Android Open Source - TipOnDiscount Big Decimal Label Map

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From Project

Back to project page TipOnDiscount.

License

The source code is released under:

GNU General Public License

Java Source Code

package com.itllp.tipOnDiscount.util;
//from w  w  w  .jav a  2  s .c o m
import java.math.BigDecimal;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;

public class BigDecimalLabelMap {

  private List<String> labelList = new ArrayList<String>();
  private Map<BigDecimal, String> map = new HashMap<BigDecimal, String>();
  
  public BigDecimalLabelMap(String[] valueStrings, String[] labels) {
    if (null == labels) {
      throw new RuntimeException("label array cannot be null");
    }
    if (null == valueStrings) {
      throw new RuntimeException("value string array cannot be null");
    }
    if (labels.length != valueStrings.length) {
      throw new RuntimeException
      ("label and value string arrays must be the same length.");
    }
    labelList.addAll(Arrays.asList(labels));
    for (int i=0; i<valueStrings.length; ++i) {
      String valueString = valueStrings[i];
      BigDecimal value = new BigDecimal(valueString);
      map.put(value, labels[i]);
    }
  }

  public String getLabel(BigDecimal value) {
    Set<BigDecimal> valueSet = map.keySet();
    for (BigDecimal aValue: valueSet) {
      if (0 == aValue.compareTo(value)) {
        return map.get(aValue);
      }
    }
    return null;
  }
  
  public Set<BigDecimal> keySet() {
    return map.keySet();
  }

  public Collection<String> values() {
    return map.values();
  }

  public BigDecimal getValue(String label) {
    for (BigDecimal bigDecimal : keySet()) {
      if (getLabel(bigDecimal).equals(label)) {
        return bigDecimal;
      }
    }
    return null;
  }

  /**
   * @return The index of the label or -1 if not found.
   */
  public int getPosition(String label) {
    return labelList.indexOf(label);
  }

}

Java Source Code List

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