org.exist.xquery.functions.util
Class FunctionFunction
java.lang.Object
org.exist.xquery.AbstractExpression
org.exist.xquery.PathExpr
org.exist.xquery.Function
org.exist.xquery.BasicFunction
org.exist.xquery.functions.util.FunctionFunction
- All Implemented Interfaces:
- CompiledXQuery, Expression, CompiledExpression
public class FunctionFunction
- extends BasicFunction
- Author:
- wolf
Fields inherited from interface org.exist.xquery.Expression |
DOT_TEST, EXPRESSION_ID_INVALID, IGNORE_CONTEXT, IN_NODE_CONSTRUCTOR, IN_PREDICATE, IN_UPDATE, IN_WHERE_CLAUSE, NEED_INDEX_INFO, NO_CONTEXT_ID, SINGLE_STEP_EXECUTION, USE_TREE_TRAVERSAL |
Methods inherited from class org.exist.xquery.Function |
accept, createFunction, dump, getArgument, getArgumentCount, getArguments, getASTNode, getCardinality, getDependencies, getName, getParent, getSignature, isCalledAs, returnsType, setArguments, setASTNode, setParent, setPrimaryAxis, toString |
Methods inherited from class org.exist.xquery.PathExpr |
add, add, addPath, addPredicate, dump, getContext, getDocumentSet, getExpression, getLastExpression, getLength, getLiteralValue, getSource, isValid, replaceExpression, replaceLastExpression, reset, setContext, setSource |
signature
public static final FunctionSignature signature
FunctionFunction
public FunctionFunction(XQueryContext context)
- Parameters:
context
-
analyze
public void analyze(AnalyzeContextInfo contextInfo)
throws XPathException
- Description copied from interface:
Expression
- Statically analyze the expression and its subexpressions.
During the static analysis phase, the query engine can detect
unknown variables and some type errors.
- Specified by:
analyze
in interface Expression
- Overrides:
analyze
in class Function
- Throws:
XPathException
eval
public Sequence eval(Sequence[] args,
Sequence contextSequence)
throws XPathException
- Description copied from class:
BasicFunction
- Process the function. All arguments are passed in the array args. The number of
arguments, their type and cardinality have already been checked to match
the function signature.
- Specified by:
eval
in class BasicFunction
- Throws:
XPathException
resetState
public void resetState(boolean postOptimization)
- Description copied from interface:
Expression
- Called to inform an expression that it should reset to its initial state.
All cached data in the expression object should be dropped. For example,
the xmldb:document() function calls this method whenever the input document
set has changed.
- Specified by:
resetState
in interface Expression
- Overrides:
resetState
in class PathExpr
Copyright (C) Wolfgang Meier. All rights reserved.