Uses of Interface
org.eclipse.equinox.p2.metadata.expression.IExpression

Packages that use IExpression

Package	Description
org.eclipse.equinox.p2.metadata.expression	Provides a simple expression language used to represent requirements and filters in the metadada
org.eclipse.equinox.p2.metadata.index	Provides classes for metadata query indexing
org.eclipse.equinox.p2.query	Provides common classes for the query mechanism.

Uses of IExpression in org.eclipse.equinox.p2.metadata.expression

Subinterfaces of IExpression in org.eclipse.equinox.p2.metadata.expression

Modifier and Type	Interface	Description
interface	IContextExpression<T>	This is an expression that will need access to the global variable everything.
interface	IFilterExpression	An interface that combines the IExpression with the LDAP filter.
interface	IMatchExpression<T>	A match expression is a boolean expression matching a candidate of a specific type.

Fields in org.eclipse.equinox.p2.metadata.expression declared as IExpression

Modifier and Type	Field	Description
static final IExpression	ExpressionUtil.FALSE_EXPRESSION
static final IExpression[]	IExpressionFactory.NO_ARGS
static final IExpression	ExpressionUtil.TRUE_EXPRESSION

Methods in org.eclipse.equinox.p2.metadata.expression that return IExpression

Modifier and Type	Method	Description
IExpression	IExpressionFactory.all(IExpression collection, IExpression lambda)	Create a collection filter that yields true if the lambda yields true for all of the elements of the collection
IExpression	IExpressionFactory.and(IExpression... operands)	Create a logical and of its operands.
IExpression	IExpressionFactory.array(IExpression... elements)	Create an array of elements.
IExpression	IExpressionFactory.assignment(IExpression variable, IExpression expression)	Creates an expression that represents a variable assignment
IExpression	IExpressionFactory.at(IExpression target, IExpression key)	Create an lookup of key in the target.
IExpression	IExpressionFactory.collect(IExpression collection, IExpression lambda)	Create an expression that collects the result of evaluating each element in a new collection.
IExpression	IExpressionFactory.condition(IExpression test, IExpression ifTrue, IExpression ifFalse)	Create an expression that first evaluates a test and then, depending on the outcome, evaluates either ifTrue or ifFalse.
IExpression	IExpressionFactory.constant(Object value)	Creates an expression that evaluates to the constant value.
IExpression	IExpressionFactory.equals(IExpression lhs, IExpression rhs)	Create an expression that tests if lhs is equal to rhs.
IExpression	IExpressionFactory.exists(IExpression collection, IExpression lambda)	Create a collection filter that yields true if the lambda yields true for at least one of the elements of the collection
IExpression	IExpressionFactory.first(IExpression collection, IExpression lambda)	Create an expression that yields the first element of the collection for which the lambda yields true.
IExpression	IExpressionFactory.flatten(IExpression collection)	Intended to be applied on collections of collections.
IExpression	IExpressionFactory.function(Object function, IExpression... args)	Given one of the values in the map returned by IExpressionFactory.getFunctionMap(), this method returns a function expression.
static IExpression	ExpressionUtil.getLHS(IExpression expression)	Obtains the Left Hand Side (LHS) of a binary expression.
static IExpression	ExpressionUtil.getOperand(IExpression expression)	Obtains the operand of an unary expression
static IExpression[]	ExpressionUtil.getOperands(IExpression expression)	Obtains the operands of an n-ary expression
static IExpression	ExpressionUtil.getRHS(IExpression expression)	Obtains the Right Hand Side (RHS) of a binary expression.
IExpression	IExpressionFactory.greater(IExpression lhs, IExpression rhs)	Create an expression that tests if lhs is greater than rhs.
IExpression	IExpressionFactory.greaterEqual(IExpression lhs, IExpression rhs)	Create an expression that tests if lhs is greater than or equal to rhs.
IExpression	IExpressionFactory.indexedParameter(int index)	Creates an indexed parameter expression
IExpression	IExpressionFactory.intersect(IExpression c1, IExpression c2)	Create an intersection of c1 and c2
IExpression	IExpressionFactory.lambda(IExpression variable, IExpression body)	Creates a lambda expression that takes exactly one variable.
IExpression	IExpressionFactory.lambda(IExpression variable, IExpression[] initialAssignments, IExpression body)	Creates a lambda expression that takes more then one variable (currying).
IExpression	IExpressionFactory.latest(IExpression collection)	Create an expression that yields a new collection consisting of the latest version of the elements of the collection.
IExpression	IExpressionFactory.less(IExpression lhs, IExpression rhs)	Create an expression that tests if lhs is less than rhs.
IExpression	IExpressionFactory.lessEqual(IExpression lhs, IExpression rhs)	Create an expression that tests if lhs is less than or equal to rhs.
IExpression	IExpressionFactory.limit(IExpression collection, int count)	Create an expression that yields a new collection consisting of the count first elements of the source collection.
IExpression	IExpressionFactory.limit(IExpression collection, IExpression limit)	Create an expression that yields a new collection consisting of the n first elements of the source collection where n is determined by limit.
IExpression	IExpressionFactory.matches(IExpression lhs, IExpression rhs)	Create an expression that tests if lhs matches rhs.
IExpression	IExpressionFactory.member(IExpression target, String name)	Creates a member accessor expression.
IExpression	IExpressionFactory.memberCall(IExpression target, String name, IExpression... args)	Creates a member call expression.
IExpression	IExpressionFactory.normalize(List<? extends IExpression> operands, int expressionType)	Performs boolean normalization on the expression to create a canonical form.
IExpression	IExpressionFactory.not(IExpression operand)	Creates an expression that negates the result of evaluating its operand.
IExpression	IExpressionFactory.or(IExpression... operands)	Create a logical or of its operands.
static IExpression	ExpressionUtil.parse(String expression)	Create a new expression.
IExpression	IExpressionParser.parse(String exprString)	Create a new expression.
static IExpression	ExpressionUtil.parseQuery(String expression)	Create an arbitrary expression.
IExpression	IExpressionParser.parseQuery(String exprString)	Create an arbitrary expression.
IExpression	IExpressionFactory.pipe(IExpression... expressions)	Create a pipe of expressions.
IExpression	IExpressionFactory.select(IExpression collection, IExpression lambda)	Create an expression that yields a new collection consisting of all elements of the collection for which the lambda yields true.
IExpression	IExpressionFactory.thisVariable()	Returns the variable that represents this in an expression
IExpression	IExpressionFactory.toExpression(IQuery<?> query)	Wrap an IQuery as an expression.
IExpression	IExpressionFactory.traverse(IExpression collection, IExpression lambda)	Recursively traverse and collect elements based on a condition
IExpression	IExpressionFactory.union(IExpression c1, IExpression c2)	Create a union of c1 and c2
IExpression	IExpressionFactory.unique(IExpression collection, IExpression cache)	Create an expression that yields a new collection where each element is unique.
IExpression	IExpressionFactory.variable(String name)	Creates an expression that represents a variable

Methods in org.eclipse.equinox.p2.metadata.expression with parameters of type IExpression

Modifier and Type	Method	Description
IExpression	IExpressionFactory.all(IExpression collection, IExpression lambda)	Create a collection filter that yields true if the lambda yields true for all of the elements of the collection
IExpression	IExpressionFactory.and(IExpression... operands)	Create a logical and of its operands.
IExpression	IExpressionFactory.array(IExpression... elements)	Create an array of elements.
IExpression	IExpressionFactory.assignment(IExpression variable, IExpression expression)	Creates an expression that represents a variable assignment
IExpression	IExpressionFactory.at(IExpression target, IExpression key)	Create an lookup of key in the target.
IExpression	IExpressionFactory.collect(IExpression collection, IExpression lambda)	Create an expression that collects the result of evaluating each element in a new collection.
IExpression	IExpressionFactory.condition(IExpression test, IExpression ifTrue, IExpression ifFalse)	Create an expression that first evaluates a test and then, depending on the outcome, evaluates either ifTrue or ifFalse.
<T> IContextExpression<T>	IExpressionFactory.contextExpression(IExpression expr, Object... parameters)	Creates a top level expression that represents a full query.
IEvaluationContext	IExpressionFactory.createContext(IExpression[] variables, Object... params)	Create an evaluation context with one single variable
IExpression	IExpressionFactory.equals(IExpression lhs, IExpression rhs)	Create an expression that tests if lhs is equal to rhs.
IExpression	IExpressionFactory.exists(IExpression collection, IExpression lambda)	Create a collection filter that yields true if the lambda yields true for at least one of the elements of the collection
IFilterExpression	IExpressionFactory.filterExpression(IExpression expression)	Creates a top level expression suitable for predicate matching
IExpression	IExpressionFactory.first(IExpression collection, IExpression lambda)	Create an expression that yields the first element of the collection for which the lambda yields true.
IExpression	IExpressionFactory.flatten(IExpression collection)	Intended to be applied on collections of collections.
IExpression	IExpressionFactory.function(Object function, IExpression... args)	Given one of the values in the map returned by IExpressionFactory.getFunctionMap(), this method returns a function expression.
static IExpression	ExpressionUtil.getLHS(IExpression expression)	Obtains the Left Hand Side (LHS) of a binary expression.
static String	ExpressionUtil.getName(IExpression expression)	Obtains the name of a variable or member expression.
static IExpression	ExpressionUtil.getOperand(IExpression expression)	Obtains the operand of an unary expression
static IExpression[]	ExpressionUtil.getOperands(IExpression expression)	Obtains the operands of an n-ary expression
static IExpression	ExpressionUtil.getRHS(IExpression expression)	Obtains the Right Hand Side (RHS) of a binary expression.
static Object	ExpressionUtil.getValue(IExpression expression)	Obtains the value of a literal expression
Object	IEvaluationContext.getValue(IExpression variable)	Retrieve the value of the given variable from this context
IExpression	IExpressionFactory.greater(IExpression lhs, IExpression rhs)	Create an expression that tests if lhs is greater than rhs.
IExpression	IExpressionFactory.greaterEqual(IExpression lhs, IExpression rhs)	Create an expression that tests if lhs is greater than or equal to rhs.
IExpression	IExpressionFactory.intersect(IExpression c1, IExpression c2)	Create an intersection of c1 and c2
IExpression	IExpressionFactory.lambda(IExpression variable, IExpression body)	Creates a lambda expression that takes exactly one variable.
IExpression	IExpressionFactory.lambda(IExpression variable, IExpression[] initialAssignments, IExpression body)	Creates a lambda expression that takes more then one variable (currying).
IExpression	IExpressionFactory.latest(IExpression collection)	Create an expression that yields a new collection consisting of the latest version of the elements of the collection.
IExpression	IExpressionFactory.less(IExpression lhs, IExpression rhs)	Create an expression that tests if lhs is less than rhs.
IExpression	IExpressionFactory.lessEqual(IExpression lhs, IExpression rhs)	Create an expression that tests if lhs is less than or equal to rhs.
IExpression	IExpressionFactory.limit(IExpression collection, int count)	Create an expression that yields a new collection consisting of the count first elements of the source collection.
IExpression	IExpressionFactory.limit(IExpression collection, IExpression limit)	Create an expression that yields a new collection consisting of the n first elements of the source collection where n is determined by limit.
IExpression	IExpressionFactory.matches(IExpression lhs, IExpression rhs)	Create an expression that tests if lhs matches rhs.
<T> IMatchExpression<T>	IExpressionFactory.matchExpression(IExpression expression, Object... parameters)	Creates a parameterized top level expression suitable for predicate matching
IExpression	IExpressionFactory.member(IExpression target, String name)	Creates a member accessor expression.
IExpression	IExpressionFactory.memberCall(IExpression target, String name, IExpression... args)	Creates a member call expression.
IExpression	IExpressionFactory.not(IExpression operand)	Creates an expression that negates the result of evaluating its operand.
IExpression	IExpressionFactory.or(IExpression... operands)	Create a logical or of its operands.
IExpression	IExpressionFactory.pipe(IExpression... expressions)	Create a pipe of expressions.
IExpression	IExpressionFactory.select(IExpression collection, IExpression lambda)	Create an expression that yields a new collection consisting of all elements of the collection for which the lambda yields true.
void	IEvaluationContext.setValue(IExpression variable, Object value)	Set the current value for the given variable to value
IExpression	IExpressionFactory.traverse(IExpression collection, IExpression lambda)	Recursively traverse and collect elements based on a condition
IExpression	IExpressionFactory.union(IExpression c1, IExpression c2)	Create a union of c1 and c2
IExpression	IExpressionFactory.unique(IExpression collection, IExpression cache)	Create an expression that yields a new collection where each element is unique.
boolean	IExpressionVisitor.visit(IExpression expression)	The method that will be called for each expression that is visited.

Method parameters in org.eclipse.equinox.p2.metadata.expression with type arguments of type IExpression

Modifier and Type	Method	Description
IExpression	IExpressionFactory.normalize(List<? extends IExpression> operands, int expressionType)	Performs boolean normalization on the expression to create a canonical form.

Uses of IExpression in org.eclipse.equinox.p2.metadata.index

Methods in org.eclipse.equinox.p2.metadata.index with parameters of type IExpression

Modifier and Type	Method	Description
Iterator<T>	IIndex.getCandidates(IEvaluationContext ctx, IExpression variable, IExpression booleanExpr)	Obtains the elements that are candidates for the given booleanExpr when applied using the given variable as this.

Uses of IExpression in org.eclipse.equinox.p2.query

Methods in org.eclipse.equinox.p2.query that return IExpression

Modifier and Type	Method	Description
IExpression	IQuery.getExpression()	Returns the IExpression backing this query or null if this is not an expression query.
IExpression	MatchQuery.getExpression()	Deprecated.

Methods in org.eclipse.equinox.p2.query with parameters of type IExpression

Modifier and Type	Method	Description
static <T> IQuery<T>	QueryUtil.createMatchQuery(Class<? extends T> matchingClass, IExpression matchExpression, Object... parameters)	Creates an query that will iterate over all candidates and discriminate all candidates that are not instances of matchingClass or for which the boolean matchExpression returns false.
static IQuery<IInstallableUnit>	QueryUtil.createMatchQuery(IExpression matchExpression, Object... parameters)	Creates an IInstallableUnit query that will iterate over all candidates and discriminate by applying the boolean matchExpression on each candidate.
static <T> IQuery<T>	QueryUtil.createQuery(Class<? extends T> matchingClass, IExpression expression, Object... parameters)	Creates a query that will limit the result to instances of the matchingClass.
static IQuery<IInstallableUnit>	QueryUtil.createQuery(IExpression expression, Object... parameters)	Creates an IInstallableUnit query based on an expression that uses all candidates as input.

Constructors in org.eclipse.equinox.p2.query with parameters of type IExpression

Modifier	Constructor	Description
	ExpressionMatchQuery(Class<? extends T> matchingClass, IExpression expression, Object... parameters)
	ExpressionQuery(Class<? extends T> elementClass, IExpression expression, Object... parameters)