org.exolab.castor.types.BaseDescriptor Maven / Gradle / Ivy
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/*
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* without modification, are permitted provided that the following conditions are met:
*
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* must also contain a copy of this document.
*
* 2. Redistributions in binary form must reproduce the above copyright notice, this list of
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* the distribution.
*
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* without prior written permission of Intalio, Inc. For written permission, please contact
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*
* 4. Products derived from this Software may not be called "Exolab" nor may "Exolab" appear in
* their names without prior written permission of Intalio, Inc. Exolab is a registered trademark of
* Intalio, Inc.
*
* 5. Due credit should be given to the Exolab Project (http://www.exolab.org/).
*
* THIS SOFTWARE IS PROVIDED BY INTALIO, INC. AND CONTRIBUTORS ``AS IS'' AND ANY EXPRESSED OR
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
* WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Copyright 2003 (C) Intalio, Inc. All Rights Reserved.
*
* $Id$
*/
package org.exolab.castor.types;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import org.exolab.castor.mapping.AccessMode;
import org.exolab.castor.mapping.ClassDescriptor;
import org.exolab.castor.mapping.FieldDescriptor;
import org.exolab.castor.xml.NodeType;
import org.exolab.castor.xml.TypeValidator;
import org.exolab.castor.xml.UnmarshalState;
import org.exolab.castor.xml.ValidationException;
import org.exolab.castor.xml.XMLClassDescriptor;
import org.exolab.castor.xml.XMLFieldDescriptor;
/**
* The Base Descriptor class, this class is extended by the descriptors for the custom Castor schema
* types.
*
* @author Keith Visco
* @version $Revision$ $Date: 2004-12-16 22:49:25 -0700 (Thu, 16 Dec 2004) $
*/
public class BaseDescriptor implements XMLClassDescriptor {
/** Used for returning no attribute and no element fields */
protected static final XMLFieldDescriptor[] noXMLFields = new XMLFieldDescriptor[0];
/** Used for returning no attribute and no element fields */
private static final FieldDescriptor[] noJavaFields = new FieldDescriptor[0];
/** The name of the XML element. */
private String _xmlName = null;
/** The class type for the descriptor */
private Class _class = null;
/**
* Map holding the properties set and read by Natures.
*/
private Map _properties = new HashMap();
/**
* Map holding the available natures.
*/
private Set _natures = new HashSet();
protected BaseDescriptor(String xmlName, Class type) {
super();
_xmlName = xmlName;
_class = type;
} // -- BaseDescriptor
/**
* Returns the set of XMLFieldDescriptors for all members that should be marshalled as XML
* attributes.
*
* @return an array of XMLFieldDescriptors for all members that should be marshalled as XML
* attributes.
*/
public XMLFieldDescriptor[] getAttributeDescriptors() {
return noXMLFields;
} // getAttributeDescriptors
/**
* Returns the XMLFieldDescriptor for the member that should be marshalled as text content.
*
* @return the XMLFieldDescriptor for the member that should be marshalled as text content.
*/
public XMLFieldDescriptor getContentDescriptor() {
return null;
} // getContentDescriptor
/**
* Returns the set of XMLFieldDescriptors for all members that should be marshalled as XML
* elements.
*
* @return an array of XMLFieldDescriptors for all members that should be marshalled as XML
* elements.
*/
public XMLFieldDescriptor[] getElementDescriptors() {
return noXMLFields;
} // getElementDescriptors
/**
* Returns the XML field descriptor matching the given xml name and nodeType. If NodeType is null,
* then either an AttributeDescriptor, or ElementDescriptor may be returned. Null is returned if
* no matching descriptor is available.
*
* @param name The xml name to match against.
* @param namespace The namespace uri.
* @param nodeType The NodeType to match against, or null if the node type is not known.
* @return The matching descriptor, or null if no matching descriptor is available.
*/
public XMLFieldDescriptor getFieldDescriptor(String name, String namespace, NodeType nodeType) {
return null;
} // -- getFieldDescriptor
/**
* @return the namespace prefix to use when marshalling as XML.
*/
public String getNameSpacePrefix() {
return null;
} // -- getNameSpacePrefix
/**
* @return the namespace URI used when marshalling and unmarshalling as XML.
*/
public String getNameSpaceURI() {
return null;
} // -- getNameSpaceURI
/**
* Returns a specific validator for the class described by this ClassDescriptor. A null value may
* be returned if no specific validator exists.
*
* @return the type validator for the class described by this ClassDescriptor.
*/
public TypeValidator getValidator() {
return null;
} // -- getValidator
/**
* Returns the XML Name for the Class being described.
*
* @return the XML name.
*/
public String getXMLName() {
return _xmlName;
} // -- getXMLName
/**
* Returns the String representation of this XMLClassDescriptor.
*
* @return the String representation of this XMLClassDescriptor.
*/
public String toString() {
String className = null;
Class type = getJavaClass();
if (type != null) {
className = type.getName();
} else {
className = "unspecified";
}
return super.toString() + "; descriptor for class: " + className + "; xml name: "
+ getXMLName();
} // -- toString
/**
* Returns the Java class represented by this descriptor.
*
* @return The Java class
*/
public Class getJavaClass() {
return _class;
} // -- getJavaClass
/**
* Returns a list of fields represented by this descriptor.
*
* @return A list of fields
*/
public FieldDescriptor[] getFields() {
return noJavaFields;
} // -- getFields
/**
* Returns the class descriptor of the class extended by this class.
*
* @return The extended class descriptor
*/
public ClassDescriptor getExtends() {
return null;
} // -- getExtends
/**
* Returns the identity field, null if this class has no identity.
*
* @return The identity field
*/
public FieldDescriptor getIdentity() {
return null;
} // -- getIdentity
/**
* Returns the access mode specified for this class.
*
* @return The access mode
*/
public AccessMode getAccessMode() {
return null;
} // -- getAccessMode
/**
* Returns true if the given object represented by this XMLClassDescriptor can accept a member
* whose name is given. An XMLClassDescriptor can accept a field if it contains a descriptor that
* matches the given name and if the given object can hold this field (i.e a value is not already
* set for this field).
*
* This is mainly used for container object (that can contains other object), in this particular
* case the implementation will return null.
*
* @param name the xml name of the field to check
* @param namespace the namespace uri
* @param object the object represented by this XMLCLassDescriptor
* @return true if the given object represented by this XMLClassDescriptor can accept a member
* whose name is given.
*/
public boolean canAccept(String name, String namespace, Object object) {
return false;
}
/**
* {@inheritDoc}
*
* @see org.exolab.castor.xml.XMLClassDescriptor#checkDescriptorForCorrectOrderWithinSequence(org.exolab.castor.xml.XMLFieldDescriptor,
* org.exolab.castor.xml.UnmarshalState, java.lang.String)
*/
public void checkDescriptorForCorrectOrderWithinSequence(
final XMLFieldDescriptor elementDescriptor, final UnmarshalState parentState,
final String xmlName) throws ValidationException {
// nothing to check, iow empty implementation
}
/**
* {@inheritDoc}
*
* @see org.exolab.castor.xml.XMLClassDescriptor#isChoice()
*/
public boolean isChoice() {
return false;
}
/**
* @see org.exolab.castor.builder.info.nature.PropertyHolder# getProperty(java.lang.String)
* @param name of the property
* @return value of the property
*/
public Object getProperty(final String name) {
return _properties.get(name);
}
/**
* @see org.exolab.castor.builder.info.nature.PropertyHolder# setProperty(java.lang.String,
* java.lang.Object)
* @param name of the property
* @param value of the property
*/
public void setProperty(final String name, final Object value) {
_properties.put(name, value);
}
/**
* @see org.exolab.castor.builder.info.nature.NatureExtendable# addNature(java.lang.String)
* @param nature ID of the Nature
*/
public void addNature(final String nature) {
_natures.add(nature);
}
/**
* @see org.exolab.castor.builder.info.nature.NatureExtendable# hasNature(java.lang.String)
* @param nature ID of the Nature
* @return true if the Nature ID was added.
*/
public boolean hasNature(final String nature) {
return _natures.contains(nature);
}
} // -- BaseDescriptor