Querydsl

Version 190 by Timo Westkämper
on Jan 28, 2010 23:33.

<< Changes from 189 to 190

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Current by Timo Westkämper
on Sep 06, 2010 15:19.

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-h2. Querydsl - Typesafe queries for Java
-Easy and safe to use, the right tool for Adaptive Domain Development.
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-Querydsl (spell: query diesel) is a framework which enables the construction of statically typed SQL-like queries. Instead of writing queries as inline strings or externalizing them into XML files they can be constructed via a fluentDSL/API like Querydsl.
+Querydsl is a framework which enables the construction of type-safe SQL-like queries for multiple backends including JPA, JDO and SQL.
+Instead of writing queries as inline strings or externalizing them into XML files they are constructed via a fluent API.
-* almost none syntactically invalid queries allowed (type-safe on all levels)
-* domain types and properties can be referenced safely (no Strings involved!)
+* almost no syntactically invalid queries allowed (type-safe on all levels)
+* domain types and properties can be referenced safely (no Strings involved\!)
-* incremental Query defintion is easier
+* incremental Query definition is easier
+h2. Modules
+|| Module \\ || description \\ || artifactId\\ || depends on \\ ||
+| *Core* \\ | core API of Querydsl \\ | querydsl-core\\ | |
+| *APT* \\ | APT based code generation \\ | querydsl-apt\\ | Core \\ |
+| *SQL* \\ | JDBC/SQL support \\ | querydsl-sql\\ | Core, APT \\ |
+| *Lucene* \\ | Lucene support \\ | querydsl-lucene\\ | Core \\ |
+| *Collections* \\ | Java collections support \\ | querydsl-collections\\ | Core \\ |
+| *HQL* \\ | HQL/JPQL support \\ | querydsl-hql\\ | Core, APT, SQL \\ |
+| *JDOQL* \\ | JDOQL support \\ | querydsl-jdoql\\ | Core, APT |
+| *Hibernate Search* \\ | Hibernate Search support \\ | querydsl-hibernate-search\\ | Core, Lucene \\ |
-h3. *JPA / Hibernate*
+h3. *JPA / Hibernate*
+* [Getting started with Querydsl using Hibernate|http://source.mysema.com/static/querydsl/1.8.0/reference/html/ch02s02.html]
-* [Getting started with Querydsl using Hibernate|http://source.mysema.com/static/querydsl/1.1.0/reference/html/ch02s02.html]
-h3. *JDO*
-* via the querydsl-jdoql module
+h3. *JDO*
+* [Getting started with Querydsl using JDO|http://source.mysema.com/static/querydsl/1.8.0/reference/html/ch02.html]
+* via the querydsl-jdoql module
-* [Getting started with Querydsl using JDO|http://source.mysema.com/static/querydsl/1.1.0/reference/html/ch02.html]
-h3. *Java Collections*
-* via the querydsl-collections module
-* [Getting started using Querydsl for Collections|http://source.mysema.com/static/querydsl/1.1.0/reference/html/ch02s03.html]
+h3. *Java Collections*
-h3. *SQL*
-* via the querydsl-sql module
-* tested with Derby, HSQLDB and MySQL
+* [Getting started using Querydsl for Collections|http://source.mysema.com/static/querydsl/1.8.0/reference/html/ch02s03.html]
+* via the querydsl-collections module
-h3. *RDF*
+h3. *SQL*
+* [Getting started using Querydsl for SQL|http://source.mysema.com/static/querydsl/1.8.0/reference/html/ch02s04.html]
+* via the querydsl-sql module
+* supports Derby, HSQLDB, MySQL (5.1), Postgres (8.4), Oracle (10/11) and MS SQL Server (2008)
+h3. *RDF*
+h3. *Lucene*
+* [Getting started using Querydsl for Lucene|http://source.mysema.com/static/querydsl/1.8.0/reference/html/ch02s05.html]
+* via the querydsl-lucene module
+h3. *Hibernate Search*
+* [Getting started using Querydsl for Hibernate Search|http://source.mysema.com/static/querydsl/1.8.0/reference/html/ch02s06.html]
+* via the querydsl-hibernate-search module
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-|| Most Recent Version | 1.1.0 ||
-|| Javadocs | [v 1.1.0|http://source.mysema.com/static/querydsl/latest/apidocs] ||
+|| Most Recent Version | 1.9.5 ||
+|| Javadocs | [v 1.9.5|http://source.mysema.com/static/querydsl/1.9.5/apidocs] ||
+|| Downloads | [Downloads] ||
-h3. Got issues with Querydsl?
+h2. Querydsl users talking
-Post a bug on *[Launchpad|https://bugs.launchpad.net/querydsl]* or ask a question in the *[Forum|http://source.mysema.com/forum/mvnforum/index]*.
+"If you are using JPA and want to write typesafe queries in an IDE, then stop using the JPA 2.0 Criteria API and start using Querydsl. Today."
-{socialbookmarks}
+[Bob Walker|http://rjewalker.blogspot.com/2010/06/querydsl-vs-jpa-20-criteria-api-first.html]
+"So, here is my tip to anyone thinking about using a Criteria API: Give Querydsl a try! By the way, did I mention that it can also be used with JDO, Lucene, JDBC and even plain collections? "
-h2. User comments
+[Luis Fernando Planella Gonzalez|http://luisfpg.blogspot.com/2010/05/jpa-2-criteria.html]
-Go [here|User comments] for User comments.
+"Querydsl rocks! It's the best thing since sliced bread for data access in Java."
+[Alex Besogonov|http://source.mysema.com/forum/mvnforum/viewthread_thread,23]
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+"Using querydsl you keep the reference to your HibernateQuery object and you can apply as many joins, wheres etc as you can, in any order, so that you can get a totally mutable hql query without ugly string concatenation. "
+[Lukasz Wisniewski|https://answers.launchpad.net/querydsl/+question/92766]
+"Querydsl has been easy to get running, and easy to write compact and readable queries in. Integration in an existing project has been as painless as it could be, and we have had almost no problems."
+[Stein Magnus Jodal|http://daim.idi.ntnu.no/masteroppgave?id=4414]
+h2. Got issues with Querydsl?
+Post a bug on *[Launchpad|https://bugs.launchpad.net/querydsl]* or ask a question in the *[Forum|http://source.mysema.com/forum/mvnforum/index]*.
+{socialbookmarks}
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