org.apache.cxf.common.xmlschema

## Class XmlSchemaUtils

- java.lang.Object
- - org.apache.cxf.common.xmlschema.XmlSchemaUtils

-     public final class XmlSchemaUtils
      extends Object

  Some functions that avoid problems with Commons XML Schema.

- - ### Field Summary

    Fields
    Modifier and Type | Field and Description
    --- | ---
    `static String` | `XSI_NIL`

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `static void` | `addImportIfNeeded(org.apache.ws.commons.schema.XmlSchema schema, QName qname)` For convenience, start from a qname, and add the import if it is non-null and has a namespace.
    `static void` | `addImportIfNeeded(org.apache.ws.commons.schema.XmlSchema schema, String namespaceUri)` Assist in managing the required for imports of peer schemas.
    `static List<String>` | `enumeratorValues(org.apache.ws.commons.schema.XmlSchemaSimpleType type)` Retrieve the string values for an enumeration.
    `static org.apache.ws.commons.schema.XmlSchemaElement` | `findElementByRefName(SchemaCollection xmlSchemaCollection, QName name, String referencingURI)` This copes with an observed phenomenon in the schema built by the ReflectionServiceFactoryBean.
    `static QName` | `getBaseType(org.apache.ws.commons.schema.XmlSchemaComplexType type)`
    `static List<org.apache.ws.commons.schema.XmlSchemaAttributeOrGroupRef>` | `getContentAttributes(org.apache.ws.commons.schema.XmlSchemaComplexType type)`
    `static List<org.apache.ws.commons.schema.XmlSchemaAnnotated>` | `getContentAttributes(org.apache.ws.commons.schema.XmlSchemaComplexType type, SchemaCollection collection)`
    `static QName` | `getElementQualifiedName(org.apache.ws.commons.schema.XmlSchemaElement element, org.apache.ws.commons.schema.XmlSchema schema)` By convention, an element that is named in its schema's TNS can have a 'name' but no QName.
    `static boolean` | `isAttributeNameQualified(org.apache.ws.commons.schema.XmlSchemaAttribute attribute, org.apache.ws.commons.schema.XmlSchema schema)`
    `static boolean` | `isAttributeQualified(org.apache.ws.commons.schema.XmlSchemaAttribute attribute, boolean global, org.apache.ws.commons.schema.XmlSchema localSchema, org.apache.ws.commons.schema.XmlSchema attributeSchema)` due to a bug, feature, or just plain oddity of JAXB, it isn't good enough to just check the form of an element and of its schema.
    `static boolean` | `isElementNameQualified(org.apache.ws.commons.schema.XmlSchemaElement element, org.apache.ws.commons.schema.XmlSchema schema)`
    `static boolean` | `isElementQualified(org.apache.ws.commons.schema.XmlSchemaElement element, boolean global, org.apache.ws.commons.schema.XmlSchema localSchema, org.apache.ws.commons.schema.XmlSchema elementSchema)` due to a bug, feature, or just plain oddity of JAXB, it isn't good enough to just check the form of an element and of its schema.
    `static boolean` | `isEumeration(org.apache.ws.commons.schema.XmlSchemaSimpleType type)` Return true if a simple type is a straightforward XML Schema representation of an enumeration.
    `static boolean` | `isParticleArray(org.apache.ws.commons.schema.XmlSchemaParticle particle)`
    `static boolean` | `isParticleOptional(org.apache.ws.commons.schema.XmlSchemaParticle particle)`
    `static boolean` | `schemaImportsNamespace(org.apache.ws.commons.schema.XmlSchema schema, String namespaceUri)` Is there an import for a particular namespace in a schema?
    `static void` | `setElementRefName(org.apache.ws.commons.schema.XmlSchemaElement element, QName name)` Wrapper around XmlSchemaElement.setRefName that checks for inconsistency with name and QName.

    - ### Methods inherited from class java.lang.Object

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

- - ### Field Detail

    - #### XSI_NIL

          public static final String XSI_NIL

      See Also:
        Constant Field Values

  - ### Method Detail

    - #### setElementRefName

          public static void setElementRefName(org.apache.ws.commons.schema.XmlSchemaElement element,
                               QName name)

      Wrapper around XmlSchemaElement.setRefName that checks for inconsistency with name and QName.
      Parameters:
        `element` -
        `name` -

    - #### isEumeration

          public static boolean isEumeration(org.apache.ws.commons.schema.XmlSchemaSimpleType type)

      Return true if a simple type is a straightforward XML Schema representation of an enumeration. If we discover schemas that are 'enum-like' with more complex structures, we might make this deal with them.
      Parameters:
        `type` - Simple type, possible an enumeration.
      Returns:
        true for an enumeration.

    - #### enumeratorValues

          public static List<String> enumeratorValues(org.apache.ws.commons.schema.XmlSchemaSimpleType type)

      Retrieve the string values for an enumeration.
      Parameters:
        `type` -

    - #### schemaImportsNamespace

          public static boolean schemaImportsNamespace(org.apache.ws.commons.schema.XmlSchema schema,
                                       String namespaceUri)

      Is there an import for a particular namespace in a schema?
      Parameters:
        `schema` -
        `namespaceUri` -

    - #### addImportIfNeeded

          public static void addImportIfNeeded(org.apache.ws.commons.schema.XmlSchema schema,
                               String namespaceUri)

      Assist in managing the required for imports of peer schemas.
      Parameters:
        `schema` -
        `namespaceUri` -

    - #### addImportIfNeeded

          public static void addImportIfNeeded(org.apache.ws.commons.schema.XmlSchema schema,
                               QName qname)

      For convenience, start from a qname, and add the import if it is non-null and has a namespace.
      Parameters:
        `schema` -
        `qname` -
      See Also:
        `addImportIfNeeded(XmlSchema, String)`

    - #### findElementByRefName

          public static org.apache.ws.commons.schema.XmlSchemaElement findElementByRefName(SchemaCollection xmlSchemaCollection,
                                                                           QName name,
                                                                           String referencingURI)

      This copes with an observed phenomenon in the schema built by the ReflectionServiceFactoryBean. It is creating element such that: (a) the type is not set. (b) the refName is set. (c) the namespaceURI in the refName is set empty. This apparently indicates 'same Schema' to everyone else, so thus function implements that convention here. It is unclear if that is a correct structure, and it if changes, we can simplify or eliminate this function.
      Parameters:
        `name` -
        `referencingURI` -

    - #### getBaseType

          public static QName getBaseType(org.apache.ws.commons.schema.XmlSchemaComplexType type)

    - #### getContentAttributes

          public static List<org.apache.ws.commons.schema.XmlSchemaAttributeOrGroupRef> getContentAttributes(org.apache.ws.commons.schema.XmlSchemaComplexType type)

    - #### getContentAttributes

          public static List<org.apache.ws.commons.schema.XmlSchemaAnnotated> getContentAttributes(org.apache.ws.commons.schema.XmlSchemaComplexType type,
                                                                                   SchemaCollection collection)

    - #### getElementQualifiedName

          public static QName getElementQualifiedName(org.apache.ws.commons.schema.XmlSchemaElement element,
                                      org.apache.ws.commons.schema.XmlSchema schema)

      By convention, an element that is named in its schema's TNS can have a 'name' but no QName. This can get inconvenient for consumers who want to think about qualified names. Unfortunately, XmlSchema elements, unlike types, don't store a reference to their containing schema.
      Parameters:
        `element` -
        `schema` -

    - #### isAttributeNameQualified

          public static boolean isAttributeNameQualified(org.apache.ws.commons.schema.XmlSchemaAttribute attribute,
                                         org.apache.ws.commons.schema.XmlSchema schema)

    - #### isAttributeQualified

          public static boolean isAttributeQualified(org.apache.ws.commons.schema.XmlSchemaAttribute attribute,
                                     boolean global,
                                     org.apache.ws.commons.schema.XmlSchema localSchema,
                                     org.apache.ws.commons.schema.XmlSchema attributeSchema)

      due to a bug, feature, or just plain oddity of JAXB, it isn't good enough to just check the form of an element and of its schema. If schema 'a' (default unqualified) has a complex type with an element with a ref= to schema (b) (default unqualified), JAXB seems to expect to see a qualifier, anyway.
      So, if the element is local to a complex type, all we care about is the default element form of the schema and the local form of the element.
      If, on the other hand, the element is global, we might need to compare namespaces.
      Parameters:
        `attribute` - the attribute
        `global` - if this element is a global element (complex type ref= to it, or in a part)
        `localSchema` - the schema of the complex type containing the reference, only used for the 'odd case'.
        `attributeSchema` - the schema for the element.
      Returns:
        if the element needs to be qualified.

    - #### isElementNameQualified

          public static boolean isElementNameQualified(org.apache.ws.commons.schema.XmlSchemaElement element,
                                       org.apache.ws.commons.schema.XmlSchema schema)

    - #### isElementQualified

          public static boolean isElementQualified(org.apache.ws.commons.schema.XmlSchemaElement element,
                                   boolean global,
                                   org.apache.ws.commons.schema.XmlSchema localSchema,
                                   org.apache.ws.commons.schema.XmlSchema elementSchema)

      due to a bug, feature, or just plain oddity of JAXB, it isn't good enough to just check the form of an element and of its schema. If schema 'a' (default unqualified) has a complex type with an element with a ref= to schema (b) (default unqualified), JAXB seems to expect to see a qualifier, anyway.
      So, if the element is local to a complex type, all we care about is the default element form of the schema and the local form of the element.
      If, on the other hand, the element is global, we might need to compare namespaces.
      Parameters:
        `element` - the element.
        `global` - if this element is a global element (complex type ref= to it, or in a part)
        `localSchema` - the schema of the complex type containing the reference, only used for the 'odd case'.
        `elementSchema` - the schema for the element.
      Returns:
        if the element needs to be qualified.

    - #### isParticleArray

          public static boolean isParticleArray(org.apache.ws.commons.schema.XmlSchemaParticle particle)

    - #### isParticleOptional

          public static boolean isParticleOptional(org.apache.ws.commons.schema.XmlSchemaParticle particle)

Apache CXF