org.dozer.propertydescriptor.XmlBeanPropertyDescriptor Maven / Gradle / Ivy

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Dozer is a powerful Java Bean to Java Bean mapper that recursively copies data from one object to another

There is a newer version: 5.5.1

/*
 * Copyright 2005-2010 the original author or authors.
 *
 * 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.dozer.propertydescriptor;

/**
 * @author Stuntmunkee
 */
import org.dozer.fieldmap.FieldMap;
import org.dozer.fieldmap.HintContainer;

public class XmlBeanPropertyDescriptor implements DozerPropertyDescriptor {

  private static final String IS_SET_PREFIX = "set";

  private static final String DOT = ".";

  private final JavaBeanPropertyDescriptor fieldPropertyDescriptor;

  private final JavaBeanPropertyDescriptor isSetFieldPropertyDescriptor;

  public XmlBeanPropertyDescriptor(Class clazz, String fieldName, boolean isIndexed, int index,
      HintContainer srcDeepIndexHintContainer, HintContainer destDeepIndexHintContainer) {

    fieldPropertyDescriptor = new JavaBeanPropertyDescriptor(clazz, fieldName, isIndexed, index, srcDeepIndexHintContainer,
        destDeepIndexHintContainer);

    isSetFieldPropertyDescriptor = new JavaBeanPropertyDescriptor(clazz, getIsSetFieldName(fieldName), isIndexed, index,
        srcDeepIndexHintContainer, destDeepIndexHintContainer);
  }

  public Class getPropertyType() {
    return fieldPropertyDescriptor.getPropertyType();
  }

  public Object getPropertyValue(Object bean) {
    return isFieldSet(bean) ? fieldPropertyDescriptor.getPropertyValue(bean) : null;
  }

  public void setPropertyValue(Object bean, Object value, FieldMap fieldMap) {
    fieldPropertyDescriptor.setPropertyValue(bean, value, fieldMap);
  }

  private boolean isFieldSet(Object bean) {

    try {
      final Boolean isSetField = (Boolean) isSetFieldPropertyDescriptor.getPropertyValue(bean);
      return isSetField.booleanValue();

    } catch (Throwable e) {
      // The isSetField will not be present for all fields eg. Class.name -
      // that's ok.
      return true;
    }
  }

  private String getIsSetFieldName(final String fieldName) {

    if (fieldName == null) {
      return null;
    }

    // Does the field use dot notation eg. parent.child.field
    int lastDotIndex = fieldName.lastIndexOf(DOT);
    if ((lastDotIndex < 0) || (lastDotIndex == (fieldName.length() - 1))) {
      // No just return the setfield field name
      return IS_SET_PREFIX + fieldName;
    }

    // yes - return the parent.child.setfield field name
    return fieldName.substring(0, lastDotIndex + 1) + IS_SET_PREFIX + fieldName.substring(lastDotIndex + 1);
  }
}