asterix-common/src/main/java/edu/uci/ics/asterix/common/config/DatasetConfig.java

/*
 * Copyright 2009-2011 by The Regents of the University of California
 * 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 from
 * 
 *     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 edu.uci.ics.asterix.common.config;

public class DatasetConfig {

    /*
     * We have three kinds of datasets. INTERNAL: A dataset with data persisted
     * in ASTERIX storage. The dataset is populated either using a load
     * statement or using insert statement. EXTERNAL: A dataset with data
     * residing outside ASTERIX. As such ASTERIX does not maintain any indexes
     * on the data. The data for the dataset is fetched as and when required
     * from an external data source using an adapter. FEED : A dataset that can
     * be considered as a hybrid of INTERNAL and EXTERNAL dataset. A FEED
     * dataset is INTERNAL in the sense that the data is persisted within
     * ASTERIX storage and has associated indexes that are maintained by
     * ASTERIX. However the dataset is initially populated with data fetched
     * from an external datasource using an adapter, in a manner similar to an
     * EXTERNAL dataset. A FEED dataset continuously receives data from the
     * associated adapter.
     */
    public enum DatasetType {
        INTERNAL,
        EXTERNAL,
        FEED
    }

    public enum IndexType {
        BTREE,        
        RTREE,
        WORD_INVIX,
        NGRAM_INVIX,
        FUZZY_WORD_INVIX,
        FUZZY_NGRAM_INVIX
    }

}