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Standard interfaces implemented throughout the library.
There is a newer version: 24.2-oss84-1
/*
 *    GeoTools - The Open Source Java GIS Toolkit
 *    http://geotools.org
 *
 *    (C) 2011, Open Source Geospatial Foundation (OSGeo)
 *    (C) 2005 Open Geospatial Consortium Inc.
 *
 *    All Rights Reserved. http://www.opengis.org/legal/
 */
package org.opengis.coverage.grid;

import java.io.IOException;
import org.opengis.parameter.GeneralParameterValue;
import org.opengis.parameter.InvalidParameterNameException;
import org.opengis.parameter.InvalidParameterValueException;
import org.opengis.parameter.ParameterNotFoundException;

/**
 * Support for writing grid coverages into a persistent store. Instance of {@code
 * GridCoverageWriter} are obtained through a call to {@link GridCoverageExchange#getWriter}. Grid
 * coverages are usually added to the output stream in a sequential order.
 *
 * @author Martin Desruisseaux (IRD)
 * @since GeoAPI 2.0
 * @see GridCoverageExchange#getWriter
 * @see javax.imageio.ImageWriter
 */
public interface GridCoverageWriter {
    /** Returns the format handled by this {@code GridCoverageWriter}. */
    Format getFormat();

    /**
     * Returns the output destination. This is the object passed to the {@link
     * GridCoverageExchange#getWriter} method. It can be a {@link java.lang.String}, an {@link
     * java.io.OutputStream}, a {@link java.nio.channels.FileChannel}, etc.
     */
    Object getDestination();

    /**
     * Returns the list of metadata keywords associated with the {@linkplain #getDestination output
     * destination} as a whole (not associated with any particular grid coverage). If no metadata is
     * allowed, the array will be empty.
     *
     * @return The list of metadata keywords for the output destination.
     * @throws IOException if an error occurs during reading or writing.
     * @todo This javadoc may not apply thats well in the iterator scheme.
     */
    String[] getMetadataNames();

    /**
     * Sets the metadata value for a given metadata name.
     *
     * @param name Metadata keyword for which to set the metadata.
     * @param value The metadata value for the given metadata name.
     * @throws IOException if an error occurs during writing.
     * @todo This javadoc may not apply thats well in the iterator scheme.
     */
    void setMetadataValue(String name, String value) throws IOException;

    /**
     * Set the name for the next grid coverage to {@linkplain #write write} within the {@linkplain
     * #getDestination output destination}. The subname can been fetch later at reading time.
     *
     * @throws IOException if an error occurs during writing.
     * @todo Do we need a special method for that, or should it be a metadata?
     */
    void setCurrentSubname(String name) throws IOException;

    /**
     * Writes the specified grid coverage.
     *
     * @param coverage The {@linkplain GridCoverage grid coverage} to write.
     * @param parameters An optional set of parameters. Should be any or all of the parameters
     *     returned by {@link Format#getWriteParameters}.
     * @throws InvalidParameterNameException if a parameter in {@code parameters} doesn't have a
     *     recognized name.
     * @throws InvalidParameterValueException if a parameter in {@code parameters} doesn't have a
     *     valid value.
     * @throws ParameterNotFoundException if a parameter was required for the operation but was not
     *     provided in the {@code parameters} list.
     * @throws FileFormatNotCompatibleWithGridCoverageException if the grid coverage can't be
     *     exported in the {@linkplain #getFormat writer format}.
     * @throws IOException if the export failed for some other input/output reason, including {@link
     *     javax.imageio.IIOException} if an error was thrown by the underlying image library.
     */
    void write(GridCoverage coverage, GeneralParameterValue[] parameters)
            throws IllegalArgumentException, IOException;

    /**
     * Allows any resources held by this object to be released. The result of calling any other
     * method subsequent to a call to this method is undefined. It is important for applications to
     * call this method when they know they will no longer be using this {@code GridCoverageWriter}.
     * Otherwise, the writer may continue to hold on to resources indefinitely.
     *
     * @throws IOException if an error occured while disposing resources (for example while flushing
     *     data and closing a file).
     */
    void dispose() throws IOException;
}