XMLSchemaLoader (Xerces2 Implementation)
Date: 2016-02-19

org.apache.xerces.impl.xs

## Class XMLSchemaLoader

- java.lang.Object
- - org.apache.xerces.impl.xs.XMLSchemaLoader

- All Implemented Interfaces:
    XSElementDeclHelper, org.apache.xerces.xni.grammars.XMLGrammarLoader, org.apache.xerces.xni.parser.XMLComponent, org.apache.xerces.xs.XSLoader, org.w3c.dom.DOMConfiguration

      public class XMLSchemaLoader
      extends java.lang.Object
      implements org.apache.xerces.xni.grammars.XMLGrammarLoader, org.apache.xerces.xni.parser.XMLComponent, XSElementDeclHelper, org.apache.xerces.xs.XSLoader, org.w3c.dom.DOMConfiguration

  This class implements xni.grammars.XMLGrammarLoader. It also serves as implementation of xs.XSLoader interface and DOMConfiguration interface. This class is designed to interact either with a proxy for a user application which wants to preparse schemas, or with our own Schema validator. It is hoped that none of these "external" classes will therefore need to communicate directly with XSDHandler in future.

  This class only knows how to make XSDHandler do its thing. The caller must ensure that all its properties (schemaLocation, JAXPSchemaSource etc.) have been properly set.

  Version:
    $Id: XMLSchemaLoader.java 982466 2010-08-05 04:41:01Z mrglavas $
  Author:
    Neil Graham, IBM

  # INTERNAL:

    Usage of this class is not supported. It may be altered or removed at any time.

- - ### Field Summary

    Fields
    Modifier and Type | Field and Description
    --- | ---
    `protected static java.lang.String` | `ALLOW_JAVA_ENCODINGS` Feature identifier: allow java encodings to be recognized when parsing schema docs.
    `protected static java.lang.String` | `AUGMENT_PSVI`
    `protected static java.lang.String` | `CONTINUE_AFTER_FATAL_ERROR` Feature identifier: continue after fatal error.
    `protected static java.lang.String` | `DISALLOW_DOCTYPE` Feature: disallow doctype
    `protected static java.lang.String` | `ENTITY_MANAGER`
    `static java.lang.String` | `ENTITY_RESOLVER` Property identifier: entity resolver.
    `protected static java.lang.String` | `ERROR_HANDLER` Property identifier: error handler.
    `static java.lang.String` | `ERROR_REPORTER` Property identifier: error reporter.
    `protected static java.lang.String` | `GENERATE_SYNTHETIC_ANNOTATIONS` Feature: generate synthetic annotations
    `protected static java.lang.String` | `HONOUR_ALL_SCHEMALOCATIONS` Feature identifier: honour all schemaLocations
    `protected static java.lang.String` | `JAXP_SCHEMA_SOURCE` Property identifier: JAXP schema source.
    `protected static java.lang.String` | `LOCALE` Property identifier: locale.
    `protected static java.lang.String` | `NAMESPACE_GROWTH` Feature identifier: namespace growth
    `protected static java.lang.String` | `PARSER_SETTINGS`
    `protected static java.lang.String` | `SCHEMA_DV_FACTORY` Property identifier: Schema DV Factory
    `protected static java.lang.String` | `SCHEMA_FULL_CHECKING` Feature identifier: schema full checking
    `protected static java.lang.String` | `SCHEMA_LOCATION` Property identifier: schema location.
    `protected static java.lang.String` | `SCHEMA_NONS_LOCATION` Property identifier: no namespace schema location.
    `protected static java.lang.String` | `SECURITY_MANAGER`
    `protected static java.lang.String` | `STANDARD_URI_CONFORMANT_FEATURE` Feature identifier: standard uri conformant feature.
    `static java.lang.String` | `SYMBOL_TABLE` Property identifier: symbol table.
    `protected static java.lang.String` | `TOLERATE_DUPLICATES` Feature identifier: tolerate duplicates
    `protected static java.lang.String` | `VALIDATE_ANNOTATIONS` Feature identifier: validate annotations.
    `static java.lang.String` | `XMLGRAMMAR_POOL` Property identifier: grammar pool.

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `XMLSchemaLoader()`
    `XMLSchemaLoader(SymbolTable symbolTable)`

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `boolean` | `canSetParameter(java.lang.String name, java.lang.Object value)` Check if setting a parameter to a specific value is supported.
    `org.w3c.dom.DOMConfiguration` | `getConfig()` The configuration of a document.
    `org.apache.xerces.xni.parser.XMLEntityResolver` | `getEntityResolver()` Returns the registered entity resolver.
    `org.apache.xerces.xni.parser.XMLErrorHandler` | `getErrorHandler()` Returns the registered error handler.
    `boolean` | `getFeature(java.lang.String featureId)` Returns the state of a feature.
    `java.lang.Boolean` | `getFeatureDefault(java.lang.String featureId)` Returns the default state for a feature, or null if this component does not want to report a default value for this feature.
    `XSElementDecl` | `getGlobalElementDecl(org.apache.xerces.xni.QName element)`
    `java.util.Locale` | `getLocale()` Return the Locale the XMLGrammarLoader is using.
    `java.lang.Object` | `getParameter(java.lang.String name)` Return the value of a parameter if known.
    `org.w3c.dom.DOMStringList` | `getParameterNames()` The list of the parameters supported by this `DOMConfiguration` object and for which at least one value can be set by the application.
    `java.lang.Object` | `getProperty(java.lang.String propertyId)` Returns the state of a property.
    `java.lang.Object` | `getPropertyDefault(java.lang.String propertyId)` Returns the default state for a property, or null if this component does not want to report a default value for this property.
    `java.lang.String[]` | `getRecognizedFeatures()` Returns a list of feature identifiers that are recognized by this XMLGrammarLoader.
    `java.lang.String[]` | `getRecognizedProperties()` Returns a list of property identifiers that are recognized by this XMLGrammarLoader.
    `org.apache.xerces.xs.XSModel` | `load(org.w3c.dom.ls.LSInput is)` Parse an XML Schema document from a resource identified by a `LSInput` .
    `org.apache.xerces.xni.grammars.Grammar` | `loadGrammar(org.apache.xerces.xni.parser.XMLInputSource source)` Returns a Grammar object by parsing the contents of the entity pointed to by source.
    `void` | `loadGrammar(org.apache.xerces.xni.parser.XMLInputSource[] source)` Returns a Grammar object by parsing the contents of the entities pointed to by sources.
    `org.apache.xerces.xs.XSModel` | `loadInputList(org.apache.xerces.xs.LSInputList is)` Parses the content of XML Schema documents specified as a list of `LSInput`s.
    `org.apache.xerces.xs.XSModel` | `loadURI(java.lang.String uri)` Parse an XML Schema document from a location identified by a URI reference.
    `org.apache.xerces.xs.XSModel` | `loadURIList(org.apache.xerces.xs.StringList uriList)` Parses the content of XML Schema documents specified as the list of URI references.
    `static void` | `processExternalHints(java.lang.String sl, java.lang.String nsl, java.util.Hashtable locations, XMLErrorReporter er)`
    `void` | `reset(org.apache.xerces.xni.parser.XMLComponentManager componentManager)` Resets the component.
    `static org.apache.xerces.xni.parser.XMLInputSource` | `resolveDocument(XSDDescription desc, java.util.Hashtable locationPairs, org.apache.xerces.xni.parser.XMLEntityResolver entityResolver)` This method tries to resolve location of the given schema.
    `void` | `setEntityResolver(org.apache.xerces.xni.parser.XMLEntityResolver entityResolver)` Sets the entity resolver.
    `void` | `setErrorHandler(org.apache.xerces.xni.parser.XMLErrorHandler errorHandler)` Sets the error handler.
    `void` | `setFeature(java.lang.String featureId, boolean state)` Sets the state of a feature.
    `void` | `setLocale(java.util.Locale locale)` Set the locale to use for messages.
    `void` | `setParameter(java.lang.String name, java.lang.Object value)` Set the value of a parameter.
    `void` | `setProperty(java.lang.String propertyId, java.lang.Object state)` Sets the state of a property.
    `static boolean` | `tokenizeSchemaLocationStr(java.lang.String schemaStr, java.util.Hashtable locations, java.lang.String base)`

    - ### Methods inherited from class java.lang.Object

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

- - ### Field Detail

    - #### SCHEMA_FULL_CHECKING

          protected static final java.lang.String SCHEMA_FULL_CHECKING

      Feature identifier: schema full checking
      See Also:
        Constant Field Values

    - #### CONTINUE_AFTER_FATAL_ERROR

          protected static final java.lang.String CONTINUE_AFTER_FATAL_ERROR

      Feature identifier: continue after fatal error.
      See Also:
        Constant Field Values

    - #### ALLOW_JAVA_ENCODINGS

          protected static final java.lang.String ALLOW_JAVA_ENCODINGS

      Feature identifier: allow java encodings to be recognized when parsing schema docs.
      See Also:
        Constant Field Values

    - #### STANDARD_URI_CONFORMANT_FEATURE

          protected static final java.lang.String STANDARD_URI_CONFORMANT_FEATURE

      Feature identifier: standard uri conformant feature.
      See Also:
        Constant Field Values

    - #### VALIDATE_ANNOTATIONS

          protected static final java.lang.String VALIDATE_ANNOTATIONS

      Feature identifier: validate annotations.
      See Also:
        Constant Field Values

    - #### DISALLOW_DOCTYPE

          protected static final java.lang.String DISALLOW_DOCTYPE

      Feature: disallow doctype
      See Also:
        Constant Field Values

    - #### GENERATE_SYNTHETIC_ANNOTATIONS

          protected static final java.lang.String GENERATE_SYNTHETIC_ANNOTATIONS

      Feature: generate synthetic annotations
      See Also:
        Constant Field Values

    - #### HONOUR_ALL_SCHEMALOCATIONS

          protected static final java.lang.String HONOUR_ALL_SCHEMALOCATIONS

      Feature identifier: honour all schemaLocations
      See Also:
        Constant Field Values

    - #### AUGMENT_PSVI

          protected static final java.lang.String AUGMENT_PSVI

      See Also:
        Constant Field Values

    - #### PARSER_SETTINGS

          protected static final java.lang.String PARSER_SETTINGS

      See Also:
        Constant Field Values

    - #### NAMESPACE_GROWTH

          protected static final java.lang.String NAMESPACE_GROWTH

      Feature identifier: namespace growth
      See Also:
        Constant Field Values

    - #### TOLERATE_DUPLICATES

          protected static final java.lang.String TOLERATE_DUPLICATES

      Feature identifier: tolerate duplicates
      See Also:
        Constant Field Values

    - #### SCHEMA_DV_FACTORY

          protected static final java.lang.String SCHEMA_DV_FACTORY

      Property identifier: Schema DV Factory
      See Also:
        Constant Field Values

    - #### SYMBOL_TABLE

          public static final java.lang.String SYMBOL_TABLE

      Property identifier: symbol table.
      See Also:
        Constant Field Values

    - #### ERROR_REPORTER

          public static final java.lang.String ERROR_REPORTER

      Property identifier: error reporter.
      See Also:
        Constant Field Values

    - #### ERROR_HANDLER

          protected static final java.lang.String ERROR_HANDLER

      Property identifier: error handler.
      See Also:
        Constant Field Values

    - #### ENTITY_RESOLVER

          public static final java.lang.String ENTITY_RESOLVER

      Property identifier: entity resolver.
      See Also:
        Constant Field Values

    - #### XMLGRAMMAR_POOL

          public static final java.lang.String XMLGRAMMAR_POOL

      Property identifier: grammar pool.
      See Also:
        Constant Field Values

    - #### SCHEMA_LOCATION

          protected static final java.lang.String SCHEMA_LOCATION

      Property identifier: schema location.
      See Also:
        Constant Field Values

    - #### SCHEMA_NONS_LOCATION

          protected static final java.lang.String SCHEMA_NONS_LOCATION

      Property identifier: no namespace schema location.
      See Also:
        Constant Field Values

    - #### JAXP_SCHEMA_SOURCE

          protected static final java.lang.String JAXP_SCHEMA_SOURCE

      Property identifier: JAXP schema source.
      See Also:
        Constant Field Values

    - #### SECURITY_MANAGER

          protected static final java.lang.String SECURITY_MANAGER

      See Also:
        Constant Field Values

    - #### LOCALE

          protected static final java.lang.String LOCALE

      Property identifier: locale.
      See Also:
        Constant Field Values

    - #### ENTITY_MANAGER

          protected static final java.lang.String ENTITY_MANAGER

      See Also:
        Constant Field Values

  - ### Constructor Detail

    - #### XMLSchemaLoader

          public XMLSchemaLoader()

    - #### XMLSchemaLoader

          public XMLSchemaLoader(SymbolTable symbolTable)

  - ### Method Detail

    - #### getRecognizedFeatures

          public java.lang.String[] getRecognizedFeatures()

      Returns a list of feature identifiers that are recognized by this XMLGrammarLoader. This method may return null if no features are recognized.
      Specified by:
        `getRecognizedFeatures` in interface `org.apache.xerces.xni.grammars.XMLGrammarLoader`
      Specified by:
        `getRecognizedFeatures` in interface `org.apache.xerces.xni.parser.XMLComponent`

    - #### getFeature

          public boolean getFeature(java.lang.String featureId)
                             throws org.apache.xerces.xni.parser.XMLConfigurationException

      Returns the state of a feature.
      Specified by:
        `getFeature` in interface `org.apache.xerces.xni.grammars.XMLGrammarLoader`
      Parameters:
        `featureId` - The feature identifier.
      Throws:
        `org.apache.xerces.xni.parser.XMLConfigurationException` - Thrown on configuration error.

    - #### setFeature

          public void setFeature(java.lang.String featureId,
                        boolean state)
                          throws org.apache.xerces.xni.parser.XMLConfigurationException

      Sets the state of a feature.
      Specified by:
        `setFeature` in interface `org.apache.xerces.xni.grammars.XMLGrammarLoader`
      Specified by:
        `setFeature` in interface `org.apache.xerces.xni.parser.XMLComponent`
      Parameters:
        `featureId` - The feature identifier.
        `state` - The state of the feature.
      Throws:
        `org.apache.xerces.xni.parser.XMLConfigurationException` - Thrown when a feature is not recognized or cannot be set.

    - #### getRecognizedProperties

          public java.lang.String[] getRecognizedProperties()

      Returns a list of property identifiers that are recognized by this XMLGrammarLoader. This method may return null if no properties are recognized.
      Specified by:
        `getRecognizedProperties` in interface `org.apache.xerces.xni.grammars.XMLGrammarLoader`
      Specified by:
        `getRecognizedProperties` in interface `org.apache.xerces.xni.parser.XMLComponent`

    - #### getProperty

          public java.lang.Object getProperty(java.lang.String propertyId)
                                       throws org.apache.xerces.xni.parser.XMLConfigurationException

      Returns the state of a property.
      Specified by:
        `getProperty` in interface `org.apache.xerces.xni.grammars.XMLGrammarLoader`
      Parameters:
        `propertyId` - The property identifier.
      Throws:
        `org.apache.xerces.xni.parser.XMLConfigurationException` - Thrown on configuration error.

    - #### setProperty

          public void setProperty(java.lang.String propertyId,
                         java.lang.Object state)
                           throws org.apache.xerces.xni.parser.XMLConfigurationException

      Sets the state of a property.
      Specified by:
        `setProperty` in interface `org.apache.xerces.xni.grammars.XMLGrammarLoader`
      Specified by:
        `setProperty` in interface `org.apache.xerces.xni.parser.XMLComponent`
      Parameters:
        `propertyId` - The property identifier.
        `state` - The state of the property.
      Throws:
        `org.apache.xerces.xni.parser.XMLConfigurationException` - Thrown when a property is not recognized or cannot be set.

    - #### setLocale

          public void setLocale(java.util.Locale locale)

      Set the locale to use for messages.
      Specified by:
        `setLocale` in interface `org.apache.xerces.xni.grammars.XMLGrammarLoader`
      Parameters:
        `locale` - The locale object to use for localization of messages.
      Throws:
        `org.apache.xerces.xni.XNIException` - Thrown if the parser does not support the specified locale.

    - #### getLocale

          public java.util.Locale getLocale()

      Return the Locale the XMLGrammarLoader is using.
      Specified by:
        `getLocale` in interface `org.apache.xerces.xni.grammars.XMLGrammarLoader`

    - #### setErrorHandler

          public void setErrorHandler(org.apache.xerces.xni.parser.XMLErrorHandler errorHandler)

      Sets the error handler.
      Specified by:
        `setErrorHandler` in interface `org.apache.xerces.xni.grammars.XMLGrammarLoader`
      Parameters:
        `errorHandler` - The error handler.

    - #### getErrorHandler

          public org.apache.xerces.xni.parser.XMLErrorHandler getErrorHandler()

      Returns the registered error handler.
      Specified by:
        `getErrorHandler` in interface `org.apache.xerces.xni.grammars.XMLGrammarLoader`

    - #### setEntityResolver

          public void setEntityResolver(org.apache.xerces.xni.parser.XMLEntityResolver entityResolver)

      Sets the entity resolver.
      Specified by:
        `setEntityResolver` in interface `org.apache.xerces.xni.grammars.XMLGrammarLoader`
      Parameters:
        `entityResolver` - The new entity resolver.

    - #### getEntityResolver

          public org.apache.xerces.xni.parser.XMLEntityResolver getEntityResolver()

      Returns the registered entity resolver.
      Specified by:
        `getEntityResolver` in interface `org.apache.xerces.xni.grammars.XMLGrammarLoader`

    - #### loadGrammar

          public void loadGrammar(org.apache.xerces.xni.parser.XMLInputSource[] source)
                           throws java.io.IOException,
                                  org.apache.xerces.xni.XNIException

      Returns a Grammar object by parsing the contents of the entities pointed to by sources.
      Parameters:
        `source` - the locations of the entity which forms the staring point of the grammars to be constructed
      Throws:
        `java.io.IOException` - when a problem is encounted reading the entity
        `org.apache.xerces.xni.XNIException` - when a condition arises (such as a FatalError) that requires parsing of the entity be terminated

    - #### loadGrammar

          public org.apache.xerces.xni.grammars.Grammar loadGrammar(org.apache.xerces.xni.parser.XMLInputSource source)
                                                             throws java.io.IOException,
                                                                    org.apache.xerces.xni.XNIException

      Returns a Grammar object by parsing the contents of the entity pointed to by source.
      Specified by:
        `loadGrammar` in interface `org.apache.xerces.xni.grammars.XMLGrammarLoader`
      Parameters:
        `source` - the location of the entity which forms the starting point of the grammar to be constructed.
      Throws:
        `java.io.IOException` - When a problem is encountered reading the entity XNIException When a condition arises (such as a FatalError) that requires parsing of the entity be terminated.
        `org.apache.xerces.xni.XNIException`

    - #### resolveDocument

          public static org.apache.xerces.xni.parser.XMLInputSource resolveDocument(XSDDescription desc,
                                                                    java.util.Hashtable locationPairs,
                                                                    org.apache.xerces.xni.parser.XMLEntityResolver entityResolver)
                                                                             throws java.io.IOException

      This method tries to resolve location of the given schema. The loader stores the namespace/location pairs in a hashtable (use "" as the namespace of absent namespace). When resolving an entity, loader first tries to find in the hashtable whether there is a value for that namespace, if so, pass that location value to the user-defined entity resolver.
      Parameters:
        `desc` -
        `locationPairs` -
        `entityResolver` -
      Returns:
        the XMLInputSource
      Throws:
        `java.io.IOException`

    - #### processExternalHints

          public static void processExternalHints(java.lang.String sl,
                                  java.lang.String nsl,
                                  java.util.Hashtable locations,
                                  XMLErrorReporter er)

    - #### tokenizeSchemaLocationStr

          public static boolean tokenizeSchemaLocationStr(java.lang.String schemaStr,
                                          java.util.Hashtable locations,
                                          java.lang.String base)

    - #### getFeatureDefault

          public java.lang.Boolean getFeatureDefault(java.lang.String featureId)

      Description copied from interface: `org.apache.xerces.xni.parser.XMLComponent`
      Returns the default state for a feature, or null if this component does not want to report a default value for this feature.
      Specified by:
        `getFeatureDefault` in interface `org.apache.xerces.xni.parser.XMLComponent`
      Parameters:
        `featureId` - The feature identifier.

    - #### getPropertyDefault

          public java.lang.Object getPropertyDefault(java.lang.String propertyId)

      Description copied from interface: `org.apache.xerces.xni.parser.XMLComponent`
      Returns the default state for a property, or null if this component does not want to report a default value for this property.
      Specified by:
        `getPropertyDefault` in interface `org.apache.xerces.xni.parser.XMLComponent`
      Parameters:
        `propertyId` - The property identifier.

    - #### reset

          public void reset(org.apache.xerces.xni.parser.XMLComponentManager componentManager)
                     throws org.apache.xerces.xni.parser.XMLConfigurationException

      Description copied from interface: `org.apache.xerces.xni.parser.XMLComponent`
      Resets the component. The component can query the component manager about any features and properties that affect the operation of the component.
      Specified by:
        `reset` in interface `org.apache.xerces.xni.parser.XMLComponent`
      Parameters:
        `componentManager` - The component manager.
      Throws:
        `org.apache.xerces.xni.parser.XMLConfigurationException`

    - #### getConfig

          public org.w3c.dom.DOMConfiguration getConfig()

      Description copied from interface: `org.apache.xerces.xs.XSLoader`
      The configuration of a document. It maintains a table of recognized parameters. Using the configuration, it is possible to change the behavior of the load methods. The configuration may support the setting of and the retrieval of the following non-boolean parameters defined on the `DOMConfiguration` interface: `error-handler` (`DOMErrorHandler`) and `resource-resolver` (`LSResourceResolver`).
      The following list of boolean parameters is defined:
      `"validate"`
        `true`
          [required] (default) Validate an XML Schema during loading. If validation errors are found, the error handler is notified.
        `false`
          [optional] Do not report errors during the loading of an XML Schema document.
      Specified by:
        `getConfig` in interface `org.apache.xerces.xs.XSLoader`

    - #### load

          public org.apache.xerces.xs.XSModel load(org.w3c.dom.ls.LSInput is)

      Description copied from interface: `org.apache.xerces.xs.XSLoader`
      Parse an XML Schema document from a resource identified by a `LSInput` .
      Specified by:
        `load` in interface `org.apache.xerces.xs.XSLoader`
      Parameters:
        `is` - The `LSInput` from which the source document is to be read.
      Returns:
        An XSModel representing this schema.

    - #### loadInputList

          public org.apache.xerces.xs.XSModel loadInputList(org.apache.xerces.xs.LSInputList is)

      Description copied from interface: `org.apache.xerces.xs.XSLoader`
      Parses the content of XML Schema documents specified as a list of `LSInput`s.
      Specified by:
        `loadInputList` in interface `org.apache.xerces.xs.XSLoader`
      Parameters:
        `is` - The list of `LSInput`s from which the XML Schema documents are to be read.
      Returns:
        An XSModel representing the schema documents.

    - #### loadURI

          public org.apache.xerces.xs.XSModel loadURI(java.lang.String uri)

      Description copied from interface: `org.apache.xerces.xs.XSLoader`
      Parse an XML Schema document from a location identified by a URI reference. If the URI contains a fragment identifier, the behavior is not defined by this specification.
      Specified by:
        `loadURI` in interface `org.apache.xerces.xs.XSLoader`
      Parameters:
        `uri` - The location of the XML Schema document to be read.
      Returns:
        An XSModel representing this schema.

    - #### loadURIList

          public org.apache.xerces.xs.XSModel loadURIList(org.apache.xerces.xs.StringList uriList)

      Description copied from interface: `org.apache.xerces.xs.XSLoader`
      Parses the content of XML Schema documents specified as the list of URI references. If the URI contains a fragment identifier, the behavior is not defined by this specification.
      Specified by:
        `loadURIList` in interface `org.apache.xerces.xs.XSLoader`
      Parameters:
        `uriList` - The list of URI locations.
      Returns:
        An XSModel representing the schema documents.

    - #### canSetParameter

          public boolean canSetParameter(java.lang.String name,
                                java.lang.Object value)

      Description copied from interface: `org.w3c.dom.DOMConfiguration`
      Check if setting a parameter to a specific value is supported.
      Specified by:
        `canSetParameter` in interface `org.w3c.dom.DOMConfiguration`
      Parameters:
        `name` - The name of the parameter to check.
        `value` - An object. if `null`, the returned value is `true`.
      Returns:
        `true` if the parameter could be successfully set to the specified value, or `false` if the parameter is not recognized or the requested value is not supported. This does not change the current value of the parameter itself.

    - #### getParameter

          public java.lang.Object getParameter(java.lang.String name)
                                        throws org.w3c.dom.DOMException

      Description copied from interface: `org.w3c.dom.DOMConfiguration`
      Return the value of a parameter if known.
      Specified by:
        `getParameter` in interface `org.w3c.dom.DOMConfiguration`
      Parameters:
        `name` - The name of the parameter.
      Returns:
        The current object associated with the specified parameter or `null` if no object has been associated or if the parameter is not supported.
      Throws:
        `org.w3c.dom.DOMException` - NOT_FOUND_ERR: Raised when the parameter name is not recognized.

    - #### getParameterNames

          public org.w3c.dom.DOMStringList getParameterNames()

      Description copied from interface: `org.w3c.dom.DOMConfiguration`
      The list of the parameters supported by this `DOMConfiguration` object and for which at least one value can be set by the application. Note that this list can also contain parameter names defined outside this specification.
      Specified by:
        `getParameterNames` in interface `org.w3c.dom.DOMConfiguration`

    - #### setParameter

          public void setParameter(java.lang.String name,
                          java.lang.Object value)
                            throws org.w3c.dom.DOMException

      Description copied from interface: `org.w3c.dom.DOMConfiguration`
      Set the value of a parameter.
      Specified by:
        `setParameter` in interface `org.w3c.dom.DOMConfiguration`
      Parameters:
        `name` - The name of the parameter to set.
        `value` - The new value or `null` if the user wishes to unset the parameter. While the type of the value parameter is defined as `DOMUserData`, the object type must match the type defined by the definition of the parameter. For example, if the parameter is "error-handler", the value must be of type `DOMErrorHandler`.
      Throws:
        `org.w3c.dom.DOMException` - NOT_FOUND_ERR: Raised when the parameter name is not recognized.
        NOT_SUPPORTED_ERR: Raised when the parameter name is recognized but the requested value cannot be set.
        TYPE_MISMATCH_ERR: Raised if the value type for this parameter name is incompatible with the expected value type.

    - #### getGlobalElementDecl

          public XSElementDecl getGlobalElementDecl(org.apache.xerces.xni.QName element)

      Specified by:
        `getGlobalElementDecl` in interface `XSElementDeclHelper`

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