下面列出了javax.xml.stream.events.XMLEvent#CHARACTERS 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。
public static TransientSecurityIndex fromXml(String contingencyId, XMLStreamReader xmlsr) throws XMLStreamException {
String text = null;
while (xmlsr.hasNext()) {
int eventType = xmlsr.next();
switch (eventType) {
case XMLEvent.CHARACTERS:
text = xmlsr.getText();
break;
case XMLEvent.END_ELEMENT:
if ("j".equals(xmlsr.getLocalName())) {
return new TransientSecurityIndex(contingencyId, Double.parseDouble(text));
}
break;
default:
break;
}
}
throw new AssertionError("j element not found");
}
/**
* Return true if the current event has text, false otherwise The following
* events have text: CHARACTERS,DTD ,ENTITY_REFERENCE, COMMENT
*/
public boolean hasText() {
if (DEBUG) {
pr("XMLReaderImpl#EVENT TYPE = " + fEventType);
}
if (fEventType == XMLEvent.CHARACTERS || fEventType == XMLEvent.COMMENT
|| fEventType == XMLEvent.CDATA) {
return fScanner.getCharacterData().length > 0;
} else if (fEventType == XMLEvent.ENTITY_REFERENCE) {
String name = fScanner.getEntityName();
if (name != null) {
if (fScanner.foundBuiltInRefs) {
return true;
}
XMLEntityStorage entityStore = fEntityManager.getEntityStore();
Entity en = entityStore.getEntity(name);
if (en == null) {
return false;
}
if (en.isExternal()) {
return ((Entity.ExternalEntity) en).entityLocation.getExpandedSystemId() != null;
} else {
return ((Entity.InternalEntity) en).text != null;
}
} else {
return false;
}
} else if (fEventType == XMLEvent.DTD) {
return fScanner.fSeenDoctypeDecl;
}
return false;
}
/**
* @return
*/
public boolean hasValue() {
if(fEventType == XMLEvent.START_ELEMENT || fEventType == XMLEvent.END_ELEMENT
|| fEventType == XMLEvent.ENTITY_REFERENCE || fEventType == XMLEvent.PROCESSING_INSTRUCTION
|| fEventType == XMLEvent.COMMENT || fEventType == XMLEvent.CHARACTERS) {
return true;
} else {
return false;
}
}
/**
* @return
*/
public int getTextLength() {
if( fEventType == XMLEvent.CHARACTERS || fEventType == XMLEvent.COMMENT
|| fEventType == XMLEvent.CDATA || fEventType == XMLEvent.SPACE){
return fScanner.getCharacterData().length;
} else{
throw new IllegalStateException("Current state = " + getEventTypeString(fEventType)
+ " is not among the states " + getEventTypeString(XMLEvent.CHARACTERS) + " , "
+ getEventTypeString(XMLEvent.COMMENT) + " , " + getEventTypeString(XMLEvent.CDATA)
+ " , " + getEventTypeString(XMLEvent.SPACE) +" valid for getTextLength() " ) ;
}
}
/** Return true if the current event has text, false otherwise
* The following events have text:
* CHARACTERS,DTD ,ENTITY_REFERENCE, COMMENT
*/
public boolean hasText() {
if(DEBUG) pr("XMLReaderImpl#EVENT TYPE = " + fEventType ) ;
if( fEventType == XMLEvent.CHARACTERS || fEventType == XMLEvent.COMMENT || fEventType == XMLEvent.CDATA) {
return fScanner.getCharacterData().length > 0 ? true : false;
} else if(fEventType == XMLEvent.ENTITY_REFERENCE) {
String name = fScanner.getEntityName();
if(name != null){
if(fScanner.foundBuiltInRefs)
return true;
XMLEntityStorage entityStore = fEntityManager.getEntityStore();
Entity en = entityStore.getEntity(name);
if(en == null)
return false;
if(en.isExternal()){
return ((Entity.ExternalEntity)en).entityLocation.getExpandedSystemId() != null ? true : false;
} else{
return ((Entity.InternalEntity)en).text != null ? true : false ;
}
}else
return false;
} else {
if(fEventType == XMLEvent.DTD)
return fScanner.fSeenDoctypeDecl;
}
return false;
}
/**
* @return
*/
public String getValue() {
if(fEventType == XMLEvent.PROCESSING_INSTRUCTION){
return fScanner.getPIData().toString();
} else if(fEventType == XMLEvent.COMMENT){
return fScanner.getComment();
} else if(fEventType == XMLEvent.START_ELEMENT || fEventType == XMLEvent.END_ELEMENT){
return fScanner.getElementQName().localpart ;
} else if(fEventType == XMLEvent.CHARACTERS){
return fScanner.getCharacterData().toString();
}
return null;
}
public static TsoOverloadSecurityIndex fromXml(String contingencyId, XMLStreamReader xmlsr) throws XMLStreamException {
String text = null;
int overloadCount = -1;
List<String> overloadedBranches = new ArrayList<>();
boolean computationSucceed = true;
while (xmlsr.hasNext()) {
int eventType = xmlsr.next();
switch (eventType) {
case XMLEvent.CHARACTERS:
text = xmlsr.getText();
break;
case XMLEvent.END_ELEMENT:
switch (xmlsr.getLocalName()) {
case "overload-count":
overloadCount = Integer.parseInt(text);
break;
case "overloaded-branch":
overloadedBranches.add(text);
break;
case "computation-succeed":
computationSucceed = Boolean.parseBoolean(text);
break;
case "index":
return new TsoOverloadSecurityIndex(contingencyId, overloadCount, overloadedBranches, computationSucceed);
default:
break;
}
break;
default:
break;
}
}
throw new AssertionError("index element not found");
}
/**
* @return
*/
public char[] getTextCharacters() {
if( fEventType == XMLEvent.CHARACTERS || fEventType == XMLEvent.COMMENT
|| fEventType == XMLEvent.CDATA || fEventType == XMLEvent.SPACE){
return fScanner.getCharacterData().ch;
} else{
throw new IllegalStateException("Current state = " + getEventTypeString(fEventType)
+ " is not among the states " + getEventTypeString(XMLEvent.CHARACTERS) + " , "
+ getEventTypeString(XMLEvent.COMMENT) + " , " + getEventTypeString(XMLEvent.CDATA)
+ " , " + getEventTypeString(XMLEvent.SPACE) +" valid for getTextCharacters() " ) ;
}
}
/** Returns true if the cursor points to a character data event
* @return true if the cursor points to character data, false otherwise
*/
public boolean isCharacters() {
return fEventType == XMLEvent.CHARACTERS ;
}
public boolean isCharacterData() {
return fEventType == XMLEvent.CHARACTERS;
}
/** Returns true if the cursor points to a character data event
* @return true if the cursor points to character data, false otherwise
*/
public boolean isCharacters() {
return fEventType == XMLEvent.CHARACTERS ;
}
public boolean isCharacterData() {
return fEventType == XMLEvent.CHARACTERS;
}
XMLEvent getXMLEvent(XMLStreamReader reader){
XMLEvent event = null;
//returns the current event
int eventType = reader.getEventType();
//this needs to be set before creating events
factory.setLocation(reader.getLocation());
switch(eventType){
case XMLEvent.START_ELEMENT:
{
StartElementEvent startElement = (StartElementEvent)factory.createStartElement(reader.getPrefix(),
reader.getNamespaceURI(), reader.getLocalName());
addAttributes(startElement,reader);
addNamespaces(startElement, reader);
//need to fix it along with the Reader
//setNamespaceContext(startElement,reader);
event = startElement;
break;
}
case XMLEvent.END_ELEMENT:
{
EndElementEvent endElement = (EndElementEvent)factory.createEndElement(
reader.getPrefix(), reader.getNamespaceURI(), reader.getLocalName());
addNamespaces(endElement,reader);
event = endElement ;
break;
}
case XMLEvent.PROCESSING_INSTRUCTION:
{
event = factory.createProcessingInstruction(reader.getPITarget(),reader.getPIData());
break;
}
case XMLEvent.CHARACTERS:
{
if (reader.isWhiteSpace())
event = factory.createSpace(reader.getText());
else
event = factory.createCharacters(reader.getText());
break;
}
case XMLEvent.COMMENT:
{
event = factory.createComment(reader.getText());
break;
}
case XMLEvent.START_DOCUMENT:
{
StartDocumentEvent docEvent = (StartDocumentEvent)factory.createStartDocument(
reader.getVersion(), reader.getEncoding(), reader.isStandalone());
if(reader.getCharacterEncodingScheme() != null){
docEvent.setDeclaredEncoding(true);
}else{
docEvent.setDeclaredEncoding(false);
}
event = docEvent ;
break;
}
case XMLEvent.END_DOCUMENT:{
EndDocumentEvent endDocumentEvent = new EndDocumentEvent() ;
event = endDocumentEvent ;
break;
}
case XMLEvent.ENTITY_REFERENCE:{
event = factory.createEntityReference(reader.getLocalName(),
new EntityDeclarationImpl(reader.getLocalName(),reader.getText()));
break;
}
case XMLEvent.ATTRIBUTE:{
event = null ;
break;
}
case XMLEvent.DTD:{
event = factory.createDTD(reader.getText());
break;
}
case XMLEvent.CDATA:{
event = factory.createCData(reader.getText());
break;
}
case XMLEvent.SPACE:{
event = factory.createSpace(reader.getText());
break;
}
}
return event ;
}
public static MultiCriteriaVoltageStabilityIndex fromXml(String contingencyId, XMLStreamReader xmlsr) throws XMLStreamException {
String text = null;
Map<String, Float> lockedTapChangerLoads = new LinkedHashMap<>();
Map<String, Float> stoppedTapChangerLoads = new LinkedHashMap<>();
Map<String, Float> underVoltageAutomatonGenerators = new LinkedHashMap<>();
Set<String> underVoltageBuses = new LinkedHashSet<>();
String id = null;
while (xmlsr.hasNext()) {
int eventType = xmlsr.next();
switch (eventType) {
case XMLEvent.CHARACTERS:
text = xmlsr.getText();
break;
case XMLEvent.START_ELEMENT:
switch (xmlsr.getLocalName()) {
case TAG_LOCKED_TAP_CHANGER_LOAD:
case TAG_STOPPED_TAP_CHANGER_LOAD:
case TAG_UNDER_VOLTAGE_AUTOMATON_GENERATOR:
id = xmlsr.getAttributeValue(null, TAG_ID);
break;
case TAG_UNDER_BUS_VOLTAGE:
case TAG_INDEX:
// nothing to do
break;
default:
throw new AssertionError("Unexpected element: " + xmlsr.getLocalName());
}
break;
case XMLEvent.END_ELEMENT:
switch (xmlsr.getLocalName()) {
case TAG_LOCKED_TAP_CHANGER_LOAD:
assertIdNonNull(id);
lockedTapChangerLoads.put(id, Float.parseFloat(text));
id = null;
break;
case TAG_STOPPED_TAP_CHANGER_LOAD:
assertIdNonNull(id);
stoppedTapChangerLoads.put(id, Float.parseFloat(text));
id = null;
break;
case TAG_UNDER_VOLTAGE_AUTOMATON_GENERATOR:
assertIdNonNull(id);
underVoltageAutomatonGenerators.put(id, Float.parseFloat(text));
id = null;
break;
case TAG_UNDER_BUS_VOLTAGE:
underVoltageBuses.add(text);
break;
case TAG_INDEX:
return new MultiCriteriaVoltageStabilityIndex(contingencyId, lockedTapChangerLoads, stoppedTapChangerLoads,
underVoltageAutomatonGenerators, underVoltageBuses);
default:
throw new AssertionError("Unexpected element: " + xmlsr.getLocalName());
}
break;
default:
break;
}
}
throw new AssertionError("Should not happen");
}
/** Returns the current value of the parse event as a string,
* this returns the string value of a CHARACTERS event,
* returns the value of a COMMENT, the replacement value
* for an ENTITY_REFERENCE,
* or the String value of the DTD
* @return the current text or null
* @throws java.lang.IllegalStateException if this state is not
* a valid text state.
*/
public String getText() {
if( fEventType == XMLEvent.CHARACTERS || fEventType == XMLEvent.COMMENT
|| fEventType == XMLEvent.CDATA || fEventType == XMLEvent.SPACE){
//this requires creation of new string
//fEventType == XMLEvent.ENTITY_REFERENCE
return fScanner.getCharacterData().toString() ;
} else if(fEventType == XMLEvent.ENTITY_REFERENCE){
String name = fScanner.getEntityName();
if(name != null){
if(fScanner.foundBuiltInRefs)
return fScanner.getCharacterData().toString();
XMLEntityStorage entityStore = fEntityManager.getEntityStore();
Entity en = entityStore.getEntity(name);
if(en == null)
return null;
if(en.isExternal())
return ((Entity.ExternalEntity)en).entityLocation.getExpandedSystemId();
else
return ((Entity.InternalEntity)en).text;
}else
return null;
}
else if(fEventType == XMLEvent.DTD){
if(fDTDDecl != null){
return fDTDDecl;
}
XMLStringBuffer tmpBuffer = fScanner.getDTDDecl();
fDTDDecl = tmpBuffer.toString();
return fDTDDecl;
} else{
throw new IllegalStateException("Current state " + getEventTypeString(fEventType)
+ " is not among the states" + getEventTypeString(XMLEvent.CHARACTERS) + ", "
+ getEventTypeString(XMLEvent.COMMENT) + ", "
+ getEventTypeString(XMLEvent.CDATA) + ", "
+ getEventTypeString(XMLEvent.SPACE) + ", "
+ getEventTypeString(XMLEvent.ENTITY_REFERENCE) + ", "
+ getEventTypeString(XMLEvent.DTD) + " valid for getText() " ) ;
}
}
/** Reads the content of a text-only element. Precondition:
* the current event is START_ELEMENT. Postcondition:
* The current event is the corresponding END_ELEMENT.
* @throws XMLStreamException if the current event is not a START_ELEMENT
* or if a non text element is encountered
*/
public String getElementText() throws XMLStreamException {
//we have to keep reference to the 'last event' of the stream to be able
//to make this check - is there another way ? - nb.
if(fLastEvent.getEventType() != XMLEvent.START_ELEMENT){
throw new XMLStreamException(
"parser must be on START_ELEMENT to read next text", fLastEvent.getLocation());
}
// STag content ETag
//[43] content ::= CharData? ((element | Reference | CDSect | PI | Comment) CharData?)*
//<foo>....some long text say in KB and underlying parser reports multiple character
// but getElementText() events....</foo>
String data = null;
//having a peeked event makes things really worse -- we have to test the first event
if(fPeekedEvent != null){
XMLEvent event = fPeekedEvent ;
fPeekedEvent = null;
int type = event.getEventType();
if( type == XMLEvent.CHARACTERS || type == XMLEvent.SPACE ||
type == XMLEvent.CDATA){
data = event.asCharacters().getData();
}
else if(type == XMLEvent.ENTITY_REFERENCE){
data = ((EntityReference)event).getDeclaration().getReplacementText();
}
else if(type == XMLEvent.COMMENT || type == XMLEvent.PROCESSING_INSTRUCTION){
//ignore
} else if(type == XMLEvent.START_ELEMENT) {
throw new XMLStreamException(
"elementGetText() function expects text only elment but START_ELEMENT was encountered.", event.getLocation());
}else if(type == XMLEvent.END_ELEMENT){
return "";
}
//create the string buffer and add initial data
StringBuffer buffer = new StringBuffer();
if(data != null && data.length() > 0 ) {
buffer.append(data);
}
//get the next event -- we should stop at END_ELEMENT but it can be any thing
//things are worse when implementing this function in XMLEventReader because
//there isn't any function called getText() which can get values for
//space, cdata, characters and entity reference
//nextEvent() would also set the last event.
event = nextEvent();
while(event.getEventType() != XMLEvent.END_ELEMENT){
if( type == XMLEvent.CHARACTERS || type == XMLEvent.SPACE ||
type == XMLEvent.CDATA){
data = event.asCharacters().getData();
}
else if(type == XMLEvent.ENTITY_REFERENCE){
data = ((EntityReference)event).getDeclaration().getReplacementText();
}
else if(type == XMLEvent.COMMENT || type == XMLEvent.PROCESSING_INSTRUCTION){
//ignore
} else if(type == XMLEvent.END_DOCUMENT) {
throw new XMLStreamException("unexpected end of document when reading element text content");
} else if(type == XMLEvent.START_ELEMENT) {
throw new XMLStreamException(
"elementGetText() function expects text only elment but START_ELEMENT was encountered.", event.getLocation());
} else {
throw new XMLStreamException(
"Unexpected event type "+ type, event.getLocation());
}
//add the data to the buffer
if(data != null && data.length() > 0 ) {
buffer.append(data);
}
event = nextEvent();
}
return buffer.toString();
}//if (fPeekedEvent != null)
//if there was no peeked, delegate everything to fXMLReader
//update the last event before returning the text
data = fXMLReader.getElementText();
fLastEvent = fXMLEventAllocator.allocate(fXMLReader);
return data;
}
/** A utility function to check if this event is Characters.
* @see Characters
*/
public boolean isCharacters() {
return fEventType == XMLEvent.CHARACTERS;
}
/** Reads the content of a text-only element. Precondition:
* the current event is START_ELEMENT. Postcondition:
* The current event is the corresponding END_ELEMENT.
* @throws XMLStreamException if the current event is not a START_ELEMENT
* or if a non text element is encountered
*/
public String getElementText() throws XMLStreamException {
//we have to keep reference to the 'last event' of the stream to be able
//to make this check - is there another way ? - nb.
if(fLastEvent.getEventType() != XMLEvent.START_ELEMENT){
throw new XMLStreamException(
"parser must be on START_ELEMENT to read next text", fLastEvent.getLocation());
}
// STag content ETag
//[43] content ::= CharData? ((element | Reference | CDSect | PI | Comment) CharData?)*
//<foo>....some long text say in KB and underlying parser reports multiple character
// but getElementText() events....</foo>
String data = null;
//having a peeked event makes things really worse -- we have to test the first event
if(fPeekedEvent != null){
XMLEvent event = fPeekedEvent ;
fPeekedEvent = null;
int type = event.getEventType();
if( type == XMLEvent.CHARACTERS || type == XMLEvent.SPACE ||
type == XMLEvent.CDATA){
data = event.asCharacters().getData();
}
else if(type == XMLEvent.ENTITY_REFERENCE){
data = ((EntityReference)event).getDeclaration().getReplacementText();
}
else if(type == XMLEvent.COMMENT || type == XMLEvent.PROCESSING_INSTRUCTION){
//ignore
} else if(type == XMLEvent.START_ELEMENT) {
throw new XMLStreamException(
"elementGetText() function expects text only elment but START_ELEMENT was encountered.", event.getLocation());
}else if(type == XMLEvent.END_ELEMENT){
return "";
}
//create the string buffer and add initial data
StringBuffer buffer = new StringBuffer();
if(data != null && data.length() > 0 ) {
buffer.append(data);
}
//get the next event -- we should stop at END_ELEMENT but it can be any thing
//things are worse when implementing this function in XMLEventReader because
//there isn't any function called getText() which can get values for
//space, cdata, characters and entity reference
//nextEvent() would also set the last event.
event = nextEvent();
while(event.getEventType() != XMLEvent.END_ELEMENT){
if( type == XMLEvent.CHARACTERS || type == XMLEvent.SPACE ||
type == XMLEvent.CDATA){
data = event.asCharacters().getData();
}
else if(type == XMLEvent.ENTITY_REFERENCE){
data = ((EntityReference)event).getDeclaration().getReplacementText();
}
else if(type == XMLEvent.COMMENT || type == XMLEvent.PROCESSING_INSTRUCTION){
//ignore
} else if(type == XMLEvent.END_DOCUMENT) {
throw new XMLStreamException("unexpected end of document when reading element text content");
} else if(type == XMLEvent.START_ELEMENT) {
throw new XMLStreamException(
"elementGetText() function expects text only elment but START_ELEMENT was encountered.", event.getLocation());
} else {
throw new XMLStreamException(
"Unexpected event type "+ type, event.getLocation());
}
//add the data to the buffer
if(data != null && data.length() > 0 ) {
buffer.append(data);
}
event = nextEvent();
}
return buffer.toString();
}//if (fPeekedEvent != null)
//if there was no peeked, delegate everything to fXMLReader
//update the last event before returning the text
data = fXMLReader.getElementText();
fLastEvent = fXMLEventAllocator.allocate(fXMLReader);
return data;
}
/** Returns true if the cursor points to a character data event
* @return true if the cursor points to character data, false otherwise
*/
public boolean isCharacters() {
return fEventType == XMLEvent.CHARACTERS ;
}
/**
* Compares two {@link XMLEvent} instances. This method delegates actual
* matching to the appropriate overloaded method.
*
* @param a
* The first event.
* @param b
* The second event.
* @return <code>true</code> if the events match, <code>false</code>
* otherwise.
*/
public static boolean eventsMatch(XMLEvent a, XMLEvent b) {
if (a == b) {
return true;
} else if (a == null || b == null) {
return false;
} else if (a.getEventType() == b.getEventType()) {
switch (a.getEventType()) {
case XMLEvent.START_ELEMENT:
return eventsMatch(a.asStartElement(), b.asStartElement());
case XMLEvent.END_ELEMENT:
return eventsMatch(a.asEndElement(), b.asEndElement());
case XMLEvent.CDATA:
case XMLEvent.SPACE:
case XMLEvent.CHARACTERS:
return eventsMatch(a.asCharacters(), b.asCharacters());
case XMLEvent.COMMENT:
return eventsMatch((Comment) a, (Comment) b);
case XMLEvent.ENTITY_REFERENCE:
return eventsMatch((EntityReference) a, (EntityReference) b);
case XMLEvent.ATTRIBUTE:
return eventsMatch((Attribute) a, (Attribute) b);
case XMLEvent.NAMESPACE:
return eventsMatch((Namespace) a, (Namespace) b);
case XMLEvent.START_DOCUMENT:
return eventsMatch((StartDocument) a, (StartDocument) b);
case XMLEvent.END_DOCUMENT:
return eventsMatch((EndDocument) a, (EndDocument) b);
case XMLEvent.PROCESSING_INSTRUCTION:
return eventsMatch((ProcessingInstruction) a, (ProcessingInstruction) b);
case XMLEvent.DTD:
return eventsMatch((DTD) a, (DTD) b);
case XMLEvent.ENTITY_DECLARATION:
return eventsMatch((EntityDeclaration) a, (EntityDeclaration) b);
case XMLEvent.NOTATION_DECLARATION:
return eventsMatch((NotationDeclaration) a, (NotationDeclaration) b);
}
}
return false;
}