package net.thoughtforge.cache.key;

public class KeyValueBuilder {

  private static final String DEFAULT_ELEMENT_SEPERATOR = "/";
  private final String elementSeperator;
  private final StringBuffer keyValue;

  public KeyValueBuilder() {
    keyValue = new StringBuffer();
    this.elementSeperator = DEFAULT_ELEMENT_SEPERATOR;
  }

  public KeyValueBuilder(final String elementSeperator) {
    keyValue = new StringBuffer();
    this.elementSeperator = elementSeperator;
  }

  public KeyValueBuilder addElement(final Boolean element) {
    if (keyValue.length() > 0) {
      keyValue.append(elementSeperator);
    }
    keyValue.append(Boolean.toString(element));
    return this;
  }

  public KeyValueBuilder addElement(final Enum<?> element) {
    if (keyValue.length() > 0) {
      keyValue.append(elementSeperator);
    }
    keyValue.append(element.name());
    return this;
  }

  public KeyValueBuilder addElement(final Integer element) {
    if (keyValue.length() > 0) {
      keyValue.append(elementSeperator);
    }
    keyValue.append(Integer.toString(element));
    return this;
  }

  public KeyValueBuilder addElement(final String element) {
    if (keyValue.length() > 0) {
      keyValue.append(elementSeperator);
    }
    keyValue.append(element);
    return this;
  }

  public String getKeyValue() {
    return keyValue.toString();
  }
}