/* 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.activiti.engine.impl.variable;



/**
 * @author Frederik Heremans
 */
public class BooleanType implements VariableType {

  private static final long serialVersionUID = 1L;
  
  public String getTypeName() {
    return "boolean";
  }

  public boolean isCachable() {
    return true;
  }

  public Object getValue(ValueFields valueFields) {
    if(valueFields.getLongValue() != null) {
      return valueFields.getLongValue() == 1;     
    }
    return null;
  }

  public void setValue(Object value, ValueFields valueFields) {
    if (value==null) {
      valueFields.setLongValue(null);
    } else {
      Boolean booleanValue = (Boolean)value;
      if(booleanValue) {
        valueFields.setLongValue(1L);        
      } else {
        valueFields.setLongValue(0L);                
      }
    }
  }

  public boolean isAbleToStore(Object value) {
    if (value==null) {
      return true;
    }
    return Boolean.class.isAssignableFrom(value.getClass())
           || boolean.class.isAssignableFrom(value.getClass());
  }
}