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package com.sun.tools.internal.xjc.reader.xmlschema.ct;

import com.sun.tools.internal.xjc.model.CClass;

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

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

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

/**

 * Binds a complex type derived from another complex type by extension.

 *

 * @author

 *     Kohsuke Kawaguchi (kohsuke.kawaguchi@sun.com)

 */

final class ExtendedComplexTypeBuilder extends AbstractExtendedComplexTypeBuilder {

    public boolean isApplicable(XSComplexType ct) {

        XSType baseType = ct.getBaseType();

        return baseType!=schemas.getAnyType()

            &&  baseType.isComplexType()

            &&  ct.getDerivationMethod()==XSType.EXTENSION;

    }

    public void build(XSComplexType ct) {

        XSComplexType baseType = ct.getBaseType().asComplexType();

        // build the base class

        CClass baseClass = selector.bindToType(baseType, ct, true);

        assert baseClass != null;   // global complex type must map to a class

        selector.getCurrentBean().setBaseClass(baseClass);

        // derivation by extension.

        ComplexTypeBindingMode baseTypeFlag = builder.getBindingMode(baseType);

        XSContentType explicitContent = ct.getExplicitContent();

        if (!checkIfExtensionSafe(baseType, ct)) {

            // error. We can't handle any further extension

            errorReceiver.error(ct.getLocator(),

                    Messages.ERR_NO_FURTHER_EXTENSION.format(

                    baseType.getName(), ct.getName() )

            );

            return;

        }

        // explicit content is always either empty or a particle.

        if (explicitContent != null && explicitContent.asParticle() != null) {

            if (baseTypeFlag == ComplexTypeBindingMode.NORMAL) {

                // if we have additional explicit content, process them.

                builder.recordBindingMode(ct,

                        bgmBuilder.getParticleBinder().checkFallback(explicitContent.asParticle())

                        ? ComplexTypeBindingMode.FALLBACK_REST

                        : ComplexTypeBindingMode.NORMAL);

                bgmBuilder.getParticleBinder().build(explicitContent.asParticle());

            } else {

                // the base class has already done the fallback.

                // don't add anything new

                builder.recordBindingMode(ct, baseTypeFlag );

            }

        } else {

            // if it's empty, no additional processing is necessary

            builder.recordBindingMode(ct, baseTypeFlag);

        }

        // adds attributes and we are through.

        green.attContainer(ct);

    }

}