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QuestDB is High Performance Time Series Database

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 * Copyright (C) 2014-2016 Appsicle
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 * This program is free software: you can redistribute it and/or  modify
 * it under the terms of the GNU Affero General Public License, version 3,
 * as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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package com.questdb.ql.impl;

import com.questdb.Partition;
import com.questdb.factory.JournalReaderFactory;
import com.questdb.factory.configuration.JournalMetadata;
import com.questdb.ql.PartitionCursor;
import com.questdb.ql.PartitionSlice;
import com.questdb.ql.PartitionSource;
import com.questdb.ql.StorageFacade;
import com.questdb.std.AbstractImmutableIterator;
import com.questdb.std.CharSink;
import com.questdb.std.FileNameExtractorCharSequence;

public class NoOpJournalPartitionSource extends AbstractImmutableIterator implements PartitionSource, PartitionCursor {

    private final JournalMetadata metadata;

    public NoOpJournalPartitionSource(JournalMetadata metadata) {
        this.metadata = metadata;
    }

    @Override
    public JournalMetadata getMetadata() {
        return metadata;
    }

    @Override
    public PartitionCursor prepareCursor(JournalReaderFactory readerFactory) {
        return this;
    }

    @Override
    public Partition getPartition(int index) {
        return null;
    }

    @Override
    public StorageFacade getStorageFacade() {
        return null;
    }

    @Override
    public void toTop() {
    }

    @Override
    public boolean hasNext() {
        return false;
    }

    @Override
    public PartitionSlice next() {
        return null;
    }

    @Override
    public void toSink(CharSink sink) {
        sink.put('{');
        sink.putQuoted("op").put(':').putQuoted("NoOpJournalPartitionSource").put(',');
        sink.putQuoted("journal").put(':').putQuoted(FileNameExtractorCharSequence.get(metadata.getLocation()));
        sink.put('}');
    }
}