DataField.java

/*
 * Class:        DataField
 * Description:  Represents a data field
 * Environment:  Java
 * Software:     SSJ 
 * Copyright (C) 2001  Pierre L'Ecuyer and Universite de Montreal
 * Organization: DIRO, Universite de Montreal
 * @author       David Munger 
 * @since        August 2009
 *
 *
 * 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 umontreal.ssj.util.io;
 
import java.lang.reflect.Array;

public class DataField {
   protected String label;
   protected Object data;
   protected int effectiveLength;

   public DataField(String label, Object data) {
      this(label, data, -1);
   }

   public DataField(String label, Object data, int effectiveLength) {
      this.label = label;
      this.data = data;
      this.effectiveLength = effectiveLength;
   }


   public String getLabel() {
      return label;
   }

   public Class getType() {
      return data.getClass();
   }

   public boolean isAtomic() {
      return !isArray();
   }

   public boolean isArray() {
      return data.getClass().isArray();
   }

   public boolean isArray2D() {
      return isArray() && Array.get(data, 0).getClass().isArray();
   }

   public int getArrayLength() {
      if (!isArray())
         return -1;
      if (effectiveLength < 0)
         return Array.getLength(data);
      return effectiveLength;
   }

   public boolean isString() {
      return (data instanceof String);
   }

   public boolean isInt() {
      return (data instanceof Integer);
   }

   public boolean isFloat() {
      return (data instanceof Float);
   }

   public boolean isDouble() {
      return (data instanceof Double);
   }



   public String asString() {
      return (data instanceof String) ? (String) data : null;
   }

   public int asInt() {
      return (data instanceof Integer) ? ((Integer) data).intValue() : 0;
   }

   public float asFloat() {
      return (data instanceof Float) ? ((Float) data).floatValue() : 0;
   }

   public double asDouble() {
      return (data instanceof Double) ? ((Double) data).doubleValue() : 0;
   }



   public String[] asStringArray() {
      return (data instanceof String[]) ? (String[]) data : null;
   }

   public int[] asIntArray() {
      return (data instanceof int[]) ? (int[]) data : null;
   }

   public float[] asFloatArray() {
      return (data instanceof float[]) ? (float[]) data : null;
   }

   public double[] asDoubleArray() {
      return (data instanceof double[]) ? (double[]) data : null;
   }



   public String[][] asStringArray2D() {
      return (data instanceof String[][]) ? (String[][]) data : null;
   }

   public int[][] asIntArray2D() {
      return (data instanceof int[][]) ? (int[][]) data : null;
   }

   public float[][] asFloatArray2D() {
      return (data instanceof float[][]) ? (float[][]) data : null;
   }

   public double[][] asDoubleArray2D() {
      return (data instanceof double[][]) ? (double[][]) data : null;
   }



   public Object asObject() {
      return data;
   }
 
}