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

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

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 * 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,

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package com.sun.xml.internal.bind.v2.model.impl;

import java.util.Arrays;

import java.util.Collection;

import java.util.Map;

import javax.xml.bind.annotation.XmlElementWrapper;

import javax.xml.namespace.QName;

import com.sun.xml.internal.bind.v2.model.core.MapPropertyInfo;

import com.sun.xml.internal.bind.v2.model.core.NonElement;

import com.sun.xml.internal.bind.v2.model.core.PropertyKind;

import com.sun.xml.internal.bind.v2.model.core.TypeInfo;

/**

 * @author Kohsuke Kawaguchi

 */

class MapPropertyInfoImpl<T,C,F,M> extends PropertyInfoImpl<T,C,F,M> implements MapPropertyInfo<T,C> {

    private final QName xmlName;

    private boolean nil;

    private final T keyType;

    private final T valueType;

    // laziy computed to handle cyclic references

    private NonElement<T,C> keyTypeInfo;

    private NonElement<T,C> valueTypeInfo;

    public MapPropertyInfoImpl(ClassInfoImpl<T,C,F,M> ci, PropertySeed<T,C,F,M> seed) {

        super(ci, seed);

        XmlElementWrapper xe = seed.readAnnotation(XmlElementWrapper.class);

        xmlName = calcXmlName(xe);

        nil = xe!=null && xe.nillable();

        T raw = getRawType();

        T bt = nav().getBaseClass(raw, nav().asDecl(Map.class) );

        assert bt!=null;    // Map property is only for Maps

        if(nav().isParameterizedType(bt)) {

            keyType = nav().getTypeArgument(bt,0);

            valueType = nav().getTypeArgument(bt,1);

        } else {

            keyType = valueType = nav().ref(Object.class);

        }

    }

    public Collection<? extends TypeInfo<T,C>> ref() {

        return Arrays.asList(getKeyType(),getValueType());

    }

    public final PropertyKind kind() {

        return PropertyKind.MAP;

    }

    public QName getXmlName() {

        return xmlName;

    }

    public boolean isCollectionNillable() {

        return nil;

    }

    public NonElement<T,C> getKeyType() {

        if(keyTypeInfo==null)

            keyTypeInfo = getTarget(keyType);

        return keyTypeInfo;

    }

    public NonElement<T,C> getValueType() {

        if(valueTypeInfo==null)

            valueTypeInfo = getTarget(valueType);

        return valueTypeInfo;

    }

    public NonElement<T,C> getTarget(T type) {

        assert parent.builder!=null : "this method must be called during the build stage";

        return parent.builder.getTypeInfo(type,this);

    }

}