ObjectDB Database Search
51-100 of 200 resultsInserted entities with strings as keys and indices needs more and more ram memory in comparing to primitive integers as keys and indices Hello, I have a problem with inserting of many entities. We use strings as primary key and indices ... . Can you explain this and do you have an idea for the case that strings are used for keys and indices? See both examples. btc_es BTC EmbeddedSystems Correction. The case with strings as primary key | |
String Encoding Issue Hi all Encounter a character encoding issue when i try to retrieve a String column containing Chinese character. Retrieve a String column on odb file. em = emf.createEntityManager(); Query ... ();) { System.out.println(itr.next().getName()); // name is a string column | |
Memory consumption of empty Strings for an enhancement of objectdb: My program has several entities which contain many String . Often some of these String are empty (""). To avoid unnecessary memory consumption, the String within the entities are initialized like: String firstName = ""; In this case every "empty" attribute shares the same String | |
Possible issue with String fields to commit transaction: String index out of range: 5 (error 613) at com.objectdb.jpa.EMImpl.commit ... .StringIndexOutOfBoundsException: String index out of range: 5 at java.lang. String .charAt( String .java:695) at com.objectdb.o.SYH ... When I comment out the fields that are strings all works out fine. I tried replacing the jdbc field | |
failure to enforce NOT NULL for java.lang.String.IDENTITY) private Long id; @Unique @Persistent(nullValue=NullValue.EXCEPTION) private String username; public Long getId() { return id; } public void setId(Long id) { this.id = id; } public String getUsername() { return username; } public void setUsername( String username) { this.username = username | |
ORDER BY problem, when String starts with language specific character anaq x ObjectDB uses the ordinal Java String lexicographical order, which is based on the order ... fields - name and normalizedName , and just keeping strings in name using the decomposed form ... .*; public final class T352 { public static void main( String [] args)   | |
Error reading UTF string Good day, I have many errors like this, when try to use java.util.UUID as string in querys. 16:18 ... .objectdb.o.InternalException: Error reading UTF string at org.jboss.as.ejb3.tx.CMTTxInterceptor ... reading UTF string at granat.dp.ejb.PersonBean.find(PersonBean.java:287) [DP-ejb.jar:] at sun.reflect | |
"Unsupported auto value type java.lang.String" when persisting new instance. String for field hr.hzmo.network.model.Device.ID (error 323) at com.objectdb.jpa.EMImpl.persist ... .java:71) Caused by: com.objectdb.o.UserException: Unsupported auto value type java.lang. String ... for primary key: @Id @GeneratedValue(strategy=GenerationType.IDENTITY) private String ID; kiki | |
String Contains Query Result - Possible? Hi, I have a managed database for an Entity, "Program", containing a String field, "description", that is effectively a unique sub- string of a system generated description. Example ... even when using wildcards as the input string will be larger than the string being searched for. Presently | |
substring works with string but not with char with a string parameter select f from Foo f where substring(f.name, 1, 1) = ?1 but when i use a char ... of the left side expression is String and the type on the right side expression (the parameter) is Character . In ObjectDB as in Java char is comparable to int but not to String . Maybe an exception | |
String representation of a query Hi, Is it possible to get a JPQL string having a Query object instance? JpaQuery class doesn't ... with JPQL string and parameters map to find and optimize the most ineffective cases. kborkowski Karol Borkowski Following your request a toString implementation that returns the query string | |
Schema migration - long to String Hi, I need to change field type in our model from long to String . After changing filed type in our model and repairing database with doctor, most of our entities is gone. Doctor puts some errors ... documentation? lwalkowski Lukasz Walkowski Changing a field from long to String should not require any | |
order by string with numbers Hi Anyone could help me I need to order a string for example user1, user2, ..., user1000 I found sql solution but I would like to use criteria builder and I don´t if exist CAST and AS UNSIGNED ... .parseInt is supported by ObjectDB in JPQL string queries. You may try using Integer.parseInt as a JPA criteria query function . support Support | |
Error reading UTF string reading UTF string com.objectdb.o.InternalException: Error reading UTF string at com.objectdb.o.BYR | |
like operator (String); objectdb-2.4.7_07, alsothere exists an @Index for String email   | |
String comparison in query where clause I am having trouble getting a simple string comparison to work in an SQL "where" clause. It is my understanding that queries are case sensitive by default and I do not want that, so I am constructing the query as follows... SELECT e FROM Exercise AS e WHERE UPPER(e.name) = ?0 and then I | |
General Performance Issues Illustrated with a Specific Method listPatientsByIDsWithBasicData( String ids) { Long st = new Date().getTime(); System.out.println ... ().equals("")) { return cs; } String jpql; Map m; m = new HashMap(); jpql = "select new lk.gov ... (cascade = CascadeType.ALL,fetch = FetchType.EAGER) private Person person; @Index private String phn | |
Criteria Query Selection and Results.persistence.criteria package, since they might be useful also in string based JPQL queries. Using tuples | |
JPA Persistence Unit should be used. ObjectDB is represented by the com.objectdb.jpa.Provider string . If not specified, the first JPA | |
Server User List permissions are granted. The comma separated string value may contain the following permissions | |
ORDER BY clause (JPQL / Criteria API) whose type is comparable (i.e. numbers, strings and date values) and is derived from the SELECT | |
JPA Primary Key.lang. String . java.util.Date , java.sql.Date , java.sql.Time , java.sql.Timestamp. Any enum type | |
Enable intern() for Retrieved Strings Implement a setting, where the developer can specify which Strings should be loaded via the String ... of instantiating every first name with a new String , the user should be able to specify that this field should be loaded via String . intern() (with all its advantages and disadvantages). mlaggner Manuel Laggner | |
Collation and String Order ObjectDB should support selecting collation when a new database is created. The collation will affect the way strings are sorted in queries (with ORDER BY). Currently strings are always ordered by Unicode order, and a workaround that enables controlling the order is to use normalizing, as | |
@Enumerated(EnumType.STRING) annotation inhibits proper execution of IN expressions. When the following annotation is present on an enum type entity field: @Enumerated(EnumType. STRING ) Queries using JPQL IN expressions on this field won't work correctly anymore. This issue ... ;to @Enumerated(EnumType. STRING ) , as your suggestion. It happened because ObjectDB considered | |
Error reading UTF string (Serialized Objects in Explorer)Error reading UTF string (Serialized Objects in Explorer) | |
InterfaceRef jakarta.persistence.EntityManager - class of entity graph Return: entity graph Since: JPA 2.1 EntityGraph createEntityGraph ( String ... Since: JPA 2.1 Query createNamedQuery ( String name) Create an instance of Query for executing ... - if a query has not been defined with the given name or if the query string is found to be invalid | |
InterfaceRef jakarta.persistence.metamodel.EmbeddableType Methods Attribute getAttribute ( String name) Return the attribute of the managed type ... Since: JPA 2.0 CollectionAttribute getCollection ( String name) Return the Collection-valued ... Since: JPA 2.0 CollectionAttribute getCollection ( String name, Class elementType) Return | |
InterfaceRef jakarta.persistence.metamodel.ManagedType Public Methods Attribute getAttribute ( String name) Return the attribute of the managed type ... ( String name) Return the Collection-valued attribute of the managed type that corresponds ... in the managed type Since: JPA 2.0 CollectionAttribute getCollection ( String name, Class | |
InterfaceRef jakarta.persistence.metamodel.IdentifiableType or mapped superclass type. Since: JPA 2.0 Public Methods Attribute getAttribute ( String name ... ( String name) Return the Collection-valued attribute of the managed type that corresponds ... ( String name, Class elementType) Return the Collection-valued attribute of the managed | |
InterfaceRef jakarta.persistence.criteria.From Inherited from: FetchParent Since: JPA 2.0 Fetch fetch ( String attributeName) Create a fetch join ... - if attribute of the given name does not exist Inherited from: FetchParent Since: JPA 2.0 Fetch fetch ( String ... attribute Inherited from: Path Since: JPA 2.0 Path get ( String attributeName) Create a path | |
ClassRef jakarta.persistence.PersistenceConfiguration Constructors PersistenceConfiguration ( String name) Create a new empty configuration. An empty ... configuration is missing or if the factory could not be created Since: JPA 3.2 String jtaDataSource ... null Since: JPA 3.2 PersistenceConfiguration jtaDataSource ( String dataSourceJndiName) Specify | |
InterfaceRef jakarta.persistence.EntityGraph defined Inherited from: Graph Since: JPA 3.2 AttributeNode addAttributeNode ( String attributeName ... addAttributeNodes ( String ... attributeName) Add one or more attribute nodes to the entity graph ... addElementSubgraph ( String attributeName) Add a node to the graph that corresponds to a collection | |
InterfaceRef jakarta.persistence.Subgraph AttributeNode addAttributeNode ( String attributeName) Get an existing attribute node for the attribute ... Inherited from: Graph Since: JPA 3.2 void addAttributeNodes ( String ... attributeName) Add ... defined Inherited from: Graph Since: JPA 3.2 Subgraph addElementSubgraph ( String attributeName) Add | |
InterfaceRef jakarta.persistence.Graph ( String attributeName) Get an existing attribute node for the attribute with the given name, or ... : IllegalStateException - if this EntityGraph has been statically defined Since: JPA 3.2 void addAttributeNodes ( String ... has been statically defined Since: JPA 3.2 Subgraph addElementSubgraph ( String attributeName) Add a node | |
InterfaceRef jakarta.persistence.criteria.Join Return: the resulting join Inherited from: From Since: JPA 2.0 Join join ( String attributeName ... of the given name does not exist Inherited from: From Since: JPA 2.0 Join join ( String   ... Inherited from: From Since: JPA 2.0 CollectionJoin joinCollection ( String attributeName | |
AnnotationRef jakarta.persistence.TableGenerator id numbers from the generator. Since: JPA 1.0 String catalog default "" (Optional) The catalog ... that stores the last value generated. Since: JPA 1.0 String name default "" (optional) A unique ... . Since: JPA 1.0 String options default "" (Optional) A SQL fragment appended to the generated DDL | |
InterfaceRef jakarta.persistence.StoredProcedureQuery Object getOutputParameterValue ( String parameterName) Retrieve a value passed back from ... .1 Parameter getParameter ( String name) Get the parameter object corresponding to the declared ... getParameter ( String name, Class type) Get the parameter object corresponding to the declared | |
AnnotationRef jakarta.persistence.DiscriminatorColumn; and the discriminator type to DiscriminatorType. STRING . Example: {@snippet : See Also: DiscriminatorValue DiscriminatorType Since: JPA 1.0 Public Annotation Attributes String columnDefinition default ... .0 DiscriminatorType discriminatorType default STRING (Optional) The type of object/column to use as | |
AnnotationRef jakarta.persistence.NamedNativeQuery are scoped to the persistence unit. A named query may be executed by calling ( String , Class) . In simple ... String name default null The name used to identify the query in calls to EntityManager.createNamedQuery . Since: JPA 1.0 String query default null The native SQL query string . Since: JPA 1.0 Class | |
CriteriaBuilder.replace(x,substring,replacement) - JPA Method; Expression x, String substring, String replacement ) Create an expression replacing every occurrence of a substring within a string . Parameters: x - string expression substring - the literal substring to replace replacement - the replacement string | |
CriteriaBuilder.locate(x,pattern,from) - JPA Method; Expression x, String pattern, int from ) Create expression to locate the position of one string within another, returning position of first character if found. The first position in a string is denoted by 1. If the string to be located is not found, 0 | |
CriteriaBuilder.locate(x,pattern) - JPA Method; Expression x, String pattern ) Create expression to locate the position of one string within another, returning position of first character if found. The first position in a string is denoted by 1. If the string to be located is not found, 0 is returned. Warning: the order | |
AnnotationRef jakarta.persistence.JoinColumn to the column. These are only used if table generation is in effect. Since: JPA 3.2 String columnDefinition ... . Defaults to the generated SQL for the column. Since: JPA 1.0 String comment default "" (Optional) A comment ... generated by the persistence provider. Since: JPA 1.0 String name default "" (Optional) The name | |
AnnotationRef jakarta.persistence.NamedQuery. A named query may be executed by calling ( String , Class) . The following is an example ... and the persistence context joined to the transaction. Since: JPA 2.0 String name default null (Required ... String query default null (Required) The query string in the Jakarta Persistence query language | |
AnnotationRef jakarta.persistence.JoinTable Public Annotation Attributes String catalog default "" (Optional) The catalog of the table. Defaults ... .2 String comment default "" (Optional) A comment to be applied to the table. This is only used ... .0 String name default "" (Optional) The name of the join table. Defaults to the concatenated names | |
AnnotationRef jakarta.persistence.MapKeyJoinColumn: {@snippet : See Also: ForeignKey Since: JPA 2.0 Public Annotation Attributes String columnDefinition ... provider. Since: JPA 2.0 String name default "" (Optional) The name of the foreign key column ... default false (Optional) Whether the foreign key column is nullable. Since: JPA 2.0 String options | |
AnnotationRef jakarta.persistence.Table apply. Example: {@snippet : Since: JPA 1.0 Public Annotation Attributes String catalog default ... if table generation is in effect. Since: JPA 3.2 String comment default "" (Optional) A comment ... is created automatically. Since: JPA 2.1 String name default "" (Optional) The name of the table | |
Step 4: Add a Servlet Class a new guest: String name = request.getParameter("name"); if (name != null) guestDao.persist(new | |
Step 4: Add a Servlet Class = emf.createEntityManager(); try { // Handle a new guest (if any): String name = request |