org.exist.xquery
Class QuantifiedExpression

java.lang.Object
  org.exist.xquery.AbstractExpression
      org.exist.xquery.BindingExpression
          org.exist.xquery.QuantifiedExpression

All Implemented Interfaces:

Expression

public class QuantifiedExpression
extends BindingExpression

Represents a quantified expression: "some ... in ... satisfies", "every ... in ... satisfies".

Author:

Wolfgang Meier (wolfgang@exist-db.org)

Field Summary

static int	EVERY
static int	SOME

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, POSITIONAL_PREDICATE, SINGLE_STEP_EXECUTION, USE_TREE_TRAVERSAL

Constructor Summary

QuantifiedExpression(XQueryContext context, int mode)

Method Summary

void	analyze(AnalyzeContextInfo contextInfo, OrderSpec[] orderBy, GroupSpec[] groupBy)
void	dump(ExpressionDumper dumper) Write a diagnostic dump of the expression to the passed ExpressionDumper.
Sequence	eval(Sequence contextSequence, Item contextItem, Sequence resultSequence, GroupedValueSequenceTable groupedSequence)
int	getDependencies() Returns Dependency.DEFAULT_DEPENDENCIES.
int	returnsType() The static return type of the expression.
String	toString()

Methods inherited from class org.exist.xquery.BindingExpression

analyze, eval, getInputSequence, getReturnExpression, getVariable, getWhereExpression, preselect, resetState, setGroupReturnExpr, setGroupSpecs, setGroupVariable, setInputSequence, setOrderSpecs, setReturnExpression, setSequenceType, setToGroupVariable, setVariable, setWhereExpression

Methods inherited from class org.exist.xquery.AbstractExpression

accept, eval, getCardinality, getColumn, getContext, getContextDocSet, getContextId, getExpressionId, getLine, getPrimaryAxis, getSource, setASTNode, setContextDocSet, setLocation, setPrimaryAxis

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

SOME

public static final int SOME

See Also:

Constant Field Values

EVERY

public static final int EVERY

See Also:

Constant Field Values

Constructor Detail

QuantifiedExpression

public QuantifiedExpression(XQueryContext context,
                            int mode)

Parameters:

context -

Method Detail

analyze

public void analyze(AnalyzeContextInfo contextInfo,
                    OrderSpec[] orderBy,
                    GroupSpec[] groupBy)
             throws XPathException

Specified by:

analyze in class BindingExpression

Throws:

XPathException

eval

public Sequence eval(Sequence contextSequence,
                     Item contextItem,
                     Sequence resultSequence,
                     GroupedValueSequenceTable groupedSequence)
              throws XPathException

Specified by:

eval in class BindingExpression

Throws:

XPathException

dump

public void dump(ExpressionDumper dumper)

Description copied from interface: Expression

Write a diagnostic dump of the expression to the passed ExpressionDumper.

Parameters:

dumper - the expression dumper to write to

toString

public String toString()

Overrides:

toString in class Object

returnsType

public int returnsType()

Description copied from interface: Expression

The static return type of the expression. This method should return one of the type constants defined in class Type. If the return type cannot be determined statically, return Type.ITEM.

Specified by:

returnsType in interface Expression

Specified by:

returnsType in class AbstractExpression

getDependencies

public int getDependencies()

Description copied from class: AbstractExpression

Returns Dependency.DEFAULT_DEPENDENCIES.

Specified by:

getDependencies in interface Expression

Overrides:

getDependencies in class BindingExpression

Returns:

set of bit-flags

See Also:

Expression.getDependencies()