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Literals in JPQL, as in Java, represent constant values. JPQL supports various types of literals including NULL , boolean literals ( TRUE and FALSE ), numeric literals (e.g. 100 ), string literals (e.g. 'abc' ), enum literals (e.g. mypackage.MyEnum.MY_VALUE ) and entity type literals (e.g. Country

String values may appear in JPQL queries in various forms: as  string literals - e.g. 'abc ... (usually a parameter or literal ). For example: c.name LIKE '_r%' is TRUE for 'Brazil' and FALSE ... . locate (path, param, cb. literal (2)); Expression l4 = cb. locate (path, "x", 2); // LOWER(str) and UPPER

. See the Parameters in Criteria Queries section for more details. Parameters vs. Literals Following ... a parameter for the queried name, the new method embeds the name as a String literal . There are a few drawbacks to using literals rather than parameters in queries. First of all, the query is not reusable

JPA Method in javax.persistence.criteria.CriteriaBuilder Expression literal (   T value ) Create an expression for a literal . Parameters: value - value represented by the expression Return: expression literal Throws: IllegalArgumentException - if value is null Since: JPA 2.0

/ Criteria Variables JPQL / Criteria Parameters JPQL / Criteria Literals Every query expression consists ... expressions are provided as follows: Literals and Dates  ( literal , nullLiteral , currentDate

Numeric values may appear in JPQL queries in many forms: as  numeric literals - e.g. 123 ... ); // -expression Expression sqrt = cb. sqrt (cb. literal (100)); // SQRT(expression) As shown above, a number can always be converted to a numeric expression by using the literal method.

the database. The Country literal represents the Country entity class. The TYPE operator returns ... ; Country . Predicate p = cb. notEqual (e. type (), cb. literal (Country.class)); In the above example ... a join) and the entity type  Country ( a criteria literal ).

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 ... : Expression ts = cb. currentTimestamp (); // both Unlike constant date literals which are built

expressions are provided in the following page sections: Literals and Dates  ( literal

, string literals are also case sensitive (e.g. "ORM" and "orm" are different values). A Minimal JPQL

rather than embedding literals dynamically into the query string and results in more efficient queries. @NamedQuery

that are discussed later in this chapter. Literals All types of Java literals are supported by JDOQL, as demonstrated by the following table:   Literal Type Samples of valid literals in JDOQL int 2003, -127 ... the next section ( section 7.3 ), parameters could be used instead of constant literals to make queries

.get("eintritt"), builder. literal (myDate)); Doing exactly the same on the same DB in the DB Explorer ... literal with a date parameter. support Support After further investigation of this issue, it seems that criteria queries work well with literal dates, including in version 2.4.5. The following test case

literal (T value) Create an expression for a literal . Parameters: value - value represented by the expression Return: expression literal Throws: IllegalArgumentException - if value is null ... ;resultClass) Create an expression for a null literal with the given type. Parameters: resultClass - type

.equal(e.type(), cb. literal (Country.class)); results in the error: Caused by: com.objectdb.o ... . literal (A.class)));         System.out.println("Query: " + cq);   ... static class B {     } } There is still a problem with parsing class literals in query

the primary key is used as a literal , which means that the query has to be compiled every time and the query program cache cannot be used. Maybe ObjectDB should optimize such queries replacing literals ... . So ObjectDB would indeed cache this query the way it is? Please ignore my original post - the literals

JPA Method in javax.persistence.criteria.CriteriaBuilder Expression nullLiteral (   Class  resultClass ) Create an expression for a null literal with the given type. Parameters: resultClass - type of the null literal Return: null expression literal Since: JPA 2.0

=ERGOKeyword [id=56, preferedName==], value=TimePoint [ literal =01-01-2000]]     On update ... [comparator=ERGOKeyword [id=56, preferedName==], value=TimePoint [ literal =01-01-2000]] SingleValueConstraint [comparator=ERGOKeyword [id=56, preferedName==], value=TimePoint [ literal =10-10-1900

Test 6 fails because in comparison of Object ( Attribute.getValue() ) with char literal ('5') ObjectDB considers the literal as character rather than as a string. Only in comparison of a string ... of a literal . Test 7 fails because the query is executed using an index and the transient value

literal {t c.start} or erros caused by bad operand ---After Edit: I was too accurate when tried ... is for literals , so it cannot contain variables or parameters. In comparison the operand types must match. Not

(the creationDate field) with a string literal ("07-25-2013"). Replace the string with a date literal or a parameter . support Support

JPA Annotation Attribute in javax.persistence.Entity String name default "" (Optional) The entity name. Defaults to the unqualified name of the entity class. This name is used to refer to the entity in queries. The name must not be a reserved literal in the Java Persistence query language. Since: JPA 1.0

to the entity in queries. The name must not be a reserved literal in the Java Persistence query language. Since: JPA 1.0

Possible issue for JPQL IN expression with a set of more than one string literals values in the path expression. Error: Exception in thread "main" [ObjectDB 2.3.7_10] SELECT e FROM MyEntity e WHERE e.country IN ('US' == ,

with dates in the Explorer by using date literals . For example: SELECT o FROM TestObject o WHERE o.date {d

The maven plugin example here is incomplete:  https://www.objectdb.com/java/jpa/tool/enhancer#Maven_and_ANT_Enhancement_ Taken literally it can't work because it's missing this:                             org.codehaus.mojo

);   Expression period = root.get(Counter_.Period);   Expression delayPeriod = cb. literal

Hi, what is the correct syntax for IN operator when list of literals ia used instead of parameter, e.g. SELECT FROM Info i WHERE i.status IN (1,4) ? (Suppose status is int.) I always get this exception: SELECT FROM Info i WHERE i.status IN (1 == ,

" is considered as a string literal value rather than as a navigation expression), and because this constant

We are getting massively different results on field loading between explicit post-compile enhancement and automatic run-time enhancement. Testing exactly where and when the results are different for our demo web app is a very time consuming task, and very difficult, it means testing literally 100s

that converts literals to implicit parameters (to improve performance and to make using entity objects

type operator and literals in client server queries ( issue #605 ). Fixed eager fetch issues. Fixed a bug in using type literals in queries. Fixed a bug in passing a new entity object with no id as

. literal (e.getJavaType())));         System.out.println("Query

instead of a PK in find (retrieval by example). Added support of using list of literals in an query IN

'. A workaround for previous versions is to use a date literal (embedded in the query) instead of a date parameter. support Support

it against an existing database? In this case the app is starting against a clean database ( literally a new

. Fixed a bug in not using LIKE's ESCAPE when an index is used. Fixed a bug in parsing time literals in