Uses of Interface
org.apache.qpid.server.query.engine.parsing.expression.Expression

Packages that use Expression

Package	Description
org.apache.qpid.server.query.engine.evaluator
org.apache.qpid.server.query.engine.parsing
org.apache.qpid.server.query.engine.parsing.expression
org.apache.qpid.server.query.engine.parsing.expression.accessor
org.apache.qpid.server.query.engine.parsing.expression.arithmetic
org.apache.qpid.server.query.engine.parsing.expression.comparison
org.apache.qpid.server.query.engine.parsing.expression.conditional
org.apache.qpid.server.query.engine.parsing.expression.function
org.apache.qpid.server.query.engine.parsing.expression.function.aggregation
org.apache.qpid.server.query.engine.parsing.expression.function.datetime
org.apache.qpid.server.query.engine.parsing.expression.function.nulls
org.apache.qpid.server.query.engine.parsing.expression.function.numeric
org.apache.qpid.server.query.engine.parsing.expression.function.string
org.apache.qpid.server.query.engine.parsing.expression.literal
org.apache.qpid.server.query.engine.parsing.expression.logic
org.apache.qpid.server.query.engine.parsing.expression.set
org.apache.qpid.server.query.engine.parsing.factory
org.apache.qpid.server.query.engine.parsing.query

Uses of Expression in org.apache.qpid.server.query.engine.evaluator

Methods in org.apache.qpid.server.query.engine.evaluator that return Expression

Modifier and Type	Method	Description
<T,R> Expression<T,R>	EvaluationContext.getAlias(String alias)
<T,R> Expression<T,R>	EvaluationContext.removeAlias(String alias)

Methods in org.apache.qpid.server.query.engine.evaluator with parameters of type Expression

Modifier and Type	Method	Description
<T,R> void	EvaluationContext.putAlias(String alias, Expression<T,R> expression)

Uses of Expression in org.apache.qpid.server.query.engine.parsing

Methods in org.apache.qpid.server.query.engine.parsing that return Expression

Modifier and Type	Method	Description
Expression<T,R>	ExpressionParser.parseExpression(String sql)

Uses of Expression in org.apache.qpid.server.query.engine.parsing.expression

Subinterfaces of Expression in org.apache.qpid.server.query.engine.parsing.expression

Modifier and Type	Interface	Description
interface	ExpressionNode<T,R>	Node of which expression tree consist of

Classes in org.apache.qpid.server.query.engine.parsing.expression that implement Expression

Modifier and Type	Class	Description
class	AbstractExpressionNode<T,R>	Abstract expression node containing base functionality

Methods in org.apache.qpid.server.query.engine.parsing.expression that return Expression

Modifier and Type	Method	Description
default <V> Expression<T,V>	Expression.andThen(Expression<? super R,? extends V> after)

Methods in org.apache.qpid.server.query.engine.parsing.expression with parameters of type Expression

Modifier and Type	Method	Description
default <V> Expression<T,V>	Expression.andThen(Expression<? super R,? extends V> after)

Uses of Expression in org.apache.qpid.server.query.engine.parsing.expression.accessor

Classes in org.apache.qpid.server.query.engine.parsing.expression.accessor that implement Expression

Modifier and Type	Class	Description
class	ChainedObjectAccessor<T,R>	Chained object accessor retrieves values from expressions having form parent.child.grandchild
class	CollectionObjectAccessor<R>	Collection object accessor retrieves values from a collection
class	ConfiguredObjectAccessorExpression<T extends ConfiguredObject<?>,R>	ConfiguredObject object accessor retrieves values from a broker objects hierarchy
class	DelegatingCollectionAccessorExpression<T,R,INDEX,COLLECTION extends Collection<R>,MAP extends Map<String,R>>	Delegating collection accessor retrieves values either from indexed collections or from maps
class	DelegatingObjectAccessor<T,R>	Delegating object accessor delegates value retrieval to other accessor types
class	MapObjectAccessor<R>	Map object accessor retrieves value from a map
class	ObjectAccessorExpression<T,R>	Object accessor retrieves values from an object

Constructors in org.apache.qpid.server.query.engine.parsing.expression.accessor with parameters of type Expression

Constructor	Description
DelegatingCollectionAccessorExpression(String alias, String property, Expression<T,INDEX> index)	Constructor stores field values

Uses of Expression in org.apache.qpid.server.query.engine.parsing.expression.arithmetic

Classes in org.apache.qpid.server.query.engine.parsing.expression.arithmetic that implement Expression

Modifier and Type	Class	Description
class	AbstractArithmeticExpression<T,R>	Parent for arithmetic expression classes
class	DivideExpression<T,R>	Arithmetic division operation
class	MinusExpression<T,R>	Arithmetic subtraction operation
class	ModExpression<T,R>	Arithmetic mod operation, returns the remainder of a number divided by another number
class	MultiplyExpression<T,R>	Arithmetic multiplication operation
class	PlusExpression<T,R>	Arithmetic addition operation

Uses of Expression in org.apache.qpid.server.query.engine.parsing.expression.comparison

Classes in org.apache.qpid.server.query.engine.parsing.expression.comparison that implement Expression

Modifier and Type	Class	Description
class	AbstractComparisonExpression<T,R>	Parent for comparison expression classes
class	BetweenExpression<T,R>	Comparison BETWEEN operation.
class	EqualExpression<T,R>	Comparison equality operation.
class	GreaterThanExpression<T,R>	Comparison GREATER THAN operation.
class	GreaterThanOrEqualExpression<T,R>	Comparison greater-than-or-equal operation.
class	InExpression<T,R>	Comparison IN operation.
class	IsNullExpression<T>	Comparison IS NULL operation.
class	LessThanExpression<T,R>	Comparison LESS THAN operation.
class	LessThanOrEqualExpression<T,R>	Comparison LESS THAN OR EQUAL operation.
class	LikeExpression<T,R>	Comparison LIKE operation.

Uses of Expression in org.apache.qpid.server.query.engine.parsing.expression.conditional

Classes in org.apache.qpid.server.query.engine.parsing.expression.conditional that implement Expression

Modifier and Type	Class	Description
class	CaseExpression<T,R>	Conditional CASE operation.

Uses of Expression in org.apache.qpid.server.query.engine.parsing.expression.function

Classes in org.apache.qpid.server.query.engine.parsing.expression.function that implement Expression

Modifier and Type	Class	Description
class	AbstractFunctionExpression<T,R>	Parent for function expression classes

Uses of Expression in org.apache.qpid.server.query.engine.parsing.expression.function.aggregation

Classes in org.apache.qpid.server.query.engine.parsing.expression.function.aggregation that implement Expression

Modifier and Type	Class	Description
class	AbstractAggregationExpression<T,R>	Parent for aggregation function classes
class	AvgExpression<T>	The AVG() function returns the average value of a numeric collection.
class	CountExpression<T>	The COUNT() function returns the number of items that matches a specified criterion.
class	MaxExpression<T,R extends Comparable<R>>	The MAX() function returns the maximum value of a collection.
class	MinExpression<T,R>	The MIN() function returns the minimum value of a collection.
class	SumExpression<T>	The SUM() function returns the total sum of a numeric collection.

Methods in org.apache.qpid.server.query.engine.parsing.expression.function.aggregation that return Expression

Modifier and Type	Method	Description
Expression<T,R>	AbstractAggregationExpression.getSource()

Uses of Expression in org.apache.qpid.server.query.engine.parsing.expression.function.datetime

Classes in org.apache.qpid.server.query.engine.parsing.expression.function.datetime that implement Expression

Modifier and Type	Class	Description
class	CurrentTimestampExpression<T>	The CURRENT_TIMESTAMP() function returns current date and time.
class	DateAddExpression<T,R>	The DATEADD() function adds a time/date interval to a date and returns the date.
class	DateDiffExpression<T,R>	The DATEDIFF() function returns the number of time units between two date values.
class	DateExpression<T,R>	The DATE() function extracts the date part from a datetime expression.
class	ExtractExpression<T,R>	The EXTRACT() function extracts a part from a given date.

Uses of Expression in org.apache.qpid.server.query.engine.parsing.expression.function.nulls

Classes in org.apache.qpid.server.query.engine.parsing.expression.function.nulls that implement Expression

Modifier and Type	Class	Description
class	CoalesceExpression<T,R>	The COALESCE() function returns the first non-null value in a list.

Uses of Expression in org.apache.qpid.server.query.engine.parsing.expression.function.numeric

Classes in org.apache.qpid.server.query.engine.parsing.expression.function.numeric that implement Expression

Modifier and Type	Class	Description
class	AbsExpression<T>	ABS returns the absolute value of a number.
class	RoundExpression<T>	ROUND takes a numeric parameter and rounds it to the specified number of decimal places.
class	TruncExpression<T>	TRUNC takes a numeric parameter and truncates it to the specified number of decimal places.

Uses of Expression in org.apache.qpid.server.query.engine.parsing.expression.function.string

Classes in org.apache.qpid.server.query.engine.parsing.expression.function.string that implement Expression

Modifier and Type	Class	Description
class	ConcatExpression<T,R>	CONCAT takes a variable number of arguments and concatenates them into a single string.
class	LeftTrimExpression<T,R>	LTRIM takes a string parameter and removes leading spaces from it.
class	LengthExpression<T,R>	LENGTH takes a string parameter and returns its length.
class	LowerExpression<T,R>	LOWER takes a string parameter and converts it to lower case.
class	PositionExpression<T,R>	POSITION takes a search pattern and a source string as parameters and returns the position of the first occurrence of a pattern in a source string.
class	ReplaceExpression<T,R>	REPLACE takes a source parameter, a pattern parameter and a replacement parameter.
class	RightTrimExpression<T,R>	RTRIM takes a string parameter and removes trailing spaces from it.
class	SubstringExpression<T,R>	SUBSTRING takes a source parameter, a start index parameter and optional length parameter.
class	TrimExpression<T,R>	TRIM takes a string parameter and removes both leading and trailing spaces from it.
class	UpperExpression<T,R>	UPPER takes a string parameter and converts it to upper case.

Uses of Expression in org.apache.qpid.server.query.engine.parsing.expression.literal

Classes in org.apache.qpid.server.query.engine.parsing.expression.literal that implement Expression

Modifier and Type	Class	Description
class	ConstantExpression<T,R>	Holds a constant value.
class	FalseLiteralExpression<T>	Holds a FALSE boolean value.
class	NullLiteralExpression<T,R>	Holds a NULL value.
class	NumberLiteralExpression<T>	Holds a numeric value.
class	StringLiteralExpression<T>	Holds a string value.
class	TrueLiteralExpression<T>	Holds a TRUE boolean value.

Uses of Expression in org.apache.qpid.server.query.engine.parsing.expression.logic

Classes in org.apache.qpid.server.query.engine.parsing.expression.logic that implement Expression

Modifier and Type	Class	Description
class	AndExpression<T>	Logical AND expression.
class	ExpressionWrapperExpression<T>	Wraps predicate into an expression.
class	NotExpression<T,R>	Logical NOT expression.
class	OrExpression<T>	Logical OR expression.
class	PredicateWrapperExpression<T,R>	Wraps an expression into a predicate.

Constructors in org.apache.qpid.server.query.engine.parsing.expression.logic with parameters of type Expression

Constructor	Description
NotExpression(Expression<T,R> source)	Constructor initializes children expression list

Uses of Expression in org.apache.qpid.server.query.engine.parsing.expression.set

Subinterfaces of Expression in org.apache.qpid.server.query.engine.parsing.expression.set

Modifier and Type	Interface	Description
interface	SetExpression<T,R>	Parent of select expression and set operations expressions

Classes in org.apache.qpid.server.query.engine.parsing.expression.set that implement Expression

Modifier and Type	Class	Description
class	AbstractSetExpression<T,R>	Abstract class containing base functionality for set expressions
class	EmptySetExpression<T,R>	Represents an empty set returned by a subquery
class	IntersectExpression<T>	Set INTERSECT expression is used to retain the results of right SELECT statement present in the results of left SELECT statement.
class	MinusExpression<T>	Set MINUS expression is used to remove the results of right SELECT statement from the results of left SELECT statement.
class	UnionExpression<T>	Set UNION expression is used to combine the results of two or more SELECT statements.

Uses of Expression in org.apache.qpid.server.query.engine.parsing.factory

Methods in org.apache.qpid.server.query.engine.parsing.factory that return Expression

Modifier and Type	Method	Description
static <T> Expression<T,Boolean>	LogicExpressionFactory.toFunction(Predicate<T> predicate)	Wraps predicate into an expression

Methods in org.apache.qpid.server.query.engine.parsing.factory that return types with arguments of type Expression

Modifier and Type	Method	Description
static <T,A,R> Function<Expression<T,R>,Collector<T,A,R>>	CollectorFactory.collector(CollectorType collectorType)	Creates collector from collector type

Methods in org.apache.qpid.server.query.engine.parsing.factory with parameters of type Expression

Modifier and Type	Method	Description
static <T,R> ExpressionNode<T,R>	AccessorExpressionFactory.collection(String alias, String property, Expression<T,R> index)	Creates collection accessor
static <T,R> NotExpression<T,R>	LogicExpressionFactory.negate(Expression<T,R> value)	Creates a NotExpression from a source expression

Uses of Expression in org.apache.qpid.server.query.engine.parsing.query

Classes in org.apache.qpid.server.query.engine.parsing.query that implement Expression

Modifier and Type	Class	Description
class	FromExpression<T,R extends Stream<?>,C extends ConfiguredObject<?>>	Contains information about domain queried and retrieves steams of entities from domain.
class	HavingExpression<T,R>	Contains expression for evaluation of having clause predicate
class	ProjectionExpression<T,R>	Contains information about a single item in a SELECT clause
class	QueryExpression<T,R>	Contains information about a query, which contains WITH clause items, select expression, ORDER BY clause items as well as LIMIT and OFFSET clauses.
class	SelectExpression<T,R>	Contains information about a select expression, which may contain SELECT clause, FROM clause, WHERE clause, GROUP BY clause and HAVING clause.

Methods in org.apache.qpid.server.query.engine.parsing.query that return Expression

Modifier and Type	Method	Description
Expression<T,R>	ProjectionExpression.getExpression()	Returns wrapped expression