ObjectDB Database Search

are assigned as arguments. Path expressions that navigate from one object to another. Instances of user ... . But more often they are used in JPQL path expressions that navigate to values of simple types (number, boolean ... , and they can be used in ordering . Navigation through Path Expressions A path expression always starts

' , ''. as parameters - when string values are assigned as arguments. as  path expressions - in ... is always the string to check for a match (usually a path expression) and the right operand is always the pattern ... , as shown in the following examples: // Create path and parameter expressions: Expression path

, -12.5 . as parameters - when numeric values are assigned as arguments. as  path expressions - in ... Java numeric object: // Create path and parameter expressions: Expression path = country ... ( path , param); // 2 expressions Expression sum2 = cb. sum ( path , 1000); // expression + number

a join variable that is bound to the c1.neighbors path and iterates only over objects in ... variable that serves as a root and additional join variables that are bound to path expressions. Join variables can also be bound to path expressions that are based on other join variables that appear

JPA Interface Path Type Parameters: - the type referenced by the path Super Interfaces: Expression Represents a simple or compound attribute path from a bound type or collection, and is a "primitive" expression. Since: JPA 2.0 The Paths and Types in JPQL and Criteria API article explains

the "SELECT *" expression (which is commonly used in SQL). Projection of Path Expressions JPQL ... path expressions , such as c.name , in query results is referred to as projection. The field values ... value path expressions can be used in the SELECT clause. Collection and map fields cannot be included

members and attaching the @Index annotation directly to the indexed field. Multi Part Path Index The members attribute is also required in order to define indexes on multi part paths : @Entity @Index ... that are stored as part of the entity. Therefore, indexes on multi part paths are only allowed

path ) directly, bypassing the need for a persistence unit. Any string that starts with objectdb ... ), an absolute path or a relative path of a local database file has to be specified (e.g. "my.odb ... ; "objectdb:my-db.tmp" ). To use client server mode, a URL in the format objectdb://host:port/ path

: This page explains how ObjectDB configuration works in general. The Configuration Path By default ... ) is derived from the location of the objectdb.jar file. It is defined as the path to the directory in ... the configuration file is loaded from $objectdb/objectdb.conf . You can specify an alternative path by setting

directory a path to it has to be specified. Alternatively, you can run the Explorer by double clicking ... the shell file, setting the paths to the objectdb.jar file and to the JVM). Connecting to the Database ... for a client-server connection. You also have to specify a database path on the server, possibly using

JPA Method in javax.persistence.criteria. Path Path get (   String attributeName ) Create a path corresponding to the referenced attribute. Note: Applications using the string-based API may need to specify the type resulting from the get operation in order to avoid the use of Path

JPA Method in javax.persistence.criteria.CriteriaBuilder Path treat (    Path   path ,    Class  type ) Downcast Path object to the specified type. Parameters: path - path type - type to be downcast to Return: Path object of the specified type Since: JPA 2.1

JPA Method in javax.persistence.criteria. Path Path get (    SingularAttribute  attribute ) Create a path corresponding to the referenced single-valued attribute. Parameters: attribute - single-valued attribute Return: path corresponding to the referenced attribute Since: JPA 2.0

JPA Method in javax.persistence.criteria. Path Expression type () Create an expression corresponding to the type of the path . Return: expression corresponding to the type of the path Since: JPA 2.0

JPA Method in javax.persistence.criteria. Path Path getParentPath () Return the parent "node" in the path or null if no parent. Return: parent Since: JPA 2.0

JPA Method in javax.persistence.criteria. Path Bindable getModel () Return the bindable object that corresponds to the path expression. Return: bindable object corresponding to the path Since: JPA 2.0

JPA Method in javax.persistence.criteria. Path Expression get (    PluralAttribute  collection ) Create a path corresponding to the referenced collection-valued attribute. Parameters: collection - collection-valued attribute Return: expression corresponding to the referenced attribute Since: JPA 2.0

JPA Method in javax.persistence.criteria. Path Expression get (    MapAttribute  map ) Create a path corresponding to the referenced map-valued attribute. Parameters: map - map-valued attribute Return: expression corresponding to the referenced attribute Since: JPA 2.0

, a boolean path (a field or a property) is represented by Path : Path isInUN = country. get ("isInUN"); Path isInEU = country. get ("isInEU"); Path isInOECD = country. get ("isInOECD"); Predicate

.objectdb.Enhancer If objectdb.jar is not in the current directory a path to it has to be specified ... and enhancer.sh on Unix/Linux) from the ObjectDB bin directory. To use that script you have to edit the paths ... suffix) in the CLASSPATH - path to class or jar file(s), *? wildcards supported include: -cp  

: The path attribute specifies a directory in which the temporary files are generated. The $temp prefix can be used to represent the system default temporary path , as demonstrated above. Using RAM ... the Explorer easier. The element General logging settings are specified in the element: The path

file is generated in the directory of the database file, but any other alternative path can be specified by the path attribute. Using separate storage devices (e.g. disks) for the recovery file ... other alternative path can be specified by the path attribute. The mode attribute (whose value is "all" or

connections limit. The element The element has one attribute, path , which specifies the location ... above), represents the ObjectDB home directory . The data path of an ObjectDB server is similar ... . When connecting to the server the path that is specified in the URL connection is resolved relative

is not in the current directory a path to it has to be specified. The tool main class is com.objectdb.Doctor and the only command line argument for running a database diagnosis is the path ... ( old.odb above) is the path to the original (corrupted) database file. The second argument ( new.odb

indicating which paths under the server data directory the user is allowed to access: The required path attribute specifies a directory path relative to the root data directory. Permission to access ... under that directory. Therefore, path "/" indicates permission to access any directory in the data directory

on a different physical device by setting the path attribute in the configuration . The recording ... is not in the current directory a path to it has to be specified. The tool's main class is com.objectdb.Replayer and the required argument is the path to the database file (e.g. my.odb as shown

persistence unit in an XML file or you can simply provide the file path of the ObjectDB database ... an argument, but when using ObjectDB, any valid database file path (absolute or relative ... ). If no database file exists yet at the given path ObjectDB will try to create one. The EntityManagerFactory

. Only identification variables and path expressions are currently supported in the GROUP BY clause by all the JPA ... the group by using path expressions . The following query groups countries in Europe by their currency ... GROUP BY c.currency Because grouping is performed in this query on a path expression , this query

: $ java -cp objectdb.jar com.objectdb.Server If objectdb.jar is not in the current directory a path ... a configuration path explicitly on the command line: $ java com.objectdb.Server -conf my_objectdb.conf ... script, server.sh , is included in the bin directory. To use that script you have to edit the paths

Collections may appear in JPQL queries: as parameters - when collections are assigned as arguments. as  path expressions - in navigation to persistent collection fields. IS [NOT] EMPTY ... examples: // Create path and parameter expressions: Expression languages = country. get ("languages

 above could generate a backup whose full path is  c:\objectdb\backup\201912312359\test.odb ... is specified as a value for the target parameter it represents a path relative to the ObjectDB home

). Map keys and values are indexable. Nested paths inside embedded objects are indexable. Indices ... Expressions Path navigation expressions using the dot (.) operator. Comparison operators (

is represented by a separate child element with two required attributes: path , which specifies the path to the file, and password , which specifies a password that is needed in order to use the file

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

, ...). Paths , navigation and types ( get , type ). Arithmetic expressions ( sum , diff , prod

;following page sections: Literals and Dates  ( literal , nullLiteral , currentDate , ...). Paths

expressions can be used in the ORDER BY clause. Some JPA implementations are more restrictive. Path

: Expression , FetchParent , Path Represents a bound type, usually an entity that appears in the from clause ... for Joins of associations, embeddables, and collections belonging to the type, and for Paths of attributes ...  map) Create a path corresponding to the referenced map-valued attribute. Parameters: map - map

where represents the installation path of ObjectDB. If you add odbse.jar to the classpath, you can run ... configuration file, as shown below: You can also specify an explicit path to the configuration file: $ java ... , you have to edit the path to the odbse.jar file, and to the JVM. It is recommended that you do not

, if the installation path of the ObjectDB Free Edition on Windows is c:\objectdb , you can start the Explorer using the following command: $ java -jar c:\objectdb\lib\odbfe.jar If a database path ... (but with different paths ) can run the Explorer on other operating systems. Starting the Explorer on Windows

either its absolute path or its relative path . The JDOHelper.getPersistenceManagerFactory ... should be used to access that database. To use embedded mode, an absolute path or a relative path of a local ... ://host:port/ path has to be specified. In this case, a database server is expected to be running on a machine

redirection to the controller path : Assuming that Tomcat 6.0 is installed as a server in your NetBeans ... \objectdb.jar (use the path to objectdb.jar on your computer). Click the Close button. Right click

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 : If Tomcat 6.0 is installed as a server in your Eclipse - 

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

as a new server by clicking the New Runtime... button . Follow the instructions and specify the path

the objectdb.jar file, using: Right Clicking on the Project Properties Java Build Path Libraries Add External

the path to Tomcat. Click the Finish button to create the project (Frameworks are not required). To add

the following paths (in the order shown): META-INF/package.jdo WEB-INF/package.jdo package.jdo a/package.jdo ... paths (in the order shown): META-INF/package.jdo WEB-INF/package.jdo package.jdo X.jdo A metadata file ... classes can be specified in a package.jdo file located in META-INF , WEB-INF or in any other path

paths in the database). Static and final fields can never be persistent. The transient modifier ... user classes -d output path for enhanced classes -s include sub directories in search -noopt disable

file does not exist in that path , a new database file is created automatically. To enable updating