Package org.codehaus.enunciate.modules.gwt

Source Code of org.codehaus.enunciate.modules.gwt.IsAccessorOfTypeLongMethod

/*
* Copyright 2006-2008 Web Cohesion
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
*   http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/

package org.codehaus.enunciate.modules.gwt;

import com.sun.mirror.type.PrimitiveType;
import freemarker.ext.beans.BeansWrapper;
import freemarker.template.TemplateMethodModelEx;
import freemarker.template.TemplateModel;
import freemarker.template.TemplateModelException;
import net.sf.jelly.apt.decorations.TypeMirrorDecorator;
import net.sf.jelly.apt.decorations.type.DecoratedTypeMirror;
import net.sf.jelly.apt.freemarker.FreemarkerModel;
import org.codehaus.enunciate.apt.EnunciateFreemarkerModel;
import org.codehaus.enunciate.config.SchemaInfo;
import org.codehaus.enunciate.contract.jaxb.Accessor;
import org.codehaus.enunciate.contract.jaxb.ImplicitSchemaElement;
import org.codehaus.enunciate.contract.jaxb.LocalElementDeclaration;
import org.codehaus.enunciate.contract.jaxb.RootElementDeclaration;

import java.util.Calendar;
import java.util.Date;
import java.util.List;
import java.util.Map;

/**
* Template method used to determine whether a given accessor is of type long (special handing for gwt overlay types).
*
* @author Ryan Heaton
*/
public class IsAccessorOfTypeLongMethod implements TemplateMethodModelEx {

  /**
   * Returns the qname of the element that has the first parameter as the namespace, the second as the element.
   *
   * @param list The arguments.
   * @return The qname.
   */
  public Object exec(List list) throws TemplateModelException {
    if (list.size() < 1) {
      throw new TemplateModelException("The isDefinedGlobally method must have a local element declaration as a parameter.");
    }

    TemplateModel from = (TemplateModel) list.get(0);
    Object unwrapped = BeansWrapper.getDefaultInstance().unwrap(from);
    if (Accessor.class.isInstance(unwrapped)) {
      Accessor accessor = (Accessor) unwrapped;
      DecoratedTypeMirror decorated = (DecoratedTypeMirror) TypeMirrorDecorator.decorate(accessor.getAccessorType());
      if (decorated.isPrimitive()) {
        return ((PrimitiveType) decorated).getKind() == PrimitiveType.Kind.LONG;
      }
      else if (decorated.isInstanceOf(Long.class.getName())) {
        return true;
      }
      else if (decorated.isInstanceOf(Date.class.getName())) {
        return true;
      }
      else if (decorated.isInstanceOf(Calendar.class.getName())) {
        return true;
      }
    }
    else {
      throw new TemplateModelException("The IsAccessorOfTypeLong method must have an accessor as a parameter.");
    }

    return false;
  }

  /**
   * Convenience method to lookup a namespace prefix given a namespace.
   *
   * @param namespace The namespace for which to lookup the prefix.
   * @return The namespace prefix.
   */
  protected String lookupPrefix(String namespace) {
    return getNamespacesToPrefixes().get(namespace);
  }

  /**
   * The namespace to prefix map.
   *
   * @return The namespace to prefix map.
   */
  protected static Map<String, String> getNamespacesToPrefixes() {
    return getModel().getNamespacesToPrefixes();
  }

  /**
   * Get the current root model.
   *
   * @return The current root model.
   */
  protected static EnunciateFreemarkerModel getModel() {
    return ((EnunciateFreemarkerModel) FreemarkerModel.get());
  }

}
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