22 | Paths and Types in JPQL and Criteria API through a NULL value The following query retrieves country names with their capital city names: SELECT ... , string, date). Simple type values are more useful in queries. They have special operators ... .capital.name is a nested path expression that continues from the Capital entity object to its name |
21 | ObjectDB Object Database Features Dynamic query definition, including using JPA Criteria Query API. Static definition (named queries ... attributes, grouping queries and aggregate queries) which are usually missing from Object Oriented ... cache (per EntityManagerFactory). Database file page cache. Query program cache (for repeating |
20 | javax.persistence.TypedQuery of the given name. This method is not required to be supported for native queries. Parameters: name ... of the specified name does not exist IllegalStateException - if invoked on a native query ... is required to be supported for criteria queries only. Parameters: name - parameter name type - type |
19 | Index DefinitionQuerying without indexes requires iteration over entity objects in the database one by ... the iteration can be avoided and complex queries over millions of objects can be executed quickly ... indexedField1; @Index(unique="true") int indexedField2; // unique @Index(name="i3") int |
2 | declareParameters(parameters)Method javax.jdo.Query void declareParameters( String parameters ) Declare the list of parameters query execution. The parameter declaration is a String containing one or more query parameter declarations separated with commas. Each parameter named in the parameter declaration must be bound |
2 | executeWithMap(parameters)Method javax.jdo.Query Object executeWithMap( Map parameters ) Execute the query and return the filtered Collection. The query is executed with the parameters set by the Map values. Each Map entry consists of a key which is the name of the parameter in the declareParameters method, and a value |
2 | [ODB1] Chapter 9 - ObjectDB Explorer to browse databases, execute JDOQL queries, create new databases and edit the content of existing ... database objects visually, navigate among them and execute queries is very valuable during development ... contains (root objects are discussed in chapter 6). The "Query" window enables a user to execute JDOQL |
2 | Query.fetchPlanAnnotation Element javax.jdo.annotations.Query String fetchPlan The name of the fetch plan used by this query Returns: the fetch plan Default value: "" Since: JDO 2.1 |
2 | declareImports(imports)Method javax.jdo.Query void declareImports( String imports ) Set the import statements to be used to identify the fully qualified name of variables or parameters. Parameters and unbound variables might come from a different class from the candidate class, and the names need to be declared in |
2 | setOrdering(ordering)Method javax.jdo.Query void setOrdering( String ordering ) Set the ordering specification for the result Collection. The ordering specification is a String containing one or more ordering declarations separated by commas. Each ordering declaration is the name of the field on which to order |
