//  [java]
    PGRasterConfig(Document config) {
        Element root = config.getDocumentElement();
        if (!"pgraster".equalsIgnoreCase(root.getNodeName())) {
            throw new IllegalArgumentException(
                    "Not a postgis raster configuration, root element must be 'pgraster'");
        }

        this.name = first(root, "name").map(this::nodeValue).orElse(null);
        this.enableDrivers = first(root, "enableDrivers").map(this::nodeValue).orElse(null);

        Element db =
                first(config.getDocumentElement(), "database")
                        .orElseThrow(
                                () ->
                                        new IllegalArgumentException(
                                                "Config has no database element"));

        DataSource dataSource = null;

        String jndi = first(db, "jndi").map(this::nodeValue).orElse(null);
        if (jndi != null) {
            try {
                dataSource = (DataSource) GeoTools.getInitialContext().lookup(jndi);
            } catch (NamingException e) {
                throw new IllegalArgumentException("Error performing JNDI lookup for: " + jndi, e);
            }
        }

        if (dataSource == null) {
            BasicDataSource source = new BasicDataSource();
            source.setDriverClassName("org.postgresql.Driver");

            String host = first(db, "host").map(this::nodeValue).orElse("localhost");

            Integer port =
                    first(db, "port").map(this::nodeValue).map(Integer::parseInt).orElse(5432);

            String name =
                    first(db, "name")
                            .map(this::nodeValue)
                            .orElseThrow(
                                    () ->
                                            new IllegalArgumentException(
                                                    "database 'name' not specified"));

            source.setUrl("jdbc:postgresql://" + host + ":" + port + "/" + name);

            first(db, "user").map(this::nodeValue).ifPresent(source::setUsername);

            first(db, "passwd").map(this::nodeValue).ifPresent(source::setPassword);

            first(db, "pool")
                    .ifPresent(
                            p -> {
                                first(p, "min")
                                        .map(this::nodeValue)
                                        .map(Integer::parseInt)
                                        .ifPresent(source::setMinIdle);
                                first(p, "max")
                                        .map(this::nodeValue)
                                        .map(Integer::parseInt)
                                        .ifPresent(source::setMaxActive);
                            });

            dataSource = new PGRasterDataSource(source);
        }

        this.dataSource = dataSource;

        Element ras =
                first(config.getDocumentElement(), "raster")
                        .orElseThrow(
                                () ->
                                        new IllegalArgumentException(
                                                "Config has no 'raster' element"));

        this.schema = first(ras, "schema").map(this::nodeValue).orElse("public");
        this.table =
                first(ras, "table")
                        .map(this::nodeValue)
                        .orElseThrow(
                                () ->
                                        new IllegalArgumentException(
                                                "column must specify a 'table' element"));
        this.column = first(ras, "column").map(this::nodeValue).orElse(null);

        // time
        first(config.getDocumentElement(), "time")
                .ifPresent(
                        el -> {
                            first(el, "enabled")
                                    .map(this::nodeValue)
                                    .map(Boolean::parseBoolean)
                                    .ifPresent(it -> time.enabled = it);
                            first(el, "column")
                                    .map(this::nodeValue)
                                    .ifPresent(it -> time.column = it);
                        });
    }