public class StringValue extends AtomicValue
Modifier and Type | Class and Description |
---|---|
class |
StringValue.CharacterIterator
CharacterIterator is used to iterate over the characters in a string,
returning them as integers representing the Unicode code-point.
|
Modifier and Type | Field and Description |
---|---|
static StringValue |
EMPTY_STRING |
protected int |
length |
static StringValue |
SINGLE_SPACE |
protected CharSequence |
value |
EMPTY_CLASS_ARRAY
EMPTY_VALUE_ARRAY
EVALUATE_METHOD, ITERATE_METHOD, PROCESS_METHOD
Modifier | Constructor and Description |
---|---|
protected |
StringValue()
Protected constructor for use by subtypes
|
|
StringValue(CharSequence value)
Constructor.
|
Modifier and Type | Method and Description |
---|---|
static CharSequence |
contract(int[] codes,
int used)
Contract an array of integers containing Unicode codepoints into a Java string
|
AtomicValue |
convertPrimitive(BuiltInAtomicType requiredType,
boolean validate,
XPathContext context)
Convert a value to another primitive data type, with control over how validation is
handled.
|
static AtomicValue |
convertStringToAtomicType(CharSequence value,
AtomicType targetType,
NameChecker checker)
Convert the value to a given type.
|
static AtomicValue |
convertStringToBuiltInType(CharSequence value,
BuiltInAtomicType requiredType,
NameChecker checker)
Convert a string value to another built-in data type, with control over how validation is
handled.
|
Object |
convertToJava(Class target,
XPathContext context)
Convert to Java object (for passing to external functions)
|
boolean |
effectiveBooleanValue(XPathContext context)
Get the effective boolean value of the value
|
boolean |
equals(Object other)
Determine if two StringValues are equal, according to XML Schema rules.
|
static int[] |
expand(CharSequence s)
Expand a string containing surrogate pairs into an array of 32-bit characters
|
ItemType |
getItemType(TypeHierarchy th)
Return the type of the expression
|
int |
getStringLength()
Get the length of this string, as defined in XPath.
|
static int |
getStringLength(CharSequence s)
Get the length of a string, as defined in XPath.
|
String |
getStringValue()
Get the string value as a String
|
CharSequence |
getStringValueCS()
Get the value of the item as a CharSequence.
|
int |
hashCode()
Return a hash code to support the equals() function
|
SequenceIterator |
iterateCharacters()
Iterate over a string, returning a sequence of integers representing the Unicode code-point values
|
static StringValue |
makeStringValue(CharSequence value)
Factory method.
|
boolean |
schemaEquals(Value obj)
Compare two values for equality.
|
String |
toString()
Get string value.
|
checkPermittedContents, convert, convert, display, evaluateAsString, evaluateItem, getCardinality, getComponent, getImplementationMethod, getLength, getPrimitiveValue, getTypedValue, hasBuiltInType, iterate, process
asItem, asIterator, asValue, collapseWhitespace, convert, convertJavaObjectToXPath, getDependencies, getIterator, getParentExpression, getSpecialProperties, itemAt, iterateSubExpressions, makeQNameValue, normalizeWhitespace, optimize, promote, reduce, simplify, stringToNumber, trimWhitespace, typeCheck
public static final StringValue EMPTY_STRING
public static final StringValue SINGLE_SPACE
protected CharSequence value
protected int length
protected StringValue()
public StringValue(CharSequence value)
value
- the String value. Null is taken as equivalent to "".public static StringValue makeStringValue(CharSequence value)
value
- the String value. Null is taken as equivalent to "".public final String getStringValue()
getStringValue
in interface Item
getStringValue
in interface ValueRepresentation
getStringValue
in class AtomicValue
Item.getStringValueCS()
public final CharSequence getStringValueCS()
getStringValueCS
in interface Item
getStringValueCS
in class AtomicValue
Item.getStringValue()
public AtomicValue convertPrimitive(BuiltInAtomicType requiredType, boolean validate, XPathContext context)
convertPrimitive
in class AtomicValue
requiredType
- type code of the required atomic typevalidate
- true if validation is required. If set to false, the caller guarantees that
the value is valid for the target data type, and that further validation is therefore not required.
Note that a validation failure may be reported even if validation was not requested.context
- public static AtomicValue convertStringToBuiltInType(CharSequence value, BuiltInAtomicType requiredType, NameChecker checker)
value
- the value to be convertedrequiredType
- the required atomic typechecker
- if validation is required, a NameChecker. If set to null, the caller guarantees that
the value is valid for the target data type, and that further validation is therefore not required.
Note that a validation failure may be reported even if validation was not requested.ValidationErrorValue
. The caller must check for this condition. No exception is thrown, instead
the exception will be encapsulated within the ValidationErrorValue.public static AtomicValue convertStringToAtomicType(CharSequence value, AtomicType targetType, NameChecker checker)
targetType
- the type to which the value is to be convertedchecker
- a NameChecker if validation is required, null if the caller already knows that the
value is validValidationErrorValue
if conversion failed. The
caller must check for this condition. Validation may fail even if validation was not requested.public ItemType getItemType(TypeHierarchy th)
getItemType
in interface Expression
getItemType
in class Value
th
- public int getStringLength()
public static int getStringLength(CharSequence s)
s
- The string whose length is requiredpublic SequenceIterator iterateCharacters()
public static int[] expand(CharSequence s)
public static CharSequence contract(int[] codes, int used)
public boolean equals(Object other)
equals
in class Value
ClassCastException
- if the values are not comparablepublic int hashCode()
Value
public boolean schemaEquals(Value obj)
schemaEquals
in class AtomicValue
public boolean effectiveBooleanValue(XPathContext context) throws XPathException
AtomicValue
effectiveBooleanValue
in interface Expression
effectiveBooleanValue
in class AtomicValue
context
- the evaluation context (not used in this implementation)XPathException
- if any dynamic error occurs evaluating the
expressionpublic Object convertToJava(Class target, XPathContext context) throws XPathException
convertToJava
in class Value
XPathException
public String toString()
AtomicValue
toString
in class AtomicValue