Package net.sf.saxon.functions

Class DeepEqual

java.lang.Object

net.sf.saxon.functions.AbstractFunction

net.sf.saxon.functions.SystemFunction

net.sf.saxon.functions.CollatingFunctionFixed

net.sf.saxon.functions.DeepEqual

All Implemented Interfaces:

Callable, StatefulSystemFunction, FunctionItem, GroundedValue, Item, Sequence

public class DeepEqual
extends CollatingFunctionFixed

XSLT 2.0 deep-equal() function, where the collation is already known. Supports deep comparison of two sequences (of nodes and/or atomic values) optionally using a collation

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	DeepEqual.DeepEqualOptions

Field Summary

Fields

Modifier and Type	Field	Description
static OptionsParameter	OPTION_DETAILS

Constructor Summary

Constructors

Constructor	Description
DeepEqual()

Method Summary

Modifier and Type	Method	Description
BooleanValue	call(XPathContext context, Sequence[] arguments)	Execute a dynamic call to the function
static String	deepEqual(NodeInfo n1, NodeInfo n2, XPathContext context, DeepEqual.DeepEqualOptions options)
static boolean	deepEqual(SequenceIterator op1, SequenceIterator op2, XPathContext context, DeepEqual.DeepEqualOptions options)	Determine when two sequences are deep-equal
String	getStreamerName()	Get a name that identifies the class that can be used to evaluate this function in streaming mode, that is, supplying one item or event at a time as it is delivered by the parser.
Expression	makeFunctionCall(Expression... arguments)	Make an expression that either calls this function, or that is equivalent to a call on this function

Methods inherited from class net.sf.saxon.functions.CollatingFunctionFixed

copy, exportAttributes, getAtomicComparer, getPreAllocatedAtomicComparer, getStringCollator, importAttributes, isSubstringMatchingFunction, preAllocateComparer, setCollationName, setRetainedStaticContext

Methods inherited from class net.sf.saxon.functions.SystemFunction

dependsOnContextItem, dynamicCall, equals, export, exportAdditionalArguments, fixArguments, getArity, getCardinality, getContextNode, getDescription, getDetails, getElaborator, getErrorCodeForTypeErrors, getFunctionItemType, getFunctionName, getIntegerBounds, getNetCost, getOperandRoles, getRequiredType, getResultItemType, getResultItemType, getRetainedStaticContext, getSpecialProperties, getStaticBaseUriString, getUniStringArg, hashCode, isSequenceVariadic, isTrustedResultType, makeCall, makeFunction, makeFunction40, makeOptimizedFunctionCall, resultIfEmpty, setArity, setDetails, supplyTypeInformation, toShortString, toString, typeCheckCaller

Methods inherited from class net.sf.saxon.functions.AbstractFunction

atomize, deepEqual40, deepEquals, effectiveBooleanValue, getAnnotations, getUnicodeStringValue, isArray, isMap, makeNewContext, simplify, typeCheck

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface net.sf.saxon.om.FunctionItem

getGenre

Methods inherited from interface net.sf.saxon.om.GroundedValue

asIterable, concatenate, containsNode, materialize

Methods inherited from interface net.sf.saxon.om.Item

getLength, getStringValue, head, isStreamed, itemAt, iterate, reduce, subsequence

Methods inherited from interface net.sf.saxon.om.Sequence

makeRepeatable

Field Details

OPTION_DETAILS

public static OptionsParameter OPTION_DETAILS

Constructor Details

DeepEqual

public DeepEqual()

Method Details

makeFunctionCall

public Expression makeFunctionCall(Expression... arguments)

Description copied from class: SystemFunction

Make an expression that either calls this function, or that is equivalent to a call on this function

Overrides:

makeFunctionCall in class SystemFunction

Parameters:

arguments - the supplied arguments to the function call

Returns:

either a function call on this function, or an expression that delivers the same result

deepEqual

public static boolean deepEqual(SequenceIterator op1,
 SequenceIterator op2,
 XPathContext context,
 DeepEqual.DeepEqualOptions options)
                         throws XPathException

Determine when two sequences are deep-equal

Parameters:

op1 - the first sequence

op2 - the second sequence

context - the XPathContext item

options - comparison options.

Returns:

true if the sequences are deep-equal

Throws:

XPathException - if either sequence contains a function item

deepEqual

public static String deepEqual(NodeInfo n1,
 NodeInfo n2,
 XPathContext context,
 DeepEqual.DeepEqualOptions options)
                        throws XPathException

Throws:

XPathException

call

public BooleanValue call(XPathContext context,
 Sequence[] arguments)
                  throws XPathException

Execute a dynamic call to the function

Parameters:

context - the dynamic evaluation context

arguments - the values of the arguments, supplied as Sequences.

Returns:

the result of the evaluation, in the form of a Sequence. It is the responsibility of the callee to ensure that the type of result conforms to the expected result type.

Throws:

XPathException - (should not happen)

getStreamerName

public String getStreamerName()

Description copied from class: SystemFunction

Get a name that identifies the class that can be used to evaluate this function in streaming mode, that is, supplying one item or event at a time as it is delivered by the parser. Special streaming support is generally available in Saxon-EE for all system functions that take a sequence as their argument.

Overrides:

getStreamerName in class SystemFunction

Returns:

a name that identifies a class that supports streamed evaluation of this system function, or null if no such class is available. The mapping of names to classes is defined in the Saxon-EE class StreamerMap. In non-streaming Saxon editions (HE and PE) the method always returns null.