BinaryAttribute.java

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/*
 * Project: Server for annotations sharing
 * Author: Ing. Jaroslav Dytrych idytrych@fit.vutbr.cz, Jan Planer xplane01@stud.fit.vutbr.cz
 * File: BinaryAttribute.java
 * Description: Class representing attribute of type Binary
 */

package cz.vutbr.fit.knot.annotations.entity.attribute;

import cz.vutbr.fit.knot.annotations.app.Constants;
import javax.persistence.DiscriminatorValue;
import javax.persistence.Entity;

/**
 * @file BinaryAttribute.java
 *
 * @brief Class representing attribute of type Binary
 */

/**
 * Class representing attribute of type Binary
 *
 * @brief Class representing attribute of type Binary
 */
@Entity
@DiscriminatorValue("Binary")
public class BinaryAttribute extends BaseAttribute {
    
  /**
   * Sets value of the attribute. Value should already be a native java value. 
   * 
   * @param value new value of the attribute
   */
  @Override
  public void setValue(Object value) {
    this.binValue = (byte[]) value;
  }

  /**
   * Gets value of the attribute
   * 
   * @return value of the attribute
   */
  @Override
  public Object getValue() {
    return (Object) this.binValue;
  }

    
  /**
   * Converts string value, which should be encoded in base64 and sets its 
   * binary representation as attribute value
   * 
   * @param value Value of attribute encoded in base64
   */
  @Override
  public void setRawValue(String value) throws IllegalArgumentException {
      if(value == null){
          return;
      }
      try{
          this.binValue = org.apache.commons.codec.binary.Base64.decodeBase64(value);
      }catch(IllegalArgumentException ex){
          throw new IllegalArgumentException("Value " + value + "is not valid binary value");
      }
      
  }

    
  /**
   * Formats attribute value for XML.
   * 
   * @return base64 encoded attribute value
   */
  @Override
  protected String xmlFormatValue() {
    if (this.binValue == null) {
      return "";
    }
    return org.apache.commons.codec.binary.Base64.encodeBase64String(this.binValue);
  }
  
  /**
   * Gets URI address in ontology for this type of attribute
   * 
   * @return Return URI address in ontology for this type of attribute.
   */
  @Override
  public String getTypeOntologyUri(){
      return Constants.BINARY_URI;
  }
    
}  // class BinaryAttribute