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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

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package com.sun.xml.internal.ws.spi.db;

import java.lang.annotation.Annotation;

import java.lang.reflect.GenericArrayType;

import java.lang.reflect.Type;

import java.util.Collection;

import java.util.HashMap;

import java.util.Map;

import javax.xml.namespace.QName;

/**

 * A reference to a JAXB-bound type.

 *

 * <p>

 * <b>Subject to change without notice</b>.

 *

 * @since 2.0 EA1

 * @author Kohsuke Kawaguchi

 * @author shih-chang.chen@oracle.com

 */

public final class TypeInfo {

    /**

     * The associated XML element name that the JAX-RPC uses with this type reference.

     *

     * Always non-null. Strings are interned.

     */

    public final QName tagName;

    /**

     * The Java type that's being referenced.

     *

     * Always non-null.

     */

    public Type type;

    /**

     * The annotations associated with the reference of this type.

     *

     * Always non-null.

     */

    public final Annotation[] annotations;

    private Map<String, Object> properties = new HashMap<String, Object>();

    private boolean isGlobalElement = true;

    private TypeInfo parentCollectionType;

    private Type genericType;

    private boolean nillable = true;

    public TypeInfo(QName tagName, Type type, Annotation... annotations) {

        if(tagName==null || type==null || annotations==null) {

            String nullArgs = "";

            if(tagName == null)     nullArgs = "tagName";

            if(type == null)        nullArgs += (nullArgs.length() > 0 ? ", type" : "type");

            if(annotations == null) nullArgs += (nullArgs.length() > 0 ? ", annotations" : "annotations");

//            Messages.ARGUMENT_CANT_BE_NULL.format(nullArgs);

            throw new IllegalArgumentException( "Argument(s) \"" + nullArgs + "\" can''t be null.)");

        }

        this.tagName = new QName(tagName.getNamespaceURI().intern(), tagName.getLocalPart().intern(), tagName.getPrefix());

        this.type = type;

        if (type instanceof Class && ((Class<?>)type).isPrimitive()) nillable = false;

        this.annotations = annotations;

    }

    /**

     * Finds the specified annotation from the array and returns it.

     * Null if not found.

     */

    public <A extends Annotation> A get( Class<A> annotationType ) {

        for (Annotation a : annotations) {

            if(a.annotationType()==annotationType)

                return annotationType.cast(a);

        }

        return null;

    }

    /**

     * Creates a {@link TypeInfo} for the item type,

     * if this {@link TypeInfo} represents a collection type.

     * Otherwise returns an identical type.

     */

    public TypeInfo toItemType() {

        // if we are to reinstitute this check, check JAXB annotations only

        // assert annotations.length==0;   // not designed to work with adapters.

        Type t = (genericType != null)? genericType : type;

        Type base = Utils.REFLECTION_NAVIGATOR.getBaseClass(t, Collection.class);

        if(base==null)

            return this;    // not a collection

        return new TypeInfo(tagName, Utils.REFLECTION_NAVIGATOR.getTypeArgument(base,0));

    }

    public Map<String, Object> properties() {

                return properties;

        }

        public boolean isGlobalElement() {

                return isGlobalElement;

        }

        public void setGlobalElement(boolean isGlobalElement) {

                this.isGlobalElement = isGlobalElement;

        }

        public TypeInfo getParentCollectionType() {

                return parentCollectionType;

        }

        public void setParentCollectionType(TypeInfo parentCollectionType) {

                this.parentCollectionType = parentCollectionType;

        }

        public boolean isRepeatedElement() {

                return (parentCollectionType != null);

        }

        public Type getGenericType() {

                return genericType;

        }

        public void setGenericType(Type genericType) {

                this.genericType = genericType;

        }

    public boolean isNillable() {

        return nillable;

    }

    public void setNillable(boolean nillable) {

        this.nillable = nillable;

    }

    public String toString() {

        return new StringBuilder("TypeInfo: Type = ").append(type)

                .append(", tag = ").append(tagName).toString();

    }

    public TypeInfo getItemType() {

        if (type instanceof Class && ((Class)type).isArray() && !byte[].class.equals(type)) {

            Type componentType = ((Class)type).getComponentType();

            Type genericComponentType = null;

            if (genericType!= null && genericType instanceof GenericArrayType) {

                GenericArrayType arrayType = (GenericArrayType) type;

                genericComponentType = arrayType.getGenericComponentType();

                componentType = arrayType.getGenericComponentType();

            }

            TypeInfo ti =new TypeInfo(tagName, componentType, annotations);

            if (genericComponentType != null) ti.setGenericType(genericComponentType);

            return ti;

        }

//        if (type instanceof Class && java.util.Collection.class.isAssignableFrom((Class)type)) {

        Type t = (genericType != null)? genericType : type;

        Type base = Utils.REFLECTION_NAVIGATOR.getBaseClass(t, Collection.class);

        if ( base != null)  {

            return new TypeInfo(tagName, Utils.REFLECTION_NAVIGATOR.getTypeArgument(base,0), annotations);

        }

        return null;

    }

}