Uses of Class
org.htmlunit.xpath.Expression

Packages that use Expression

Package	Description
org.htmlunit.xpath	Implementation of XPath; for the most part, only classes meant for public use are found at this root level of the XPath packages.
org.htmlunit.xpath.axes	Implementation of XPath LocationPath support -- primary classes are LocPathIterator and UnionPathIterator.
org.htmlunit.xpath.compiler	Implements an XPath parser which produces an OpMap, and a so-called Compiler which produces an expression tree for fast evaluation.
org.htmlunit.xpath.functions	Implements XPath functions -- each function is derived from Function, FunctionOneArg, Function2Args, etc, with number-of-arguments checking being applied mainly at compile time -- this package only implements XPath functions, XSLT functions are found in the "templates" package.
org.htmlunit.xpath.objects	Implementation of XPath polymorphic type objects -- this package will grow as XPath objects are expanded to support XML Schema data types.
org.htmlunit.xpath.operations	Support for XPath operations, such as +, -, string(), etc.
org.htmlunit.xpath.patterns	Implementation of XPath nodeTest support, and XSLT pattern matching support.

Uses of Expression in org.htmlunit.xpath

Methods in org.htmlunit.xpath with parameters of type Expression

Modifier and Type	Method	Description
abstract boolean	Expression.deepEquals(Expression expr)	Compare this object with another object and see if they are equal, include the sub heararchy.
protected final boolean	Expression.isSameClass(Expression expr)	This is a utility method to tell if the passed in class is the same class as this.
boolean	XPathVisitor.visitPredicate(Expression pred)	Visit a predicate within a location path.

Constructors in org.htmlunit.xpath with parameters of type Expression

Modifier	Constructor	Description
	XPath(Expression expr)	Construct an XPath object.

Uses of Expression in org.htmlunit.xpath.axes

Subclasses of Expression in org.htmlunit.xpath.axes

Modifier and Type	Class	Description
class	AttributeIterator	This class implements an optimized iterator for attribute axes patterns.
class	AxesWalker	Serves as common interface for axes Walkers, and stores common state variables.
class	BasicTestIterator	Base for iterators that handle predicates.
class	ChildIterator	This class implements an optimized iterator for "node()" patterns, that is, any children of the context node.
class	ChildTestIterator	This class implements an optimized iterator for children patterns that have a node test, and possibly a predicate.
class	DescendantIterator	This class implements an optimized iterator for descendant, descendant-or-self, or "//foo" patterns.
class	FilterExprWalker	Walker for the OP_VARIABLE, or OP_FUNCTION, or OP_GROUP, op codes.
class	LocPathIterator	This class extends NodeSetDTM, which implements NodeIterator, and fetches nodes one at a time in document order based on a XPath.
class	NodeSequence	This class is the dynamic wrapper for a Xalan DTMIterator instance, and provides random access capabilities.
class	OneStepIterator	This class implements a general iterator for those LocationSteps with only one step, and perhaps a predicate.
class	OneStepIteratorForward	This class implements a general iterator for those LocationSteps with only one step, and perhaps a predicate, that only go forward (i.e. it can not be used with ancestors, preceding, etc.)
class	PredicatedNodeTest
class	ReverseAxesWalker	Walker for a reverse axes.
class	SelfIteratorNoPredicate	This class implements an optimized iterator for "." patterns, that is, the self axes without any predicates.
class	UnionChildIterator	This class defines a simplified type of union iterator that only tests along the child axes.
class	UnionPathIterator	This class extends NodeSetDTM, which implements DTMIterator, and fetches nodes one at a time in document order based on a XPath UnionExpr.
class	WalkingIterator	Location path iterator that uses Walkers.
class	WalkingIteratorSorted	This class iterates over set of nodes that needs to be sorted.

Methods in org.htmlunit.xpath.axes that return Expression

Modifier and Type	Method	Description
Expression	PredicatedNodeTest.getPredicate(int index)	Get a predicate expression at the given index.

Methods in org.htmlunit.xpath.axes with parameters of type Expression

Modifier and Type	Method	Description
boolean	AxesWalker.deepEquals(Expression expr)	Compare this object with another object and see if they are equal, include the sub heararchy.
boolean	DescendantIterator.deepEquals(Expression expr)	Compare this object with another object and see if they are equal, include the sub heararchy.
boolean	FilterExprWalker.deepEquals(Expression expr)	Compare this object with another object and see if they are equal, include the sub heararchy.
boolean	OneStepIterator.deepEquals(Expression expr)	Compare this object with another object and see if they are equal, include the sub heararchy.
boolean	OneStepIteratorForward.deepEquals(Expression expr)	Compare this object with another object and see if they are equal, include the sub heararchy.
boolean	PredicatedNodeTest.deepEquals(Expression expr)	Compare this object with another object and see if they are equal, include the sub heararchy.
boolean	UnionPathIterator.deepEquals(Expression expr)	Compare this object with another object and see if they are equal, include the sub heararchy.
boolean	WalkingIterator.deepEquals(Expression expr)	Compare this object with another object and see if they are equal, include the sub heararchy.
static XNodeSet	FilterExprWalker.executeFilterExpr(int context, XPathContext xctxt, PrefixResolver prefixResolver, boolean isTopLevel, Expression expr)	Execute the expression.
boolean	HasPositionalPredChecker.visitPredicate(Expression pred)	Visit a predicate within a location path.

Uses of Expression in org.htmlunit.xpath.compiler

Methods in org.htmlunit.xpath.compiler that return Expression

Modifier and Type	Method	Description
protected Expression	Compiler.and(int opPos)	Compile an 'and' operation.
protected Expression	Compiler.arg(int opPos)	Compile a function argument.
protected Expression	Compiler.bool(int opPos)	Compile a 'boolean(...)' operation.
Expression	Compiler.compile(int opPos)	Execute the XPath object from a given opcode position.
protected Expression	Compiler.div(int opPos)	Compile a 'div' operation.
protected Expression	Compiler.equals(int opPos)	Compile a '=' operation.
Expression[]	Compiler.getCompiledPredicates(int opPos)	Compile a zero or more predicates for a given match pattern.
protected Expression	Compiler.group(int opPos)	Compile an expression group.
protected Expression	Compiler.gt(int opPos)	Compile a '&gr;' operation.
protected Expression	Compiler.gte(int opPos)	Compile a '>=' operation.
protected Expression	Compiler.literal(int opPos)	Compile a literal string value.
Expression	Compiler.locationPath(int opPos)	Compile a location path.
Expression	Compiler.locationPathPattern(int opPos)	Compile a location match pattern unit expression.
protected Expression	Compiler.lt(int opPos)	Compile a '<' operation.
protected Expression	Compiler.lte(int opPos)	Compile a '<=' operation.
protected Expression	Compiler.matchPattern(int opPos)	Compile an entire match pattern expression.
protected Expression	Compiler.minus(int opPos)	Compile a '-' operation.
protected Expression	Compiler.mod(int opPos)	Compile a 'mod' operation.
protected Expression	Compiler.mult(int opPos)	Compile a '*' operation.
protected Expression	Compiler.neg(int opPos)	Compile a unary '-' operation.
protected Expression	Compiler.notequals(int opPos)	Compile a '!
protected Expression	Compiler.number(int opPos)	Compile a 'number(...)' operation.
protected Expression	Compiler.numberlit(int opPos)	Compile a literal number value.
protected Expression	Compiler.or(int opPos)	Compile an 'or' operation.
protected Expression	Compiler.plus(int opPos)	Compile a '+' operation.
Expression	Compiler.predicate(int opPos)	Compile a location step predicate expression.
protected Expression	Compiler.string(int opPos)	Compile a 'string(...)' operation.
protected Expression	Compiler.union(int opPos)	Compile a location path union.

Uses of Expression in org.htmlunit.xpath.functions

Subclasses of Expression in org.htmlunit.xpath.functions

Modifier and Type	Class	Description
class	FuncBoolean	Execute the Boolean() function.
class	FuncCeiling	Execute the Ceiling() function.
class	FuncConcat	Execute the Concat() function.
class	FuncContains	Execute the Contains() function.
class	FuncCount	Execute the Count() function.
class	FuncFalse	Execute the False() function.
class	FuncFloor	Execute the Floor() function.
class	FuncId	Execute the Id() function.
class	FuncLang	Execute the Lang() function.
class	FuncLast	Execute the Last() function.
class	FuncLocalPart	Execute the LocalPart() function.
class	FuncNamespace	Execute the Namespace() function.
class	FuncNormalizeSpace	Execute the normalize-space() function.
class	FuncNot	Execute the Not() function.
class	FuncNumber	Execute the Number() function.
class	FuncPosition	Execute the Position() function.
class	FuncQname	Execute the Qname() function.
class	FuncRound	Execute the round() function.
class	FuncStartsWith	Execute the StartsWith() function.
class	FuncString	Execute the String() function.
class	FuncStringLength	Execute the StringLength() function.
class	FuncSubstring	Execute the Substring() function.
class	FuncSubstringAfter	Execute the SubstringAfter() function.
class	FuncSubstringBefore	Execute the SubstringBefore() function.
class	FuncSum	Execute the Sum() function.
class	Function	This is a superclass of all XPath functions.
class	Function2Args	Base class for functions that accept two arguments.
class	Function3Args	Base class for functions that accept three arguments.
class	FunctionDef1Arg	Base class for functions that accept one argument that can be defaulted if not specified.
class	FunctionMultiArgs	Base class for functions that accept an undetermined number of multiple arguments.
class	FunctionOneArg	Base class for functions that accept one argument.
class	FuncTranslate	Execute the Translate() function.
class	FuncTrue	Execute the True() function.

Methods in org.htmlunit.xpath.functions with parameters of type Expression

Modifier and Type	Method	Description
boolean	Function.deepEquals(Expression expr)	Compare this object with another object and see if they are equal, include the sub heararchy.
boolean	Function2Args.deepEquals(Expression expr)	Compare this object with another object and see if they are equal, include the sub heararchy.
boolean	Function3Args.deepEquals(Expression expr)	Compare this object with another object and see if they are equal, include the sub heararchy.
boolean	FunctionMultiArgs.deepEquals(Expression expr)	Compare this object with another object and see if they are equal, include the sub heararchy.
boolean	FunctionOneArg.deepEquals(Expression expr)	Compare this object with another object and see if they are equal, include the sub heararchy.
void	Function.setArg(Expression arg, int argNum)	Set an argument expression for a function.
void	Function2Args.setArg(Expression arg, int argNum)	Set an argument expression for a function.
void	Function3Args.setArg(Expression arg, int argNum)	Set an argument expression for a function.
void	FunctionMultiArgs.setArg(Expression arg, int argNum)	Set an argument expression for a function.
void	FunctionOneArg.setArg(Expression arg, int argNum)	Set an argument expression for a function.

Uses of Expression in org.htmlunit.xpath.objects

Subclasses of Expression in org.htmlunit.xpath.objects

Modifier and Type	Class	Description
class	XBoolean	This class represents an XPath boolean object, and is capable of converting the boolean to other types, such as a string.
class	XNodeSet	This class represents an XPath nodeset object, and is capable of converting the nodeset to other types, such as a string.
class	XNumber	This class represents an XPath number, and is capable of converting the number to other types, such as a string.
class	XObject	This class represents an XPath object, and is capable of converting the object to various types, such as a string.
class	XString	This class represents an XPath string object, and is capable of converting the string to other types, such as a number.

Methods in org.htmlunit.xpath.objects with parameters of type Expression

Modifier and Type	Method	Description
boolean	XObject.deepEquals(Expression expr)	Compare this object with another object and see if they are equal, include the sub heararchy.

Uses of Expression in org.htmlunit.xpath.operations

Subclasses of Expression in org.htmlunit.xpath.operations

Modifier and Type	Class	Description
class	And	The 'and' operation expression executor.
class	Bool	The 'boolean()' operation expression executer.
class	Div	The 'div' operation expression executer.
class	Equals	The '=' operation expression executer.
class	Gt	The '>' operation expression executor.
class	Gte	The '>=' operation expression executor.
class	Lt	The '<' operation expression executor.
class	Lte	The '<=' operation expression executor.
class	Minus	The binary '-' operation expression executer.
class	Mod	The 'mod' operation expression executer.
class	Mult	The '*' operation expression executer.
class	Neg	The unary '-' operation expression executer.
class	NotEquals	The '!
class	Number	The 'number()' operation expression executer.
class	Operation	The baseclass for a binary operation.
class	Or	The 'or' operation expression executer.
class	Plus	The '+' operation expression executer.
class	String	The 'string()' operation expression executer.
class	UnaryOperation	The unary operation base class.

Fields in org.htmlunit.xpath.operations declared as Expression

Modifier and Type	Field	Description
protected Expression	Operation.m_left	The left operand expression.
protected Expression	Operation.m_right	The right operand expression.
protected Expression	UnaryOperation.m_right	The operand for the operation.

Methods in org.htmlunit.xpath.operations with parameters of type Expression

Modifier and Type	Method	Description
boolean	Operation.deepEquals(Expression expr)	Compare this object with another object and see if they are equal, include the sub heararchy.
boolean	UnaryOperation.deepEquals(Expression expr)	Compare this object with another object and see if they are equal, include the sub heararchy.
void	Operation.setLeftRight(Expression l, Expression r)	Set the left and right operand expressions for this operation.
void	UnaryOperation.setRight(Expression r)	Set the expression operand for the operation.

Uses of Expression in org.htmlunit.xpath.patterns

Subclasses of Expression in org.htmlunit.xpath.patterns

Modifier and Type	Class	Description
class	ContextMatchStepPattern	Special context node pattern matcher.
class	FunctionPattern	Match pattern step that contains a function.
class	NodeTest	This is the basic node test class for both match patterns and location path steps.
class	StepPattern	This class represents a single pattern match step.
class	UnionPattern	This class represents a union pattern, which can have multiple individual StepPattern patterns.

Methods in org.htmlunit.xpath.patterns that return Expression

Modifier and Type	Method	Description
Expression	StepPattern.getPredicate(int i)	Get a predicate expression.
Expression[]	StepPattern.getPredicates()	Set the list of predicate expressions for this pattern step.

Methods in org.htmlunit.xpath.patterns with parameters of type Expression

Modifier and Type	Method	Description
boolean	NodeTest.deepEquals(Expression expr)	Compare this object with another object and see if they are equal, include the sub heararchy.
boolean	StepPattern.deepEquals(Expression expr)	Compare this object with another object and see if they are equal, include the sub heararchy.
boolean	UnionPattern.deepEquals(Expression expr)	Compare this object with another object and see if they are equal, include the sub heararchy.
void	StepPattern.setPredicates(Expression[] predicates)	Set the predicates for this match pattern step.

Constructors in org.htmlunit.xpath.patterns with parameters of type Expression

Modifier	Constructor	Description
	FunctionPattern(Expression expr, int axis)	Construct a FunctionPattern from a expression.