+++ /dev/null
-package be.nikiroo.fanfix.library;
-
-import java.awt.image.BufferedImage;
-import java.io.File;
-import java.io.IOException;
-import java.util.List;
-
-import be.nikiroo.fanfix.Instance;
-import be.nikiroo.fanfix.bundles.UiConfig;
-import be.nikiroo.fanfix.data.MetaData;
-import be.nikiroo.fanfix.data.Story;
-import be.nikiroo.utils.Progress;
-
-/**
- * This library will cache another pre-existing {@link BasicLibrary}.
- *
- * @author niki
- */
-public class CacheLibrary extends BasicLibrary {
- private List<MetaData> metas;
- private BasicLibrary lib;
- private LocalLibrary cacheLib;
-
- /**
- * Create a cache library around the given one.
- * <p>
- * It will return the same result, but those will be saved to disk at the
- * same time to be fetched quicker the next time.
- *
- * @param cacheDir
- * the cache directory where to save the files to disk
- * @param lib
- * the original library to wrap
- */
- public CacheLibrary(File cacheDir, BasicLibrary lib) {
- this.cacheLib = new LocalLibrary(cacheDir, Instance.getUiConfig()
- .getString(UiConfig.GUI_NON_IMAGES_DOCUMENT_TYPE), Instance
- .getUiConfig().getString(UiConfig.GUI_IMAGES_DOCUMENT_TYPE),
- true);
- this.lib = lib;
- }
-
- @Override
- public String getLibraryName() {
- return lib.getLibraryName();
- }
-
- @Override
- protected List<MetaData> getMetas(Progress pg) {
- if (pg == null) {
- pg = new Progress();
- }
-
- if (metas == null) {
- metas = lib.getMetas(pg);
- }
-
- pg.done();
- return metas;
- }
-
- @Override
- public synchronized File getFile(final String luid, Progress pg) {
- if (pg == null) {
- pg = new Progress();
- }
-
- Progress pgImport = new Progress();
- Progress pgGet = new Progress();
- Progress pgRecall = new Progress();
-
- pg.setMinMax(0, 5);
- pg.addProgress(pgImport, 3);
- pg.addProgress(pgGet, 1);
- pg.addProgress(pgRecall, 1);
-
- if (!isCached(luid)) {
- try {
- cacheLib.imprt(lib, luid, pgImport);
- pgImport.done();
- clearCache();
- } catch (IOException e) {
- Instance.getTraceHandler().error(e);
- }
-
- pgImport.done();
- pgGet.done();
- }
-
- File file = cacheLib.getFile(luid, pgRecall);
- pgRecall.done();
-
- pg.done();
- return file;
- }
-
- @Override
- public BufferedImage getCover(final String luid) {
- if (isCached(luid)) {
- return cacheLib.getCover(luid);
- }
-
- // We could update the cache here, but it's not easy
- return lib.getCover(luid);
- }
-
- @Override
- public BufferedImage getSourceCover(String source) {
- // no cache for the source cover
- return lib.getSourceCover(source);
- }
-
- @Override
- public void setSourceCover(String source, String luid) {
- lib.setSourceCover(source, luid);
- cacheLib.setSourceCover(source, getSourceCover(source));
- }
-
- @Override
- protected void clearCache() {
- metas = null;
- cacheLib.clearCache();
- lib.clearCache();
- }
-
- @Override
- public synchronized Story save(Story story, String luid, Progress pg)
- throws IOException {
- Progress pgLib = new Progress();
- Progress pgCacheLib = new Progress();
-
- if (pg == null) {
- pg = new Progress();
- }
-
- pg.setMinMax(0, 2);
- pg.addProgress(pgLib, 1);
- pg.addProgress(pgCacheLib, 1);
-
- story = lib.save(story, luid, pgLib);
- story = cacheLib.save(story, luid, pgCacheLib);
-
- clearCache();
-
- return story;
- }
-
- @Override
- public synchronized void delete(String luid) throws IOException {
- if (isCached(luid)) {
- cacheLib.delete(luid);
- }
- lib.delete(luid);
- clearCache();
- }
-
- @Override
- public synchronized void changeSource(String luid, String newSource,
- Progress pg) throws IOException {
- if (pg == null) {
- pg = new Progress();
- }
-
- Progress pgCache = new Progress();
- Progress pgOrig = new Progress();
- pg.setMinMax(0, 2);
- pg.addProgress(pgCache, 1);
- pg.addProgress(pgOrig, 1);
-
- if (isCached(luid)) {
- cacheLib.changeSource(luid, newSource, pgCache);
- }
- pgCache.done();
- lib.changeSource(luid, newSource, pgOrig);
- pgOrig.done();
-
- pg.done();
- }
-
- /**
- * Check if the {@link Story} denoted by this Library UID is present in the
- * cache.
- *
- * @param luid
- * the Library UID
- *
- * @return TRUE if it is
- */
- public boolean isCached(String luid) {
- return cacheLib.getInfo(luid) != null;
- }
-
- /**
- * Clear the {@link Story} from the cache.
- *
- * @param luid
- * the story to clear
- *
- * @throws IOException
- * in case of I/O error
- */
- public void clearFromCache(String luid) throws IOException {
- if (isCached(luid)) {
- cacheLib.delete(luid);
- clearCache();
- }
- }
-
- // All the following methods are only used by Save and Delete in
- // BasicLibrary:
-
- @Override
- protected int getNextId() {
- throw new java.lang.InternalError("Should not have been called");
- }
-
- @Override
- protected void doDelete(String luid) throws IOException {
- throw new java.lang.InternalError("Should not have been called");
- }
-
- @Override
- protected Story doSave(Story story, Progress pg) throws IOException {
- throw new java.lang.InternalError("Should not have been called");
- }
-}
git://git.nikiroo.be / fanfix.git / blobdiff