Example usage for java.util EnumMap EnumMap

Introduction

In this page you can find the example usage for java.util EnumMap EnumMap.

Prototype

public EnumMap(Map<K, ? extends V> m)

Source Link

Document

Creates an enum map initialized from the specified map.

Usage

From source file:org.yccheok.jstock.gui.JStock.java

private void initStockInfoDatabaseMeta() {

    Runnable runnable = new Runnable() {
        @Override// ww w  . j  a v a2  s . c  om
        public void run() {
            // Read existing stock-info-database-meta.json
            final Map<Country, Long> localStockInfoDatabaseMeta = Utils
                    .loadStockInfoDatabaseMeta(Utils.getStockInfoDatabaseMetaFile());

            final String location = org.yccheok.jstock.network.Utils
                    .getURL(org.yccheok.jstock.network.Utils.Type.STOCK_INFO_DATABASE_META);

            final String json = Utils.downloadAsString(location);

            final Map<Country, Long> latestStockInfoDatabaseMeta = Utils.loadStockInfoDatabaseMeta(json);

            final Map<Country, Long> successStockInfoDatabaseMeta = new EnumMap<Country, Long>(Country.class);

            boolean needToInitDatabase = false;

            // Build up list of stock-info-database.csv that needed to be
            // updated.
            for (Map.Entry<Country, Long> entry : latestStockInfoDatabaseMeta.entrySet()) {
                if (Thread.currentThread().isInterrupted() || stockInfoDatabaseMetaPool == null) {
                    break;
                }

                Country country = entry.getKey();
                Long latest = entry.getValue();
                Long local = localStockInfoDatabaseMeta.get(country);

                if (false == latest.equals(local)) {
                    final String stocksCSVZipFileLocation = org.yccheok.jstock.engine.Utils
                            .getStocksCSVZipFileLocation(country);

                    final File zipFile = Utils.downloadAsTempFile(stocksCSVZipFileLocation);

                    if (zipFile == null) {
                        continue;
                    }

                    File tempZipDirectory = null;

                    try {
                        tempZipDirectory = java.nio.file.Files.createTempDirectory(null).toFile();

                        if (false == Utils.extractZipFile(zipFile, tempZipDirectory.getAbsolutePath(), true)) {
                            continue;
                        }

                        File file = new File(tempZipDirectory, "stocks.csv");

                        final java.util.List<Stock> stocks = org.yccheok.jstock.engine.Utils
                                .getStocksFromCSVFile(file);

                        if (false == stocks.isEmpty()) {
                            final Pair<StockInfoDatabase, StockNameDatabase> stockDatabase = org.yccheok.jstock.engine.Utils
                                    .toStockDatabase(stocks, country);

                            final boolean success = JStock.saveStockInfoDatabaseAsCSV(country,
                                    stockDatabase.first);

                            if (stockDatabase.second != null) {
                                JStock.saveStockNameDatabaseAsCSV(country, stockDatabase.second);
                            }

                            if (success) {
                                successStockInfoDatabaseMeta.put(country, latest);
                                if (country == jStockOptions.getCountry()) {
                                    needToInitDatabase = true;
                                }
                            }
                        }
                    } catch (IOException ex) {
                        log.error(null, ex);
                    } finally {
                        if (tempZipDirectory != null) {
                            Utils.deleteDir(tempZipDirectory, true);
                        }
                    }
                }
            }

            if (successStockInfoDatabaseMeta.isEmpty()) {
                return;
            }

            // Retain old meta value.
            for (Map.Entry<Country, Long> entry : localStockInfoDatabaseMeta.entrySet()) {
                Country country = entry.getKey();
                Long old = entry.getValue();

                if (false == successStockInfoDatabaseMeta.containsKey(country)) {
                    successStockInfoDatabaseMeta.put(country, old);
                }
            }

            Utils.saveStockInfoDatabaseMeta(Utils.getStockInfoDatabaseMetaFile(), successStockInfoDatabaseMeta);

            if (needToInitDatabase) {
                initDatabase(true);
            }
        }
    };

    stockInfoDatabaseMetaPool.execute(runnable);
}