Teiid 团队今天很高兴的发布了 Teiid 8.1 正式版，基于 JBoss AS 7.1.1，如果你正在使用 Teiid 8.0，我们强烈建议立即更新到这个版本，该版本解决了 100 多个问题，同时包含很多新特性。
在 Teiid 6.x 中，Teiid 支持一个“嵌入式”版本，但该特性在 7.x 中被移除，现在它又回来了，不过有了一些不同的目的。
Teiid 8.1-Final 其他方面的新特性还包括：
TEIID-1366 VDB Reuse - a vdb.xml can now declare imported vdbs to reuse metadata. This is a huge feature, will do another blog on this very soon.
TEIID-2061 Comparable Object - the system property org.teiid.comparableObject can be set to use OBJECT values in comparison/sorting/grouping operations. It is expected that the object values correctly implement Comparable.compareTo.
TEIID-2083 Admin Metadata - you can now retrieve metadata in DDL from the admin api via the getSchema method. This works for Designer defined VDBs too. Design a VDB in Designer and deploy it and ask for its metadata in DDL.
TEIID-2105 Improved VDB loading - vdb loading logic was refined to make administration easier. ExecutionFactory now has is/setSourceRequiredForMetadata() to indicate whether a source connection is needed for the getMetadata call.
TEIID-1598 Translator Result Caching - translators can interact with the result set caching facility via a CacheDirective. See the Developer's Guide for more.
TEIID-2077 Result reuse - the engine will automatically detect if the same source query is used multiple times in a plan and reuse the result rather than issuing another query.
TEIID-2113 Misc parser improvements - the parser will now accept the LATERAL keyword for defining a LATERAL join (previously we just used the TABLE keyword), unary negation is now supported e.g. -col1, the FOR keyword is optional for TEXTAGG, and the BNF documentation was dramatically improved.
TEIID-2036 Dependent Join Array Comparison - platforms supporting array comparisons can have multi-attribute dependent joins pushed down as array comparisons. Oracle, PG, and H2 translators are already marked as supporting array types.
主页：http://www.jboss.org/teiid
下载：http://www.jboss.org/teiid/downloads.html
来自:开源中国社区
