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com.sun.org.apache.xpath.internal.jaxp

pack-priv Class XPathImplUtil

extends Object
Class Inheritance
Known Direct Subclasses
com.sun.org.apache.xpath.internal.jaxp.XPathExpressionImpl, com.sun.org.apache.xpath.internal.jaxp.XPathImpl
Imports
com.sun.org.apache.xalan.internal.res.XSLMessages, com.sun.org.apache.xml.internal.dtm.DTM, com.sun.org.apache.xpath.internal.axes.LocPathIterator, com.sun.org.apache.xpath.internal.objects.XObject, com.sun.org.apache.xpath.internal.res.XPATHErrorResources, java.io.IOException, javax.xml.XMLConstants, javax.xml.namespace.QName, javax.xml.parsers.DocumentBuilderFactory, .ParserConfigurationException, javax.xml.transform.TransformerException, javax.xml.xpath.XPathConstants, .XPathEvaluationResult, .XPathExpressionException, .XPathFunctionResolver, .XPathNodes, .XPathVariableResolver, jdk.xml.internal.JdkXmlFeatures, .JdkXmlUtils, .XMLSecurityManager, .XMLSecurityPropertyManager, org.w3c.dom.Document, .Node, org.w3c.dom.traversal.NodeIterator, org.xml.sax.InputSource, .SAXException
This class contains several utility methods used by XPathImpl and XPathExpressionImpl

Field Summary

Modifier and TypeField and Description
pack-priv JdkXmlFeatures
featureManager

pack-priv boolean
featureSecureProcessing

pack-priv XPathFunctionResolver
functionResolver

pack-priv boolean
overrideDefaultParser

pack-priv JAXPPrefixResolver
prefixResolver

pack-priv XPathVariableResolver
variableResolver

pack-priv XMLSecurityManager
xmlSecMgr

pack-priv XMLSecurityPropertyManager
xmlSecPropMgr

Constructor Summary

AccessConstructor and Description
pack-priv
XPathImplUtil()

Method Summary

Modifier and TypeMethod and Description
pack-priv XObject

Returns:

an XObject
eval(Object
The XPath context
contextItem, XPath
The internal XPath engine
xpath)

Evaluate an XPath context using the internal XPath engine

pack-priv Document

Returns:

a DOM Document
getDocument(InputSource
The InputSource of the document
source)

Parse the input source and return a Document.

pack-priv Object

Returns:

result per the return type
getResultAsType(XObject
the result of an evaluation
resultObject, QName
the return type
returnType)

Get result depending on the QName type defined in XPathConstants

pack-priv <
The class type
T> T

Returns:

an instance of the specified type or null if the XObject returned an UNKNOWN object type.
getXPathResult(XObject
the result of an evaluation
resultObject, Class<T>
The class type expected to be returned by the XPath expression.
type)

Construct an XPathExpressionResult object based on the result of the evaluation and cast to the specified class type.

pack-priv void
isSupported(QName
the return type
returnType)

Check if the requested returnType is supported.

pack-priv <
The class type
T> void
isSupportedClassType(Class<T>
The type to be checked
type)

Check whether or not the specified type is supported

pack-priv <
the type of the reference
T> void
requireNonNull(T
the parameter to check for nullity
param, String
the parameter name
paramName)

Checks that the specified parameter is not null.

Inherited from java.lang.Object:
cloneequalsfinalizegetClasshashCodenotifynotifyAlltoStringwaitwaitwait

Field Detail

featureManagerback to summary
pack-priv JdkXmlFeatures featureManager
featureSecureProcessingback to summary
pack-priv boolean featureSecureProcessing
functionResolverback to summary
pack-priv XPathFunctionResolver functionResolver
overrideDefaultParserback to summary
pack-priv boolean overrideDefaultParser
prefixResolverback to summary
pack-priv JAXPPrefixResolver prefixResolver
variableResolverback to summary
pack-priv XPathVariableResolver variableResolver
xmlSecMgrback to summary
pack-priv XMLSecurityManager xmlSecMgr
xmlSecPropMgrback to summary
pack-priv XMLSecurityPropertyManager xmlSecPropMgr

Constructor Detail

XPathImplUtilback to summary
pack-priv XPathImplUtil()

Method Detail

evalback to summary
pack-priv XObject eval(Object contextItem, XPath xpath) throws TransformerException

Evaluate an XPath context using the internal XPath engine

Parameters
contextItem:Object

The XPath context

xpath:XPath

The internal XPath engine

Returns:XObject

an XObject

Exceptions
TransformerException:
If the expression cannot be evaluated.
getDocumentback to summary
pack-priv Document getDocument(InputSource source) throws XPathExpressionException

Parse the input source and return a Document.

Parameters
source:InputSource

The InputSource of the document

Returns:Document

a DOM Document

Exceptions
XPathExpressionException:
if there is an error parsing the source.
getResultAsTypeback to summary
pack-priv Object getResultAsType(XObject resultObject, QName returnType) throws TransformerException

Get result depending on the QName type defined in XPathConstants

Parameters
resultObject:XObject

the result of an evaluation

returnType:QName

the return type

Returns:Object

result per the return type

Exceptions
TransformerException:
if the result can not be converted to the specified return type.
getXPathResultback to summary
pack-priv <T> T getXPathResult(XObject resultObject, Class<T> type) throws TransformerException

Construct an XPathExpressionResult object based on the result of the evaluation and cast to the specified class type.

Parameters
<T>
The class type
resultObject:XObject

the result of an evaluation

type:Class<T>

The class type expected to be returned by the XPath expression.

Returns:T

an instance of the specified type or null if the XObject returned an UNKNOWN object type.

Exceptions
TransformerException:
if there is an error converting the result to the specified type. It's unlikely to happen. This is mostly needed by the internal XPath engine.
isSupportedback to summary
pack-priv void isSupported(QName returnType)

Check if the requested returnType is supported.

Parameters
returnType:QName

the return type

Exceptions
IllegalArgumentException:
if the return type is not supported
isSupportedClassTypeback to summary
pack-priv <T> void isSupportedClassType(Class<T> type)

Check whether or not the specified type is supported

Parameters
<T>
The class type
type:Class<T>

The type to be checked

Exceptions
IllegalArgumentException:
if the type is not supported
requireNonNullback to summary
pack-priv <T> void requireNonNull(T param, String paramName)

Checks that the specified parameter is not null.

Parameters
<T>
the type of the reference
param:T

the parameter to check for nullity

paramName:String

the parameter name

Exceptions
NullPointerException:
if param is null