| <?xml version="1.0" encoding="UTF-8"?> |
| <faqs xmlns="http://maven.apache.org/FML/1.0.1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" |
| xsi:schemaLocation="http://maven.apache.org/FML/1.0.1 http://maven.apache.org/xsd/fml-1.0.1.xsd" |
| title="What's new in MetaModel 2.0" toplink="false"> |
| |
| <part id="features"> |
| <title>New features</title> |
| |
| <faq id="update_api"> |
| <question>API for performing updates (write operations) on data</question> |
| <answer> |
| <p>The major story for MetaModel 2.0 has been to enable writing of data to your |
| datastores. To allow this we've designed an API for updating data that has high |
| isolation properties, provides fluent update builders and works cross different |
| datastore backends.</p> |
| <ul> |
| <li>There's an example of the new API on the |
| <a href="example_inserting_data.html">Inserting data</a> example page.</li> |
| <li>And the API documentation for the new <a href="apidocs/org/eobjects/metamodel/UpdateableDataContext.html">UpdateableDataContext</a> interface also describes the mechanism.</li> |
| </ul> |
| <p>The new update API supports creating tables and inserting records into tables.</p> |
| </answer> |
| </faq> |
| |
| <faq id="update_csv_excel_jdbc"> |
| <question>Create data in CSV files, Excel spreadsheets and JDBC databases</question> |
| <answer> |
| <p>The data updating API has been implemented for CSV files, Excel spreadsheets |
| and JDBC databases. While we want to provide implementations for the remaining |
| datastores also, these are our first set which |
| covers the most popular datastore types.</p> |
| </answer> |
| </faq> |
| |
| <faq id="styling"> |
| <question>Support for visual styling of values</question> |
| <answer> |
| <p>Some datastores (Excel in particular) support visual styling of values. In MetaModel |
| 2.0 we include the ability to get styling attributes of values in order to see eg. if |
| values are colored, written in bold text or have other special visual representations. |
| Styling in MetaModel is compatible with Cascading Style Sheets capabilities, so it allows |
| for easy utilization in web applications and the like.</p> |
| <p>The styling information is available in the Row interface, which now includes a number |
| of getStyle(...) methods.</p> |
| </answer> |
| </faq> |
| </part> |
| |
| <part id="api"> |
| <title>Changes to the existing API</title> |
| |
| <faq id="packages_structure"> |
| <question>Modularization of packages</question> |
| <answer> |
| <p>The packages in MetaModel have been slightly revised. Each datastore |
| module now has it's own package, such as <i>org.eobjects.metamodel.jdbc</i> |
| and <i>org.eobjects.metamodel.csv</i>.</p> |
| <p>If you've used the DataContextFactory to retrieve your DataContexts, |
| then there should be no need for changing consuming code.</p> |
| </answer> |
| </faq> |
| |
| <faq id="in_operator"> |
| <question>Use of IN operator</question> |
| <answer> |
| <p>For the first time in MetaModel's history, we've added an operator, namely IN.</p> |
| <p>IN works in MetaModel like it works in SQL. It allows you to define an array or collection |
| of values that you wish to use in a WHERE clause, and set a filter that includes any record |
| where the value of the record match with either of the values in your IN set.</p> |
| </answer> |
| </faq> |
| |
| <faq id="core_and_querypostprocessor_merge"> |
| <question>Core and Querypostprocessor modules have been merged</question> |
| <answer> |
| <p>The two modules "MetaModel-core" and "MetaModel-querypostprocessor" have been merged, |
| and are now just "MetaModel-core". The reason for this was that there was a common |
| dependency for both modules by all other modules and also a strong interdependency |
| between the two. For the sake of managability and ease for our contributors, the two |
| modules are now merged.</p> |
| </answer> |
| </faq> |
| |
| </part> |
| |
| </faqs> |