Package org.apache.openjpa.persistence.query

OpenJPA Dynamic Query

This package provides dynamic query construction that are similar to weakly-typed Criteria API.

Interface Summary

Interface	Description
Aggregate	Type of the result of an aggregate operation
CaseExpression	Interface for the construction of case expressions
DomainObject	Domain objects define the domain over which a query operates.
Expression	Instances of this interface can be used either as select list items or as predicate operands.
FetchJoinObject	Interface used for the result of a fetch join.
OpenJPAQueryBuilder	Builds dynamic query
OrderByItem	Instances of this interface can be used as orderBy arguments.
PathExpression	Interface for operations over objects reached via paths
Predicate	Interface used to define compound predicates.
PredicateOperand	Interface for constructing where-clause and having-clause conditions.
QueryBuilder	Factory interface for query definition objects
QueryDefinition	Interface for construction of query definitions
SelectItem	SelectItem instances are used in specifying the query's select list.
Subquery	Instances of this interface can be used as subqueries.
Visitable	An element of query that is convertible to a JPQL String given a aliasing scheme.

Class Summary

Class	Description
AbsExpression	Denotes ABS() operation on a given expression.
AbstractDomainObject	Domain Object is a path expression over which query is evaluated.
AndPredicate	Denotes (e1 AND e2) predicate.
ArrayExpression	A single expression that holds an array of values.
AverageExpression	Denotes AVG() on a given Expression.
BetweenExpression	Denotes e1 BETWEEN(e2 AND e3) Expression.
BinaryOperatorExpression	An expression resulting from a binary operation on two expressions.
CaseExpressionImpl
ConcatExpression	Denotes CONCAT(e1,e2,..)
CountExpression	Denotes COUNT(e) Expression.
CurrentTimeExpression	Denotes CURRENT_TIME(), CURRENT_DATE() and CURRENT_TIMESTAMP() expressions.
DistinctExpression	Denotes DISTINCT(e) Expression.
DividedByExpression	Denotes e1/e2 Expression.
ElseExpression	Else clause in a Case Statement.
EntryExpression	Denotes ENTRY(e) on a path.
EqualExpression	Denotes e1 = e2 Expression.
ExistsExpression	Denotes EXISTS(SubQuery) Expression.
FetchPath	Denotes a path used in fetch join.
GreaterEqualExpression	Denotes e1 >= e2 Expression.
GreaterThanExpression	Denotes e1 > e2 Expression.
IndexExpression	Denotes INDEX(e) Expression.
InExpression	Denotes e1 IN (e2) Expression.
IsEmptyExpression
IsNullExpression	Denotes e IS NULL Expression.
JoinPath	Path resulting by joining from a parent path via an attribute.
JPQLHelper	Utility for converting elements to JPQL string fragments.
KeyExpression	Denotes KEY(e) Expression.
LengthExpression	Denotes LENGTH(e) Expression.
LessEqualExpression	Denotes e1 <= e2 Expression.
LessThanExpression	Denotes e1 < e2 Expression.
LikeExpression	Denotes e1 LIKE e2 Expression.
LiteralExpression	Denotes a Literal Expression.
LocateExpression	Denotes LOCATE(e1, e2, n) Expression.
LogicalPredicate	Logical Predicate combines two predicates with a logical operator.
LowerExpression	Denotes LOWER(e) Expression.
MaxExpression	Denotes MAX(e) Expression.
MemberOfExpression	Denotes e1 MEMBER OF e2 Expression.
MinExpression	Denotes MIN(e) Expression.
MinusExpression	Denotes (e1 - e2) Expression.
NewInstance	Denotes NEW fully.qualified.class.name(arg1, arg2,...)
NotEqualExpression	Denotes (e1 !
OperatorPath	A path resulting from KEY() or VALUE() operation on an existing path.
OrderableItem	Denotes an item of ORDER BY clause.
OrPredicate	Denotes (e1 OR e2) predicate.
ParameterExpression	Denotes a parameter in a query.
PlusExpression	Denotes (e1 + e2) Expression.
QueryBuilderImpl	The factory for QueryDefinition.
QueryDefinitionImpl	Implements QueryDefinition.
RangeExpression	Denotes a range used by e1 BETWEEN x AND y operation.
RootPath	Denotes root domain instance representing a persistent type.
SizeExpression	Denotes SIZE(e) Expression.
SquareRootExpression	Denotes SQRT(e) Expression.
SubStringExpression	Denotes SUBSTR(a,i1,i2) Expression.
SumExpression	Denotes SUM(e) Expression.
TimesExpression	Denotes (e1*e2) Expression.
TrimExpression	Denotes TRIM(e1,x) Expression.
TypeExpression	Denotes TYPE(e) Expression.
UnaryMinusExpression	Denotes (-e) Expression.
UpperExpression	Denotes UPPER(e) Expression.
ValueExpression	Denotes VALUE(e) Expression.
VarArgsExpression	A expression that holds an array of Expressions.
WhenClause	Denotes WHEN ...

Enum Summary

Enum	Description
BinaryConditionalOperator	Enumeration of conditional operator that operates on ordered pair of expression to generate a predicate.
BinaryFunctionalOperator	Enumeration of functional operator that operates on ordered pair of expression to generate another expression.
ConditionalOperator	Enumerates conditional operator that operates on two predicates to generate another predicate.
PathOperator	Operator that combines two components to form a path.
TrimSpec	Used to specify the trimming of strings
UnaryConditionalOperator	Enumeration of operator that operates on a single expression to generate a predicate.
UnaryFunctionalOperator	Enumeration of operator that operates on a single expression to generate another expression.
UnaryOperator	Enumeration of Operator that operate on a single expression.

Annotation Types Summary

Annotation Type	Description
OrderBy