Refactoring

git-svn-id: https://svn.iaik.tugraz.at/svn/egiz/prj/current/12PDF-OVER-4.0@12276 3a0b52a2-8410-0410-bc02-ff6273a87459

1 files changed, 73 insertions, 0 deletions

diff --git a/trunk/pdf-over-signer/pdf-over-sigpdfas/src/main/java/at/asit/pdfover/signer/pdfas/PDFASHelper.java b/trunk/pdf-over-signer/pdf-over-sigpdfas/src/main/java/at/asit/pdfover/signer/pdfas/PDFASHelper.java
new file mode 100644
index 00000000..756478d3
--- /dev/null
+++ b/trunk/pdf-over-signer/pdf-over-sigpdfas/src/main/java/at/asit/pdfover/signer/pdfas/PDFASHelper.java
@@ -0,0 +1,73 @@
+package at.asit.pdfover.signer.pdfas;
+
+import at.asit.pdfover.signator.SignatureException;
+import at.gv.egiz.pdfas.api.PdfAs;
+import at.gv.egiz.pdfas.api.exceptions.PdfAsException;
+import at.gv.egiz.pdfas.api.internal.PdfAsInternal;
+
+/**
+ * Encapsulates PDF AS API Object to need just one initialization
+ * @author afitzek
+ */
+public class PDFASHelper {
+	
+	/**
+	 * PDF AS Object
+	 */
+	private static PdfAs pdfAs = null;
+	
+	/**
+	 * Internal Pdf AS Object
+	 */
+	private static PdfAsInternal pdfAsInternal = null;
+	
+	/**
+	 * Creates PDF AS Object
+	 * @return
+	 * @throws PdfAsException
+	 */
+	private static PdfAs createPdfAs() throws PdfAsException {
+		return new at.gv.egiz.pdfas.impl.api.PdfAsObject();
+	}
+	
+	/**
+	 * Creates a PDF-AS Internal object
+	 * @return the PDF-AS Internal object
+	 * @throws PdfAsException
+	 */
+	private static PdfAsInternal createPdfAsInternal() throws PdfAsException {
+		return new at.gv.egiz.pdfas.impl.api.internal.PdfAsInternalObject();
+	}
+	
+	/**
+	 * Gets PDF-AS Object
+	 * @return the PDF-AS Object
+	 * @throws SignatureException
+	 */
+	public static synchronized PdfAs getPdfAs() throws SignatureException {
+		if (pdfAs == null) {
+			try {
+				pdfAs = createPdfAs();
+			} catch(PdfAsException e)  {
+				throw new SignatureException(e);
+			}
+		}
+		return pdfAs;
+	}
+	
+	/**
+	 * Gets PDF-AS Internal object
+	 * @return the PDF-AS Internal object
+	 * @throws SignatureException
+	 */
+	public static synchronized PdfAsInternal getPdfAsInternal() throws SignatureException {
+		if(pdfAsInternal == null) {
+			try {
+				pdfAsInternal = createPdfAsInternal();
+			} catch(PdfAsException e)  {
+				throw new SignatureException(e);
+			}
+		}
+		return pdfAsInternal;
+	}
+}