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 * Copyright (c) 1997, 2015, Oracle and/or its affiliates. All rights reserved.

 * 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.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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 */

package com.sun.tools.internal.xjc.model;

import java.lang.annotation.Annotation;

import java.util.Collection;

import java.util.Map;

import javax.xml.XMLConstants;

import javax.xml.bind.annotation.XmlInlineBinaryData;

import javax.xml.bind.annotation.XmlSchemaType;

import javax.xml.bind.annotation.XmlTransient;

import javax.xml.bind.annotation.adapters.XmlJavaTypeAdapter;

import javax.xml.namespace.QName;

import com.sun.codemodel.internal.JClass;

import com.sun.codemodel.internal.JJavaName;

import com.sun.codemodel.internal.JType;

import com.sun.tools.internal.xjc.Plugin;

import com.sun.tools.internal.xjc.generator.bean.field.FieldRenderer;

import com.sun.tools.internal.xjc.model.nav.NClass;

import com.sun.tools.internal.xjc.model.nav.NType;

import com.sun.tools.internal.xjc.reader.Ring;

import com.sun.xml.internal.bind.api.impl.NameConverter;

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

import com.sun.xml.internal.bind.v2.runtime.RuntimeUtil;

import com.sun.xml.internal.xsom.XSComponent;

import org.xml.sax.ErrorHandler;

import org.xml.sax.Locator;

/**

 * Model of a property to be generated.

 *

 * @author Kohsuke Kawaguchi

 */

public abstract class CPropertyInfo implements PropertyInfo<NType,NClass>, CCustomizable {

    @XmlTransient

    private CClassInfo parent;

    private String privateName;

    private String publicName;

    private final boolean isCollection;

    @XmlTransient

    public final Locator locator;

    /**

     * @see #getSchemaComponent()

     */

    private final XSComponent source;

    /**

     * If the base type of the property is overriden,

     * this field is set to non-null.

     */

    public JType baseType;

    /**

     * Javadoc for this property. Must not be null.

     */

    public String javadoc="";

    /**

     * Property annotated with {@link javax.xml.bind.annotation.XmlInlineBinaryData}.

     */

    public boolean inlineBinaryData;

    /**

     * Specifies how the field is generated by the backend.

     */

    @XmlJavaTypeAdapter(RuntimeUtil.ToStringAdapter.class)

    public FieldRenderer realization;

    /**

     * If non-null, keeps the default value in Java representation.

     *

     * If {@link #isCollection} is true, this field is always null,

     * for we don't handle default values for a list.

     */

    public CDefaultValue defaultValue;

    private final CCustomizations customizations;

    protected CPropertyInfo(String name, boolean collection, XSComponent source,

                            CCustomizations customizations, Locator locator) {

        this.publicName = name;

        String n = null;

        Model m = Ring.get(Model.class);

        if (m != null) {

            n = m.getNameConverter().toVariableName(name);

        } else {

            n = NameConverter.standard.toVariableName(name);

        }

        if(!JJavaName.isJavaIdentifier(n))

            n = '_'+n;  // avoid colliding with the reserved names like 'abstract'.

        this.privateName = n;

        this.isCollection = collection;

        this.locator = locator;

        if(customizations==null)

            this.customizations = CCustomizations.EMPTY;

        else

            this.customizations = customizations;

        this.source = source;

    }

    // called from CClassInfo when added

    final void setParent( CClassInfo parent ) {

        assert this.parent==null;

        assert parent!=null;

        this.parent = parent;

        customizations.setParent(parent.model,this);

    }

    public CTypeInfo parent() {

        return parent;

    }

    public Locator getLocator() {

        return locator;

    }

    /**

     * If this model object is built from XML Schema,

     * this property returns a schema component from which the model is built.

     *

     * @return

     *      null if the model is built from sources other than XML Schema

     *      (such as DTD.)

     */

    public final XSComponent getSchemaComponent() {

        return source;

    }

    public abstract CAdapter getAdapter();

    /**

     * Name of the property.

     *

     * <p>

     * This method is implemented to follow the contract of

     * {@link PropertyInfo#getName()}, and therefore it always

     * returns the name of the annotated field.

     * <p>

     * This name is normally not useful for the rest of XJC,

     * which usually wants to access the "public name" of the property.

     * A "public name" of the property is a name like "FooBar" which

     * is used as a seed for generating the accessor methods.

     * This is the name controlled by the schema customization via users.

     *

     * <p>

     * If the caller is calling this method statically, it's usually

     * the sign of a mistake. Use {@link #getName(boolean)} method instead,

     * which forces you to think about which name you want to get.

     *

     * @deprecated

     *      marked as deprecated so that we can spot the use of this method.

     *

     * @see #getName(boolean)

     */

    public String getName() {

        return getName(false);

    }

    /**

     * Gets the name of the property.

     *

     * @param isPublic

     *      if true, this method returns a name like "FooBar", which

     *      should be used as a seed for generating user-visible names

     *      (such as accessors like "getFooBar".)

     *

     *      <p>

     *      if false, this method returns the "name of the property"

     *      as defined in the j2s side of the spec. This name is usually

     *      something like "fooBar", which often corresponds to the XML

     *      element/attribute name of this property (for taking advantage

     *      of annotation defaulting as much as possible)

     */

    public String getName(boolean isPublic) {

        return isPublic?publicName:privateName;

    }

    /**

     * Overrides the name of the property.

     *

     * This method can be used from {@link Plugin#postProcessModel(Model, ErrorHandler)}.

     * But the caller should do so with the understanding that this is inherently

     * dangerous method.

     */

    public void setName(boolean isPublic, String newName) {

        if(isPublic)

            publicName = newName;

        else

            privateName = newName;

    }

    public String displayName() {

        return parent.toString()+'#'+getName(false);

    }

    public boolean isCollection() {

        return isCollection;

    }

    public abstract Collection<? extends CTypeInfo> ref();

    /**

     * Returns true if this property is "unboxable".

     *

     * <p>

     * In general, a property often has to be capable of representing null

     * to indicate the absence of the value. This requires properties

     * to be generated as {@code @XmlElement Float f}, not as

     * {@code @XmlElement float f;}. But this is slow.

     *

     * <p>

     * Fortunately, there are cases where we know that the property can

     * never legally be absent. When this condition holds we can generate

     * the optimized "unboxed form".

     *

     * <p>

     * The exact such conditions depend

     * on the kind of properties, so refer to the implementation code

     * for the details.

     *

     * <p>

     * This method returns true when the property can be generated

     * as "unboxed form", false otherwise.

     *

     * <p>

     * When this property is a collection, this method returns true

     * if items in the collection is unboxable. Obviously, the collection

     * itself is always a reference type.

     */

    public boolean isUnboxable() {

        Collection<? extends CTypeInfo> ts = ref();

        if(ts.size()!=1)

            // if the property is heterogeneous, no way.

            // ts.size()==0 is a special case that can happen for wildcards.

            return false;

        if(baseType!=null && (baseType instanceof JClass))

            return false;

        CTypeInfo t = ts.iterator().next();

        // only a primitive type is eligible.

        return t.getType().isBoxedType();

    }

    /**

     * Returns true if this property needs to represent null

     * just for the purpose of representing an absence of the property.

     */

    public boolean isOptionalPrimitive() {

        return false;

    }

    public CCustomizations getCustomizations() {

        return customizations;

    }

    public boolean inlineBinaryData() {

        return inlineBinaryData;

    }

    public abstract <V> V accept( CPropertyVisitor<V> visitor );

    public abstract <R, P> R accept( CPropertyVisitor2<R, P> visitor, P p );

    /**

     * Checks if the given {@link TypeUse} would need an explicit {@link XmlSchemaType}

     * annotation with the given type name.

     */

    protected static boolean needsExplicitTypeName(TypeUse type, QName typeName) {

        if(typeName==null)

            // this is anonymous type. can't have @XmlSchemaType

            return false;

        if(!XMLConstants.W3C_XML_SCHEMA_NS_URI.equals(typeName.getNamespaceURI()))

            // if we put application-defined type name, it will be undefined

            // by the time we generate a schema.

            return false;

        if(type.isCollection())

            // there's no built-in binding for a list simple type,

            // so any collection type always need @XmlSchemaType

            return true;

        QName itemType = type.getInfo().getTypeName();

        if(itemType==null)

            // this is somewhat strange case, as it means the bound type is anonymous

            // but it's eventually derived by a named type and used.

            // but we can certainly use typeName as @XmlSchemaType value here

            return true;

        // if it's the default type name for this item, then no need

        return !itemType.equals(typeName);

    }

    /**

     * Puts the element names that this property possesses to the map,

     * so that we can find two properties that own the same element name,

     * which is an error.

     *

     * @return

     *      null if no conflict was found. Otherwise return the QName that has the collision.

     */

    public QName collectElementNames(Map<QName,CPropertyInfo> table) {

        return null;

    }

    public final <A extends Annotation> A readAnnotation(Class<A> annotationType) {

        throw new UnsupportedOperationException();

    }

    public final boolean hasAnnotation(Class<? extends Annotation> annotationType) {

        throw new UnsupportedOperationException();

    }

}