Xerces-C++: DOMLSParser Class Reference

Xerces-C++ 3.3.0

List of all members
DOMLSParser Class Referenceabstract

DOMLSParser provides an API for parsing XML documents and building the corresponding DOM document tree. More...

`#include <xercesc/dom/DOMLSParser.hpp>`

## Public Types
Public Constants
enum | ActionType { ACTION_APPEND_AS_CHILDREN = 1 , ACTION_REPLACE_CHILDREN = 2 , ACTION_INSERT_BEFORE = 3 , ACTION_INSERT_AFTER = 4 , ACTION_REPLACE = 5 }
| A set of possible actions for the parseWithContext method. More...

## Public Member Functions
Destructor
virtual | ~DOMLSParser ()
| Destructor.
Functions introduced in DOM Level 3
virtual DOMConfiguration * | getDomConfig ()=0
| Get a pointer to the `DOMConfiguration` object used when parsing an input source.
virtual const DOMLSParserFilter * | getFilter () const =0
| Get a const pointer to the application filter.
virtual bool | getAsync () const =0
| Return whether the parser is asynchronous.
virtual bool | getBusy () const =0
| Return whether the parser is busy parsing.
virtual void | setFilter (DOMLSParserFilter *const filter)=0
| Set the application filter.
virtual DOMDocument * | parse (const DOMLSInput *source)=0
| Parse an XML document from a resource identified by a `DOMLSInput`.
virtual DOMDocument * | parseURI (const XMLCh *const uri)=0
| Parse an XML document from a location identified by a URI reference [IETF RFC 2396].
virtual DOMDocument * | parseURI (const char *const uri)=0
| Parse an XML document from a location identified by a URI reference [IETF RFC 2396].
virtual DOMNode * | parseWithContext (const DOMLSInput *source, DOMNode *contextNode, const ActionType action)=0
| Parse an XML fragment from a resource identified by a `DOMLSInput` and insert the content into an existing document at the position specified with the context and action arguments.
virtual void | abort ()=0
| Abort the loading of the document that is currently being loaded by the `DOMLSParser`.
Non-standard Extension
virtual void | release ()=0
| Called to indicate that this DOMLSParser is no longer in use and that the implementation may relinquish any resources associated with it.
virtual void | resetDocumentPool ()=0
| Reset the documents vector pool and release all the associated memory back to the system.
virtual Grammar * | loadGrammar (const DOMLSInput *source, const Grammar::GrammarType grammarType, const bool toCache=false)=0
| Preparse schema grammar (XML Schema, DTD, etc.) via an input source object.
virtual Grammar * | loadGrammar (const XMLCh *const systemId, const Grammar::GrammarType grammarType, const bool toCache=false)=0
| Preparse schema grammar (XML Schema, DTD, etc.) via a file path or URL.
virtual Grammar * | loadGrammar (const char *const systemId, const Grammar::GrammarType grammarType, const bool toCache=false)=0
| Preparse schema grammar (XML Schema, DTD, etc.) via a file path or URL.
virtual Grammar * | getGrammar (const XMLCh *const nameSpaceKey) const =0
| Retrieve the grammar that is associated with the specified namespace key.
virtual Grammar * | getRootGrammar () const =0
| Retrieve the grammar where the root element is declared.
virtual const XMLCh * | getURIText (unsigned int uriId) const =0
| Returns the string corresponding to a URI id from the URI string pool.
virtual void | resetCachedGrammarPool ()=0
| Clear the cached grammar pool.
virtual XMLFilePos | getSrcOffset () const =0
| Returns the current src offset within the input source.

## Protected Member Functions
Hidden constructors
| DOMLSParser ()

## Detailed Description

DOMLSParser provides an API for parsing XML documents and building the corresponding DOM document tree.

A DOMLSParser instance is obtained from the DOMImplementationLS interface by invoking its createLSParser method.

Since
  DOM Level 3

## Member Enumeration Documentation

## ◆ ActionType

enum DOMLSParser::ActionType

A set of possible actions for the parseWithContext method.

`ACTION_APPEND_AS_CHILDREN`: Append the result of the parse operation as children of the context node. For this action to work, the context node must be a `DOMElement` or a `DOMDocumentFragment`.

`ACTION_INSERT_AFTER`: Insert the result of the parse operation as the immediately following sibling of the context node. For this action to work the context node's parent must be a `DOMElement` or a `DOMDocumentFragment`.

`ACTION_INSERT_BEFORE`: Insert the result of the parse operation as the immediately preceding sibling of the context node. For this action to work the context node's parent must be a `DOMElement` or a `DOMDocumentFragment`.

`ACTION_REPLACE`: Replace the context node with the result of the parse operation. For this action to work, the context node must have a parent, and the parent must be a `DOMElement` or a `DOMDocumentFragment`.

`ACTION_REPLACE_CHILDREN`: Replace all the children of the context node with the result of the parse operation. For this action to work, the context node must be a `DOMElement`, a `DOMDocument`, or a `DOMDocumentFragment`.

See also
  parseWithContext(...)

Since
  DOM Level 3

Enumerator
ACTION_APPEND_AS_CHILDREN |
ACTION_REPLACE_CHILDREN |
ACTION_INSERT_BEFORE |
ACTION_INSERT_AFTER |
ACTION_REPLACE |

## Constructor & Destructor Documentation

## ◆ DOMLSParser()

DOMLSParser::DOMLSParser | ( |  | ) |
| protected

## ◆ ~DOMLSParser()

virtual DOMLSParser::~DOMLSParser | ( |  | ) |
| virtual

Destructor.

## Member Function Documentation

## ◆ abort()

virtual void DOMLSParser::abort | ( |  | ) |
| pure virtual

Abort the loading of the document that is currently being loaded by the `DOMLSParser`.

If the `DOMLSParser` is currently not busy, a call to this method does nothing.

Note: invoking this method will remove the installed `DOMLSParserFilter` filter

Since
  DOM Level 3

## ◆ getAsync()

virtual bool DOMLSParser::getAsync | ( |  | ) | const
| pure virtual

Return whether the parser is asynchronous.

Returns
  `true` if the `DOMLSParser` is asynchronous, `false` if it is synchronous

Since
  DOM Level 3

## ◆ getBusy()

virtual bool DOMLSParser::getBusy | ( |  | ) | const
| pure virtual

Return whether the parser is busy parsing.

Returns
  `true` if the `DOMLSParser` is currently busy loading a document, otherwise `false`.

Since
  DOM Level 3

## ◆ getDomConfig()

virtual DOMConfiguration * DOMLSParser::getDomConfig | ( |  | ) |
| pure virtual

Get a pointer to the `DOMConfiguration` object used when parsing an input source.

This `DOMConfiguration` is specific to the parse operation. No parameter values from this `DOMConfiguration` object are passed automatically to the `DOMConfiguration` object on the `DOMDocument` that is created, or used, by the parse operation. The DOM application is responsible for passing any needed parameter values from this `DOMConfiguration` object to the `DOMConfiguration` object referenced by the `DOMDocument` object.

In addition to the parameters recognized in on the `DOMConfiguration` interface defined in [DOM Level 3 Core], the `DOMConfiguration` objects for `DOMLSParser` add or modify the following parameters:

"charset-overrides-xml-encoding" true [optional] (default) If a higher level protocol such as HTTP [IETF RFC 2616] provides an indication of the character encoding of the input stream being processed, that will override any encoding specified in the XML declaration or the Text declaration (see also section 4.3.3, "Character Encoding in Entities", in [XML 1.0]). Explicitly setting an encoding in the `DOMLSInput` overrides any encoding from the protocol. false [required] The parser ignores any character set encoding information from higher-level protocols.

"disallow-doctype" true Throw a fatal "doctype-not-allowed" error if a doctype node is found while parsing the document. This is useful when dealing with things like SOAP envelopes where doctype nodes are not allowed. false (default) Allow doctype nodes in the document.

"ignore-unknown-character-denormalizations" true [required] (default) If, while verifying full normalization when [XML 1.1] is supported, a processor encounters characters for which it cannot determine the normalization properties, then the processor will ignore any possible denormalizations caused by these characters. This parameter is ignored for [XML 1.0]. false [optional] Report an fatal "unknown-character-denormalization" error if a character is encountered for which the processor cannot determine the normalization properties.

"infoset" See the definition of DOMConfiguration for a description of this parameter. Unlike in [DOM Level 3 Core], this parameter will default to true for DOMLSParser.

"namespaces" true [required] (default) Perform the namespace processing as defined in [XML Namespaces] and [XML Namespaces 1.1]. false [optional] Do not perform the namespace processing.

"resource-resolver" [required] A pointer to a DOMLSResourceResolver object, or NULL. If the value of this parameter is not null when an external resource (such as an external XML entity or an XML schema location) is encountered, the implementation will request that the DOMLSResourceResolver referenced in this parameter resolves the resource.

"supported-media-types-only" true [optional] Check that the media type of the parsed resource is a supported media type. If an unsupported media type is encountered, a fatal error of type "unsupported-media-type" will be raised. The media types defined in [IETF RFC 3023] must always be accepted. false [required] (default) Accept any media type.

"validate" See the definition of `DOMConfiguration` for a description of this parameter. Unlike in [DOM Level 3 Core], the processing of the internal subset is always accomplished, even if this parameter is set to false.

"validate-if-schema" See the definition of `DOMConfiguration` for a description of this parameter. Unlike in [DOM Level 3 Core], the processing of the internal subset is always accomplished, even if this parameter is set to false.

"well-formed" See the definition of `DOMConfiguration` for a description of this parameter. Unlike in [DOM Level 3 Core], this parameter cannot be set to false.

In addition to these, Xerces adds these non standard parameters:

"http://apache.org/xml/properties/entity-resolver" A pointer to a XMLEntityResolver object, or NULL. If the value of this parameter is not null when an external resource (such as an external XML entity or an XML schema location) is encountered, the implementation will request that the XMLEntityResolver referenced in this parameter resolves the resource.

"http://apache.org/xml/properties/schema/external-schemaLocation" A string holding a set of [namespaceUri schemaLocation] entries that will be treated as the content of the attribute xsi:schemaLocation of the root element

"http://apache.org/xml/properties/schema/external-noNamespaceSchemaLocation" A string holding the schemaLocation for the empty namespace URI that will be treated as the content of the attribute xsi:noNamespaceSchemaLocation of the root element

"http://apache.org/xml/properties/security-manager" A pointer to a SecurityManager object that will control how many entity references will be expanded during parsing

"http://apache.org/xml/properties/scannerName" A string holding the type of scanner used while parsing. The valid names are:

- IGXMLScanner: the default one, capable of both XMLSchema and DTD validation
- SGXMLScanner: a scanner that can only perform XMLSchema validation
- DGXMLScanner: a scanner that can only perform DTD validation
- WFXMLScanner: a scanner that cannot perform any type validation, only well-formedness

"http://apache.org/xml/properties/parser-use-DOMDocument-from-Implementation" A string holding the capabilities of the DOM implementation to be used to create the DOMDocument resulting from the parse operation. For instance, "LS" or "Core"

"http://apache.org/xml/features/validation/schema" true Enable XMLSchema validation (note that also namespace processing should be enabled) false (default) Don't perform XMLSchema validation

"http://apache.org/xml/features/validation/schema-full-checking" true Turn on full XMLSchema checking (e.g. Unique Particle Attribution) false (default) Don't perform full XMLSchema checking

"http://apache.org/xml/features/validating/load-schema" true (default) Allow the parser to load schemas that are not in the grammar pool false Schemas that are not in the grammar pool are ignored

"http://apache.org/xml/features/dom/user-adopts-DOMDocument" true The DOMDocument objects returned by `parse` will be owned by the caller false (default) The DOMDocument objects returned by `parse` will be owned by this `DOMLSParser` and deleted when released

"http://apache.org/xml/features/nonvalidating/load-external-dtd" true (default) Allow the parser to load external DTDs false References to external DTDs will be ignored

"http://apache.org/xml/features/continue-after-fatal-error" true Parsing should try to continue even if a fatal error has been triggered, trying to generate a DOM tree from a non well-formed XML false (default) Violation of XML rules will abort parsing

"http://apache.org/xml/features/validation-error-as-fatal" true Validation errors are treated as fatal errors, and abort parsing (unless "continue-after-fatal-error" has been specified) false (default) Validation errors are normal errors

"http://apache.org/xml/features/validation/cache-grammarFromParse" true XMLSchemas referenced by an XML file are cached in order to be reused by other parse operations false (default) XMLSchemas loaded during a parse operation will be discarded before the next one

"http://apache.org/xml/features/validation/use-cachedGrammarInParse" true During this parse operation, reuse the XMLSchemas found in the cache false (default) Don't reuse the XMLSchemas found in the cache

"http://apache.org/xml/features/calculate-src-ofs" true During parsing update the position in the source stream false (default) Don't waste time computing the position in the source stream

"http://apache.org/xml/features/standard-uri-conformant" true Require that every URL being resolved is made of valid URL characters only false (default) Allow invalid URL characters in URL (e.g. spaces)

"http://apache.org/xml/features/dom-has-psvi-info" true Add schema informations to DOMElement and DOMAttr nodes in the output DOM tree false (default) Don't store schema informations in the output DOM tree

"http://apache.org/xml/features/generate-synthetic-annotations" true Create annotation objects in the representation of the loaded XMLSchemas false (default) Discard annotations found in the loaded XMLSchemas

"http://apache.org/xml/features/validate-annotations" true Check that annotations are valid according to their XMLSchema definition false (default) Don't validate annotations

"http://apache.org/xml/features/validation/identity-constraint-checking" true (default) Enforce identity constraints specified in the XMLSchema false Don't enforce identity constraints

"http://apache.org/xml/features/validation/ignoreCachedDTD" true Don't reuse DTDs found in the cache, even if use-cachedGrammarInParse is `true` false (default) Reuse DTDs found in the cache, if use-cachedGrammarInParse is `true`

"http://apache.org/xml/features/schema/ignore-annotations" true Don't process annotations found in an XMLSchema false (default) Process the annotations found in an XMLSchema

"http://apache.org/xml/features/disable-default-entity-resolution" true Entities will be resolved only by a resolver installed by the user false (default) If the entity resolver has not been installed, or it refuses to resolve the given entity, the parser will try to locate it himself

"http://apache.org/xml/features/validation/schema/skip-dtd-validation" true If XMLSchema validation is `true`, DTD validation will not be performed false (default) If a DTD is found, it will be used to validate the XML

Returns
  The pointer to the configuration object.

Since
  DOM Level 3

## ◆ getFilter()

virtual const DOMLSParserFilter * DOMLSParser::getFilter | ( |  | ) | const
| pure virtual

Get a const pointer to the application filter.

This method returns the installed application filter. If no filter has been installed, then it will be a zero pointer.

Returns
  A const pointer to the installed application filter

Since
  DOM Level 3

## ◆ getGrammar()

virtual Grammar * DOMLSParser::getGrammar | ( | const XMLCh *const | nameSpaceKey | ) | const
| pure virtual

Retrieve the grammar that is associated with the specified namespace key.

Parameters

  nameSpaceKey | Namespace key

Returns
  Grammar associated with the Namespace key.

## ◆ getRootGrammar()

virtual Grammar * DOMLSParser::getRootGrammar | ( |  | ) | const
| pure virtual

Retrieve the grammar where the root element is declared.

Returns
  Grammar where root element declared

## ◆ getSrcOffset()

virtual XMLFilePos DOMLSParser::getSrcOffset | ( |  | ) | const
| pure virtual

Returns the current src offset within the input source.

Returns
  offset within the input source

## ◆ getURIText()

virtual const XMLCh * DOMLSParser::getURIText | ( | unsigned int | uriId | ) | const
| pure virtual

Returns the string corresponding to a URI id from the URI string pool.

Parameters

  uriId | id of the string in the URI string pool.

Returns
  URI string corresponding to the URI id.

## ◆ loadGrammar() [1/3]

virtual Grammar * DOMLSParser::loadGrammar | ( | const char *const | systemId,
|  | const Grammar::GrammarType | grammarType,
|  | const bool | toCache = false )
| pure virtual

Preparse schema grammar (XML Schema, DTD, etc.) via a file path or URL.

This method invokes the preparsing process on a schema grammar XML file specified by the file path parameter. If the 'toCache' flag is enabled, the parser will cache the grammars for re-use. If a grammar key is found in the pool, no caching of any grammar will take place.

Parameters

  systemId | A const char pointer to a native string which contains the path to the XML grammar file to be preparsed.
  grammarType | The grammar type (Schema or DTD).
  toCache | If `true`, we cache the preparsed grammar, otherwise, no chaching. Default is `false`.

Returns
  The preparsed schema grammar object (SchemaGrammar or DTDGrammar). That grammar object is owned by the parser.

Exceptions

  SAXException | Any SAX exception, possibly wrapping another exception.
  XMLException | An exception from the parser or client handler code.
  DOMException | A DOM exception as per DOM spec.

## ◆ loadGrammar() [2/3]

virtual Grammar * DOMLSParser::loadGrammar | ( | const DOMLSInput * | source,
|  | const Grammar::GrammarType | grammarType,
|  | const bool | toCache = false )
| pure virtual

Preparse schema grammar (XML Schema, DTD, etc.) via an input source object.

This method invokes the preparsing process on a schema grammar XML file specified by the DOMLSInput parameter. If the 'toCache' flag is enabled, the parser will cache the grammars for re-use. If a grammar key is found in the pool, no caching of any grammar will take place.

Parameters

  source | A const reference to the DOMLSInput object which points to the schema grammar file to be preparsed.
  grammarType | The grammar type (Schema or DTD).
  toCache | If `true`, we cache the preparsed grammar, otherwise, no chaching. Default is `false`.

Returns
  The preparsed schema grammar object (SchemaGrammar or DTDGrammar). That grammar object is owned by the parser.

Exceptions

  SAXException | Any SAX exception, possibly wrapping another exception.
  XMLException | An exception from the parser or client handler code.
  DOMException | A DOM exception as per DOM spec.

See also
  DOMLSInput::DOMLSInput

## ◆ loadGrammar() [3/3]

virtual Grammar * DOMLSParser::loadGrammar | ( | const XMLCh *const | systemId,
|  | const Grammar::GrammarType | grammarType,
|  | const bool | toCache = false )
| pure virtual

Preparse schema grammar (XML Schema, DTD, etc.) via a file path or URL.

This method invokes the preparsing process on a schema grammar XML file specified by the file path parameter. If the 'toCache' flag is enabled, the parser will cache the grammars for re-use. If a grammar key is found in the pool, no caching of any grammar will take place.

Parameters

  systemId | A const XMLCh pointer to the Unicode string which contains the path to the XML grammar file to be preparsed.
  grammarType | The grammar type (Schema or DTD).
  toCache | If `true`, we cache the preparsed grammar, otherwise, no chaching. Default is `false`.

Returns
  The preparsed schema grammar object (SchemaGrammar or DTDGrammar). That grammar object is owned by the parser.

Exceptions

  SAXException | Any SAX exception, possibly wrapping another exception.
  XMLException | An exception from the parser or client handler code.
  DOMException | A DOM exception as per DOM spec.

## ◆ parse()

virtual DOMDocument * DOMLSParser::parse | ( | const DOMLSInput * | source | ) |
| pure virtual

Parse an XML document from a resource identified by a `DOMLSInput`.

The parser owns the returned DOMDocument. It will be deleted when the parser is released.

Parameters

  source | The `DOMLSInput` from which the source of the document is to be read.

Returns
  If the `DOMLSParser` is a synchronous `DOMLSParser` the newly created and populated `DOMDocument` is returned. If the `DOMLSParser` is asynchronous then `NULL` is returned since the document object may not yet be constructed when this method returns.

Exceptions

  DOMException | INVALID_STATE_ERR: Raised if the `DOMLSParser::busy` attribute is true.
  DOMLSException | PARSE_ERR: Starting from Xerces-C++ 4.0.0 this exception is raised if the `DOMLSParser` was unable to load the XML document. DOM applications should attach a `DOMErrorHandler` using the parameter "error-handler" if they wish to get details on the error.

See also
  DOMLSInput::DOMLSInput
  DOMConfiguration
  resetDocumentPool

Since
  DOM Level 3

## ◆ parseURI() [1/2]

virtual DOMDocument * DOMLSParser::parseURI | ( | const char *const | uri | ) |
| pure virtual

Parse an XML document from a location identified by a URI reference [IETF RFC 2396].

If the URI contains a fragment identifier (see section 4.1 in [IETF RFC 2396]), the behavior is not defined by this specification, future versions of this specification may define the behavior.

The parser owns the returned DOMDocument. It will be deleted when the parser is released.

Parameters

  uri | The location of the XML document to be read (in the local code page)

Returns
  If the `DOMLSParser` is a synchronous `DOMLSParser` the newly created and populated `DOMDocument` is returned. If the `DOMLSParser` is asynchronous then `NULL` is returned since the document object is not yet parsed when this method returns.

Exceptions

  DOMException | INVALID_STATE_ERR: Raised if the `DOMLSParser::busy` attribute is true.
  DOMLSException | PARSE_ERR: Starting from Xerces-C++ 4.0.0 this exception is raised if the `DOMLSParser` was unable to load the XML document. DOM applications should attach a `DOMErrorHandler` using the parameter "error-handler" if they wish to get details on the error.

See also
  #parse(DOMLSInput,...)
  resetDocumentPool

Since
  DOM Level 3

## ◆ parseURI() [2/2]

virtual DOMDocument * DOMLSParser::parseURI | ( | const XMLCh *const | uri | ) |
| pure virtual

Parse an XML document from a location identified by a URI reference [IETF RFC 2396].

If the URI contains a fragment identifier (see section 4.1 in [IETF RFC 2396]), the behavior is not defined by this specification, future versions of this specification may define the behavior.

The parser owns the returned DOMDocument. It will be deleted when the parser is released.

Parameters

  uri | The location of the XML document to be read (in Unicode)

Returns
  If the `DOMLSParser` is a synchronous `DOMLSParser` the newly created and populated `DOMDocument` is returned. If the `DOMLSParser` is asynchronous then `NULL` is returned since the document object is not yet parsed when this method returns.

Exceptions

  DOMException | INVALID_STATE_ERR: Raised if the `DOMLSParser::busy` attribute is true.
  DOMLSException | PARSE_ERR: Starting from Xerces-C++ 4.0.0 this exception is raised if the `DOMLSParser` was unable to load the XML document. DOM applications should attach a `DOMErrorHandler` using the parameter "error-handler" if they wish to get details on the error.

See also
  #parse(DOMLSInput,...)
  resetDocumentPool

Since
  DOM Level 3

## ◆ parseWithContext()

virtual DOMNode * DOMLSParser::parseWithContext | ( | const DOMLSInput * | source,
|  | DOMNode * | contextNode,
|  | const ActionType | action )
| pure virtual

Parse an XML fragment from a resource identified by a `DOMLSInput` and insert the content into an existing document at the position specified with the context and action arguments.

When parsing the input stream, the context node (or its parent, depending on where the result will be inserted) is used for resolving unbound namespace prefixes. The context node's `ownerDocument` node (or the node itself if the node of type `DOCUMENT_NODE`) is used to resolve default attributes and entity references. As the new data is inserted into the document, at least one mutation event is fired per new immediate child or sibling of the context node. If the context node is a `DOMDocument` node and the action is `ACTION_REPLACE_CHILDREN`, then the document that is passed as the context node will be changed such that its `xmlEncoding`, `documentURI`, `xmlVersion`, `inputEncoding`, `xmlStandalone`, and all other such attributes are set to what they would be set to if the input source was parsed using `DOMLSParser::parse()`. This method is always synchronous, even if the `DOMLSParser` is asynchronous (`DOMLSParser::getAsync()` returns true). If an error occurs while parsing, the caller is notified through the `ErrorHandler` instance associated with the "error-handler" parameter of the `DOMConfiguration`. When calling `parseWithContext`, the values of the following configuration parameters will be ignored and their default values will always be used instead: "validate", "validate-if-schema" "element-content-whitespace". Other parameters will be treated normally, and the parser is expected to call the `DOMLSParserFilter` just as if a whole document was parsed.

Parameters

  source | The `DOMLSInput` from which the source document is to be read. The source document must be an XML fragment, i.e. anything except a complete XML document (except in the case where the context node of type `DOCUMENT_NODE`, and the action is `ACTION_REPLACE_CHILDREN`), a `DOCTYPE` (internal subset), entity declaration(s), notation declaration(s), or XML or text declaration(s).
  contextNode | The node that is used as the context for the data that is being parsed. This node must be a `DOMDocument` node, a `DOMDocumentFragment` node, or a node of a type that is allowed as a child of an `DOMElement` node, e.g. it cannot be an `DOMAttribute` node.
  action | This parameter describes which action should be taken between the new set of nodes being inserted and the existing children of the context node. The set of possible actions is defined in `ACTION_TYPES` above.

Returns
  Return the node that is the result of the parse operation. If the result is more than one top-level node, the first one is returned.

Exceptions

  DOMException | HIERARCHY_REQUEST_ERR: Raised if the content cannot replace, be inserted before, after, or as a child of the context node (see also `DOMNode::insertBefore` or `DOMNode::replaceChild` in [DOM Level 3 Core]). NOT_SUPPORTED_ERR: Raised if the `DOMLSParser` doesn't support this method, or if the context node is of type `DOMDocument` and the DOM implementation doesn't support the replacement of the `DOMDocumentType` child or `DOMElement` child. NO_MODIFICATION_ALLOWED_ERR: Raised if the context node is a read only node and the content is being appended to its child list, or if the parent node of the context node is read only node and the content is being inserted in its child list. INVALID_STATE_ERR: Raised if the `DOMLSParser::getBusy()` returns true.
  DOMLSException | PARSE_ERR: Raised if the `DOMLSParser` was unable to load the XML fragment. DOM applications should attach a `DOMErrorHandler` using the parameter "error-handler" if they wish to get details on the error.

Since
  DOM Level 3

## ◆ release()

virtual void DOMLSParser::release | ( |  | ) |
| pure virtual

Called to indicate that this DOMLSParser is no longer in use and that the implementation may relinquish any resources associated with it.

Access to a released object will lead to unexpected result.

## ◆ resetCachedGrammarPool()

virtual void DOMLSParser::resetCachedGrammarPool | ( |  | ) |
| pure virtual

Clear the cached grammar pool.

## ◆ resetDocumentPool()

virtual void DOMLSParser::resetDocumentPool | ( |  | ) |
| pure virtual

Reset the documents vector pool and release all the associated memory back to the system.

When parsing a document using a DOM parser, all memory allocated for a DOM tree is associated to the DOM document.

If you do multiple parse using the same DOM parser instance, then multiple DOM documents will be generated and saved in a vector pool. All these documents (and thus all the allocated memory) won't be deleted until the parser instance is destroyed.

If you don't need these DOM documents anymore and don't want to destroy the DOM parser instance at this moment, then you can call this method to reset the document vector pool and release all the allocated memory back to the system.

It is an error to call this method if you are in the middle of a parse (e.g. in the mid of a progressive parse).

Exceptions

  IOException | An exception from the parser if this function is called when a parse is in progress.

## ◆ setFilter()

virtual void DOMLSParser::setFilter | ( | DOMLSParserFilter *const | filter | ) |
| pure virtual

Set the application filter.

When the application provides a filter, the parser will call out to the filter at the completion of the construction of each `DOMElement` node. The filter implementation can choose to remove the element from the document being constructed or to terminate the parse early. The filter is invoked after the operations requested by the DOMConfiguration parameters have been applied. For example, if "validate" is set to true, the validation is done before invoking the filter.

Any previously set filter is merely dropped, since the parser does not own them.

Parameters

  filter | A const pointer to the user supplied application filter.

See also
  getFilter

Since
  DOM Level 3

The documentation for this class was generated from the following file:

- DOMLSParser.hpp