XMLUtil (RDF4J 2.5.4 API)

java.lang.Object
- org.eclipse.rdf4j.common.xml.XMLUtil

```
public class XMLUtil
extends Object
```
Utility methods for handling and processing XML data.

Constructor Summary

Constructors
Constructor and Description

XMLUtil()

Constructors
Constructor and Description
`XMLUtil()`

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method and Description
`static String`	`escapeAttributeValue(String value)` Escapes all characters that have a special meaning in XML attribute values -- i.e.
`static String`	`escapeCharacterData(String text)` Escapes any special characters in the supplied text so that it can be included as character data in an XML document.
`static String`	`escapeDoubleQuotedAttValue(String value)` Escapes any special characters in the supplied value so that it can be used as an double-quoted attribute value in an XML document.
`static String`	`escapeSingleQuotedAttValue(String value)` Escapes any special characters in the supplied value so that it can be used as an single-quoted attribute value in an XML document.
`static String`	`escapeText(String text)` Escapes all characters that have a special meaning in XML text -- i.e.
`static int`	`findURISplitIndex(String uri)` Tries to find a point in the supplied URI where this URI can be safely split into a namespace part and a local name.
`static boolean`	`isCombiningChar(char c)`
`static boolean`	`isDigit(char c)`
`static boolean`	`isExtender(char c)`
`static boolean`	`isIdeographic(char c)`
`static boolean`	`isLetter(char c)`
`static boolean`	`isNCName(String name)` Checks whether the supplied String is an NCName (Namespace Classified Name) as specified at http://www.w3.org/TR/REC-xml-names/#NT-NCName .
`static boolean`	`isNCNameChar(char c)`
`static boolean`	`isNCNameStartChar(char c)`
`static boolean`	`isValidCharacterDataChar(char c)` Returns whether the specified character can appear in XML character data.
`static boolean`	`isValidCharacterDataChar(int c)` Returns whether the specified character can appear in XML character data.
`static String`	`removeInvalidCharacterDataChars(String s)` Removes all non-valid XML character data chars from the specified String.
`static String`	`resolveEntities(String text)` Replaces all XML character entities with the character they represent.
`static String`	`resolveEntity(String entName)` Resolves an entity reference or character reference to its value.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - XMLUtil
```
public XMLUtil()
```
- Method Detail
  - escapeCharacterData
```
public static String escapeCharacterData(String text)
```
    Escapes any special characters in the supplied text so that it can be included as character data in an XML document. The characters that are escaped are &, <, > and carriage return (\r).
  - escapeDoubleQuotedAttValue
```
public static String escapeDoubleQuotedAttValue(String value)
```
    Escapes any special characters in the supplied value so that it can be used as an double-quoted attribute value in an XML document. The characters that are escaped are &, <, >, tab (\t), carriage return (\r), line feed (\n) and " .
  - escapeSingleQuotedAttValue
```
public static String escapeSingleQuotedAttValue(String value)
```
    Escapes any special characters in the supplied value so that it can be used as an single-quoted attribute value in an XML document. The characters that are escaped are &, <, >, tab (\t), carriage return (\r), line feed (\n) and ' .
  - resolveEntities
```
public static String resolveEntities(String text)
```
    Replaces all XML character entities with the character they represent.
  - resolveEntity
```
public static String resolveEntity(String entName)
```
    Resolves an entity reference or character reference to its value.
    
    Parameters:
    
    entName - The 'name' of the reference. This is the string between & and ;, e.g. amp, quot, #65 or #x41.
    
    Returns:
    
    The value of the supplied reference, or the reference itself if it could not be resolved.
  - findURISplitIndex
```
public static int findURISplitIndex(String uri)
```
    Tries to find a point in the supplied URI where this URI can be safely split into a namespace part and a local name. According to the XML specifications, a local name must start with a letter or underscore and can be followed by zero or more 'NCName' characters.
    
    Parameters:
    
    uri - The URI to split.
    
    Returns:
    
    The index of the first character of the local name, or -1 if the URI can not be split into a namespace and local name.
  - isNCName
```
public static final boolean isNCName(String name)
```
    Checks whether the supplied String is an NCName (Namespace Classified Name) as specified at http://www.w3.org/TR/REC-xml-names/#NT-NCName .
  - isNCNameStartChar
```
public static final boolean isNCNameStartChar(char c)
```
  - isNCNameChar
```
public static final boolean isNCNameChar(char c)
```
  - escapeAttributeValue
```
public static String escapeAttributeValue(String value)
```
    Escapes all characters that have a special meaning in XML attribute values -- i.e. &, <, >, " and ' -- with their entities.
    
    See Also:
    
    resolveEntities(java.lang.String)
  - escapeText
```
public static String escapeText(String text)
```
    Escapes all characters that have a special meaning in XML text -- i.e. &, < and > -- with their entities.
    
    See Also:
    
    resolveEntities(java.lang.String)
  - isValidCharacterDataChar
```
public static boolean isValidCharacterDataChar(char c)
```
    Returns whether the specified character can appear in XML character data.
  - isValidCharacterDataChar
```
public static boolean isValidCharacterDataChar(int c)
```
    Returns whether the specified character can appear in XML character data. The integer encoding also makes the representation of supplementary Unicode characters possible.
  - removeInvalidCharacterDataChars
```
public static String removeInvalidCharacterDataChars(String s)
```
    Removes all non-valid XML character data chars from the specified String. If all characters are valid character data chars, this method will return the same String.
  - isLetter
```
public static final boolean isLetter(char c)
```
  - isIdeographic
```
public static final boolean isIdeographic(char c)
```
  - isCombiningChar
```
public static final boolean isCombiningChar(char c)
```
  - isDigit
```
public static final boolean isDigit(char c)
```
  - isExtender
```
public static final boolean isExtender(char c)
```

Class XMLUtil

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

XMLUtil

Method Detail

escapeCharacterData

escapeDoubleQuotedAttValue

escapeSingleQuotedAttValue

resolveEntities

resolveEntity

findURISplitIndex

isNCName

isNCNameStartChar

isNCNameChar

escapeAttributeValue

escapeText

isValidCharacterDataChar

isValidCharacterDataChar

removeInvalidCharacterDataChars

isLetter

isIdeographic

isCombiningChar

isDigit

isExtender