Uses of Class
org.apache.commons.jxpath.ri.compiler.Expression

Packages that use Expression

Package	Description
org.apache.commons.jxpath.ri	Reference implementation of JXPath.
org.apache.commons.jxpath.ri.axes	Implementations of EvalContext used for different XPath axes (child::, parent:: etc).
org.apache.commons.jxpath.ri.compiler	XPath parse tree.

Uses of Expression in org.apache.commons.jxpath.ri

Fields in org.apache.commons.jxpath.ri declared as Expression

Modifier and Type	Field	Description
private Expression	JXPathCompiledExpression.expression

Methods in org.apache.commons.jxpath.ri that return Expression

Modifier and Type	Method	Description
private Expression	JXPathContextReferenceImpl.compileExpression(java.lang.String xpath)	Compile the given expression.
protected Expression	JXPathCompiledExpression.getExpression()	Get the compiled expression.

Methods in org.apache.commons.jxpath.ri with parameters of type Expression

Modifier and Type	Method	Description
private void	JXPathContextReferenceImpl.checkSimplePath(Expression expr)	Checks if the path follows the JXPath restrictions on the type of path that can be passed to create...
Pointer	JXPathContextReferenceImpl.createPath(java.lang.String xpath, Expression expr)	Create the given path.
Pointer	JXPathContextReferenceImpl.createPathAndSetValue(java.lang.String xpath, Expression expr, java.lang.Object value)	Create the given path setting its value to value.
Pointer	JXPathContextReferenceImpl.getPointer(java.lang.String xpath, Expression expr)	Get a pointer to the specified path/expression.
java.lang.Object	JXPathContextReferenceImpl.getValue(java.lang.String xpath, Expression expr)	Get the value indicated.
java.lang.Object	JXPathContextReferenceImpl.getValue(java.lang.String xpath, Expression expr, java.lang.Class requiredType)	Get the value indicated.
java.util.Iterator	JXPathContextReferenceImpl.iterate(java.lang.String xpath, Expression expr)	Traverses the xpath and returns a Iterator of all results found for the path.
java.util.Iterator	JXPathContextReferenceImpl.iteratePointers(java.lang.String xpath, Expression expr)	Traverses the xpath and returns an Iterator of Pointers.
void	JXPathContextReferenceImpl.removeAll(java.lang.String xpath, Expression expr)	Remove all matching nodes.
void	JXPathContextReferenceImpl.removePath(java.lang.String xpath, Expression expr)	Remove the specified path.
void	JXPathContextReferenceImpl.setValue(java.lang.String xpath, Expression expr, java.lang.Object value)	Set the value of xpath to value.
private Pointer	JXPathContextReferenceImpl.setValue(java.lang.String xpath, Expression expr, java.lang.Object value, boolean create)	Set the specified value.

Constructors in org.apache.commons.jxpath.ri with parameters of type Expression

Constructor	Description
JXPathCompiledExpression(java.lang.String xpath, Expression expression)	Create a new JXPathCompiledExpression.

Uses of Expression in org.apache.commons.jxpath.ri.axes

Fields in org.apache.commons.jxpath.ri.axes declared as Expression

Modifier and Type	Field	Description
private Expression	PredicateContext.expression
private Expression	PredicateContext.nameTestExpression

Methods in org.apache.commons.jxpath.ri.axes with parameters of type Expression

Modifier and Type	Method	Description
private static NodePointer	SimplePathInterpreter.createNullPointerForPredicates(EvalContext context, NodePointer parent, Step[] steps, int currentStep, Expression[] predicates, int currentPredicate)	Creates a "null pointer" that starts with predicates.
private static NodePointer	SimplePathInterpreter.doPredicate(EvalContext context, NodePointer parent, Step[] steps, int currentStep, Expression[] predicates, int currentPredicate)	Evaluates predicates and proceeds with the subsequent steps of the path.
private static NodePointer	SimplePathInterpreter.doPredicateIndex(EvalContext context, NodePointer parent, Step[] steps, int currentStep, Expression[] predicates, int currentPredicate)	Evaluate a subscript predicate: see if the node is a collection and if the index is inside the collection.
private static NodePointer	SimplePathInterpreter.doPredicateName(EvalContext context, NodePointer parent, Step[] steps, int currentStep, Expression[] predicates, int currentPredicate)	Execute a NameAttributeTest predicate
private static NodePointer	SimplePathInterpreter.doPredicatesStandard(EvalContext context, java.util.List parents, Step[] steps, int currentStep, Expression[] predicates, int currentPredicate)	Called exclusively for standard InfoSet nodes, e.g.
private static int	SimplePathInterpreter.indexFromPredicate(EvalContext context, Expression predicate)	Extract an integer from a subscript predicate.
static NodePointer	SimplePathInterpreter.interpretSimpleExpressionPath(EvalContext context, NodePointer root, Expression[] predicates, Step[] steps)	Interpret the steps of a simple expression path that starts with the given root, which is the result of evaluation of the root expression of the expression path, applies the given predicates to it and then follows the given steps.
private static java.lang.String	SimplePathInterpreter.keyFromPredicate(EvalContext context, Expression predicate)	Extracts the string value of the expression from a predicate like [@name=expression].

Constructors in org.apache.commons.jxpath.ri.axes with parameters of type Expression

Constructor	Description
PredicateContext(EvalContext parentContext, Expression expression)	Create a new PredicateContext.

Uses of Expression in org.apache.commons.jxpath.ri.compiler

Subclasses of Expression in org.apache.commons.jxpath.ri.compiler

Modifier and Type	Class	Description
class	Constant	A compile tree element containing a constant number or string.
class	CoreFunction	An element of the compile tree representing one of built-in functions like "position()" or "number()".
class	CoreOperation	The common subclass for tree elements representing core operations like "+", "- ", "*" etc.
class	CoreOperationAdd	Implementation of Expression for the operation "+".
class	CoreOperationAnd	Implementation of Expression for the operation "and".
class	CoreOperationCompare	Common superclass for the implementations of Expression for the operations "=" and "!=".
class	CoreOperationDivide	Implementation of Expression for the operation "div".
class	CoreOperationEqual	Implementation of Expression for the operation "=".
class	CoreOperationGreaterThan	Implementation of Expression for the operation ">".
class	CoreOperationGreaterThanOrEqual	Implementation of Expression for the operation ">=".
class	CoreOperationLessThan	Implementation of Expression for the operation "<".
class	CoreOperationLessThanOrEqual	Implementation of Expression for the operation "<=".
class	CoreOperationMod	Implementation of Expression for the operation "mod".
class	CoreOperationMultiply	Implementation of Expression for the operation "*".
class	CoreOperationNegate	Implementation of Expression for the operation unary "-".
class	CoreOperationNotEqual	Implementation of Expression for the operation "!=".
class	CoreOperationOr	Implementation of Expression for the operation "or".
class	CoreOperationRelationalExpression	Base implementation of Expression for the operations ">", ">=", "<", "<=".
class	CoreOperationSubtract	Implementation of Expression for the operation "-".
class	CoreOperationUnion	Implementation of Expression for the operation "|".
class	ExpressionPath	An element of the parse tree that represents an expression path, which is a path that starts with an expression like a function call: getFoo(.) /bar.
class	ExtensionFunction	Represents an element of the parse tree representing an extension function call.
class	LocationPath
class	NameAttributeTest	Captures the foo[@name=expr] expression.
class	Operation
class	Path
class	VariableReference	An element of the compile tree holding a variable reference.

Fields in org.apache.commons.jxpath.ri.compiler declared as Expression

Modifier and Type	Field	Description
protected Expression[]	Operation.args	Expression[] of arguments
private Expression	ExpressionPath.expression
private Expression[]	ExpressionPath.predicates
private Expression[]	Step.predicates

Methods in org.apache.commons.jxpath.ri.compiler that return Expression

Modifier and Type	Method	Description
Expression	CoreFunction.getArg1()	Convenience method to return the first argument.
Expression	CoreFunction.getArg2()	Convenience method to return the second argument.
Expression	CoreFunction.getArg3()	Convenience method to return the third argument.
Expression[]	Operation.getArguments()	Get the arguments.
Expression	ExpressionPath.getExpression()	Get the expression.
Expression	NameAttributeTest.getNameTestExpression()	Get the name test expression.
Expression[]	ExpressionPath.getPredicates()	Predicates are the expressions in brackets that may follow the root expression of the path.
Expression[]	Step.getPredicates()	Get the predicates.
private Expression[]	TreeCompiler.toExpressionArray(java.lang.Object[] array)	Get an Object[] as an Expression[].

Methods in org.apache.commons.jxpath.ri.compiler with parameters of type Expression

Modifier and Type	Method	Description
protected boolean	Path.areBasicPredicates(Expression[] predicates)	Learn whether the elements of the specified array are "basic" predicates.
protected boolean	CoreOperationCompare.equal(EvalContext context, Expression left, Expression right)	Compares two values.
private boolean	TreeCompiler.isNameAttributeTest(Expression arg)	Learn whether arg is a name attribute test.
private java.lang.String	CoreOperation.parenthesize(Expression expression, boolean left)	Wrap an expression in parens if necessary.

Constructors in org.apache.commons.jxpath.ri.compiler with parameters of type Expression

Constructor	Description
CoreFunction(int functionCode, Expression[] args)	Create a new CoreFunction.
CoreOperation(Expression[] args)	Create a new CoreOperation.
CoreOperationAdd(Expression[] args)	Create a new CoreOperationAdd.
CoreOperationAnd(Expression[] args)	Create a new CoreOperationAnd.
CoreOperationCompare(Expression arg1, Expression arg2)	Create a new CoreOperationCompare.
CoreOperationCompare(Expression arg1, Expression arg2, boolean invert)	Create a new CoreOperationCompare.
CoreOperationDivide(Expression arg1, Expression arg2)	Create a new CoreOperationDivide.
CoreOperationEqual(Expression arg1, Expression arg2)	Create a new CoreOperationEqual
CoreOperationGreaterThan(Expression arg1, Expression arg2)	Create a new CoreOperationGreaterThan.
CoreOperationGreaterThanOrEqual(Expression arg1, Expression arg2)	Create a new CoreOperationGreaterThanOrEqual.
CoreOperationLessThan(Expression arg1, Expression arg2)	Create a new CoreOperationLessThan.
CoreOperationLessThanOrEqual(Expression arg1, Expression arg2)	Create a new CoreOperationLessThanOrEqual.
CoreOperationMod(Expression arg1, Expression arg2)	Create a new CoreOperationMod.
CoreOperationMultiply(Expression arg1, Expression arg2)	Create a new CoreOperationMultiply.
CoreOperationNegate(Expression arg)	Create a new CoreOperationNegate.
CoreOperationNotEqual(Expression arg1, Expression arg2)	Create a new CoreOperationNotEqual.
CoreOperationOr(Expression[] args)	Create a new CoreOperationOr.
CoreOperationRelationalExpression(Expression[] args)	Create a new CoreOperationRelationalExpression.
CoreOperationSubtract(Expression arg1, Expression arg2)	Create a new CoreOperationSubtract.
CoreOperationUnion(Expression[] args)	Create a new CoreOperationUnion.
ExpressionPath(Expression expression, Expression[] predicates, Step[] steps)	Create a new ExpressionPath.
ExtensionFunction(QName functionName, Expression[] args)	Create a new ExtensionFunction.
NameAttributeTest(Expression namePath, Expression nameValue)	Create a new NameAttributeTest.
Operation(Expression[] args)	Create a new Operation.
Step(int axis, NodeTest nodeTest, Expression[] predicates)	Create a new Step.