org.whattf.datatype
Class AbstractDatatype

java.lang.Object
  org.whattf.datatype.AbstractDatatype

All Implemented Interfaces:

Datatype

Direct Known Subclasses:

AbstractDatetime, AsciiCaseInsensitiveString, Id, Idrefs, IriRef, Language, Month, Pattern, Ratio, Week

abstract class AbstractDatatype
extends Object
implements Datatype

Common superclass for HTML5 datatypes. Implements all methods of the Datatype interface and leaves a new checkValid for subclasses to implement.

Version:

$Id: AbstractDatatype.java 209 2007-10-17 07:09:57Z hsivonen $

Author:

hsivonen

Field Summary

private static int

CASE_MASK Mask for ASCII case folding.

Fields inherited from interface org.relaxng.datatype.Datatype

ID_TYPE_ID, ID_TYPE_IDREF, ID_TYPE_IDREFS, ID_TYPE_NULL

Constructor Summary

AbstractDatatype()
Constructor

Method Summary

abstract void	checkValid(CharSequence literal)
void	checkValid(String literal, ValidationContext context) Delegates to checkValid(CharSequence literal).
DatatypeStreamingValidator	createStreamingValidator(ValidationContext context) Merely returns a DatatypeStreamingValidatorImpl.
Object	createValue(String literal, ValidationContext context) Implements strict string equality semantics by returning literal itself.
int	getIdType() Always returns Datatype.ID_TYPE_NULL.
boolean	isContextDependent() Always returns false
boolean	isValid(String literal, ValidationContext context) Calls checkValid(CharSequence literal).
protected boolean	isWhitespace(char c) Checks if a UTF-16 code unit represents a whitespace character (U+0020, U+0009, U+000D or U+000A).
boolean	sameValue(Object value1, Object value2) Implements strict string equality semantics by performing a standard equals check on the arguments.
protected char	toAsciiLowerCase(char c) If the argument is an upper case ASCII letter, returns the letter in lower case.
protected String	toAsciiLowerCase(String str)
int	valueHashCode(Object value) Implements strict stirng equality semantics by returning the java.lang.Object-level hashCode of the object.

Methods inherited from class java.lang.Object

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

Field Detail

CASE_MASK

private static final int CASE_MASK

Mask for ASCII case folding.

See Also:

Constant Field Values

Constructor Detail

AbstractDatatype

AbstractDatatype()

Constructor

Method Detail

isValid

public final boolean isValid(String literal,
                             ValidationContext context)

Calls checkValid(CharSequence literal).

Specified by:

isValid in interface Datatype

Parameters:

literal - the value

context - the validation context (ignored by subclasses)

Returns:

true if valid and false if not

See Also:

Datatype.isValid(java.lang.String, org.relaxng.datatype.ValidationContext)

checkValid

public final void checkValid(String literal,
                             ValidationContext context)
                      throws DatatypeException

Delegates to checkValid(CharSequence literal).

Specified by:

checkValid in interface Datatype

Parameters:

literal - the value

context - the validation context (ignored by subclasses)

Throws:

DatatypeException - if the literal does not conform to the datatype definition

See Also:

Datatype.checkValid(java.lang.String, org.relaxng.datatype.ValidationContext)

checkValid

public abstract void checkValid(CharSequence literal)
                         throws DatatypeException

Throws:

DatatypeException

createStreamingValidator

public DatatypeStreamingValidator createStreamingValidator(ValidationContext context)

Merely returns a DatatypeStreamingValidatorImpl.

Specified by:

createStreamingValidator in interface Datatype

Parameters:

context - the validation context (ignored by subclasses)

Returns:

An unoptimized DatatypeStreamingValidator

See Also:

Datatype.createStreamingValidator(org.relaxng.datatype.ValidationContext)

createValue

public Object createValue(String literal,
                          ValidationContext context)

Implements strict string equality semantics by returning literal itself.

Specified by:

createValue in interface Datatype

Parameters:

literal - the value (get returned)

context - ignored

Returns:

the literal that was passed in

See Also:

Datatype.createValue(java.lang.String, org.relaxng.datatype.ValidationContext)

sameValue

public final boolean sameValue(Object value1,
                               Object value2)

Implements strict string equality semantics by performing a standard equals check on the arguments.

Specified by:

sameValue in interface Datatype

Parameters:

value1 - an object returned by createValue

value2 - another object returned by createValue

Returns:

true if the values are equal, false otherwise

See Also:

Datatype.sameValue(java.lang.Object, java.lang.Object)

valueHashCode

public final int valueHashCode(Object value)

Implements strict stirng equality semantics by returning the java.lang.Object-level hashCode of the object.

Specified by:

valueHashCode in interface Datatype

Parameters:

value - an object returned by createValue

Returns:

the hash code

See Also:

Datatype.valueHashCode(java.lang.Object)

getIdType

public int getIdType()

Always returns Datatype.ID_TYPE_NULL. (Overridden by subclasses that have a different ID-type.)

Specified by:

getIdType in interface Datatype

Returns:

Datatype.ID_TYPE_NULL

See Also:

Datatype.getIdType()

isContextDependent

public final boolean isContextDependent()

Always returns false

Specified by:

isContextDependent in interface Datatype

Returns:

false

See Also:

Datatype.isContextDependent()

isWhitespace

protected final boolean isWhitespace(char c)

Checks if a UTF-16 code unit represents a whitespace character (U+0020, U+0009, U+000D or U+000A).

Parameters:

c - the code unit

Returns:

true if whitespace, false otherwise

toAsciiLowerCase

protected final char toAsciiLowerCase(char c)

If the argument is an upper case ASCII letter, returns the letter in lower case. Otherwise returns the argument.

Parameters:

c - a UTF-16 code unit

Returns:

upper case ASCII lower cased

toAsciiLowerCase

protected final String toAsciiLowerCase(String str)