保存草稿

以下代碼用於保存字母實例。 字母實例的元資料儲存在 冰草 的子菜單。 生成並返回唯一字串(draftID)。 此唯一字串隨後用於檢索已保存的字母實例。

public String save(CCRDocumentInstance letterToSave) throws CCRDocumentException {
  String insertRowSQL = "INSERT INTO aemformstutorial.icdrafts(draftID,documentID,status,owner,name) VALUES(?,?,?,?,?)";
  log.debug(" in save IC Draft" + letterToSave.getDocumentId() + letterToSave.getName());
  UUID uuid = UUID.randomUUID();
  String uuidString = uuid.toString();
  Connection connection = getConnection();
  PreparedStatement pstmt = null;
  Document icData = letterToSave.getData();
  try {
    pstmt = connection.prepareStatement(insertRowSQL);
    pstmt.setString(1, uuidString);
    pstmt.setString(2, letterToSave.getDocumentId());
    pstmt.setString(3, "DRAFT");
    pstmt.setString(4, letterToSave.getCreatedBy());
    pstmt.setString(5, letterToSave.getName());
    icData.copyToFile(new File(uuidString + ".xml"));
    log.debug("Executing the insert statment  " + pstmt.executeUpdate());
    connection.commit();
  } catch (IOException | SQLException e) {
    log.debug("The error is " + e.getMessage());
  } finally {
    if (pstmt != null) {
      try {
        pstmt.close();
      } catch (SQLException e) {
        log.debug("Error in closing prepared statment" + e.getMessage());
      }
    }
    if (connection != null) {
      try {
        log.debug("Closing the connection in Save Letter Draft");
        connection.close();
      } catch (SQLException e) {
        log.debug("Error in closing connection" + e.getMessage());
      }
    }

  }

  return uuidString;
}

獲取信件

寫入了以下代碼以獲取已保存的草稿信函。
要載入已保存的字母實例，需要提供draftID。 基於此draftID，我們查詢資料庫以獲取關於該字母的其他元資料。 同一draftID用於通過從檔案系統中讀取相應的xml來建立字母資料。 然後構建並返回CCRDocumentInstance對象。

@Override
public CCRDocumentInstance get(String draftID) throws CCRDocumentException {

  String selectStatement = "Select documentID from aemformstutorial.icdrafts where draftID='" + draftID + "'";
  log.debug("The select statement is " + selectStatement);
  Connection connection = getConnection();
  Statement statement = null;
  String documentID = "";
  try {
    statement = connection.createStatement();
    ResultSet rs = statement.executeQuery(selectStatement);
    while (rs.next()) {
      documentID = rs.getString("documentID");

    }
  } catch (SQLException e) {
    log.debug("The error is " + e.getMessage());
  }
  Document draftData = new Document(new File(draftID + ".xml"));
  CCRDocumentInstance draftInstance = new CCRDocumentInstance(draftData, "abc", documentID, CCRDocumentInstance.Status.DRAFT);
  draftInstance.setId(draftID);
  return draftInstance;
}

更新信函

以下代碼用於更新已保存的信件實例。 更新的字母資料使用字母ID寫入檔案系統。

public void update(CCRDocumentInstance letterInstanceToUpdate) throws CCRDocumentException {
		Document icData = letterInstanceToUpdate.getData();
		String draftID = letterInstanceToUpdate.getId();
		log.debug("updating letter instance with draft id =  "+draftID);
		try
			{
				icData.copyToFile(new File(draftID+".xml"));
			}
		catch (IOException e)
			{
				log.debug("Error updating "+e.getMessage());;
			}

	}

獲取所有已保存的信件

AEM Forms不提供任何現成的用戶介面來列出已保存的字母。 對於本文，我使用自適應表單以表格格式列出保存的字母實例。
您可以自定義查詢以獲取已保存的字母實例。 在此示例中，我正在查詢由"admin"保存的字母實例。

	public List < CCRDocumentInstance > getAll(String arg0, Date arg1, Date arg2, Map < String, Object > arg3) throws CCRDocumentException {
	  String selectStatement = "Select * from aemformstutorial.icdrafts where owner = 'admin'";
	  Connection connection = getConnection();
	  Statement statement = null;
	  String documentID = "";
	  List < CCRDocumentInstance > listOfDrafts = new ArrayList < CCRDocumentInstance > ();
	  String draftID;
	  String savedInstanceName = "";
	  try {
	    statement = connection.createStatement();
	    ResultSet rs = statement.executeQuery(selectStatement);
	    while (rs.next()) {
	      documentID = rs.getString("documentID");
	      draftID = rs.getString("draftID");
	      savedInstanceName = rs.getString("name");
	      Document draftData = new Document(new File(draftID + ".xml"));
	      CCRDocumentInstance draftLetter = new CCRDocumentInstance(draftData, savedInstanceName, documentID, CCRDocumentInstance.Status.DRAFT);
	      listOfDrafts.add(draftLetter);
	    }
	  } catch (SQLException e) {
	    log.debug("The error is " + e.getMessage());
	  } finally {
	    if (statement != null) {
	      try {
	        statement.close();
	      } catch (SQLException e) {
	        log.debug("error in closing statement" + e.getMessage());
	      }
	    }
	    if (connection != null) {
	      try {
	        connection.close();
	      } catch (SQLException e) {
	        log.debug("error in closing connection" + e.getMessage());
	      }
	    }
	  }

	  return listOfDrafts;
	}

Eclipse項目

具有示例實現的Eclipse項目可以 從此處下載