13 | Optimization of Map Queries introducing a variable using JOIN that is bound to the expression could help (at least the method ... optimization.. (though I guess, in object oriented models, usage of map is something pretty regular..) Alex quasado Alexander Adam Binding a variable to a complex expression is an ObjectDB extension |
2 | locate(x, pattern, from)Method javax.persistence.criteria.CriteriaBuilder Expression<T> locate( Expression<T> x, Expression<T> pattern, Expression<T> from ) Create expression to locate the position of one string ... . If the string to be located is not found, 0 is returned. Parameters: x - expression for string |
2 | locate(x, pattern, from)Method javax.persistence.criteria.CriteriaBuilder Expression<Integer> locate( Expression<String> x, Expression<String> pattern, Expression<Integer> from ) Create expression to locate the position ... - expression for string to be searched pattern - expression for string to be located from - expression |
2 | substring(x, from, len)Method javax.persistence.criteria.CriteriaBuilder Expression<String> substring( Expression<String> x, Expression<Integer> from, Expression<Integer> len ) Create an expression for substring extraction ... . Parameters: x - string expression from - start position expression len - length expression Returns |
2 | nullif(x, y)Method javax.persistence.criteria.CriteriaBuilder Expression<Y> nullif( Expression<Y> x, Expression<?> y ) Create an expression that tests whether its argument are equal, returning null if they are and the value of the first expression if they are not. Parameters: x - expression y - expression Returns: nullif expression Since: JPA 2.0 |
2 | nullif(x, y)Method javax.persistence.criteria.CriteriaBuilder Expression<T> nullif( Expression<T> x, Expression<T> y ) Create an expression that tests whether its argument are equal, returning null if they are and the value of the first expression if they are not. Parameters: x - expression y - expression Returns: nullif expression Since: JPA 2.0 |
2 | coalesce() expression. Returns: coalesce expression Since: JPA 2.0 Selection<X> alias(String name) Assigns an alias ... a predicate to test whether the expression is not null. Create a predicate to test whether the expression is not null. Returns: predicate testing whether the expression is not null Since: JPA 2.0 Predicate |
2 | trim(ts, t, x)Method javax.persistence.criteria.CriteriaBuilder Expression<String> trim( Trimspec ts, Expression<Character> t, Expression<String> x ) Create expression to trim character from a string. Parameters: ts - trim specification t - expression for character to be trimmed x - expression for string to trim Returns: trim expression Since: JPA 2.0 |
2 | trim(t, x)Method javax.persistence.criteria.CriteriaBuilder Expression<String> trim( Expression<Character> t, Expression<String> x ) Create expression to trim character from both ends of a string. Parameters: t - expression for character to be trimmed x - expression for string to trim Returns: trim expression Since: JPA 2.0 |
0 | setFilter(filter) specification is a String containing a Boolean expression that is to be evaluated for each ... of the Query; and for all variables there exists a value for which the filter expression evaluates to true. The user may denote uniqueness in the filter expression by explicitly declaring an expression |
