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ObjectDB Object Database Features

. Nested paths inside embedded objects are indexable. Indices are also used for fast ordering and aggregate ... (COUNT, SUM, AVG, MAX, MIN). Query Expressions Path navigation expressions using the dot (.) operator
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javax.persistence.criteria.SetJoin

>, From<Z,E>, Join<Z,E>, Path<E>, PluralJoin<Z,Set<E>,E>, Selection<E>, TupleElement<E> The SetJoin ... - join type Returns: the resulting fetch join Since: JPA 2.0 Path<Y> get(String attributeName) Create a path corresponding to the referenced attribute. Create a path corresponding to the referenced
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javax.persistence.criteria.ListJoin

>, From<Z,E>, Join<Z,E>, Path<E>, PluralJoin<Z,List<E>,E>, Selection<E>, TupleElement<E> The ListJoin ... - join type Returns: the resulting fetch join Since: JPA 2.0 Path<Y> get(String attributeName) Create a path corresponding to the referenced attribute. Create a path corresponding to the referenced
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javax.persistence.criteria.CollectionJoin

>, FetchParent<Z,E>, From<Z,E>, Join<Z,E>, Path<E>, PluralJoin<Z,Collection<E>,E>, Selection<E>, TupleElement<E ... - target of the join jt - join type Returns: the resulting fetch join Since: JPA 2.0 Path<Y> get(String attributeName) Create a path corresponding to the referenced attribute. Create a path
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Database Replication and Clustering

the configuration: <server>     <connection port="6001" max="100" />     <data path="$objectdb/db
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Date and Time in JPQL and Criteria Queries

Date and time expressions may appear in JPQL queries: as date and time literals - e.g. {d '2011-12-31'}, {t '23:59:59'}. as parameters - when date and time values are assigned as arguments. as path expressions - in navigation to persistent date and time fields. as results of predefined JPQL current
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JPA Query Expressions (JPQL / Criteria)

expressions are provided as follows: Literals and Dates (literal, nullLiteral, currentDate, ...). Paths
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Step 7: Run the Spring Web App

to the controller path: <jsp:forward page="guest.html" /> Assuming that Tomcat 6.0 is installed ... :\objectdb\bin\objectdb.jar (use the path to objectdb.jar on your computer). Click the Close button
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Step 7: Run the Spring Web App

At this stage your project should have the following structure: Use copy and paste to replace the content of the index.jsp file (which serves as the default front page) with the following redirection to the controller path: <jsp:forward page="guest.html" /> If Tomcat 6.0 is installed as
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Step 1: Create a Java EE 6 Web Project

... button and the Download additional server adapters link. Follow the instructions and specify the path

Getting Started

ObjectDB is very easy to use. Follow the Getting Started Tutorial and the Quick Tour manual chapter and in minutes you may be able to write and run first Java programs against ObjectDB.

Prior knowledge or experience in database programming (SQL, JDBC, ORM, JPA, etc.) is not required, but some background in using the Java language is essential.

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