SchedParameter.java

package org.libvirt;

import java.util.Arrays;

import org.libvirt.jna.Libvirt;
import org.libvirt.jna.virSchedParameter;
import org.libvirt.jna.virSchedParameterValue;

import com.sun.jna.Native;

/**
 * The abstract parent of the actual Schedparameter classes
 * 
 * @author stoty
 * 
 */
public abstract class SchedParameter {
  public static SchedParameter create(virSchedParameter vParam) {
    SchedParameter returnValue = null;
    if (vParam != null) {
      switch (vParam.type) {
        case (1):
          returnValue = new SchedIntParameter(vParam.value.i);
          break;
        case (2):
          returnValue = new SchedUintParameter(vParam.value.ui);
          break;
        case (3):
          returnValue = new SchedLongParameter(vParam.value.l);
          break;
        case (4):
          returnValue = new SchedUlongParameter(vParam.value.ul);
          break;
        case (5):
          returnValue = new SchedDoubleParameter(vParam.value.d);
          break;
        case (6):
          returnValue = new SchedBooleanParameter(vParam.value.b);
          break;
      }
      if (returnValue != null) {
        returnValue.field = Native.toString(vParam.field);
      } else {
        // FIXME
      }
    }
    return returnValue;
  }

  public static virSchedParameter toNative(SchedParameter param) {
    virSchedParameter returnValue = new virSchedParameter();
    returnValue.value = new virSchedParameterValue();
    returnValue.field = copyOf(param.field.getBytes(), Libvirt.VIR_DOMAIN_SCHED_FIELD_LENGTH);
    returnValue.type = param.getType();
    switch (param.getType()) {
      case (1):
        returnValue.value.i = ((SchedIntParameter) param).value;
        returnValue.value.setType(int.class);
        break;
      case (2):
        returnValue.value.ui = ((SchedUintParameter) param).value;
        returnValue.value.setType(int.class);
        break;
      case (3):
        returnValue.value.l = ((SchedLongParameter) param).value;
        returnValue.value.setType(long.class);
        break;
      case (4):
        returnValue.value.ul = ((SchedUlongParameter) param).value;
        returnValue.value.setType(long.class);
        break;
      case (5):
        returnValue.value.d = ((SchedDoubleParameter) param).value;
        returnValue.value.setType(double.class);
        break;
      case (6):
        returnValue.value.b = (byte) (((SchedBooleanParameter) param).value ? 1 : 0);
        returnValue.value.setType(byte.class);
        break;

    }
    return returnValue;
  }

  public static byte[] copyOf(byte[] original, int length) {
    byte[] returnValue = new byte[length];
    int originalLength = original.length;
    Arrays.fill(returnValue, (byte) 0);
    for (int x = 0; x < originalLength; x++) {
      returnValue[x] = original[x];
    }
    return returnValue;
  }

  /**
   * Parameter name
   */
  public String field;

  /**
   * The type of the parameter
   * 
   * @return the Type of the parameter
   */
  public abstract int getType();

  /**
   * Utility function for displaying the type
   * 
   * @return the Type of the parameter as string
   */
  public abstract String getTypeAsString();

  /**
   * Utility function for displaying the value
   * 
   * @return the value of the parameter in String form
   */
  public abstract String getValueAsString();
}