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Database Schema Evolution

in the new schema for which there is a matching field in the old schema, the new field in the new entity object is initialized using the value of the matching old field in the original entity object. Fields in the new schema that do not have matching fields in the old schema are initialized

Strings in JPQL and Criteria Queries

. LIKE - String Pattern Matching with Wildcards The [NOT] LIKE operator checks if a specified string matches a specified pattern. The pattern  may include ordinary characters as well as the following wildcard characters: The percent character ( % ) - which matches zero or more of any character

Recovery file does not match db file

Just rebooted my production server, which had been running fine for months. When it came up, these errors started: ObjectDB 2.3.1_03] javax.persistence.PersistenceException Recovery file '/auctionologies/java/storage.odb$' does not match db file '/auctionologies/java/storage.odb' (error 145

Object comparation never matches

2.4.6] javax.persistence.NoResultException" "No matching results for a unique query (error 782

Documentation problem - license does not match implementation

Documentation problem - license does not match implementation

FROM clause (JPQL / Criteria API)

outer variable value (e.g. any Country ) that has no matching inner variable (e.g. a Capital ... is equivalent to LEFT JOIN). When using OUTER JOIN, if a specific outer variable does not have any matching inner value it gets at least a  NULL value as a matching value in the FROM iteration

Schema Update

with persistable classes that have been renamed or moved in the IDE, with no matching schema configuration ... the application is run only with the configuration that matches these changes exactly. The default

JPA Lifecycle Events

which is the source of the lifecycle event. The argument can have any type that matches the actual value

SELECT clause (JPQL / Criteria API)

must have a compatible constructor that matches the SELECT result expressions, as follows: package example

Database Transaction Replayer

ObjectDB can record its internal engine operations in special binary recording (journal) files. Recording is enabled by default and can be disabled in the configuration . The ObjectDB Replayer tool can apply recorded database operations on a matching database backup (if available). This ability

Index Definition

a full index scan. Even better, if the field order as defined in the index matches the field order used in

BIRT/ODA ObjectDB Driver

and restarting the IDE. Note: See this issue regarding matching the driver version to the ObjectDB server

Paths and Types in JPQL and Criteria API

class must contain a persistent field (or property) with a matching name. The path expression

Locking in JPA

if the version numbers do not match , indicating that the object has been modified by another user

NoResultException: No matching results for a unique query

I am very often getting a "com.objectdb.o._NoResultException: No matching results for a unique query" when modifying my already persisted entities within a transaction. I cannot replicate it however because it happens infrequently. The weird thing is that the entity nevertheless gets comitted

Step 1: Install BIRT and ObjectDB Driver

matching the driver version to the ObjectDB server version when using client-server mode. The next step is creating a BIRT Report project .

javax.persistence.metamodel.PluralAttribute$CollectionType

must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace

javax.persistence.criteria.Predicate$BooleanOperator

with the specified name. The string must match exactly an identifier used to declare an enum constant in

javax.persistence.PessimisticLockScope

with the specified name. The string must match exactly an identifier used to declare an enum constant in

javax.persistence.criteria.CriteriaBuilder$Trimspec

constant of this type with the specified name. The string must match exactly an identifier used

javax.persistence.LockModeType

with the specified name. The string must match exactly an identifier used to declare an enum constant in

javax.persistence.metamodel.Bindable$BindableType

with the specified name. The string must match exactly an identifier used to declare an enum constant

javax.persistence.metamodel.Attribute$PersistentAttributeType

(String name) Returns the enum constant of this type with the specified name. The string must match

javax.persistence.SynchronizationType

name. The string must match exactly an identifier used to declare an enum constant in this type

javax.persistence.CascadeType

the enum constant of this type with the specified name. The string must match exactly an identifier

javax.persistence.PersistenceContextType

) Returns the enum constant of this type with the specified name. The string must match exactly

javax.persistence.SharedCacheMode

must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace

javax.persistence.ConstraintMode

constant of this type with the specified name. The string must match exactly an identifier used

javax.persistence.TemporalType

must match exactly an identifier used to declare an enum constant in this type. (Extraneous

javax.persistence.AccessType

must match exactly an identifier used to declare an enum constant in this type. (Extraneous

javax.persistence.ParameterMode

the enum constant of this type with the specified name. The string must match exactly an identifier used

javax.persistence.FlushModeType

the enum constant of this type with the specified name. The string must match exactly an identifier

javax.persistence.DiscriminatorType

) Returns the enum constant of this type with the specified name. The string must match exactly

javax.persistence.ValidationMode

constant of this type with the specified name. The string must match exactly an identifier used

javax.persistence.CacheStoreMode

with the specified name. The string must match exactly an identifier used to declare an enum constant in

[ODB1] Chapter 7 - JDOQL Queries

(and will be supported by JDO 2.0) is the match ( ... ) method. It provides string comparison using regular

javax.jdo.Query

of the query obtains the values of the parameters and matches them against the declared parameters in ... must match the type of the passed parameters, except that the passed parameters might need to be unwrapped ... . The keys in the Map and the declared parameters must exactly match or a JDOUserException is thrown

javax.jdo.PersistenceManagerFactory

groups. FetchGroup s are made unmodifiable before being added. FetchGroup s that match existing FetchGroup s replace the corresponding FetchGroup s. The replaced FetchGroup s become unscoped. Match ... . Existing FetchGroup s that match parameter FetchGroup s are removed. Parameter FetchGroup s that do not

Query.setResultClass(cls) - JDO Method

) or by matching . If the result class does not satisfy these conditions, a JDOUserException ... specification matches the parameters of the constructor by position and type ... and one or more public set or put methods or fields. Each result expression must match one of: a public field

PersistenceManagerFactory.removeFetchGroups(groups) - JDO Method

that match parameter FetchGroup s are removed. Parameter FetchGroup s that do not match any existing FetchGroup are ignored. Removed FetchGroup s become unscoped. Match is based on identical class

PersistenceManagerFactory.addFetchGroups(groups) - JDO Method

are made unmodifiable before being added. FetchGroup s that match existing FetchGroup s replace the corresponding FetchGroup s. The replaced FetchGroup s become unscoped. Match is based on identical class and equal

javax.jdo.JDOHelper

the parameter. The order of iteration of the returned Collection exactly matches the order of iteration ... element in the parameter. The order of instances of the returned array exactly matches the order

Query.executeWithArray(parameters) - JDO Method

of the parameters and matches them against the declared parameters in order. The names of the declared parameters are ignored. The type of the declared parameters must match the type of the passed

PersistenceManagerFactory.setServerTimeZoneID(timezoneid) - JDO Method

. The parameter is a String suitable for use with TimeZone.getTimeZone(). The String must match an ID ... of the server Throws: JDOUserException - if the parameter does not match an ID from TimeZone

javax.jdo.annotations.SequenceStrategy

) Returns the enum constant of this type with the specified name. The string must match exactly

javax.jdo.annotations.NullValue

. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous

javax.jdo.annotations.PersistenceModifier

with the specified name. The string must match exactly an identifier used to declare an enum constant in

javax.jdo.annotations.VersionStrategy

. The string must match exactly an identifier used to declare an enum constant in this type

JDOHelper.getObjectIds(pcs) - JDO Static Method

of instances of the returned array exactly matches the order of instances of the parameter array

JDOHelper.getObjectIds(pcs) - JDO Static Method

. The order of iteration of the returned Collection exactly matches the order of iteration