cavis/cavis-datavec/cavis-datavec-api/src/main/java/org/datavec/api/split/OutputStreamInputSplit.java

/*
 *  ******************************************************************************
 *  *
 *  *
 *  * This program and the accompanying materials are made available under the
 *  * terms of the Apache License, Version 2.0 which is available at
 *  * https://www.apache.org/licenses/LICENSE-2.0.
 *  *
 *  *  See the NOTICE file distributed with this work for additional
 *  *  information regarding copyright ownership.
 *  * 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.
 *  *
 *  * SPDX-License-Identifier: Apache-2.0
 *  *****************************************************************************
 */

package org.datavec.api.split;

import lombok.Getter;
import lombok.Setter;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.URI;
import java.util.Iterator;

public class OutputStreamInputSplit implements InputSplit {

    @Getter
    @Setter
    private OutputStream outputStream;


    public OutputStreamInputSplit(OutputStream outputStream) {
        this.outputStream = outputStream;
    }

    @Override
    public boolean canWriteToLocation(URI location) {
        return true;
    }

    @Override
    public String addNewLocation() {
        return null;
    }

    @Override
    public String addNewLocation(String location) {
        throw new UnsupportedOperationException();
    }

    @Override
    public void updateSplitLocations(boolean reset) {
        throw new UnsupportedOperationException();

    }

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

    @Override
    public void bootStrapForWrite() {

    }

    @Override
    public OutputStream openOutputStreamFor(String location) throws Exception {
        return outputStream;
    }

    @Override
    public InputStream openInputStreamFor(String location) throws Exception {
        throw new UnsupportedOperationException();
    }

    @Override
    public long length() {
        throw new UnsupportedOperationException();
    }

    @Override
    public URI[] locations() {
        return new URI[0];

    }

    @Override
    public Iterator<URI> locationsIterator() {
        throw new UnsupportedOperationException();
    }

    @Override
    public Iterator<String> locationsPathIterator() {
        throw new UnsupportedOperationException();

    }

    @Override
    public void reset() {
        //No op
        if(!resetSupported()) {
            throw new UnsupportedOperationException("Reset not supported from streams");
        }
    }

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

    /**
     * Close input/ output streams if any
     */
    @Override
    public void close() {
        try {
            outputStream.close();
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }


}