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## com.saxonica.schema
Class Wildcard

    java.lang.Object
      com.saxonica.schema.SchemaStructure
          com.saxonica.schema.Wildcard

All Implemented Interfaces:
  SerializableSchemaComponent, Term, UserSchemaComponent, Serializable, SourceLocator, SchemaComponent

    public class Wildcard

extends SchemaStructure
implements UserSchemaComponent, SerializableSchemaComponent, Term

A class that represents an XML Schema Wildcard. This is a helper class used to support the two distinct but similar schema components ElementWildcard and AttributeWildcard. A wilcard is represented by the XML elements xs:any and xs:anyAttribute

See Also:
  Serialized Form

Field Summary

Fields inherited from interface net.sf.saxon.type.SchemaComponent
`FIXED_UP, INCOMPLETE, INVALID, UNVALIDATED, VALIDATED, VALIDATING`

Constructor Summary
`Wildcard()`

Method Summary
`void` | `addAllowedNamespace(String namespace)` Add a permitted namespace.
`void` | `addDisallowedNamespace(String namespace)` Add a disallowed namespace.
`void` | `addDisallowedQName(int fingerprint)` Mark a specific QName as being disallowed
`boolean` | `allowsAny()` Determine whether this wildcard allows any namespace (##any)
`int` | `compareStrength(Wildcard other)`
`boolean` | `disallowsQName(int fingerprint)` Test whether a name is in the set of disallowed QNames
`Set<String>` | `getAllowedNamespaces()` Returns the set of permitted namespaces of this wildcard
`Set<String>` | `getDisallowedNamespaces()` Get the disallowed namespaces.
`String` | `getProcessContents()` Returns the processContents attribute of this wildcard
`boolean` | `isDisallowDefinedNames()` Ask whether globally-defined names are disallowed
`boolean` | `isDisallowDefinedSiblings()` Ask whether defined siblings are disallowed
`boolean` | `isDisallowedQName(int fingerprint)` Ask whether a specific QName is disallowed
`boolean` | `isInexpressible()` Determine whether this wildcard represents an "inexpressible" intersection or union
`static boolean` | `isNotStronger(String str1, String str2)` Test whether one processContents value is <= the strength of another, where skip < lax < strict
`boolean` | `isSubset(Wildcard sup, NamePool pool)` Determine whether this wildcard is a subset of another wildcard.
`static Wildcard` | `makeIntersection(Wildcard wat1, Wildcard wat2, NamePool pool)` Create an AttributeWildcard as the intersection of two AttributeWildcards.
`static Wildcard` | `makeUnion(Wildcard wat1, Wildcard wat2, NamePool pool)` Create a AttributeWildcard as the union of two AttributeWildcards.
`boolean` | `matches(int fingerprint, boolean isElement, Configuration config, UserComplexType parentType)` Determine whether a name is allowed by this wildcard.
`boolean` | `matches(String uri)` Determine whether a particular namespace is allowed by this wildcard.
`boolean` | `overlaps(Wildcard other)` Determine whether this wildcard overlaps another wildcard, that is, whether there is an element that could match either.
`String` | `reasonForNonMatch(int fingerprint, boolean isElement, Configuration config)` If matches() returns false, return a string explaining the reason for the non-match
`void` | `serialize(SchemaModelSerializer serializer)` Serialize this schema component
`void` | `setDisallowDefinedNames(boolean disallow)` Say that defined names are not allowed (notQName = "##defined")
`void` | `setDisallowDefinedSiblings(boolean disallow)` Say that defined siblings are not allowed (notQName = "##definedSibling")
`void` | `setNoNamespacesAllowed()` Initialize the set of permitted namespaces to an empty set.
`void` | `setProcessContents(String process)` Sets the processContents attribute of the wildCard.
`String` | `toString()` Get a string representation of this wildcard, used for diagnostics
`boolean` | `validate(SchemaCompiler compiler)` Perform validation on this wildcard (this implementation of the method is a no-op)

Methods inherited from class com.saxonica.schema.SchemaStructure
`elaborate, fixup, getColumnNumber, getConfiguration, getFixupStatus, getLineNumber, getPublicId, getRedefinitionLevel, getSchemaDocumentURI, getSystemId, getValidationStatus, lookForCycles, setConfiguration, setFixupStatus, setLineNumber, setLocator, setRedefinitionLevel, setSchemaDocumentURI, setSystemId, setValidationStatus`

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

Methods inherited from interface com.saxonica.schema.UserSchemaComponent
`elaborate, fixup, lookForCycles`

Methods inherited from interface net.sf.saxon.type.SchemaComponent
`getRedefinitionLevel, getValidationStatus`

Constructor Detail

### Wildcard

    public Wildcard()

Method Detail

### isInexpressible

    public boolean isInexpressible()

  Determine whether this wildcard represents an "inexpressible" intersection or union

  Returns:
    true if the intersection or union is inexpressible, as defined in XML Schema. This is essentially an error condition, so the wildcard should not be used if this property is true.

### allowsAny

    public final boolean allowsAny()

  Determine whether this wildcard allows any namespace (##any)

### setNoNamespacesAllowed

    public void setNoNamespacesAllowed()

  Initialize the set of permitted namespaces to an empty set. This is needed in case the namespace attribute is present but empty; it indicates that no namespaces are allowed.

### addAllowedNamespace

    public void addAllowedNamespace(String namespace)

  Add a permitted namespace. This must be an actual namespace, not one of the special tokens such as ##other; the non-namespace ("absent") is represented by the zero-length string. Validation of the namespace is the responsibility of the caller.

  Parameters:
    `namespace` - the namespace to add

### addDisallowedNamespace

    public void addDisallowedNamespace(String namespace)

  Add a disallowed namespace. This corresponds to the option ##other.

### getDisallowedNamespaces

    public Set<String> getDisallowedNamespaces()

  Get the disallowed namespaces. Returns null if there is no disallowed namespace.

### matches

    public boolean matches(String uri)

  Determine whether a particular namespace is allowed by this wildcard. This method ignores the QNames that have been explicitly disallowed (using notQNames)

  Parameters:
    `uri` - the namespace to be tested. Supply "" for the null (or "absent") namespace.
  Returns:
    true if the wildcard allows this namespace, false if not.

### matches

    public boolean matches(int fingerprint,
                           boolean isElement,
                           Configuration config,
                           UserComplexType parentType)

  Determine whether a name is allowed by this wildcard. This method ignores the restrictions imposed by ##definedSiblings

  Parameters:
    `fingerprint` - the fingerprint of the name
    `isElement` - true if looking for an element, false if looking for an attribute
    `config` - the Saxon configuration
    `parentType` - the governing type definition of the parent element, used to assess whether the ##definedSibling constraint prevents an element from matching. May be null, in which case ##definedSibling is ignored.
  Returns:
    true if the wildcard allows this name, false if not.

### reasonForNonMatch

    public String reasonForNonMatch(int fingerprint,
                                    boolean isElement,
                                    Configuration config)

  If matches() returns false, return a string explaining the reason for the non-match

  Parameters:
    `fingerprint` - the fingerprint of the name
    `isElement` - true if looking for an element, false if looking for an attribute
    `config` - the Saxon configuration
  Returns:
    null if the name matches, or a string explaining the reason if not

### disallowsQName

    public boolean disallowsQName(int fingerprint)

  Test whether a name is in the set of disallowed QNames

  Parameters:
    `fingerprint` - the fingerprint of the name to be tested
  Returns:
    true if the name is in the set of explicitly disallowed QNames

### getAllowedNamespaces

    public Set<String> getAllowedNamespaces()

  Returns the set of permitted namespaces of this wildcard

  Returns:
    the set of permitted namespaces of this wildcard, or null if no namespaces are explicitly permitted

### getProcessContents

    public String getProcessContents()

  Returns the processContents attribute of this wildcard

  Returns:
    the processContents attribute of this wildcard, as a string ("strict", "lax", or "skip")

### setProcessContents

    public void setProcessContents(String process)

  Sets the processContents attribute of the wildCard. For internal use only.

  Parameters:
    `process` - the processContents value to set (e.g. "strict", "lax"). Validation of the value is the responsibility of the caller.

### setDisallowDefinedNames

    public void setDisallowDefinedNames(boolean disallow)

  Say that defined names are not allowed (notQName = "##defined")

  Parameters:
    `disallow` - true if defined names are disallowed

### isDisallowDefinedNames

    public boolean isDisallowDefinedNames()

  Ask whether globally-defined names are disallowed

  Returns:
    true if globally-defined names are disallowed (notQName = "##defined")

### setDisallowDefinedSiblings

    public void setDisallowDefinedSiblings(boolean disallow)

  Say that defined siblings are not allowed (notQName = "##definedSibling")

  Parameters:
    `disallow` - true if defined siblings are disallowed

### isDisallowDefinedSiblings

    public boolean isDisallowDefinedSiblings()

  Ask whether defined siblings are disallowed

  Returns:
    true if the names of defined siblings are disallowed (notQName = "##definedSibling")

### addDisallowedQName

    public void addDisallowedQName(int fingerprint)

  Mark a specific QName as being disallowed

  Parameters:
    `fingerprint` - the NamePool fingerprint of the disallowed name

### isDisallowedQName

    public boolean isDisallowedQName(int fingerprint)

  Ask whether a specific QName is disallowed

  Parameters:
    `fingerprint` - the NamePool fingerprint of the QName in question
  Returns:
    true if the QName is in the list of QNames specifically disallowed by this wildcard

### validate

    public boolean validate(SchemaCompiler compiler)
                     throws SchemaException

  Perform validation on this wildcard (this implementation of the method is a no-op)

  Specified by:
    `validate` in interface `UserSchemaComponent`
  Returns:
    true when this Schema definition is valid, otherwise false.
  Throws:
    `SchemaException`

### toString

    public String toString()

  Get a string representation of this wildcard, used for diagnostics

  Overrides:
    `toString` in class `Object`

### isSubset

    public boolean isSubset(Wildcard sup,
                            NamePool pool)

  Determine whether this wildcard is a subset of another wildcard. See Schema Part 1 Schema Component Constraint: Wildcard Subset (section 3.10.6.2)

  Parameters:
    `sup` - the other wildcard
    `pool` - the NamePool

### overlaps

    public boolean overlaps(Wildcard other)

  Determine whether this wildcard overlaps another wildcard, that is, whether there is an element that could match either. Note, this is no longer a defined algorithm in Schema 1.1, but it is still needed to assess UPA.

### isNotStronger

    public static boolean isNotStronger(String str1,
                                        String str2)

  Test whether one processContents value is <= the strength of another, where skip < lax < strict

  Parameters:
    `str1` - the first processContents value, as a string
    `str2` - the second processContents value, as a string
  Returns:
    true if the pair is one of (strict, strict), (lax, lax), (skip, skip), (skip, strict), (lax, strict), (skip, lax)

### compareStrength

    public int compareStrength(Wildcard other)

### makeIntersection

    public static Wildcard makeIntersection(Wildcard wat1,
                                            Wildcard wat2,
                                            NamePool pool)

  Create an AttributeWildcard as the intersection of two AttributeWildcards. For internal use only.

  In XML Schema 1.1, the intersection of two wildcards is always expressible. The resulting wildcard might not be expressible using XML Schema 1.0, however.

  Parameters:
    `wat1` - the first operand: the processContents is taken from this operand
    `wat2` - the second operand
    `pool` - the NamePool
  Returns:
    a new AttributeWildcard representing the intersection, as defined in Schema Component Constraint: Attribute Wildcard Intersection; if the intersection "is not expressible" this will be flagged as such, for later rejection by the validator.

### makeUnion

    public static Wildcard makeUnion(Wildcard wat1,
                                     Wildcard wat2,
                                     NamePool pool)

  Create a AttributeWildcard as the union of two AttributeWildcards. For internal use only.

  Parameters:
    `wat1` - the first operand: the processContents is taken from this operand
    `wat2` - the second operand
    `pool` - the Name Pool
  Returns:
    a new AttributeWildcard representing the intersection, as defined in Schema Component Constraint: Attribute Wildcard Union; if the union "is not expressible" then the result will be marked as such, for later use by the validator.

### serialize

    public void serialize(SchemaModelSerializer serializer)
                   throws XPathException

  Serialize this schema component

  Specified by:
    `serialize` in interface `SerializableSchemaComponent`
  Throws:
    `XPathException`

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