added a MetaModel

Issue #215

imixs-archive-documents/src/main/java/org/imixs/archive/documents/EInvoiceMetaAdapter.java

@@ -0,0 +1,84 @@
+package org.imixs.archive.documents;
+
+import java.util.logging.Logger;
+
+import org.imixs.workflow.FileData;
+import org.imixs.workflow.ItemCollection;
+import org.imixs.workflow.exceptions.AdapterException;
+import org.imixs.workflow.exceptions.PluginException;
+
+/**
+ * The EInvoiceAutoAdapter can detect and extract content from e-invoice
+ * documents
+ * in different formats. This Adapter class extends the {@link EInvoiceAdapter}
+ * and resolves pre defined Items according to the Factur-X/ZUGFeRD 2.0
+ * standard.
+ * 
+ * @author rsoika
+ * @version 2.0
+ * 
+ */
+public class EInvoiceMetaAdapter extends EInvoiceAdapter {
+	private static Logger logger = Logger.getLogger(EInvoiceAdapter.class.getName());
+
+	/**
+	 * Executes the e-invoice detection process on the given workitem.
+	 * It attempts to detect the e-invoice format from attached files and
+	 * updates the workitem with the result.
+	 *
+	 * @param workitem The workitem to process
+	 * @param event    The event triggering this execution
+	 * @return The updated workitem
+	 * @throws AdapterException If there's an error in the adapter execution
+	 * @throws PluginException  If there's an error in plugin processing
+	 */
+	@Override
+	public ItemCollection execute(ItemCollection workitem, ItemCollection event)
+			throws AdapterException, PluginException {
+
+		// Detect and read E-Invoice Data
+		FileData eInvoiceFileData = detectEInvoice(workitem);
+
+		if (eInvoiceFileData == null) {
+			logger.info("No e-invoice type detected.");
+			return workitem;
+		} else {
+			String einvoiceType = detectEInvoiceType(eInvoiceFileData);
+			workitem.setItemValue(FILE_ATTRIBUTE_EINVOICE_TYPE, einvoiceType);
+			logger.info("Detected e-invoice type: " + einvoiceType);
+
+			// readEInvoiceContent(eInvoiceFileData, workitem);
+		}
+
+		return workitem;
+	}
+
+	/**
+	 * This method resolves the content of a factur-x e-invocie file and extracts
+	 * all invoice and customer fields.
+	 * 
+	 * This is the variant without Mustang Project
+	 * 
+	 * 
+	 * @param xmlData
+	 * @return
+	 * @throws PluginException
+	 */
+	private void readEInvoiceContentNativeXML(FileData eInvoiceFileData,
+			ItemCollection workitem) throws PluginException {
+		byte[] xmlData = readXMLContent(eInvoiceFileData);
+		logger.info("Autodetect e-invoice data...");
+
+		createXMLDoc(xmlData);
+
+		readItem(workitem, "//rsm:CrossIndustryInvoice/rsm:ExchangedDocument/ram:ID", "text", "invoice.number");
+		readItem(workitem, "//rsm:ExchangedDocument/ram:IssueDateTime/udt:DateTimeString/text()", "date",
+				"invoice.date");
+		readItem(workitem, "//ram:SpecifiedTradeSettlementHeaderMonetarySummation/ram:GrandTotalAmount", "double",
+				"invoice.total");
+		readItem(workitem, "//ram:ApplicableHeaderTradeAgreement/ram:SellerTradeParty/ram:Name/text()", "text",
+				"cdtr.name");
+
+	}
+
+}