Querying without conditions

• Returning multiple whole documents
• Returning multiple partial documents
• Returning single whole documents
• Returning single partial documents

Returning multiple whole documents

Call the find() method of a Table object that represents the table. The result is a DocumentStream object, which is a list of Document objects that contain the returned whole OJAI documents.

  public void findDocs(String tablePath) {
    try(Table table = MapRDB.getTable(tablePath)) {
      DocumentStream documentStream = table.find()) {
      for(Document document : documentStream) {
        System.out.println(document);
      }
    }
  }

Returning multiple partial documents

Call the find() method of a Table object that represents the table. When calling the method, pass a String object that contains the path or paths of the fields to include in the results. The paths used dotted notation.

The result is a DocumentStream object, which is a list of Document objects that contain the returned partial OJAI documents.

  public void findPartialDocs(String tablePath, String[] fieldPaths) {
    try(Table table = MapRDB.getTable(tablePath)) {
      DocumentStream documentStream = table.find(fieldPaths)) {
      for(Document document : documentStream) {
        System.out.println(document);
      }
    }
  }

Returning single whole documents

Call the findById() method of a Table object that represents the table. When calling the method, pass the value of the _id field in the document.

The method returns a Document object that contains the OJAI document.

  public void findDocById(String tablePath, String _id) {
    try(Table table = MapRDB.getTable(tablePath)) {
      System.out.println(table.findById(_id));
    }
  }

Returning single partial documents

Call the findById() method of a Table object that represents the table. When calling the method, pass the value of the _id field in the document, as well as a String object that contains the path or paths of the fields to include in the results. The field paths are in dotted notation.

The method returns a Document object that contains the partial JSON document.

  public void findPartialDocById(String tablePath, String _id, String fieldPath) {
    try(Table table = MapRDB.getTable(tablePath)) {
      System.out.println(table.findById(_id, fieldPath));
    }
  }