ResourceProperty.java

/* Copyright (c) 2008 Google Inc.
 *
 * 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 com.google.gdata.data.calendar;

import com.google.gdata.data.AbstractExtension;
import com.google.gdata.data.AttributeGenerator;
import com.google.gdata.data.AttributeHelper;
import com.google.gdata.data.ExtensionDescription;
import com.google.gdata.util.ParseException;

/**
 * GData schema extension describing whether gd:who is a resource, such as a
 * conference room.
 *
 * 
 * 
 */
@ExtensionDescription.Default(
    nsAlias = Namespaces.gCalAlias,
    nsUri = Namespaces.gCal,
    localName = ResourceProperty.EXTENSION_LOCAL_NAME)
public class ResourceProperty extends AbstractExtension {

  static final String EXTENSION_LOCAL_NAME = "resource";
  private static final String ATTRIBUTE_ID = "id";
  private static final String ATTRIBUTE_VALUE = "value";

  public static final ResourceProperty TRUE = new ResourceProperty("true");
  public static final ResourceProperty FALSE = new ResourceProperty("false");

  public static ExtensionDescription getDefaultDescription() {
    return ExtensionDescription.getDefaultDescription(ResourceProperty.class);
  }

  public ResourceProperty() {
    this(null);
  }

  public ResourceProperty(String value) {
    this.value = value;
  }

  // property "id"
  protected String id;
  public String getId() {
    return this.id;
  }
  public void setId(String resId) {
    this.id = resId;
  }

  // property "value"
  protected String value;
  public String getValue() {
    return this.value;
  }
  public void setValue(String value) {
    this.value = value;
  }

  @Override
  protected void putAttributes(AttributeGenerator generator) {
    generator.put(ATTRIBUTE_ID, id);
    generator.put(ATTRIBUTE_VALUE, value);
  }

  @Override
  protected void consumeAttributes(AttributeHelper helper)
      throws ParseException {
    id = helper.consume(ATTRIBUTE_ID, false);
    value = helper.consume(ATTRIBUTE_VALUE, false);
  }

  @Override
  protected void validate() {
    if (id == null && value == null) {
      throw new IllegalStateException("No attributes defined");
    }
  }

  @Override
  public boolean equals(Object o) {
    if (this == o) {
      return true;
    }

    if (!sameClassAs(o)) {
      return false;
    }

    ResourceProperty prop = (ResourceProperty) o;

    return eq(value, prop.value) && eq(id, prop.id);
  }

  @Override
  public int hashCode() {
    int result = getClass().hashCode();
    if (value != null) {
      result = 37 * result + value.hashCode();
    }
    if (id != null) {
      result = 37 * result + id.hashCode();
    }

    return result;
  }
}