org.mapfish.print.map.geotools.AbstractGridCoverage2DReaderLayer Maven / Gradle / Ivy

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package org.mapfish.print.map.geotools;

import com.google.common.base.Function;
import org.geotools.coverage.grid.io.AbstractGridCoverage2DReader;
import org.geotools.map.GridReaderLayer;
import org.geotools.map.Layer;
import org.geotools.styling.Style;
import org.mapfish.print.attribute.map.MapfishMapContext;
import org.mapfish.print.http.MfClientHttpRequestFactory;
import org.mapfish.print.map.AbstractLayerParams;

import java.util.Collections;
import java.util.List;
import java.util.concurrent.ExecutorService;

/**
 * @author Jesse on 3/26/14.
 */
public class AbstractGridCoverage2DReaderLayer extends AbstractGeotoolsLayer {

    private final Function coverage2DReaderSupplier;
    private final StyleSupplier styleSupplier;

    /**
     * Constructor.
     *
     * @param coverage2DReader the coverage2DReader for reading the grid coverage data.
     * @param style            style to use for rendering the data.
     * @param executorService  the thread pool for doing the rendering.
     * @param params the parameters for this layer
     */
    public AbstractGridCoverage2DReaderLayer(final Function coverage2DReader,
                                             final StyleSupplier style,
                                             final ExecutorService executorService,
                                             final AbstractLayerParams params) {
        super(executorService, params);
        this.styleSupplier = style;
        this.coverage2DReaderSupplier = coverage2DReader;
    }

    @Override
    public final synchronized List getLayers(final MfClientHttpRequestFactory httpRequestFactory,
                                                 final MapfishMapContext mapContext,
                                                 final boolean isFirstLayer) throws Exception {
        AbstractGridCoverage2DReader coverage2DReader = this.coverage2DReaderSupplier.apply(httpRequestFactory);
        Style style = this.styleSupplier.load(httpRequestFactory, coverage2DReader, mapContext);
        return Collections.singletonList(new GridReaderLayer(coverage2DReader, style));
    }

}