Alachisoft.NCache.Common.DataReader.RecordSetEnumeratorImpl Maven / Gradle / Ivy

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package Alachisoft.NCache.Common.DataReader;


//  Copyright (c) 2020 Alachisoft
//  
//  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

public class RecordSetEnumeratorImpl implements RecordSetEnumerator {
    private RecordSet _recordSet = null;
    private RecordRow _current = null;
    private int _rowId = -1;

    public RecordSetEnumeratorImpl(RecordSet recordSet) {
        _recordSet = recordSet;
    }

    public final RecordRow getCurrent() {
        return _current;
    }

    public final ColumnCollection getColumnCollection() {
        return _recordSet != null ? _recordSet.getColumnMetaData() : null;
    }

    public final boolean moveNext() {
        if (_recordSet != null) {
            if (_recordSet.containsRow(++_rowId)) {
                _current = _recordSet.getRow(_rowId);
                _recordSet.removeRow(_rowId);
                return true;
            }
        }
        return false;
    }

    @Override
    public void close() {
        _recordSet = null;
        _current = null;
    }

}