org.exist.xquery.functions.util
Class Eval

java.lang.Object
  org.exist.xquery.AbstractExpression
      org.exist.xquery.PathExpr
          org.exist.xquery.Function
              org.exist.xquery.BasicFunction
                  org.exist.xquery.functions.util.Eval

All Implemented Interfaces:

CompiledXQuery, Expression, RewritableExpression, org.xmldb.api.base.CompiledExpression

public class Eval
extends BasicFunction

Field Summary

protected static FunctionParameterSequenceType	CACHE_FLAG
protected static FunctionParameterSequenceType	CONTEXT_ARGUMENT
protected static FunctionParameterSequenceType	EVAL_ARGUMENT
protected static FunctionParameterSequenceType	EVAL_CONTEXT_ITEM
protected static FunctionParameterSequenceType	EXTERNAL_VARIABLE
protected static FunctionParameterSequenceType	INLINE_CONTEXT
protected static FunctionReturnSequenceType	RETURN_ITEM_TYPE
protected static FunctionReturnSequenceType	RETURN_NODE_TYPE
protected static FunctionReturnSequenceType	RETURN_THREADID_TYPE
static FunctionSignature[]	signatures

Fields inherited from class org.exist.xquery.Function

BUILTIN_FUNCTION_NS, mySignature

Fields inherited from class org.exist.xquery.PathExpr

inPredicate, keepVirtual, LOG, staticContext, steps

Fields inherited from class org.exist.xquery.AbstractExpression

column, context, contextDocSet, contextId, line, unordered

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, NON_STREAMABLE, POSITIONAL_PREDICATE, SINGLE_STEP_EXECUTION, UNORDERED, USE_TREE_TRAVERSAL

Constructor Summary

Eval(XQueryContext context, FunctionSignature signature)

Method Summary

Sequence

eval(Sequence[] args, Sequence contextSequence) Process the function.

Methods inherited from class org.exist.xquery.BasicFunction

eval

Methods inherited from class org.exist.xquery.Function

accept, analyze, checkArgument, checkArguments, createFunction, dump, getArgument, getArgumentCount, getArguments, getCardinality, getDependencies, getName, getParent, getParentModule, getSignature, isCalledAs, returnsType, setArguments, setParent, setPrimaryAxis, simplify, toString

Methods inherited from class org.exist.xquery.PathExpr

add, add, addPath, addPredicate, allowMixNodesInReturn, dump, getColumn, getContext, getDocumentSet, getExpression, getLastExpression, getLength, getLine, getLiteralValue, getPrimaryAxis, getSubExpression, getSubExpressionCount, isValid, replaceExpression, replaceLastExpression, reset, resetState, setContext, setUseStaticContext

Methods inherited from class org.exist.xquery.AbstractExpression

eval, getContextDocSet, getContextId, getExpressionId, getSource, match, needsReset, setASTNode, setContextDocSet, setContextId, setLocation

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.exist.xquery.CompiledXQuery

eval, getSource

Field Detail

EVAL_CONTEXT_ITEM

protected static final FunctionParameterSequenceType EVAL_CONTEXT_ITEM

EVAL_ARGUMENT

protected static final FunctionParameterSequenceType EVAL_ARGUMENT

INLINE_CONTEXT

protected static final FunctionParameterSequenceType INLINE_CONTEXT

CONTEXT_ARGUMENT

protected static final FunctionParameterSequenceType CONTEXT_ARGUMENT

CACHE_FLAG

protected static final FunctionParameterSequenceType CACHE_FLAG

EXTERNAL_VARIABLE

protected static final FunctionParameterSequenceType EXTERNAL_VARIABLE

RETURN_NODE_TYPE

protected static final FunctionReturnSequenceType RETURN_NODE_TYPE

RETURN_THREADID_TYPE

protected static final FunctionReturnSequenceType RETURN_THREADID_TYPE

RETURN_ITEM_TYPE

protected static final FunctionReturnSequenceType RETURN_ITEM_TYPE

signatures

public static final FunctionSignature[] signatures

Constructor Detail

Eval

public Eval(XQueryContext context,
            FunctionSignature signature)

Parameters:

context -

signature -

Method Detail

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