net.sf.saxon.expr

Interface ExportAgent

All Known Implementing Classes:

AdjacentTextNodeMerger, AnalyzeString, AncestorQualifiedPattern, AnchorPattern, AndExpression, ApplyImports, ApplyNextMatchingTemplate, ApplyTemplates, ArithmeticExpression, ArithmeticExpression10, Assignation, AtomicSequenceConverter, Atomizer, AttributeCreator, AttributeGetter, AxisExpression, BasePatternWithPredicate, BinaryExpression, Block, BooleanExpression, BooleanExpressionPattern, BreakInstr, CallTemplate, CardinalityChecker, CastableExpression, CastExpression, CastingExpression, Choose, Comment, CompareToIntegerConstant, ComputedAttribute, ComputedElement, ConditionalBlock, ConditionalSorter, ConsumingOperand, ContextItemExpression, Copy, CopyOf, CurrentGroupCall, CurrentGroupingKeyCall, CurrentItemExpression, Doctype, DocumentInstr, DocumentSorter, EagerLetExpression, ElementCreator, EmptyTextNodeRemover, EquivalenceComparison, ErrorExpression, ExceptPattern, Expression, FilterExpression, FirstItemExpression, FixedAttribute, FixedElement, FLWORExpression, ForEach, ForEachGroup, ForExpression, Fork, FunctionCall, GeneralComparison, GeneralComparison10, GeneralComparison20, GeneralNodePattern, GeneralPositionalPattern, GlobalVariableReference, HomogeneityChecker, IdentityComparison, InstanceOfExpression, Instruction, IntegerRangeTest, IntegratedFunctionCall, IntersectPattern, IsLastExpression, ItemChecker, IterateInstr, JAXPVariableReference, LastItemExpression, LetExpression, Literal, LocalParam, LocalParamBlock, LocalVariableReference, LookupAllExpression, LookupExpression, MergeInstr, Message, NamespaceConstructor, NegateExpression, NextIteration, NextMatch, NodeSetPattern, NodeTestPattern, NumberInstruction, NumberSequenceFormatter, OnEmptyExpr, OnNonEmptyExpr, OrExpression, OuterForExpression, ParentNodeConstructor, Pattern, PatternThatSetsCurrent, ProcessingInstruction, PseudoExpression, QuantifiedExpression, RangeExpression, ResultDocument, RootExpression, SequenceInstr, SimpleExpression, SimpleNodeConstructor, SimplePositionalPattern, SimpleStepExpression, SingleItemFilter, SingletonAtomizer, SingletonIntersectExpression, SlashExpression, SortExpression, SortKeyDefinition, SortKeyDefinitionList, SourceDocument, SquareArrayConstructor, StaticFunctionCall, StreamingFunctionArgumentPattern, StringLiteral, SubscriptExpression, SuppliedParameterReference, SystemFunctionCall, SystemFunctionCall.Optimized, TailCallLoop, TailExpression, TraceExpression, TryCatch, TupleExpression, UnaryExpression, UnionPattern, UniversalPattern, UntypedSequenceConverter, UseAttributeSet, UserFunctionCall, ValueComparison, ValueOf, VariableReference, VennExpression, VennPattern, WherePopulated, XPathFunctionCall

public interface ExportAgent

An export agent performs the job of exporting an expression to a SEF file. Normally the expression itself acts as its own export agent, and includes an export() method to do the exporting. In a few cases, notably literals containing function items, extra machinery is required to export a value, and a com.saxonica.functions.hof.UserFunctionReference.BoundUserFunction in particular includes custom export methods to handle different cases.

Method Summary

Modifier and Type	Method and Description
void	export(ExpressionPresenter out) Diagnostic print of expression structure.

Method Detail

export

void export(ExpressionPresenter out)
     throws XPathException

Diagnostic print of expression structure. The abstract expression tree is written to the supplied output destination.

Parameters:

out - the expression presenter used to display the structure

Throws:

XPathException - if the export fails, for example if an expression is found that won't work in the target environment.