformationRepository
         *
         * @param listener   DataSourceInformationRepositoryListener
         * @param properties DataSource properties
         * @return a new, configured DataSourceInformationRepository instance
         */
        public static DataSourceInformationRepository createDataSourceInformationRepository(
                DataSourceInformationRepositoryListener listener, Properties properties) {

            if (log.isDebugEnabled()) {
                log.debug("Creating a new DataSourceInformationRepository");
            }
            DataSourceInformationRepository datasourceInformationRepository =
                    new DataSourceInformationRepository();

            datasourceInformationRepository.setRepositoryListener(listener);
            setupDataSourceInformationRepository(datasourceInformationRepository, properties);

            return datasourceInformationRepository;
        }

        /**
         * Setup an existing datasource information repository adding the provided
         * datasource information.
         *
         * @param datasourceInformationRepository
         *                   an existing data source information repository
         * @param properties DataSource properties
         */
        public static void setupDataSourceInformationRepository(
                DataSourceInformationRepository datasourceInformationRepository,
                Properties properties) {

            if (properties != null) {
                datasourceInformationRepository.configure(properties);
            }
            List<DataSourceInformation> sourceInformationList =
                    DataSourceInformationListFactory.createDataSourceInformationList(properties);

            for (DataSourceInformation information : sourceInformationList) {
                if (information != null) {
                    datasourceInformationRepository.addDataSourceInformation(information);
                }
            }
        }
    }