--- /dev/null
+package be.nikiroo.fanfix.library;
+
+import java.io.File;
+import java.io.IOException;
+import java.net.URL;
+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.Image;
+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
+ public Status getStatus() {
+ return lib.getStatus();
+ }
+
+ @Override
+ protected List<MetaData> getMetas(Progress pg) throws IOException {
+ if (pg == null) {
+ pg = new Progress();
+ }
+
+ if (metas == null) {
+ metas = lib.getMetas(pg);
+ }
+
+ pg.done();
+ return metas;
+ }
+
+ @Override
+ public synchronized MetaData getInfo(String luid) throws IOException {
+ MetaData info = cacheLib.getInfo(luid);
+ if (info == null) {
+ info = lib.getInfo(luid);
+ }
+
+ return info;
+ }
+
+ @Override
+ public synchronized Story getStory(String luid, MetaData meta, Progress pg)
+ throws IOException {
+ if (pg == null) {
+ pg = new Progress();
+ }
+
+ Progress pgImport = new Progress();
+ Progress pgGet = new Progress();
+
+ pg.setMinMax(0, 4);
+ pg.addProgress(pgImport, 3);
+ pg.addProgress(pgGet, 1);
+
+ if (!isCached(luid)) {
+ try {
+ cacheLib.imprt(lib, luid, pgImport);
+ updateInfo(cacheLib.getInfo(luid));
+ pgImport.done();
+ } catch (IOException e) {
+ Instance.getTraceHandler().error(e);
+ }
+
+ pgImport.done();
+ pgGet.done();
+ }
+
+ String type = cacheLib.getOutputType(meta.isImageDocument());
+ MetaData cachedMeta = meta.clone();
+ cachedMeta.setType(type);
+
+ return cacheLib.getStory(luid, cachedMeta, pg);
+ }
+
+ @Override
+ public synchronized File getFile(final String luid, Progress pg)
+ throws IOException {
+ if (pg == null) {
+ pg = new Progress();
+ }
+
+ Progress pgGet = new Progress();
+ Progress pgRecall = new Progress();
+
+ pg.setMinMax(0, 5);
+ pg.addProgress(pgGet, 4);
+ pg.addProgress(pgRecall, 1);
+
+ if (!isCached(luid)) {
+ getStory(luid, pgGet);
+ pgGet.done();
+ }
+
+ File file = cacheLib.getFile(luid, pgRecall);
+ pgRecall.done();
+
+ pg.done();
+ return file;
+ }
+
+ @Override
+ public Image getCover(final String luid) throws IOException {
+ if (isCached(luid)) {
+ return cacheLib.getCover(luid);
+ }
+
+ // We could update the cache here, but it's not easy
+ return lib.getCover(luid);
+ }
+
+ @Override
+ public Image getSourceCover(String source) throws IOException {
+ Image custom = getCustomSourceCover(source);
+ if (custom != null) {
+ return custom;
+ }
+
+ Image cached = cacheLib.getSourceCover(source);
+ if (cached != null) {
+ return cached;
+ }
+
+ return lib.getSourceCover(source);
+ }
+
+ @Override
+ public Image getAuthorCover(String author) throws IOException {
+ Image custom = getCustomAuthorCover(author);
+ if (custom != null) {
+ return custom;
+ }
+
+ Image cached = cacheLib.getAuthorCover(author);
+ if (cached != null) {
+ return cached;
+ }
+
+ return lib.getAuthorCover(author);
+ }
+
+ @Override
+ public Image getCustomSourceCover(String source) throws IOException {
+ Image custom = cacheLib.getCustomSourceCover(source);
+ if (custom == null) {
+ custom = lib.getCustomSourceCover(source);
+ if (custom != null) {
+ cacheLib.setSourceCover(source, custom);
+ }
+ }
+
+ return custom;
+ }
+
+ @Override
+ public Image getCustomAuthorCover(String author) throws IOException {
+ Image custom = cacheLib.getCustomAuthorCover(author);
+ if (custom == null) {
+ custom = lib.getCustomAuthorCover(author);
+ if (custom != null) {
+ cacheLib.setAuthorCover(author, custom);
+ }
+ }
+
+ return custom;
+ }
+
+ @Override
+ public void setSourceCover(String source, String luid) throws IOException {
+ lib.setSourceCover(source, luid);
+ cacheLib.setSourceCover(source, getCover(luid));
+ }
+
+ @Override
+ public void setAuthorCover(String author, String luid) throws IOException {
+ lib.setAuthorCover(author, luid);
+ cacheLib.setAuthorCover(author, getCover(luid));
+ }
+
+ @Override
+ protected void updateInfo(MetaData meta) throws IOException {
+ if (meta != null && metas != null) {
+ boolean changed = false;
+ for (int i = 0; i < metas.size(); i++) {
+ if (metas.get(i).getLuid().equals(meta.getLuid())) {
+ metas.set(i, meta);
+ changed = true;
+ }
+ }
+
+ if (!changed) {
+ metas.add(meta);
+ }
+ }
+
+ cacheLib.updateInfo(meta);
+ lib.updateInfo(meta);
+ }
+
+ @Override
+ protected void invalidateInfo(String luid) {
+ if (luid == null) {
+ metas = null;
+ } else if (metas != null) {
+ for (int i = 0; i < metas.size(); i++) {
+ if (metas.get(i).getLuid().equals(luid)) {
+ metas.remove(i--);
+ }
+ }
+ }
+
+ cacheLib.invalidateInfo(luid);
+ lib.invalidateInfo(luid);
+ }
+
+ @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, story.getMeta().getLuid(), pgCacheLib);
+
+ updateInfo(story.getMeta());
+
+ return story;
+ }
+
+ @Override
+ public synchronized void delete(String luid) throws IOException {
+ if (isCached(luid)) {
+ cacheLib.delete(luid);
+ }
+ lib.delete(luid);
+
+ invalidateInfo(luid);
+ }
+
+ @Override
+ protected synchronized void changeSTA(String luid, String newSource,
+ String newTitle, String newAuthor, 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);
+
+ MetaData meta = getInfo(luid);
+ if (meta == null) {
+ throw new IOException("Story not found: " + luid);
+ }
+
+ if (isCached(luid)) {
+ cacheLib.changeSTA(luid, newSource, newTitle, newAuthor, pgCache);
+ }
+ pgCache.done();
+
+ lib.changeSTA(luid, newSource, newTitle, newAuthor, pgOrig);
+ pgOrig.done();
+
+ meta.setSource(newSource);
+ meta.setTitle(newTitle);
+ meta.setAuthor(newAuthor);
+ pg.done();
+
+ invalidateInfo(luid);
+ }
+
+ /**
+ * 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) {
+ try {
+ return cacheLib.getInfo(luid) != null;
+ } catch (IOException e) {
+ return false;
+ }
+ }
+
+ /**
+ * Clear the {@link Story} from the cache.
+ * <p>
+ * The next time we try to retrieve the {@link Story}, it may be required to
+ * cache it again.
+ *
+ * @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);
+ }
+ }
+
+ @Override
+ public MetaData imprt(URL url, Progress pg) throws IOException {
+ if (pg == null) {
+ pg = new Progress();
+ }
+
+ Progress pgImprt = new Progress();
+ Progress pgCache = new Progress();
+ pg.setMinMax(0, 10);
+ pg.addProgress(pgImprt, 7);
+ pg.addProgress(pgCache, 3);
+
+ MetaData meta = lib.imprt(url, pgImprt);
+ updateInfo(meta);
+
+ clearFromCache(meta.getLuid());
+
+ pg.done();
+ return meta;
+ }
+
+ // 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