Performance

git-svn-id: https://joinup.ec.europa.eu/svn/pdf-as/trunk@167 7b5415b0-85f9-ee4d-85bd-d5d0c3b42d1c

1 files changed, 47 insertions, 0 deletions

diff --git a/src/main/java/at/gv/egiz/pdfas/impl/input/CompoundPdfDataSourceImpl.java b/src/main/java/at/gv/egiz/pdfas/impl/input/CompoundPdfDataSourceImpl.java
new file mode 100644
index 0000000..f77d6be
--- /dev/null
+++ b/src/main/java/at/gv/egiz/pdfas/impl/input/CompoundPdfDataSourceImpl.java
@@ -0,0 +1,47 @@
+/**

+ * 

+ */

+package at.gv.egiz.pdfas.impl.input;

+

+import java.io.ByteArrayInputStream;

+import java.io.InputStream;

+import java.io.SequenceInputStream;

+

+import at.gv.egiz.pdfas.framework.input.DataSource;

+import at.gv.egiz.pdfas.framework.input.PdfDataSource;

+

+/**

+ * @author wprinz

+ *

+ */

+public class CompoundPdfDataSourceImpl implements PdfDataSource

+{

+  protected DataSource originalDataSource = null;

+  

+  protected byte[] appendix = null;

+  

+  public CompoundPdfDataSourceImpl (PdfDataSource original, byte [] appendix)

+  {

+    this.originalDataSource = original;

+    this.appendix = appendix;

+  }

+

+  /**

+   * @see at.gv.egiz.pdfas.framework.input.DataSource#createInputStream()

+   */

+  public InputStream createInputStream()

+  {

+    ByteArrayInputStream bais = new ByteArrayInputStream(this.appendix);

+    SequenceInputStream sis = new SequenceInputStream(this.originalDataSource.createInputStream(), bais);

+    return sis;

+  }

+

+  /**

+   * @see at.gv.egiz.pdfas.framework.input.DataSource#getLength()

+   */

+  public int getLength()

+  {

+    return this.originalDataSource.getLength() + this.appendix.length;

+  }

+

+}