﻿
// https://github.com/apache/metamodel/blob/b0cfe3aed447769f752743ac1753ebed90adaad2/core/src/main/java/org/apache/metamodel/data/DocumentSource.java

using org.apache.metamodel.j2n;
using org.apache.metamodel.j2n.io;
/**
* 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.
*/
namespace org.apache.metamodel.core.data
{
    /**
     * A source of documents to be used for building/detecting a schema or table.
     */
    public interface DocumentSource : NCloseable
    {
        /**
         * Gets the next sample from the source, or returns null if there are no
         * more documents available.
         * 
         * @return
         */
        Document next();

        //@Override
        void close();
    } // DocumentSource interface
} // org.apache.metamodel.core.data
