private void _generateImagesPB(FileVersion fileVersion, File file) throws Exception {
String tempFileId =
DLUtil.getTempFileId(fileVersion.getFileEntryId(), fileVersion.getVersion());
File thumbnailFile = getThumbnailTempFile(tempFileId);
int previewFilesCount = 0;
PDDocument pdDocument = null;
try {
pdDocument = PDDocument.load(file);
previewFilesCount = pdDocument.getNumberOfPages();
} finally {
if (pdDocument != null) {
pdDocument.close();
}
}
File[] previewFiles = new File[previewFilesCount];
for (int i = 0; i < previewFilesCount; i++) {
previewFiles[i] = getPreviewTempFile(tempFileId, i);
}
boolean generatePreview = _isGeneratePreview(fileVersion);
boolean generateThumbnail = _isGenerateThumbnail(fileVersion);
if (PropsValues.DL_FILE_ENTRY_PREVIEW_FORK_PROCESS_ENABLED) {
ProcessCallable<String> processCallable =
new LiferayPDFBoxProcessCallable(
ServerDetector.getServerId(),
PropsUtil.get(PropsKeys.LIFERAY_HOME),
Log4JUtil.getCustomLogSettings(),
file,
thumbnailFile,
previewFiles,
getThumbnailType(fileVersion),
getPreviewType(fileVersion),
PropsValues.DL_FILE_ENTRY_PREVIEW_DOCUMENT_DPI,
PropsValues.DL_FILE_ENTRY_PREVIEW_DOCUMENT_MAX_HEIGHT,
PropsValues.DL_FILE_ENTRY_PREVIEW_DOCUMENT_MAX_WIDTH,
generatePreview,
generateThumbnail);
Future<String> future =
ProcessExecutor.execute(ClassPathUtil.getPortalClassPath(), processCallable);
String processIdentity = String.valueOf(fileVersion.getFileVersionId());
futures.put(processIdentity, future);
future.get();
} else {
LiferayPDFBoxConverter liferayConverter =
new LiferayPDFBoxConverter(
file,
thumbnailFile,
previewFiles,
getPreviewType(fileVersion),
getThumbnailType(fileVersion),
PropsValues.DL_FILE_ENTRY_PREVIEW_DOCUMENT_DPI,
PropsValues.DL_FILE_ENTRY_PREVIEW_DOCUMENT_MAX_HEIGHT,
PropsValues.DL_FILE_ENTRY_PREVIEW_DOCUMENT_MAX_WIDTH,
generatePreview,
generateThumbnail);
liferayConverter.generateImagesPB();
}
if (generateThumbnail) {
try {
storeThumbnailImages(fileVersion, thumbnailFile);
} finally {
FileUtil.delete(thumbnailFile);
}
if (_log.isInfoEnabled()) {
_log.info("PDFBox generated a thumbnail for " + fileVersion.getFileVersionId());
}
}
if (generatePreview) {
int index = 0;
for (File previewFile : previewFiles) {
try {
addFileToStore(
fileVersion.getCompanyId(), PREVIEW_PATH,
getPreviewFilePath(fileVersion, index + 1), previewFile);
} finally {
FileUtil.delete(previewFile);
}
index++;
}
if (_log.isInfoEnabled()) {
_log.info(
"PDFBox generated "
+ getPreviewFileCount(fileVersion)
+ " preview pages for "
+ fileVersion.getFileVersionId());
}
}
}
