001: /*
002: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
003: *
004: * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
005: *
006: * The contents of this file are subject to the terms of either the GNU
007: * General Public License Version 2 only ("GPL") or the Common Development
008: * and Distribution License("CDDL") (collectively, the "License"). You
009: * may not use this file except in compliance with the License. You can obtain
010: * a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
011: * or glassfish/bootstrap/legal/LICENSE.txt. See the License for the specific
012: * language governing permissions and limitations under the License.
013: *
014: * When distributing the software, include this License Header Notice in each
015: * file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
016: * Sun designates this particular file as subject to the "Classpath" exception
017: * as provided by Sun in the GPL Version 2 section of the License file that
018: * accompanied this code. If applicable, add the following below the License
019: * Header, with the fields enclosed by brackets [] replaced by your own
020: * identifying information: "Portions Copyrighted [year]
021: * [name of copyright owner]"
022: *
023: * Contributor(s):
024: *
025: * If you wish your version of this file to be governed by only the CDDL or
026: * only the GPL Version 2, indicate your decision by adding "[Contributor]
027: * elects to include this software in this distribution under the [CDDL or GPL
028: * Version 2] license." If you don't indicate a single choice of license, a
029: * recipient has the option to distribute your version of this file under
030: * either the CDDL, the GPL Version 2 or to extend the choice of license to
031: * its licensees as provided above. However, if you add GPL Version 2 code
032: * and therefore, elected the GPL Version 2 license, then the option applies
033: * only if the new code is made subject to such option by the copyright
034: * holder.
035: */
036:
037: package com.sun.xml.bind.api;
038:
039: import java.lang.annotation.Annotation;
040: import java.lang.reflect.Type;
041: import java.util.Collection;
042:
043: import javax.xml.namespace.QName;
044:
045: import com.sun.xml.bind.v2.model.nav.Navigator;
046:
047: /**
048: * A reference to a JAXB-bound type.
049: *
050: * <p>
051: * <b>Subject to change without notice</b>.
052: *
053: * @since 2.0 EA1
054: * @author Kohsuke Kawaguchi
055: */
056: public final class TypeReference {
057:
058: /**
059: * The associated XML element name that the JAX-RPC uses with this type reference.
060: *
061: * Always non-null. Strings are interned.
062: */
063: public final QName tagName;
064:
065: /**
066: * The Java type that's being referenced.
067: *
068: * Always non-null.
069: */
070: public final Type type;
071:
072: /**
073: * The annotations associated with the reference of this type.
074: *
075: * Always non-null.
076: */
077: public final Annotation[] annotations;
078:
079: public TypeReference(QName tagName, Type type,
080: Annotation... annotations) {
081: if (tagName == null || type == null || annotations == null)
082: throw new IllegalArgumentException();
083:
084: this .tagName = new QName(tagName.getNamespaceURI().intern(),
085: tagName.getLocalPart().intern(), tagName.getPrefix());
086: this .type = type;
087: this .annotations = annotations;
088: }
089:
090: /**
091: * Finds the specified annotation from the array and returns it.
092: * Null if not found.
093: */
094: public <A extends Annotation> A get(Class<A> annotationType) {
095: for (Annotation a : annotations) {
096: if (a.annotationType() == annotationType)
097: return annotationType.cast(a);
098: }
099: return null;
100: }
101:
102: /**
103: * Creates a {@link TypeReference} for the item type,
104: * if this {@link TypeReference} represents a collection type.
105: * Otherwise returns an identical type.
106: */
107: public TypeReference toItemType() {
108: // if we are to reinstitute this check, check JAXB annotations only
109: // assert annotations.length==0; // not designed to work with adapters.
110:
111: Type base = Navigator.REFLECTION.getBaseClass(type,
112: Collection.class);
113: if (base == null)
114: return this ; // not a collection
115:
116: return new TypeReference(tagName, Navigator.REFLECTION
117: .getTypeArgument(base, 0));
118: }
119: }
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