程序包 net.apexes.commons.xml

类 XmlElement

java.lang.Object

net.apexes.commons.xml.XmlElement

直接已知子类:

Xml

public class XmlElement
extends Object

XmlElement is a representation of an XML object. The object is able to parse XML code.

版本:

$Name: RELEASE_2_2_1 $, $Revision: 1.5 $

作者:

Marc De Scheemaecker <cyberelf@mac.com>

构造器概要

构造器

限定符	构造器	说明
	XmlElement()	Creates and initializes a new XML element.
	XmlElement(boolean skipLeadingWhitespace)	Creates and initializes a new XML element.
	XmlElement(Map<String,char[]> entities)	Creates and initializes a new XML element.
	XmlElement(Map<String,char[]> entities, boolean skipLeadingWhitespace)	Creates and initializes a new XML element.
protected	XmlElement(Map<String,char[]> entities, boolean skipLeadingWhitespace, boolean fillBasicConversionTable)	Creates and initializes a new XML element.

方法概要

修饰符和类型	方法	说明
void	addChild(XmlElement child)	Adds a child element.
protected boolean	checkCDATA(StringBuilder buf)	Scans a special tag and if the tag is a CDATA section, append its content to buf.
protected boolean	checkLiteral(String literal)	Scans the data for literal text.
protected XmlElement	createAnotherElement()	Creates a new similar XML element.
protected XmlParseException	expectedInput(String charSet)	Creates a parse exception for when the next character read is not the character that was expected.
Object	getAttribute(String name)	Returns an attribute of the element.
Object	getAttribute(String name, Object defaultValue)	Returns an attribute of the element.
Set<String>	getAttributeNames()	Get the attribute names.
boolean	getBooleanAttribute(String name, String trueValue, String falseValue, boolean defaultValue)	Returns an attribute of the element.
XmlElement	getChild(int index)
XmlElement	getChild(String name)
String	getChildContent(String name)
List<XmlElement>	getChildren()	Returns the child elements as a List.
List<XmlElement>	getChildren(String name)
int	getChildrenCount()	Returns the number of child elements of the element.
String	getContent()	Returns the PCDATA content of the object.
double	getDoubleAttribute(String name)	Returns an attribute of the element.
double	getDoubleAttribute(String name, double defaultValue)	Returns an attribute of the element.
int	getIntAttribute(String name)	Returns an attribute of the element.
int	getIntAttribute(String name, int defaultValue)	Returns an attribute of the element.
int	getLineNr()	Returns the line nr in the source data on which the element is found.
long	getLongAttribute(String name)	Returns an attribute of the element.
long	getLongAttribute(String name, long defaultValue)	Returns an attribute of the element.
String	getName()	Returns the name of the element.
XmlElement	getParent()	Returns the parent of the element.
String	getStringAttribute(String name)	Returns an attribute of the element.
String	getStringAttribute(String name, String defaultValue)	Returns an attribute of the element.
boolean	hasAttribute(String name)	Returns true if this element contains a attribute for the specified name.
protected XmlParseException	invalidValue(String name, String value)	Creates a parse exception for when an invalid value is given to a method.
protected XmlParseException	invalidValueSet(String name)	Creates a parse exception for when an invalid valueset is given to a method.
boolean	isIgnoreWhitespace()
void	parseCharArray(char[] input, int offset, int end)	Reads one XML element from a char array and parses it.
void	parseCharArray(char[] input, int offset, int end, int startingLineNr)	Reads one XML element from a char array and parses it.
void	parseFromReader(Reader reader)	Reads one XML element from a java.io.Reader and parses it.
void	parseFromReader(Reader reader, int startingLineNr)	Reads one XML element from a java.io.Reader and parses it.
void	parseString(String string)	Reads one XML element from a String and parses it.
void	parseString(String string, int offset)	Reads one XML element from a String and parses it.
void	parseString(String string, int offset, int end)	Reads one XML element from a String and parses it.
void	parseString(String string, int offset, int end, int startingLineNr)	Reads one XML element from a String and parses it.
protected char	readChar()	Reads a character from a reader.
void	removeAttribute(String name)	Removes an attribute.
void	removeChild(XmlElement child)	Removes a child element.
protected void	resolveEntity(StringBuilder buf)	Resolves an entity.
protected void	scanElement(XmlElement elt)	Scans an XML element.
protected void	scanIdentifier(StringBuilder result)	Scans an identifier from the current reader.
protected boolean	scanPCData(StringBuilder buf)	Scans a #PCDATA element.
protected void	scanString(StringBuilder buf)	This method scans a delimited string from the current reader.
protected char	scanWhitespace()	This method scans an identifier from the current reader.
protected char	scanWhitespace(StringBuilder buf)	This method scans an identifier from the current reader.
void	setAttribute(String name, Object value)	Adds or modifies an attribute.
void	setContent(String content)	Changes the content string.
void	setDoubleAttribute(String name, double value)	Adds or modifies an attribute.
void	setIntAttribute(String name, int value)	Adds or modifies an attribute.
void	setLongAttribute(String name, long value)	Adds or modifies an attribute.
void	setName(String name)	Changes the name of the element.
protected void	setParent(XmlElement parent)
protected void	skipComment()	Skips a comment.
protected void	skipSpecialTag(int bracketLevel)	Skips a special tag or comment.
protected XmlParseException	syntaxError(String context)	Creates a parse exception for when a syntax error occured.
String	toCompactString()
String	toString()	Writes the XML element to a string.
protected XmlParseException	unexpectedEndOfData()	Creates a parse exception for when the end of the data input has been reached.
protected XmlParseException	unknownEntity(String name)	Creates a parse exception for when an entity could not be resolved.
protected void	unreadChar(char ch)	Pushes a character back to the read-back buffer.
void	write(Writer writer)	Writes the XML element to a writer.
void	write(Writer writer, boolean standalone, int indent)	Writes the XML element to a writer.
void	write(Writer writer, int indent)	Writes the XML element to a writer.
protected static void	write(Writer writer, XmlElement element, boolean standalone, int indent, int level)	Writes the XML element to a writer.
protected static void	writeEncoded(Writer writer, String str)	Writes a string encoded to a writer.

从类继承的方法 java.lang.Object

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

构造器详细资料

XmlElement

public XmlElement()

Creates and initializes a new XML element. Calling the construction is equivalent to:

new XmlElement(new Hashtable(), false, true)

Postconditions:

• countChildren() => 0
• enumerateChildren() => empty enumeration
• enumeratePropertyNames() => empty enumeration
• getChildren() => empty vector
• getContent() => ""
• getLineNr() => 0
• getName() => null

XmlElement

public XmlElement(Map<String,char[]> entities)

Creates and initializes a new XML element. Calling the construction is equivalent to:

new XmlElement(entities, false, true)

参数:

entities - The entity conversion table.

Preconditions:

• entities != null

Postconditions:

• countChildren() => 0
• enumerateChildren() => empty enumeration
• enumeratePropertyNames() => empty enumeration
• getChildren() => empty vector
• getContent() => ""
• getLineNr() => 0
• getName() => null

XmlElement

public XmlElement(boolean skipLeadingWhitespace)

Creates and initializes a new XML element. Calling the construction is equivalent to:

new XmlElement(new Hashtable(), skipLeadingWhitespace, true)

参数:

skipLeadingWhitespace - true if leading and trailing whitespace in PCDATA content has to be removed.

Postconditions:

• countChildren() => 0
• enumerateChildren() => empty enumeration
• enumeratePropertyNames() => empty enumeration
• getChildren() => empty vector
• getContent() => ""
• getLineNr() => 0
• getName() => null

XmlElement

public XmlElement(Map<String,char[]> entities,
 boolean skipLeadingWhitespace)

Creates and initializes a new XML element. Calling the construction is equivalent to:

new XmlElement(entities, skipLeadingWhitespace, true)

参数:

entities - The entity conversion table.

skipLeadingWhitespace - true if leading and trailing whitespace in PCDATA content has to be removed.

Preconditions:

• entities != null

Postconditions:

• countChildren() => 0
• enumerateChildren() => empty enumeration
• enumeratePropertyNames() => empty enumeration
• getChildren() => empty vector
• getContent() => ""
• getLineNr() => 0
• getName() => null

XmlElement

protected XmlElement(Map<String,char[]> entities,
 boolean skipLeadingWhitespace,
 boolean fillBasicConversionTable)

Creates and initializes a new XML element.

This constructor should only be called from createAnotherElement to create child elements.

参数:

entities - The entity conversion table.

skipLeadingWhitespace - true if leading and trailing whitespace in PCDATA content has to be removed.

fillBasicConversionTable - true if the basic entities need to be added to the entity list.

Preconditions:

• entities != null
• if fillBasicConversionTable == false then entities contains at least the following entries: amp, lt, gt, apos and quot

Postconditions:

• countChildren() => 0
• enumerateChildren() => empty enumeration
• enumeratePropertyNames() => empty enumeration
• getChildren() => empty vector
• getContent() => ""
• getLineNr() => 0
• getName() => null

方法详细资料

isIgnoreWhitespace

public boolean isIgnoreWhitespace()

返回:

true if the leading and trailing whitespace of #PCDATA sections have to be ignored.

addChild

public void addChild(XmlElement child)

Adds a child element.

参数:

child - The child element to add.

Preconditions:

• child != null
• child.getName() != null
• child does not have a parent element

Postconditions:

• countChildren() => old.countChildren() + 1
• enumerateChildren() => old.enumerateChildren() + child
• getChildren() => old.enumerateChildren() + child

removeChild

public void removeChild(XmlElement child)

Removes a child element.

参数:

child - The child element to remove.

Preconditions:

• child != null
• child is a child element of the receiver

Postconditions:

• countChildren() => old.countChildren() - 1
• enumerateChildren() => old.enumerateChildren() - child
• getChildren() => old.enumerateChildren() - child

getName

public String getName()

Returns the name of the element.

setName

public void setName(String name)

Changes the name of the element.

参数:

name - The new name.

Preconditions:

• name != null
• name is a valid XML identifier

getParent

public XmlElement getParent()

Returns the parent of the element.

返回:

setParent

protected void setParent(XmlElement parent)

参数:

parent -

getChildrenCount

public int getChildrenCount()

Returns the number of child elements of the element.

Postconditions:

• result >= 0

getChild

public XmlElement getChild(int index)

参数:

index -

返回:

getChild

public XmlElement getChild(String name)

参数:

name -

返回:

getChildContent

public String getChildContent(String name)

参数:

name -

返回:

getChildren

public List<XmlElement> getChildren()

Returns the child elements as a List.

Postconditions:

• result != null

getChildren

public List<XmlElement> getChildren(String name)

参数:

name -

返回:

getLineNr

public int getLineNr()

Returns the line nr in the source data on which the element is found. This method returns 0 there is no associated source data.

Postconditions:

• result >= 0

getContent

public String getContent()

Returns the PCDATA content of the object. If there is no such content, null is returned.

setContent

public void setContent(String content)

Changes the content string.

参数:

content - The new content string.

setAttribute

public void setAttribute(String name,
 Object value)

Adds or modifies an attribute.

参数:

name - The name of the attribute.

value - The value of the attribute.

Preconditions:

• name != null
• name is a valid XML identifier
• value != null

Postconditions:

• enumerateAttributeNames() => old.enumerateAttributeNames() + name
• getAttribute(name) => value

removeAttribute

public void removeAttribute(String name)

Removes an attribute.

参数:

name - The name of the attribute.

Preconditions:

• name != null
• name is a valid XML identifier

Postconditions:

• enumerateAttributeNames() => old.enumerateAttributeNames() - name
• getAttribute(name) => null

getAttributeNames

public Set<String> getAttributeNames()

Get the attribute names.

Postconditions:

• result != null

hasAttribute

public boolean hasAttribute(String name)

Returns true if this element contains a attribute for the specified name.

参数:

name -

返回:

getAttribute

public Object getAttribute(String name)

Returns an attribute of the element. If the attribute doesn't exist, null is returned.

参数:

name - The name of the attribute.

Preconditions:

• name != null
• name is a valid XML identifier

getAttribute

public Object getAttribute(String name,
 Object defaultValue)

Returns an attribute of the element. If the attribute doesn't exist, defaultValue is returned.

参数:

name - The name of the attribute.

defaultValue - Key to use if the attribute is missing.

Preconditions:

• name != null
• name is a valid XML identifier

getIntAttribute

public int getIntAttribute(String name)

Returns an attribute of the element. If the attribute doesn't exist, 0 is returned.

参数:

name - The name of the attribute.

Preconditions:

• name != null
• name is a valid XML identifier

getIntAttribute

public int getIntAttribute(String name,
 int defaultValue)

Returns an attribute of the element. If the attribute doesn't exist, defaultValue is returned.

参数:

name - The name of the attribute.

defaultValue - Key to use if the attribute is missing.

Preconditions:

• name != null
• name is a valid XML identifier

setIntAttribute

public void setIntAttribute(String name,
 int value)

Adds or modifies an attribute.

参数:

name - The name of the attribute.

value - The value of the attribute.

Preconditions:

• name != null
• name is a valid XML identifier

Postconditions:

• enumerateAttributeNames() => old.enumerateAttributeNames() + name
• getIntAttribute(name) => value

getLongAttribute

public long getLongAttribute(String name)

Returns an attribute of the element. If the attribute doesn't exist, 0 is returned.

参数:

name - The name of the attribute.

Preconditions:

• name != null
• name is a valid XML identifier

getLongAttribute

public long getLongAttribute(String name,
 long defaultValue)

Returns an attribute of the element. If the attribute doesn't exist, defaultValue is returned.

参数:

name - The name of the attribute.

defaultValue - Key to use if the attribute is missing.

Preconditions:

• name != null
• name is a valid XML identifier

setLongAttribute

public void setLongAttribute(String name,
 long value)

Adds or modifies an attribute.

参数:

name - The name of the attribute.

value - The value of the attribute.

Preconditions:

• name != null
• name is a valid XML identifier

Postconditions:

• enumerateAttributeNames() => old.enumerateAttributeNames() + name
• getIntAttribute(name) => value

getStringAttribute

public String getStringAttribute(String name)

Returns an attribute of the element. If the attribute doesn't exist, null is returned.

参数:

name - The name of the attribute.

Preconditions:

• name != null
• name is a valid XML identifier

getStringAttribute

public String getStringAttribute(String name,
 String defaultValue)

Returns an attribute of the element. If the attribute doesn't exist, defaultValue is returned.

参数:

name - The name of the attribute.

defaultValue - Key to use if the attribute is missing.

Preconditions:

• name != null
• name is a valid XML identifier

getDoubleAttribute

public double getDoubleAttribute(String name)

Returns an attribute of the element. If the attribute doesn't exist, 0.0 is returned.

参数:

name - The name of the attribute.

Preconditions:

• name != null
• name is a valid XML identifier

getDoubleAttribute

public double getDoubleAttribute(String name,
 double defaultValue)

Returns an attribute of the element. If the attribute doesn't exist, defaultValue is returned.

参数:

name - The name of the attribute.

defaultValue - Key to use if the attribute is missing.

Preconditions:

• name != null
• name is a valid XML identifier

setDoubleAttribute

public void setDoubleAttribute(String name,
 double value)

Adds or modifies an attribute.

参数:

name - The name of the attribute.

value - The value of the attribute.

Preconditions:

• name != null
• name is a valid XML identifier

Postconditions:

• enumerateAttributeNames() => old.enumerateAttributeNames() + name
• getDoubleAttribute(name) => value

getBooleanAttribute

public boolean getBooleanAttribute(String name,
 String trueValue,
 String falseValue,
 boolean defaultValue)

Returns an attribute of the element. If the attribute doesn't exist, defaultValue is returned. If the value of the attribute is equal to trueValue, true is returned. If the value of the attribute is equal to falseValue, false is returned. If the value doesn't match trueValue or falseValue, an exception is thrown.

参数:

name - The name of the attribute.

trueValue - The value associated with true.

falseValue - The value associated with true.

defaultValue - Value to use if the attribute is missing.

Preconditions:

• name != null
• name is a valid XML identifier
• trueValue and falseValue are different strings.

parseFromReader

public void parseFromReader(Reader reader)
                     throws IOException,
XmlParseException

Reads one XML element from a java.io.Reader and parses it.

参数:

reader - The reader from which to retrieve the XML data.

Preconditions:

• reader != null
• reader is not closed

Postconditions:

• the state of the receiver is updated to reflect the XML element parsed from the reader
• the reader points to the first character following the last '>' character of the XML element

抛出:

IOException - If an error occured while reading the input.

XmlParseException - If an error occured while parsing the read data.

parseFromReader

public void parseFromReader(Reader reader,
 int startingLineNr)
                     throws IOException,
XmlParseException

Reads one XML element from a java.io.Reader and parses it.

参数:

reader - The reader from which to retrieve the XML data.

startingLineNr - The line number of the first line in the data.

Preconditions:

• reader != null
• reader is not closed

Postconditions:

• the state of the receiver is updated to reflect the XML element parsed from the reader
• the reader points to the first character following the last '>' character of the XML element

抛出:

IOException - If an error occured while reading the input.

XmlParseException - If an error occured while parsing the read data.

parseString

public void parseString(String string)
                 throws XmlParseException

Reads one XML element from a String and parses it.

参数:

string - The reader from which to retrieve the XML data.

Preconditions:

• string != null
• string.length() > 0

Postconditions:

• the state of the receiver is updated to reflect the XML element parsed from the reader

抛出:

XmlParseException - If an error occured while parsing the string.

parseString

public void parseString(String string,
 int offset)
                 throws XmlParseException

Reads one XML element from a String and parses it.

参数:

string - The reader from which to retrieve the XML data.

offset - The first character in string to scan.

Preconditions:

• string != null
• offset < string.length()
• offset >= 0

Postconditions:

• the state of the receiver is updated to reflect the XML element parsed from the reader

抛出:

XmlParseException - If an error occured while parsing the string.

parseString

public void parseString(String string,
 int offset,
 int end)
                 throws XmlParseException

Reads one XML element from a String and parses it.

参数:

string - The reader from which to retrieve the XML data.

offset - The first character in string to scan.

end - The character where to stop scanning. This character is not scanned.

Preconditions:

• string != null
• end <= string.length()
• offset < end
• offset >= 0

Postconditions:

• the state of the receiver is updated to reflect the XML element parsed from the reader

抛出:

XmlParseException - If an error occured while parsing the string.

parseString

public void parseString(String string,
 int offset,
 int end,
 int startingLineNr)
                 throws XmlParseException

Reads one XML element from a String and parses it.

参数:

string - The reader from which to retrieve the XML data.

offset - The first character in string to scan.

end - The character where to stop scanning. This character is not scanned.

startingLineNr - The line number of the first line in the data.

Preconditions:

• string != null
• end <= string.length()
• offset < end
• offset >= 0

Postconditions:

• the state of the receiver is updated to reflect the XML element parsed from the reader

抛出:

XmlParseException - If an error occured while parsing the string.

parseCharArray

public void parseCharArray(char[] input,
 int offset,
 int end)
                    throws XmlParseException

Reads one XML element from a char array and parses it.

参数:

input - The reader from which to retrieve the XML data.

offset - The first character in string to scan.

end - The character where to stop scanning. This character is not scanned.

Preconditions:

• input != null
• end <= input.length
• offset < end
• offset >= 0

Postconditions:

• the state of the receiver is updated to reflect the XML element parsed from the reader

抛出:

XmlParseException - If an error occured while parsing the string.

parseCharArray

public void parseCharArray(char[] input,
 int offset,
 int end,
 int startingLineNr)
                    throws XmlParseException

Reads one XML element from a char array and parses it.

参数:

input - The reader from which to retrieve the XML data.

offset - The first character in string to scan.

end - The character where to stop scanning. This character is not scanned.

startingLineNr - The line number of the first line in the data.

Preconditions:

• input != null
• end <= input.length
• offset < end
• offset >= 0

Postconditions:

• the state of the receiver is updated to reflect the XML element parsed from the reader

抛出:

XmlParseException - If an error occured while parsing the string.

write

public void write(Writer writer)
           throws IOException

Writes the XML element to a writer.

参数:

writer - The writer to write the XML data to.

Preconditions:

• writer != null
• writer is not closed

抛出:

IOException - If the data could not be written to the writer.

另请参阅:

• toString()

write

public void write(Writer writer,
 boolean standalone,
 int indent)
           throws IOException

Writes the XML element to a writer.

参数:

writer - The writer to write the XML data to.

standalone - If true then element on a separate line.

indent - How many spaces to indent the element.

Preconditions:

• writer != null
• writer is not closed

抛出:

IOException - If the data could not be written to the writer.

另请参阅:

• toString()

write

public void write(Writer writer,
 int indent)
           throws IOException

Writes the XML element to a writer.

参数:

writer - The writer to write the XML data to.

indent - How many spaces to indent the element.

Preconditions:

• writer != null
• writer is not closed

抛出:

IOException - If the data could not be written to the writer.

另请参阅:

• toString()

write

protected static void write(Writer writer,
 XmlElement element,
 boolean standalone,
 int indent,
 int level)
                     throws IOException

Writes the XML element to a writer.

参数:

writer - The writer to write the XML data to.

standalone -

indent - How many spaces to indent the element.

Preconditions:

• writer != null
• writer is not closed

抛出:

IOException - If the data could not be written to the writer.

另请参阅:

• toString()

writeEncoded

protected static void writeEncoded(Writer writer,
 String str)
                            throws IOException

Writes a string encoded to a writer.

参数:

writer - The writer to write the XML data to.

str - The string to write encoded.

Preconditions:

• writer != null
• writer is not closed
• str != null

抛出:

IOException

toCompactString

public String toCompactString()

toString

public String toString()

Writes the XML element to a string.

覆盖:

toString 在类中 Object

另请参阅:

• write(Writer)

createAnotherElement

protected XmlElement createAnotherElement()

Creates a new similar XML element.

You should override this method when subclassing XmlElement.

scanIdentifier

protected void scanIdentifier(StringBuilder result)
                       throws IOException

Scans an identifier from the current reader. The scanned identifier is appended to result.

参数:

result - The buffer in which the scanned identifier will be put.

Preconditions:

• result != null
• The next character read from the reader is a valid first character of an XML identifier.

Postconditions:

• The next character read from the reader won't be an identifier character.

抛出:

IOException

scanWhitespace

protected char scanWhitespace()
                       throws IOException

This method scans an identifier from the current reader.

返回:

the next character following the whitespace.

抛出:

IOException

scanWhitespace

protected char scanWhitespace(StringBuilder buf)
                       throws IOException

This method scans an identifier from the current reader. The scanned whitespace is appended to result.

返回:

the next character following the whitespace.

Preconditions:

• result != null

抛出:

IOException

scanString

protected void scanString(StringBuilder buf)
                   throws IOException

This method scans a delimited string from the current reader. The scanned string without delimiters is appended to string.

Preconditions:

• string != null
• the next char read is the string delimiter

抛出:

IOException

scanPCData

protected boolean scanPCData(StringBuilder buf)
                      throws IOException

Scans a #PCDATA element. CDATA sections and entities are resolved. The next < char is skipped. The scanned data is appended to data.

Preconditions:

• data != null

抛出:

IOException

checkCDATA

protected boolean checkCDATA(StringBuilder buf)
                      throws IOException

Scans a special tag and if the tag is a CDATA section, append its content to buf.

Preconditions:

• buf != null
• The first < has already been read.

抛出:

IOException

skipComment

protected void skipComment()
                    throws IOException

Skips a comment.

Preconditions:

• The first <!-- has already been read.

抛出:

IOException

skipSpecialTag

protected void skipSpecialTag(int bracketLevel)
                       throws IOException

Skips a special tag or comment.

参数:

bracketLevel - The number of open square brackets ([) that have already been read.

Preconditions:

• The first <! has already been read.
• bracketLevel >= 0

抛出:

IOException

checkLiteral

protected boolean checkLiteral(String literal)
                        throws IOException

Scans the data for literal text. Scanning stops when a character does not match or after the complete text has been checked, whichever comes first.

参数:

literal - the literal to check.

Preconditions:

• literal != null

抛出:

IOException

readChar

protected char readChar()
                 throws IOException

Reads a character from a reader.

抛出:

IOException

scanElement

protected void scanElement(XmlElement elt)
                    throws IOException

Scans an XML element.

参数:

elt - The element that will contain the result.

Preconditions:

• The first < has already been read.
• elt != null

抛出:

IOException

resolveEntity

protected void resolveEntity(StringBuilder buf)
                      throws IOException

Resolves an entity. The name of the entity is read from the reader. The value of the entity is appended to buf.

参数:

buf - Where to put the entity value.

Preconditions:

• The first & has already been read.
• buf != null

抛出:

IOException

unreadChar

protected void unreadChar(char ch)

Pushes a character back to the read-back buffer.

参数:

ch - The character to push back.

Preconditions:

• The read-back buffer is empty.
• ch != '\0'

invalidValueSet

protected XmlParseException invalidValueSet(String name)

Creates a parse exception for when an invalid valueset is given to a method.

参数:

name - The name of the entity.

Preconditions:

• name != null

invalidValue

protected XmlParseException invalidValue(String name,
 String value)

Creates a parse exception for when an invalid value is given to a method.

参数:

name - The name of the entity.

value - The value of the entity.

Preconditions:

• name != null
• value != null

unexpectedEndOfData

protected XmlParseException unexpectedEndOfData()

Creates a parse exception for when the end of the data input has been reached.

syntaxError

protected XmlParseException syntaxError(String context)

Creates a parse exception for when a syntax error occured.

参数:

context - The context in which the error occured.

Preconditions:

• context != null
• context.length() > 0

expectedInput

protected XmlParseException expectedInput(String charSet)

Creates a parse exception for when the next character read is not the character that was expected.

参数:

charSet - The set of characters (in human readable form) that was expected.

Preconditions:

• charSet != null
• charSet.length() > 0

unknownEntity

protected XmlParseException unknownEntity(String name)

Creates a parse exception for when an entity could not be resolved.

参数:

name - The name of the entity.

Preconditions:

• name != null
• name.length() > 0